Maine IFTA Fuel Tax Compliance and Reporting

The International Fuel Tax Agreement (IFTA) is a tax collection mechanism for redistributing fuel tax revenue among the 48 contiguous U.S. states and 10 Canadian provinces. In Maine, the Bureau of Motor Vehicles (BMV) under the Department of the Secretary of State manages IFTA licensing, decal issuance, and quarterly tax return processing. Carriers based in Maine that operate qualified motor vehicles in two or more jurisdictions must register for an IFTA license to simplify their tax reporting obligations. A qualified vehicle is defined as a power unit having two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 pounds, or a power unit having three or more axles regardless of weight, or a combination exceeding 26,000 pounds. Filing IFTA returns accurately requires precise tracking of all miles driven and fuel purchased in every jurisdiction throughout the fiscal year. Maine carriers must submit their reports by the end of the month following the close of each quarter. Failure to maintain detailed records or meet these deadlines results in a minimum penalty of $50.00 or 10% of the net tax due, whichever is greater. DispatchTool helps Maine carriers simplify this process by automatically tracking jurisdiction-specific mileage and centralizing fuel receipts, allowing for the generation of accurate quarterly summary reports. You can create a DispatchTool account to start organizing your trip data for the next IFTA filing cycle.

Maine IFTA Registration and Decal Requirements

To register for IFTA in Maine, a carrier must have an established place of business in the state and mileage must be accrued in Maine. The application for a new license must be submitted to the BMV, and there is currently no fee for the Maine IFTA license itself. However, carriers must purchase a set of two decals for every qualified motor vehicle in their fleet. These decals are valid for one calendar year, from January 1 through December 31. Maine allows a two-month grace period through February to display current year decals, provided the carrier has a valid license. Failure to display a valid decal can result in a fine ranging from $250 to $500 depending on the specific roadside enforcement officer's citation under Maine Revised Statutes Title 29-A.

Quarterly Filing Deadlines and Interest Rates

Maine requires all IFTA licensees to file a quarterly tax return even if no taxable fuel was used or no miles were traveled during the period. The deadlines are strictly enforced: Q1 (Jan-Mar) is due April 30; Q2 (Apr-Jun) is due July 31; Q3 (Jul-Sep) is due October 31; and Q4 (Oct-Dec) is due January 31. If a deadline falls on a weekend or legal holiday, the next business day is the recognized due date. The interest rate for late payments is calculated at 1% per month, with any fraction of a month treated as a full month. This interest applies to the total tax due to all member jurisdictions rather than just the Maine portion, making late filings significantly expensive for high-mileage fleets.

Tax Rates and Maine Special Fuel Levies

Maine's fuel tax rates are set by the legislature and are subject to change. As of the current period, the excise tax on gasoline is $0.30 per gallon, and the tax on special fuel, which includes diesel, is $0.312 per gallon. When filing the IFTA-100 and IFTA-101 forms, Maine carriers must calculate their 'Tax Paid Gallons' by totaling all fuel purchased at the pump where the tax was paid at the time of purchase. The 'Net Tax Due' is the difference between the tax owed to a jurisdiction based on the miles driven there and the tax already paid at the pump. According to Maine BMV guidelines, credits from overpayment in one jurisdiction can be used to offset liabilities in another, resulting in a single payment or refund for the carrier.

Record Keeping and Audit Procedures

Under Maine law and IFTA articles, carriers must retain records for a period of four years from the filing date. These records must include Individual Vehicle Mileage Records (IVMRs), fuel receipts, and summary reports. A valid fuel receipt must show the date of purchase, seller's name and address, number of gallons purchased, fuel type, and the unit number of the vehicle. Maine BMV auditors frequently verify that odometer readings are continuous and that distance is accounted for including deadhead miles and personal use. If records are found to be inadequate during an audit, the BMV may assess tax based on a standard of 4.0 miles per gallon, which often results in a higher tax liability for the carrier.

Maine-Specific Exemptions and Waivers

Maine does not provide broad exemptions for private roads or agricultural use within the IFTA filing process; all miles driven within the state boundaries must be reported. However, Maine does participate in certain weight-related exemptions for specific configurations under Title 29-A, though these rarely impact the underlying IFTA fuel tax obligation. It is important to note that miles driven in jurisdictions that are not IFTA members, such as Alaska, Hawaii, or the District of Columbia, are not reported on the IFTA return. For carriers exclusively operating within Maine, an IFTA license is not required, but they must still pay the standard $0.312 per gallon diesel tax at the point of sale.

Online Filing and the BMV Portal

The Maine Bureau of Motor Vehicles encourages the use of the Maine IFTA Online Service for all filings. To use the online system, carriers must have their Maine-assigned IFTA account number and a federal Employer Identification Number (EIN) or Social Security Number. The online portal allows for the electronic payment of taxes via ACH or credit card. Payments exceeding $10,000 must be made via electronic funds transfer (EFT). The system provides immediate confirmation of filing, which serves as a safeguard against late-filing penalties. Approximately 85% of Maine-based carriers now utilize the electronic portal to manage their quarterly returns and annual renewals.

Sources

Maine Bureau of Motor Vehicles (2024) — https://www.maine.gov/sos/bmv/commercial/ifta.html Maine Revised Statutes Title 29-A (2024) — https://legislature.maine.gov/statutes/29-A/title29-Asec525.html International Fuel Tax Association, Inc. (2025) — https://www.iftach.org

Frequently asked

What is the penalty for filing a late IFTA return in Maine?

Maine imposes a penalty of $50.00 or 10% of the total tax due, whichever is greater. Interest also accrues at a rate of 1% per month on all delinquent amounts until the balance is paid in full.

How many decals does a Maine-based truck need?

Each qualified motor vehicle requires two decals, one to be placed on the lower rear exterior of each side of the cab. These decals are issued annually by the Maine BMV.

Do I need an IFTA license if I only drive in Maine and New Hampshire?

Yes. If you operate a qualified motor vehicle in two or more IFTA jurisdictions, you must either have an IFTA license or purchase trip permits for every jurisdiction you enter outside of your home state.

What is the Maine diesel tax rate for 2024-2025?

The Maine tax rate for special fuel (diesel) is currently $0.312 per gallon. This rate is used to calculate the tax-paid credits on your quarterly IFTA returns.

How long must I keep my fuel receipts in Maine?

You must retain all fuel receipts and mileage records for 4 years from the date the tax return was filed or due to be filed, whichever is later, to remain compliant with Maine BMV audit requirements.