IRS Logo

General Instructions

Purpose of Form

Use Form 720-CS if you are a bulk transport carrier to report monthly receipts and disbursements of all liquid products at a storage location designated by a facility control number (FCN).

A liquid product is any liquid that is transported in or out of storage at a terminal or any other facility. See Table 2. Product Codes on page 5.

Who Must File

Form 720-CS is required to be filed by bulk transport carriers (barges, ships, and pipelines) who receive or deliver reportable liquid products in or out of storage at a terminal, or any other location designated by an FCN.

Pipelines only file receipt or delivery transactions at an approved terminal.

When To File

Form 720-CS must be filed monthly. The report is due the last day of the month following the month in which the transaction occurs.

If any due date for filing a return falls on a Saturday, Sunday, or legal holiday, you may file the return on the next business day.

Send your information return to the IRS using the U.S. Postal Service or a designated private delivery service to meet the “timely mailing as timely filing/paying” rule. See Private Delivery Services on page 2.

Where To File

Mail Form 720-CS to:  
Internal Revenue Service 
Attn: Excise Unit 
Stop 5701G 
Cincinnati, OH 45999 
Send the forms in a flat mailing (not folded). Do not staple, tear, or tape any of these forms. If you are sending a large number of forms in conveniently sized packages, write your name and EIN on each package and number the packages consecutively. Postal regulations require forms and packages to be sent by First-Class Mail.

How To Complete Form 720-CS

Below are suggestions that will allow the IRS to process the submitted forms in the most economical manner:

  1. If you need additional forms or schedules, you may use photocopies.

  2. Although handwritten forms are acceptable, the IRS prefers that you type or machine print data entries using 10 pitch (pica) or 12 pitch (elite) black type. Use block print, not script characters. Insert data in the middle of the blocks not touching other printing and guidelines, and take other measures to guarantee a dark black, clear, sharp image.

  3. Do not enter 0 (zero) or “None” in data entry boxes when no entry is required. Leave the boxes blank unless the instructions specifically require that you enter a 0 (zero).

Substitute Form 720-CS

If you want to prepare and use a substitute Form 720-CS, see Pub. 1167, General Rules and Specifications for Substitute Forms and Schedules. If your substitute Form 720-CS is approved, the form approval number must be printed in the lower left margin of each substitute form you file with the IRS.

Extension of Time To File

First time request for a 30 day extension will be granted, if received in writing on or before the due date of the report. Additional extensions may be considered if received prior to the due date of the return. Send your request to:  
Internal Revenue Service 
Attn: Excise Unit 
Stop 5701G 
Cincinnati, OH 45999 
Requests may also be faxed to (859) 669-5788.

Corrected Returns

If you filed a return with the IRS and later discover you made an error, you must correct it as soon as possible. If you filed your return electronically, see Pub. 3536 for instructions.

When making a correction to a paper filed return, you must send in the first page of Form 720-CS and the schedule(s) that needs to be corrected with the “Void” box checked. Identify the transaction you are correcting, either by highlighting or attaching an explanation. Then, complete another first page of Form 720-CS along with the corrected schedule(s) with the “Corrected” box checked. On the corrected schedule(s), only enter the information for the transaction you are correcting.


Keep copies of information returns you have filed with the IRS or the data to reconstruct them for at least 3 years from the date of the return. Your records must be available at all times for inspection by the IRS.


Failure to file correct information returns by the due date.   If you fail to file a correct information return by the due date and you cannot show reasonable cause, you may be subject to a penalty. The penalty applies if you fail to file timely, you fail to include all information required to be shown on a return, or you include incorrect information on a return. The penalty also applies if you report an incorrect employer identification number (EIN) or fail to report an EIN where required.

Private Delivery Services

You can use certain private delivery services designated by the IRS to meet the “timely mailing as timely filing/paying” rule for tax returns and payments. These private delivery services include only the following:

  • DHL Express (DHL): DHL Same Day Service.

  • Federal Express (FedEx): FedEx Priority Overnight, FedEx Standard Overnight, FedEx 2Day, FedEx International Priority, and FedEx International First.

