Table of Contents
The following terms are used throughout this publication. “Original issue discount” is defined first. The other terms are listed alphabetically.
The OID list on the IRS website can be used by brokers and other middlemen to prepare information returns.

The following discussions explain what information is contained in each section of the list.
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Section I-A: Corporate Debt Instruments Issued Before 1985.
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Section I-B: Corporate Debt Instruments Issued After 1984.
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Section I-C: Inflation-Indexed Debt Instruments.
For each publicly offered debt instrument in Section I, the list contains the following information.
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The name of the issuer.
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The Committee on Uniform Security Identification Procedures (CUSIP) number.
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The issue date.
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The maturity date.
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The issue price expressed as a percent of principal or of stated redemption price at maturity.
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The annual stated or coupon interest rate. (This rate is shown as 0.00 if no annual interest payments are provided.)
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The yield to maturity will be added to Section I-B for bonds issued after December 31, 2006.
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The total OID accrued up to January 1 of a calendar year. (This information is not available for every instrument.)
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For long-term debt instruments issued after July 1, 1982, the daily OID for the accrual periods falling in a calendar year and a subsequent year.
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The total OID per $1,000 of principal or maturity value for a calendar year and a subsequent year.
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Section III-A: Short-Term U.S. Treasury Bills.
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Section III-B: Student Loan Marketing Association.
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Section III-C: Federal Home Loan Banks.
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Section III-D: Federal National Mortgage Association.
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Section III-E: Federal Farm Credit Bank.
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Section III-F: Federal Home Loan Mortgage Corporation.
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Section III-G: Federal Agricultural Mortgage Corporation.

The list of debt instruments discussed earlier does not contain the following items.
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U.S. savings bonds.
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Certificates of deposit and other face-amount certificates issued at a discount, including syndicated certificates of deposit.
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Obligations issued by tax-exempt organizations.
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OID debt instruments that matured or were entirely called by the issuer before the tables were posted on the IRS website.
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Mortgage-backed securities and mortgage participation certificates.
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Long-term OID debt instruments issued before May 28, 1969.
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Short-term obligations, other than the obligations listed in Section III.
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Debt instruments issued at a discount by states or their political subdivisions.
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REMIC regular interests and CDOs.
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Commercial paper and banker's acceptances issued at a discount.
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Obligations issued at a discount by individuals.
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Foreign obligations not traded in the United States and obligations not issued in the United States.
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OID debt instruments for which no information was available or that were issued after mid-October. These will be included in the next revision of the tables on our website at www.irs.gov/formspubs/article/0,,id=109875,00.html.
The following discussions contain specific instructions for brokers and middlemen who hold or redeem a debt instrument for the owner.
In general, you must file a Form 1099 for the debt instrument if the interest or OID to be included in the owner's income for a calendar year totals $10 or more. You also must file a Form 1099 if you were required to deduct and withhold tax, even if the interest or OID is less than $10. See Backup Withholding, later.
If you must file a Form 1099, furnish a copy to the owner of the debt instrument by January 31 in the year it is due. File all your Forms 1099 with the IRS, accompanied by Form 1096, by February 28 in the year it is due (March 31 if you file electronically).
If you redeem a short-term discount obligation for the owner at maturity, you must report the discount as interest on Form 1099-INT.
To figure the discount, use the purchase price shown on the owner's copy of the purchase confirmation receipt or similar record, or the price shown in your transaction records.

