Quarterly Fuel Taxes - As a holder of an IFTA permit, you agree to file a tax return every quarter. Accurate reporting of your mileage and fuel purchases is critical to maintaining compliance and avoiding a costly audit. Our services will help you ensure accurate and timely filing of this information. We offer you the option to fax or mail us your trip sheets as a monthly service or you can provide us with a summary of your information at the end of the quarter for a more inexpensive approach to compliance.