  • United Parcel Service (UPS): UPS Next Day Air, UPS Next Day Air Saver, UPS 2nd Day Air, UPS 2nd Day Air A.M., UPS Worldwide Express Plus, and UPS Worldwide Express.

The private delivery service can tell you how to get written proof of the mailing date.

Private delivery services cannot deliver items to P.O. boxes. You must use the U.S. Postal Service to mail any item to an IRS P.O. box address.

How To Get Tax Help

You can call the IRS toll free at 1-800-829-4933 for answers to your questions about completing Form 720-CS, excise tax information, or obtaining an employer identification number. You can get excise tax information on the IRS website at

Contacting your Taxpayer Advocate.   The Taxpayer Advocate Service is an independent organization within the IRS whose employees assist taxpayers who are experiencing economic harm, who are seeking help in resolving tax problems that have not been resolved through normal channels, or who believe that an IRS system or procedure is not working as it should.

  You can contact the Taxpayer Advocate Service by calling toll-free 1-877-777-4778 or TTY/TDD 1-800-829-4059 to see if you are eligible for assistance. You can also call or write to your local taxpayer advocate, whose phone number and address are listed in your local telephone directory and in Publication 1546, Taxpayer Advocate Service - Your Voice at the IRS. You can file Form 911, Application for Taxpayer Assistance Order, or ask an IRS employee to complete it on your behalf. For more information, go to

Internet. You can access, 24 hours a day, 7 days a week, to: 

  • Download forms, instructions, and publications;

  • Order IRS products online;

  • Research your tax questions online;

  • Search publications online by topic or keyword;

  • Use the online Internal Revenue Code, Regulations, and other official guidance;

  • View Internal Revenue Bulletins (IRBs) published in the last few years;

  • Sign up to receive local and national tax news by email; and

  • Get information on starting and operating a small business.

Phone. Many services are available by phone.  

  • Ordering forms, instructions, and publications. Call 1-800-TAX-FORM (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.

  • Asking tax questions. Call the IRS with your tax questions at 1-800-829-1040.

  • 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 or look in the phone book under United States Government, Internal Revenue Service.

  • 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.

  • TeleTax topics. Call 1-800-829-4477 to listen to pre-recorded messages covering various tax topics.

  • Refund information. To check the status of your 2010 refund, call 1-800-829-1954 during business hours or 1-800-829-4477 (automated refund information 24 hours a day, 7 days a week). Wait at least 72 hours after the IRS acknowledges receipt of your e-filed return, or 3 to 4 weeks after mailing a paper return. If you filed Form 8379 with your return, wait 14 weeks (11 weeks if you filed electronically). Have your 2010 tax return available so you can provide your social security number, your filing status, and the exact whole dollar amount of your refund. Refunds are sent out weekly on Fridays. If you check the status of your refund and are not given the date it will be issued, please wait until the next week before checking back.

  • Other refund information. To check the status of a prior year refund or amended return refund, call 1-800-829-1954.

Evaluating the quality of our telephone services. To ensure IRS representatives give accurate, courteous, and professional answers, we use several methods to evaluate the quality of our telephone services. One method is for a second IRS representative to listen in on or record random telephone calls. Another is to ask some callers to complete a short survey at the end of the call.

Mail. You can send your order for forms, instructions, and publications to the address below. You should receive a response within 10 days after your request is received.

Internal Revenue Service 
1201 N. Mitsubishi Motorway 
Bloomington, IL 61705-6613

DVD for tax products. You can order Publication 1796, IRS Tax Products DVD, and obtain:  

  • Current year forms, instructions, and publications.

  • Prior year forms, instructions, and publications.

  • Tax Map: an electronic research tool and finding aid.

  • Tax law frequently asked questions.

  • Tax Topics from the IRS telephone response system.

  • Internal Revenue Code—Title 26 of the U.S. Code.

  • Fill-in, print, and save features for most tax forms.

  • Internal Revenue Bulletins.

  • Toll-free and email technical support.

  • Two releases during the year. 
    – The first release will ship the beginning of January 2011. 
    – The final release will ship the beginning of March 2011.

Purchase the DVD from National Technical Information Service (NTIS) at for $30 (no handling fee) or call 1-877-233-6767 toll free to buy the DVD for $30 (plus a $6 handling fee).

More Online Instructions