If the owner's purchase price cannot be determined, figure the discount as if the owner had purchased the obligation at its original issue price. A special rule is used to determine the original issue price for information reporting on U.S. Treasury bills (T-bills) listed in Section III-A. Under this rule, you treat as the original issue price of the T-bill the noncompetitive (weighted average of accepted auction bids) discount price for the longest-maturity T-bill maturing on the same date as the T-bill being redeemed. This noncompetitive discount price is the issue price (expressed as a percent of principal) shown in Section III-A.
A similar rule is used to figure the discount on short-term discount obligations issued by the organizations listed in Section III-B through Section III-G.
Example 1.
There are 13-week and 26-week T-bills maturing on the same date as the T-bill being redeemed. The price actually paid by the owner cannot be established by owner or middleman records. You treat as the issue price of the T-bill the noncompetitive discount price (expressed as a percent of principal) shown in Section III-A for a 26-week bill maturing on the same date as the T-bill redeemed. The interest you report on Form 1099-INT is the OID (per $1,000 of principal) shown in Section III-A for that obligation.
If you hold a long-term OID debt instrument as a nominee for the true owner, you generally must file Form 1099-OID. For this purpose, you can rely on Section I of the OID list to determine the following information.
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Whether a debt instrument has OID.
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The OID to be reported on the Form 1099-OID.
In general, you must report OID on publicly offered, long-term debt instruments listed in Section I. You also can report OID on other long-term debt instruments.
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Box 1. The OID for the actual dates the owner held the debt instruments during a calendar year. To determine this amount, see Figuring OID, next.
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Box 2. The qualified stated interest paid or credited during the calendar year. Interest reported here is not reported on Form 1099-INT. The qualified stated interest on Treasury inflation-protected securities may be reported on Form 1099-INT in box 3 instead.
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Box 3. Any interest or principal forfeited because of an early withdrawal that the owner can deduct from gross income. Do not reduce the amounts in boxes 1 and 2 by the forfeiture.
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Box 4. Any backup withholding for this debt instrument.
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Box 5. The CUSIP number, if any. If there is no CUSIP number, give a description of the debt instrument, including the abbreviation for the stock exchange, the abbreviation used by the stock exchange for the issuer, the coupon rate, and the year of maturity (for example, NYSE XYZ 12.50 2006). If the issuer of the debt instrument is other than the payer, show the name of the issuer in this box.
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Box 6. The OID on a U.S. Treasury obligation for the part of the year the owner held the debt instrument.
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Section I of the OID list.
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The income tax regulations.
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Look up the daily OID for the first accrual period in the calendar year during which the owner held the debt instrument.
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Multiply the daily OID by the number of days the owner held the debt instrument during that accrual period.
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Repeat steps (1) and (2) for any remaining accrual periods for the year during which the owner held the debt instrument.
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Add the results in steps (2) and (3) to determine the owner's OID per $1,000 of stated redemption price at maturity.
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If necessary, adjust the OID in (4) to reflect the debt instrument's stated redemption price at maturity.
If you hold a bank certificate of deposit (CD) as a nominee, you must determine whether the CD has OID and any OID includible in the income of the owner. You must file an information return showing the reportable interest and OID, if any, on the CD. These rules apply whether or not you sold the CD to the owner. Report OID on a CD in the same way as OID on other debt instruments. See Short-Term Obligations Redeemed at Maturity and Long-Term Debt Instruments, earlier.
If a coupon from a bearer bond is presented to you for collection before the bond matures, you generally must report the interest on Form 1099-INT. However, do not report the interest if either of the following apply.
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You hold the bond as a nominee for the true owner.
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The payee is a foreign person. See Payments to foreign person under Backup Withholding, later.
Because you cannot assume the presenter of the coupon also owns the bond, you should not report OID on the bond on Form 1099-OID. The coupon may have been “stripped” (separated) from the bond and separately purchased.
However, if a long-term bearer bond on the OID list is presented to you for redemption upon call or maturity, you should prepare a Form 1099-OID showing the OID for that calendar year, as well as any coupon interest payments collected at the time of redemption.
If you report OID on Form 1099-OID or interest on Form 1099-INT for a calendar year, you may be required to apply backup withholding to the reportable payment at a rate of 28%. The backup withholding is deducted at the time a cash payment is made. See Pub. 1281, Backup Withholding for Missing and Incorrect Name/TIN(s), for more information.
Backup withholding generally applies in the following situations.
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The payee does not give you a taxpayer identification number (TIN).
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The IRS notifies you that the payee gave an incorrect TIN.
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The IRS notifies you that the payee is subject to backup withholding due to payee underreporting.
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For debt instruments acquired after 1983:
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The payee does not certify, under penalties of perjury, that he or she is not subject to backup withholding under (3), or
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The payee does not certify, under penalties of perjury, that the TIN given is correct.
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However, for short-term discount obligations (other than government obligations), bearer bonds and coupons, and U.S. savings bonds, backup withholding applies only if the payee does not give you a TIN or gives you an obviously incorrect number for a TIN.
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The payee does not give you a TIN.
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The IRS notifies you that the payee gave an incorrect TIN.
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For debt instruments held in an account opened after 1983, the payee does not certify, under penalties of perjury, that the TIN given is correct.
This section is for persons who prepare their own tax returns. It discusses the income tax rules for figuring and reporting OID on long-term debt instruments. It also includes a similar discussion for stripped bonds and coupons, such as zero coupon bonds available through the Department of the Treasury's STRIPS program and government-sponsored enterprises such as the Resolution Funding Corporation. However, the information provided does not cover every situation. More information can be found in the regulations under sections 1271 through 1275 of the Internal Revenue Code.
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U.S. savings bonds.
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Tax-exempt obligations. (However, see Tax-Exempt Bonds and Coupons, later.)
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Obligations issued by individuals before March 2, 1984.
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Loans of $10,000 or less between individuals who are not in the business of lending money. (The dollar limit includes outstanding prior loans by the lender to the borrower.) This exception does not apply if a principal purpose of the loan is to avoid any federal tax.
Example 2.
You bought at issuance a 10-year debt instrument with a stated redemption price at maturity of $1,000, issued at $980 with OID of $20. One-fourth of 1% of $1,000 (the stated redemption price) times 10 (the number of full years from the date of original issue to maturity) equals $25. Under the de minimis rule, you can treat the OID as zero because the $20 discount is less than $25.
See Market Discount Bonds in chapter 1 of Publication 550 for information on how to figure accrued market discount and include it in your income currently and for other information about market discount bonds. If you choose to use the constant yield method to figure accrued market discount, also see Figuring OID on Long-Term Debt Instruments, later. The constant yield method of figuring accrued OID, explained in those discussions under Constant yield method, is also used to figure accrued market discount.
For more information concerning premium or market discount on an inflation-indexed debt instrument, see Regulations section 1.1275-7.
Example 4.
Larry, a calendar year taxpayer, bought a corporate debt instrument at original issue for $86,235.17 on November 1 of Year 1. The 15-year debt instrument matures on October 31 of Year 16 at a stated redemption price of $100,000. The debt instrument provides for semiannual payments of interest at 10%. Assume the debt instrument is a capital asset in Larry's hands. The debt instrument has $13,764.83 of OID ($100,000 stated redemption price at maturity minus $86,235.17 issue price).
Larry sold the debt instrument for $90,000 on November 1 of Year 4. Including the OID he will report for the period he held the debt instrument in Year 4, Larry has included $1,214.48 of OID in income and has increased his basis by that amount to $87,449.65. Larry has realized a gain of $2,550.35. All of Larry's gain is capital gain.
The issuer of the debt instrument (or your broker, if you purchased or held the debt instrument through a broker) should give you a copy of Form 1099-OID or a similar statement if the accrued OID for the calendar year is $10 or more and the term of the debt instrument is more than 1 year. Form 1099-OID shows all OID income in box 1 except OID on a U.S. Treasury obligation, which is shown in box 6. It also shows, in box 2, any qualified stated interest you must include in income. (However, any qualified stated interest on Treasury inflation-protected securities can be reported on Form 1099-INT in box 3.) A copy of Form 1099-OID will be sent to the IRS. Do not attach your copy to your tax return. Keep it for your records.

