Compliance · Recordkeeping

By File720Online Editorial Team · April 17, 2026

Form 720 Recordkeeping Requirements for Excise Taxes

Proper recordkeeping is the foundation of excise tax compliance. Without supporting records, credits can be disallowed and liabilities assessed without recourse. Here is exactly what records to keep, for how long, and how to organize them.

File Form 720 Our Security & Retention

Quick Answer

Keep Form 720 records for at least 4 years — the retention period the Form 720 instructions require for excise tax records. Required records include transaction records supporting reported quantities, credit documentation showing nontaxable use, and copies of filed returns with IRS acceptance confirmations.

How Long to Keep Form 720 Records

3 Years

IRS Minimum

Standard audit statute of limitations for most returns

6 Years

Extended Lookback

When income is substantially underreported (over 25%)

7 Years

Recommended Practice

File720Online retains your filing records for 7 years

Keep records from the later of: (1) the date the return was filed, or (2) the date the tax was paid. For amended returns, the clock restarts from the amendment filing date.

Fuel Excise Taxes: Records to Keep

✓Terminal rack removal records showing taxable gallons and date
✓Bills of lading or transport documents
✓Sales invoices for each transaction
✓Dyed diesel segregation records (if applicable)
✓Records of nontaxable sales for Schedule C credit support

Indoor Tanning Tax: Records to Keep

✓Daily transaction records showing amount charged per session
✓POS system reports distinguishing UV tanning from spray tanning
✓Records identifying exempt services (medical phototherapy)
✓Membership and package sales records with value breakdown

Air Transportation: Records to Keep

✓Ticket sales records by route showing domestic vs. international
✓Passenger manifests and segment counts
✓Freight waybills and air cargo records
✓Records of exempt military and government flights

Environmental Taxes: Records to Keep

✓Chemical production or import records by type and quantity (tons)
✓Petroleum product import or refinery output records (barrels)
✓Form 6627 supporting calculations
✓EPA and DOT chemical registration records

Manufacturers' Excise Taxes: Records to Keep

✓Sales records for taxable sporting goods (price and quantity)
✓Manufacturer invoices identifying taxable products
✓Export documentation for exempt international sales
✓Records distinguishing taxable from exempt products

Security & Data Retention

How File720Online protects your records

Schedule C Credits

Documentation needed for credit claims

How to Amend Form 720

Correcting errors after filing

Frequently Asked Questions

How long must I keep Form 720 records?

The Form 720 instructions require keeping excise tax records for at least 4 years from the latest of the date the tax became due, the date it was paid, or the date a claim was filed or the date the tax was paid, whichever is later — consistent with the standard audit statute of limitations. However, if you have potential credit claims, or if the IRS has reason to believe income was substantially underreported, the lookback period can extend to 6 years. Keeping records for 7 years provides a conservative safety margin.

What happens if I cannot produce records during an IRS audit?

If you cannot substantiate amounts reported on Form 720, the IRS can disallow credits, assess additional tax, and impose accuracy-related penalties. Without records, you also cannot defend a Schedule C credit claim. The burden of proof rests with the taxpayer for most excise tax positions.

Can I keep records electronically?

Yes. The IRS accepts electronic records, provided they accurately reproduce the original documents and are accessible for IRS examination. Electronic records must be maintained in a format that the IRS can read — common formats like PDF, CSV, and Excel are generally acceptable. File720Online retains your filing records for 7 years and provides downloadable PDF copies.

Do I need to keep original paper records or are copies acceptable?

Copies of original records are generally acceptable, provided they are complete and legible. Electronic images of paper records (scanned PDFs) are acceptable if they meet IRS electronic records standards. There is no general requirement to retain original paper documents if accurate copies are maintained.

What records do I need to support Schedule C excise tax credits?

To support Schedule C credits, you need: (1) proof that excise tax was paid on the goods, (2) evidence of the qualifying nontaxable use (export documentation, government sale invoices, agricultural use records), and (3) exemption certificates from qualifying exempt buyers. Without this documentation, the IRS can disallow the credit.

IRS Authorized E-File Provider

Officially approved to transmit Form 720 directly to the IRS

Bank-Level AES Encryption

Your tax data is encrypted in transit and at rest

Quarterly Tax Experts

Dedicated support for Form 720 filing

Ready to File Form 720?

Complete your quarterly federal excise tax return in minutes with our fast, secure, IRS-authorized e-filing platform.

File Now — Free to Start

Disclaimer: The information provided in this article is for general informational purposes only and should not be relied upon as legal, tax, or professional advice. Tax laws and regulations are subject to change, and their application can vary based on individual circumstances. Consult a qualified tax professional or attorney for advice specific to your situation. File720Online is an IRS-authorized e-file provider and does not provide legal or tax advice.