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Understanding Your CP3219B Notice

This Statutory Notice of Deficiency notifies you of the IRS’s intent to assess a tax deficiency and informs you of your right to petition the United States Tax Court to dispute the proposed adjustments.


What you need to do immediately

  • Review this notice and compare our changes to the information on your tax return. On previous notices we asked you to verify the income, credits, and deductions reported on your tax return because they’re different from the information we received from other sources. You didn't provide any further information to us.
  • If you agree with the changes, complete the Form 4089, Notice of Deficiency - Waiver, sign and return it in order to limit additional interest charges.
  • If you don't send a payment with Form 4089, we will send a bill for the amount due with any interest and applicable penalties.
  • Mail any additional information you have to us immediately. Attach this letter to your correspondence to help us identify your case. Keep a copy for your records. Our consideration won't extend the deadline to file a petition with the U.S Tax Court.
  • If you don’t agree with the changes you have the right to challenge the increase in tax by filing a petition with the U.S. Tax Court. You have 90 days (150 if the notice was addressed outside the United States) to file the petition. The Court can’t consider your case if the petition is filed late. You can download a petition form and rules from www.ustaxcourt.gov or contact:

  • Clerk of the U.S. Tax Court
    400 Second Street, NW
    Washington, DC 20217
    1-202-521-0700

You may want to

  • Send us the name, address and taxpayer identification number of the other party that received the income if it isn't yours.
  • Notify the payers to correct their records to show the name and taxpayer identification number of the person or business who actually received the income, so that future reports to us are accurate.

Answers to Common Questions

Is this a Bill?
No. It tells you of the IRS’s intention to assess a tax deficiency. It isn't an assessment of tax nor does it require you to make immediate payment. We haven’t charged any additional tax at this time.

Should I call with my response or mail it in?
If you want us to consider additional information, please contact us immediately. Our consideration won't extend the deadline to file a petition with the U.S Tax Court.


If you have a simple response, such as directing us to a specific line on your original return where you reported the income, you can call a Customer Service Representative and provide the information. A toll-free number is listed in the top right hand corner of the notice.


A written response may be required if the issue is more involved, especially if you disagree with some of the proposed changes. You may want to mail copies of payer information documents such as Form(s) 1099 or Schedule(s) K-1. Include any other letters or documents that support your position. You should submit a written statement to fully explain any unusual tax situations.


If you choose to petition the United States Tax Court, the application must be submitted in writing.

Why did it take you so long to contact us about this?
Tax years generally end on Dec. 31, but we don't receive information from banks, businesses, and other payers until much later. Once we receive all the tax returns and payer information, we compare the information you reported with the information third party payers provided to us. It can take 8 months or more to complete this review.

I need more time to find my records and go through them all. Will you allow me additional time to respond?
No. The time you have to petition the United States Tax Court can't be extended. It’s important that you respond to the Statutory Notice of Deficiency or petition the United States Tax Court (if you choose to) by the due date shown on the notice. If you don’t, we’ll assume the proposed changes are correct and assess the additional deficiency.

Do I have to pay the interest? Can you remove it?
The law requires us to charge interest on any tax that isn't paid by the return due date (Internal Revenue Code Section 6601). 

The law doesn't permit us to reduce or remove interest for reasonable cause. However, in limited circumstances, we may waive penalties. If you believe you qualify for penalty removal, you should include related information in your response.

What should I do to avoid problems like this in the future?
Keep accurate payment information from banks and other payers to verify you've received all payment information for filing your return. Review the documents to be sure they show your most current address. Take the following actions when filing your tax return to avoid similar issues in the future:

  • Report specific income type on the correct line on the Form 1120, U.S. Corporation Income Tax Return. For example, rental income should be claimed on Form 1120, line 6 (Gross Rents). For additional information, please see the reporting instructions for Form 1120.
  • If you report income on a line not traditionally reserved for that type of income, provide a statement indicating where the income was reported. For example, your business is related to investment activity and you're reporting all interest income (including amounts reported to the IRS on Form 1099-INT, Interest Income) with your gross receipts on Form 1120, line 1.
  • Always attach a statement identifying the source of the amount reported on Form 1120, line 10 (Other Income).
  • Provide an attached statement explaining your percentage of gross proceeds (ex; reported to us on Form 1099-MISC) that you would be liable to claim on your tax return.
  • Generally, if you receive a Form 1099 for amounts that actually belong to another person, you are considered a nominee recipient. You must file a Form 1099 with the IRS (the same type of Form 1099 you received) for each of the other owners showing the amounts applicable to each.
Page Last Reviewed or Updated: 18-Dec-2014

How to get help

  • Call the 1-800 number listed on the top right corner of your notice.
  • Authorize someone (e.g., accountant) to contact the IRS on your behalf using Form 2848.
  • See if you qualify for help from a Low Income Taxpayer Clinic.