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You bought the debt instrument at a premium or at an acquisition premium.
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The debt instrument is a stripped bond or coupon (including zero coupon bonds backed by U.S. Treasury securities).
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The debt instrument is a contingent payment or inflation-indexed debt instrument.
Generally, you report your taxable interest and OID income on the interest line of Form 1040EZ, Form 1040A, or Form 1040.
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You received a Form 1099-OID as a nominee for the actual owner.
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Your total interest and OID income for the year was more than $1,500.
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If the OID, as adjusted, is less than the amount shown on Form 1099-OID, show the adjustment as follows.
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Under your last entry on line 1, subtotal all interest and OID income listed on line 1.
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Below the subtotal, write “Nominee Distribution” or “OID Adjustment” and show the OID you are not required to report.
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Subtract that OID from the subtotal and enter the result on line 2.
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If the OID, as adjusted, is more than the amount shown on Form 1099-OID, show the adjustment as follows.
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Under your last entry on line 1, subtotal all interest and OID income listed on line 1.
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Below the subtotal, write “OID Adjustment” and show the additional OID.
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Add that OID to the subtotal and enter the result on line 2.
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How you figure the OID on a long-term debt instrument depends on the date it was issued. It also may depend on the type of the debt instrument. There are different rules for each of the following debt instruments.
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Corporate debt instruments issued after 1954 and before May 28, 1969, and government debt instruments issued after 1954 and before July 2, 1982.
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Corporate debt instruments issued after May 27, 1969, and before July 2, 1982.
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Debt instruments issued after July 1, 1982, and before 1985.
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Debt instruments issued after 1984 (other than debt instruments described in (5) and (6)).
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Contingent payment debt instruments issued after August 12, 1996.
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Inflation-indexed debt instruments (including Treasury inflation-protected securities) issued after January 5, 1997.
If you hold these debt instruments as capital assets, you include OID in income only in the year the debt instrument is sold, exchanged, or redeemed, and only if you have a gain. The OID, which is taxed as ordinary income, generally equals the following amount.
|
number of full months
you held the debt instrument number of full months from date of original issue to date of maturity |
X | original issue discount |
The balance of the gain is capital gain. If there is a loss on the sale of the debt instrument, the entire loss is a capital loss and no OID is reported.
If you hold these debt instruments as capital assets, you must include part of the OID in income each year you own the debt instruments. For information about showing the correct OID on your tax return, see the discussion under How To Report OID, earlier. Your basis in the debt instrument is increased by the OID you include in income.

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Divide the OID shown by 12.
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Multiply the result in (1) by the number of complete and partial months (for example, 6½ months) you held the debt instrument during a calendar year. This is the OID to include in income unless you paid an acquisition premium. The reduction for acquisition premium is discussed next.
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Divide the total OID on the debt instrument by the number of complete months, and any part of a month, from the date of original issue to the maturity date. This is the monthly OID.
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Subtract from your cost the issue price and the accumulated OID from the date of issue to the date of purchase. (If the result is zero or less, stop here. You did not pay an acquisition premium.)
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Divide the amount figured in (2) by the number of complete months, and any part of a month, from the date of your purchase to the maturity date.
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Subtract the amount figured in (3) from the amount figured in (1). This is the OID to include in income for each month you hold the debt instrument during the year.
If you hold these debt instruments as capital assets, you must include part of the OID in income each year you own the debt instruments and increase your basis by the amount included. For information about showing the correct OID on your tax return, see How To Report OID, earlier.

