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7 min read

Record keeping that survives an audit.

What records IFTA actually requires, how long you need to keep them, and how to organize them so an audit takes a day instead of a week.

How long you keep records

All IFTA records must be retained for at least 4 years from the return due date or the filing date, whichever is later.

Worked example: Q1 2024 records (return due April 30, 2024) must be kept until at least April 30, 2028.

Required trip records

For every trip, the file must show:

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Date of trip (start and end).

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Trip origin and destination.

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Route of travel, jurisdiction by jurisdiction.

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Beginning and ending odometer readings.

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Total miles traveled.

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Miles by jurisdiction, the state-by-state breakdown.

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Vehicle unit number or license plate.

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Driver name or ID.

Required fuel records

For every fuel purchase, the receipt must show:

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Date of purchase.

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Seller name and address with city and state or province.

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Number of gallons purchased.

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Fuel type (diesel, gasoline, etc.).

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Price per gallon and total amount.

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Vehicle unit number or license plate.

What good record keeping looks like

01

Go digital from day one

Scan or photograph every receipt the moment you have it. Thermal paper fades; a phone photo does not. Save with a consistent file name.

02

Organize by quarter

One folder per quarter, with sub-folders for trips and fuel. When an auditor asks for a specific quarter, you can hand it over in one click.

03

Use a fleet fuel card

Fleet cards capture purchase location, gallons, and vehicle ID automatically. They eliminate most manual receipt risk.

04

Back it up

Two copies of every digital record, in two places. Cloud plus an external drive is the simplest pattern.

Try it

Run your numbers in the calculator.

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Or read another guide

IFTA Miles

The free fuel-tax calculator for owner-operators and small fleets. Tax rates pulled from IFTACH.org. Estimation only. Always verify with your accountant before filing.

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