Learn the Secret to Successful Records for Fuel Taxes and Vehicle Registration

Corrina Peterson, Transport Editor

May 25, 2023

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Organized and accessible records are the secret to a painless and penalty-free audit under the International Fuel Tax Agreement (IFTA) and International Registration Plan (IRP).

Your hard work will have a double payoff, since:

  • Similar recordkeeping requirements apply under both programs, and
  • Jurisdictions often conduct joint audits of these programs.


Organized: Distance records for both programs

Both IFTA and IRP require detailed records of the actual routes traveled by each vehicle for every trip. When recording mileage for these programs, include ALL movement – interstate and intrastate, as well as loaded, empty, dead-head, and bobtail miles.

A recommended source document to track distance is an individual vehicle mileage record (IVMR). IVMRs must be detailed, accurate, and legible. They can be created:

  • In paper form, or
  • By an electronic logging system/device (ELD) or global positioning system

Distance records must allow an auditor to:

  • Verify the reported distances, and
  • Evaluate the distance tracking system


Organized: Fuel records for IFTA

In addition to distance records, IFTA licensees must also maintain detailed records of all motor fuel purchased, received, or used in the conduct of the business. Retail fuel purchases and bulk fuel purchases must be tracked separately.

The records must enable an auditor to:

  • Verify the distances traveled and fuel purchased for the period under audit, and
  • Evaluate the accuracy of distance and fuel accounting systems for the fleet


Accessible: Format of records

Neither IFTA nor IRP requires a specific type of storage system for the required records. Paper or electronic/digital records are acceptable.

Records can be kept onsite, at an offsite location, or with a third-party administrator. However, once a carrier is notified of an audit by the base jurisdiction, they must be able to present those records within 30 days of the request. If using a third-party administrator, a carrier should be clear about how to access records when necessary.


Accessible: Records retention

Under IFTA, records used for the quarterly tax return must be retained for four years from the return due date or filing date, whichever is later, plus any time included as a result of waivers or jeopardy assessments.

IRP records that support the apportioned registration must be retained for the current year, plus the three preceding mileage years. As a result, distance data may need to be kept for up to six and one-half years. For this reason, it is highly recommended to keep all distance and fuel data for six and one-half years.

Avoid this mistake: If using ELD data to comply with IFTA and IRP, be sure to verify that records are kept for the required retention periods. Since hours-of-service data is only retained for six months, some ELD programs may not meet the longer record retention requirements of IFTA and IRP.


The bottom line:

For a painless and penalty-free audit under IFTA and IRP, keep complete, organized, and detailed records of distance and fuel purchases:

  • In an accessible format, and
  • For the required retention periods.

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