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Divide the total OID for a calendar year by 365 (366 for leap years).
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Multiply the result in (1) by the number of days you held the debt instrument during that particular year.
This computation is an approximation and may result in a slightly higher OID than Method 2.
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Look up the daily OID for the first accrual period you held the debt instrument during a calendar year. (See Accrual period under Constant yield method, next.)
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Multiply the daily OID by the number of days you held the debt instrument during that accrual period.
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If you held the debt instrument for part of both accrual periods, repeat (1) and (2) for the second accrual period.
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Add the results of (2) and (3). This is the OID to include in income, unless you paid an acquisition premium. (The reduction for acquisition premium is discussed later.)
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Multiply the adjusted issue price at the beginning of the accrual period by the debt instrument's yield to maturity.
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Subtract from the result in (1) any qualified stated interest allocable to the accrual period.
| (ip × ytm) - qsi | ||
| p |
| ip | = | issue price |
| ytm | = | yield to maturity |
| qsi | = | qualified stated interest |
| p | = | number of days in accrual period |
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The numerator is the acquisition premium.
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The denominator is the total OID remaining for the debt instrument after your purchase date.

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The amount from the “Total OID to January 1, YYYY” column for your debt instrument.
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The OID from January 1 of a calendar year to the date of purchase, figured as follows.
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Multiply the daily OID for the first accrual period in the calendar year by the number of days from January 1 to the date of purchase, or the end of the accrual period if the debt instrument was purchased in the second or third accrual period.
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Multiply the daily OID for each subsequent accrual period by the number of days in the period to the date of purchase or the end of the accrual period, whichever applies.
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Add the amounts figured in (2a) and (2b).
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If you hold debt instruments issued after 1984, you must report part of the OID in gross income each year that you own the debt instruments. You must include the OID in gross income whether or not you hold the debt instrument as a capital asset. Your basis in the debt instrument is increased by the OID you include in income. For information about showing the correct OID on your tax return, see How To Report OID, earlier.

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Look up the daily OID for the first accrual period in which you held the debt instrument during a calendar year. (See Accrual period under Constant yield method, later.)
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Multiply the daily OID by the number of days you held the debt instrument during that accrual period.
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Repeat (1) and (2) for any remaining accrual periods in which you held the debt instrument.
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Add the results of (2) and (3). This is the OID to include in income for that year, unless you paid an acquisition premium. (The reduction for acquisition premium is discussed later.)
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Multiply the adjusted issue price at the beginning of the accrual period by a fraction. The numerator of the fraction is the debt instrument's yield to maturity and the denominator is the number of accrual periods per year. The yield must be stated appropriately taking into account the length of the particular accrual period.
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Subtract from the result in (1) any qualified stated interest allocable to the accrual period.
| (ip × ytm/n) - qsi | ||
| p |
| ip | = | issue price |
| ytm | = | yield to maturity |
| n | = | number of accrual periods in 1 year |
| qsi | = | qualified stated interest |
| p | = | number of days in accrual period |
The daily OID for subsequent accrual periods is figured the same way except the adjusted issue price at the beginning of each period is used in the formula instead of the issue price.
Example 5.
On January 1 of Year 1, you bought a 15-year, 10% debt instrument of A Corporation at original issue for $86,235.17. According to the prospectus, the debt instrument matures on December 31 of Year 15 at a stated redemption price of $100,000. The yield to maturity is 12%, compounded semiannually. The debt instrument provides for qualified stated interest payments of $5,000 on June 30 and December 31 of each calendar year. The accrual periods are the 6-month periods ending on each of these dates. The number of days for the first accrual period (January 1 through June 30) is 181 days (182 for leap years). The daily OID for the first accrual period is figured as follows.
| ($86,235.17 x .12/2) - $5,000 | ||
| 181 days |
| = | $174.11020 | = | $.96193 | |
| 181 | ||||
The adjusted issue price at the beginning of the second accrual period is the issue price plus the OID previously includible in income ($86,235.17 + $174.11), or $86,409.28. The number of days for the second accrual period (July 1 through December 31) is 184 days. The daily OID for the second accrual period is figured as follows.
| ($86,409.28 x .12/2) - $5,000 | ||
| 184 days |
| = | $184.55681 | = | $1.00303 | |
| 184 |
Since the first and second accrual periods coincide exactly with your tax year, you include in income for Year 1 the OID allocable to the first two accrual periods, $174.11 ($.95665 × 182 days) plus $184.56 ($1.00303 × 184 days), or $358.67. Add the OID to the $10,000 interest you report on your income tax return for Year 1.
Example 6.
Assume the same facts as in Example 5, except that you bought the debt instrument at original issue on May 1 of Year 1, with a maturity date of April 30, Year 16. Also, the interest payment dates are October 31 and April 30 of each calendar year. The accrual periods are the 6-month periods ending on each of these dates.
The number of days for the first accrual period (May 1 through October 31) is 184 days. The daily OID for the first accrual period is figured as follows.
| ($86,235.17 x .12/2) - $5,000 | ||
| 184 days |
| = | $174.11020 | = | $.94625 | |
| 184 | ||||
The number of days for the second accrual period (November 1 through April 30) is 181 days (182 for leap years). The daily OID for the second accrual period is figured as follows.
| ($86,409.28 x .12/2) - $5,000 | ||
| 181 days |
| = | $184.55681 | = | $1.01965 | |
| 181 |
If you hold the debt instrument through the end of Year 1, you must include $236.31 of OID in income. This is $174.11 ($.94625 × 184 days) for the period May 1 through October 31 plus $62.20 ($1.01965 × 61 days) for the period November 1 through December 31. The OID is added to the $5,000 interest income paid on October 31 of Year 1. Your basis in the debt instrument is increased by the OID you include in income. On January 1 of Year 2, your basis in the A Corporation debt instrument is $86,471.48 ($86,235.17 + $236.31).
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The numerator is the acquisition premium.
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The denominator is the total OID remaining for the debt instrument after your purchase date.
Example 7.
Assume the same facts as in Example 6, except that you bought the debt instrument on November 1 of Year 1 for $87,000, after its original issue on May 1 of Year 1. The adjusted issue price on November 1 of Year 1 is $86,409.28 ($86,235.17 + $174.11). In this case, you paid an acquisition premium of $590.72 ($87,000 - $86,409.28). The daily OID for the accrual period November 1 through April 30, reduced for the acquisition premium, is figured as follows.
| 1) | Daily OID on date of purchase (2nd accrual period) | $1.01965* | |
2) |
Acquisition premium |
$590.72 | |
3) |
Total OID remaining after purchase date ($13,764.83 - $174.11) |
13,590.72 | |
| 4) | Line 2 ÷ line 3 | .04346 | |
5) |
Line 1 × line 4 |
.04432 | |
6) |
Daily OID reduced for the acquisition premium. Line 1 - line 5 |
$0.97533 | |
* As shown in Example 6. |
|||
The total OID to include in income for Year 1 is $59.50 ($.97533 × 61 days).
This discussion shows how to figure OID on a contingent payment debt instrument issued after August 12, 1996, that was issued for cash or publicly traded property. In general, a contingent payment debt instrument provides for one or more payments that are contingent as to timing or amount. If you hold a contingent payment bond, you must report OID as it accrues each year.
Because the actual payments on a contingent payment debt instrument cannot be known in advance, issuers and holders cannot use the constant yield method (discussed earlier under Debt Instruments Issued After 1984) without making certain assumptions about the payments on the debt instrument. To figure OID accruals on contingent payment debt instruments, holders and issuers must use the noncontingent bond method.
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Figure the OID using the constant yield method (discussed earlier under Debt Instruments Issued After 1984 ) that applies to fixed payment debt instruments. Use the comparable yield as the yield to maturity. In general, use the projected payment schedule to determine the instrument's adjusted issue price at the beginning of each accrual period (other than the initial period). Do not treat any amount payable as qualified stated interest.
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Adjust the OID in (1) to account for actual contingent payments. If the contingent payment is greater than the projected fixed amount, you have a positive adjustment. If the contingent payment is less than the projected fixed amount, you have a negative adjustment.
See Regulations section 1.1275-4 for exceptions to these rules.
This discussion shows how you figure OID on certain inflation-indexed debt instruments issued after January 5, 1997. An inflation-indexed debt instrument is generally a debt instrument on which the payments are adjusted for inflation and deflation (such as Treasury inflation-protected securities (TIPS)).
In general, if you hold an inflation-indexed debt instrument, you must report as OID any increase in the inflation-adjusted principal amount of the debt instrument that occurs while you held the debt instrument during the tax year. You must include the OID in gross income whether or not you hold the debt instrument as a capital asset. Your basis in the debt instrument is increased by the OID you include in income.

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The coupon bond method, described in the following discussion, applies if the debt instrument is issued at par, all stated interest payable on the debt instrument is qualified stated interest, and the coupons have not been stripped from the debt instrument. This method generally applies, for example, to TIPS.
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The discount bond method applies to any inflation-indexed debt instrument that does not qualify for the coupon bond method, such as a stripped debt instrument. This method is described in Regulations section 1.1275-7(e).
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Add the inflation-adjusted principal amount for the day after the last day of the tax year and any principal payments you received during the year. (For TIPS, multiply the par value by the index ratio for the day after the last day of the tax year, and add any principal payments received.)
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Subtract from (1) above the inflation-adjusted principal amount for the first day on which you held the debt instrument during the tax year. (For TIPS, subtract from (1) above the product of the par value times the index ratio for the first day held during the tax year.)
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Add the inflation-adjusted principal amount for the last day on which you held the debt instrument during the tax year and any principal payments you received during the year. (For TIPS, multiply the par value by the index ratio for the sale or retirement date, and add any principal payments received.)
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Subtract from (1) above the inflation-adjusted principal amount for the first day on which you held the debt instrument during the tax year. (For TIPS, subtract from (1) above the product of the par value times the index ratio for the first day held during the tax year.)
Example 8.
On February 6 of Year 9, you bought an old 10-year, 3.375% inflation-indexed debt instrument (maturing January 15 of Year 11) for $9,831. The stated principal (par value) amount is $10,000 and the inflation-adjusted principal amount for February 6 of Year 9 is $12,047.50 ($10,000 par value times 1.20475 index ratio). You held the debt instrument until August 29 of Year 9 when the inflation-adjusted principal amount was $12,275.70 ($10,000 par value times 1.22757 index ratio). Your OID for Year 9 is $228.20 ($12,275.70 - $12,047.50). Your basis in the debt instrument on August 29 of Year 9 was $10,059.20 ($9,831 cost + $228.20 OID) for Year 9.
You decrease your basis in the debt instrument by the deflation adjustment used to offset interest income.
Example 9.
Assume the same facts as in Example 8, except that you bought the debt instrument for $9,831 on January 6 of Year 9, when the inflation-adjusted principal amount was $12,050.10, and sold the debt instrument on March 1 of Year 9, when the inflation-adjusted principal amount was $12,011.20. Because the OID calculation for Year 9 ($12,011.20 - $12,050.10) produces a negative number (negative $38.90), you have a deflation adjustment. You use this deflation adjustment to offset the stated interest reported to you on the debt instrument.
Your basis in the debt instrument on March 1 of Year 9 is $9,792.10 ($9,831 cost - $38.90 deflation adjustment) for Year 9.
If you strip one or more coupons from a bond and then sell or otherwise dispose of the bond or the stripped coupons, they are treated as separate debt instruments issued with OID. The holder of a stripped bond has the right to receive the principal (redemption price) payment. The holder of a stripped coupon has the right to receive an interest payment on the bond. The rule requiring the holder of a debt instrument issued with OID to include the OID in gross income as it accrues applies to stripped bonds and coupons acquired after July 1, 1982. See Debt Instruments and Coupons Purchased After July 1, 1982, and Before 1985 or Debt Instruments and Coupons Purchased After 1984, later, for information about figuring the OID to report.
Stripped bonds and coupons include the following instruments.
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Zero coupon bonds available through the Department of the Treasury's STRIPS program and government-sponsored enterprises such as the Resolution Funding Corporation and the Financing Corporation.
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Debt instruments backed by U.S. Treasury securities that represent ownership interests in those securities. Examples include obligations backed by U.S. Treasury bonds that are offered primarily by brokerage firms (variously called CATS, TIGRs, etc.).
The amount shown in box 6 of the Form 1099-OID you receive for a stripped bond or coupon may not be the proper amount to include in income. If not, you must figure the OID to report on your return under the rules that follow. For information about showing an OID adjustment on your tax return, see How To Report OID, earlier.
The OID on a stripped tax-exempt bond, or on a stripped coupon from such a bond, is generally not taxable. However, if you acquired the stripped bond or coupon after October 22, 1986, you must accrue OID on it to determine its basis when you dispose of it. How you figure accrued OID and whether any OID is taxable depend on the date you bought (or are treated as having bought) the stripped bond or coupon.
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The coupon rate on the bond before the separation of coupons. (However, if you can establish the YTM of the bond (with all coupons attached) at the time of its original issue, you can use that YTM instead.)
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The YTM of the stripped bond or coupon.
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The coupon rate on the bond from which the coupons were separated. (However, you can use the original YTM instead.)
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The YTM based on the purchase price of the stripped coupon or bond.
Example 10.
Assume that a tax-exempt bond with a face amount of $100 due January 1 of Year 4 and a coupon rate of 10% (compounded semiannually) was issued for $100 on January 1 of Year 1. On January 1 of Year 2 the bond was stripped and you bought the right to receive the principal amount for $79.21. The stripped bond is treated as if it was originally issued on January 1 of Year 2 with OID of $20.79 ($100.00 - $79.21). This reflects a YTM at the time of the strip of 12% (compounded semiannually). The tax-exempt part of OID on the stripped bond is limited to $17.73. This is the difference between the redemption price ($100) and the issue price that would produce a YTM of 10% ($82.27). This part of the OID is treated as OID on a tax-exempt obligation.
The OID on the stripped bond that is more than the tax-exempt part is $3.06. This is the excess of the total OID ($20.79) over the tax-exempt part ($17.73). This part of the OID ($3.06) is treated as OID on an obligation that is not tax exempt.
The total OID allocable to the accrual period ending June 30 of Year 2 is $4.75 (6% × $79.21). Of this, $4.11 (5% × $82.27) is treated as OID on a tax-exempt obligation and $0.64 ($4.75 - $4.11) is treated as OID on an obligation that is not tax exempt. Your basis in the debt instrument as of June 30 of Year 2 is increased to $83.96 ($79.21 issue price + accrued OID of $4.75).
If you purchased a stripped bond or coupon after July 1, 1982, and before 1985, and you held that debt instrument as a capital asset during any part of a calendar year, you must figure the OID to be included in income using a constant yield method. Under this method, OID is allocated over the time you hold the debt instrument by adjusting the acquisition price for each accrual period. The OID for the accrual period is figured by multiplying the adjusted acquisition price at the beginning of the period by the yield to maturity.

Calculation. Summary: This is the calculation used for figuring the yield to maturity of bonds and coupons purchased after 7/1/82 and before 1985. This calculation can only be used if the period from purchase to maturity can be divided exactly into full accrual periods. To calculate: (s.r.p. divided by a.p.) raised to the (1 divided by m) power minus 1: where: s.r.p. is the stated redemption price at maturity; a.p. is the acquisition price; m is number of full accrual periods from purchase to maturity.
| srp | = | stated redemption price at maturity |
| ap | = | acquisition price |
| m | = | number of full accrual periods from purchase to maturity |
| (ap × ytm) | ||
| p |
| ap | = | acquisition price |
| ytm | = | yield to maturity |
| p | = | number of days in accrual period |
If you purchased a stripped bond or coupon (other than a stripped inflation-indexed debt instrument) after 1984, and you held that debt instrument during any part of a calendar year, you must figure the OID to be included in income using a constant yield method. Under this method, OID is allocated over the time you hold the debt instrument by adjusting the acquisition price for each accrual period. The OID for the accrual period is figured by multiplying the adjusted acquisition price at the beginning of the period by a fraction. The numerator of the fraction is the debt instrument's yield to maturity and the denominator is the number of accrual periods per year.
If the stripped bond or coupon is an inflation-indexed instrument, you must figure the OID to be included in income using the discount bond method described in Regulations section 1.1275-7(e).

Calculation. Summary: This is the calculation used for figuring the yield to maturity of bonds and coupons purchased after 1984. This calculation can only be used if the period from purchase to maturity can be divided exactly into full accrual periods. To calculate: n multiplied by ((s.r.p. divided by a.p.) raised to the (1 divided by m) power minus 1): where: n is the number of accrual periods in one year, s.r.p. is the stated redemption price at maturity; a.p. is the acquisition price; and m is number of full accrual periods from purchase to maturity.
| n | = | number of accrual periods in 1 year |
| srp | = | stated redemption price at maturity |
| ap | = | acquisition price |
| m | = | number of full accrual periods from purchase to maturity |
Example 11.
On May 15 of Year 1, you bought a coupon stripped from a U.S. Treasury bond through the Department of the Treasury's STRIPS program for $38,000. An amount of $100,000 is payable on the coupon's due date, November 14 of Year 13. There are exactly 25 6-month periods between the purchase date, May 15 of Year 1, and the coupon's due date, November 14 of Year 13. The YTM on this stripped coupon is figured as follows.

Calculation. Summary: This is the calculation used for figuring the yield to maturity of bonds and coupons purchased after 1984 as described in example 11. To calculate: 2 multiplied by (($100,000 divided by $38,000) raised to (1 divided by 25) power minus 1) equals 2 multiplied by (1.03946 minus 1) equals 0.07892 equals 7.892%.
Use 7.892% YTM to figure the OID for each accrual period or partial accrual period for which you must report OID.

Calculation. Summary: This is the calculation used for figuring the yield to maturity of bonds and coupons purchased after 1984. This calculation can only be used if the period from purchase to maturity has a short initial accrual period. To calculate: n multiplied by ((s.r.p. divided by a.p.) raised to the (1 divided by ((r divided by s) plus m) power minus 1): where: n is the number of accrual periods in one year, s.r.p. is the stated redemption price at maturity; a.p. is the acquisition price; r is number of days from purchase to the end of short accrual period; s is number of days in accrual period ending on last day of short accrual period; and m is number of full accrual periods from purchase to maturity.
| n | = | number of accrual periods in 1 year |
| srp | = | stated redemption price at maturity |
| ap | = | acquisition price |
| r | = | number of days from purchase to end of short accrual period |
| s | = | number of days in accrual period ending on last day of short accrual period |
| m | = | number of full accrual periods from purchase to maturity |
Example 12.
On May 30 of Year 1, you bought a coupon stripped from a U.S. Treasury bond through the Department of the Treasury's STRIPS program for $60,000. $100,000 is payable on the coupon's due date, August 11 of Year 7. You decide to figure OID using 6-month accrual periods. There are 12 full 6-month accrual periods and a 74-day short initial accrual period from the purchase date to the coupon's due date. The YTM on this stripped coupon is figured as follows.

Calculation. Summary: This is the calculation used for figuring the yield to maturity of bonds and coupons purchased after 1984 as described in example 12. To calculate: 2 multiplied by (($100,000 divided by $60,000) raised to (1 divided by ((74 divided by 181) plus 12)) power minus 1 equals 2 multiplied by (1.04203 minus 1) equals .08406 equals 8.406%.
Use 8.406% YTM to figure the OID for each accrual period or partial accrual period for which you must report OID.
| r s |
| ap x (1 + ytm /n) - ap | ||
| r |
| ap | = | acquisition price |
| ytm | = | yield to maturity |
| n | = | number of accrual periods in 1 year |
| p | = | number of days in accrual period |
| r | = | number of days from purchase to end of short accrual period |
| s | = | number of days in accrual period ending on last day of short accrual period |
Example 13.
Assume the same facts as in Example 12, and that you held the coupon for the rest of Year 1.
For the short initial accrual period from May 30 through August 11, the daily OID is figured using Formula 2, as follows.
| 74 181 |
| $60,000 × (1 + .08406/2) - $60,000 | ||||
| 74 | ||||
| = | $1,018.48 | = $13.76327 | ||
| 74 | ||||
The OID for this period is $1,018.48 ($13.76327 × 74 days).
For the second accrual period from August 12 of Year 1 through February 11 of Year 2, the adjusted acquisition price is $61,018.48. This is the original $60,000 acquisition price plus $1,018.48 OID for the short initial accrual period. The daily OID is figured using Formula 1, as follows.
| $61,018.48 × (.08406/2) 184 |
|||
| = | $2,564.60671 | = $13.93808 | |
| 184 | |||
The OID for the part of this period included in Year 1 (August 12 - December 31) is $1,979.21 ($13.93808 × 142 days).
The OID to be reported on your income tax return for Year 1 is $2,997.69 ($1,018.48 + $1,979.21).
You can get help with unresolved tax issues, order free publications and forms, ask tax questions, and get information from the IRS in several ways. By selecting the method that is best for you, you will have quick and easy access to tax help.

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E-file your return. Find out about commercial tax preparation and e-file services available free to eligible taxpayers.
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Check the status of your refund. Click on Where's My Refund. Wait at least 6 weeks from the date you filed your return (3 weeks if you filed electronically). Have your tax return available because you will need to know your social security number, your filing status, and the exact whole dollar amount of your refund.
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Download forms, instructions, and publications.
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Order IRS products online.
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Research your tax questions online.
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Search publications online by topic or keyword.
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Figure your withholding allowances using our withholding calculator.
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Sign up to receive local and national tax news by email.
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Get information on starting and operating a small business.

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Ordering forms, instructions, and publications. Call 1-800-829-3676 to order current-year forms, instructions, and publications, and prior-year forms and instructions. You should receive your order within 10 days.
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Solving problems. You can get face-to-face help solving tax problems every business day in IRS Taxpayer Assistance Centers. An employee can explain IRS letters, request adjustments to your account, or help you set up a payment plan. Call your local Taxpayer Assistance Center for an appointment. To find the number, go to www.irs.gov/localcontacts or look in the phone book under United States Government, Internal Revenue Service.
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TTY/TDD equipment. If you have access to TTY/TDD equipment, call 1-800-829-4059 to ask tax questions or to order forms and publications.
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TeleTax topics. Call 1-800-829-4477 to listen to pre-recorded messages covering various tax topics.
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Refund information. To check the status of your refund, call 1-800-829-4477 and press 1 for automated refund information or call 1-800-829-1954. Be sure to wait at least 6 weeks from the date you filed your return (3 weeks if you filed electronically). Have your tax return available because you will need to know your social security number, your filing status, and the exact whole dollar amount of your refund.
Evaluating the quality of our telephone services. To ensure IRS representatives give accurate, courteous, and professional answers, we
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Products. You can walk in to many post offices, libraries, and IRS offices to pick up certain forms, instructions, and publications. Some IRS offices, libraries, grocery stores, copy centers, city and county government offices, credit unions, and office supply stores have a collection of products available to print from a CD-ROM or photocopy from reproducible proofs. Also, some IRS offices and libraries have the Internal Revenue Code, regulations, Internal Revenue Bulletins, and Cumulative Bulletins available for research purposes.
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Services. You can walk in to your local Taxpayer Assistance Center every business day for personal, face-to-face tax help. An employee can explain IRS letters, request adjustments to your tax account, or help you set up a payment plan. If you need to resolve a tax problem, have questions about how the tax law applies to your individual tax return, or you're more comfortable talking with someone in person, visit your local Taxpayer Assistance Center where you can spread out your records and talk with an IRS representative face-to-face. No appointment is necessary, but if you prefer, you can call your local Center and leave a message requesting an appointment to resolve a tax account issue. A representative will call you back within 2 business days to schedule an in-person appointment at your convenience. To find the number, go to www.irs.gov/localcontacts or look in the phone book under United States Government, Internal Revenue Service.

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