Delaware IFTA Fuel Tax Compliance and Filing Guide

The International Fuel Tax Agreement (IFTA) is a reciprocal agreement between the lower 48 U.S. states and Canadian provinces that simplifies the reporting of fuel use by motor carriers. In Delaware, the Division of Motor Vehicles (DMV) oversees the administration, licensing, and auditing of IFTA accounts. Any motor carrier based in Delaware that operates qualified motor vehicles in at least one other IFTA jurisdiction must register for a license. A qualified motor vehicle is defined as a vehicle used for transporting persons or property that has two axles and a gross vehicle weight exceeding 26,000 pounds, has three or more axles regardless of weight, or is used in combination where the total weight exceeds 26,000 pounds. Filing accurate reports requires precise tracking of total distance traveled and total fuel consumed across all jurisdictions. Carriers must maintain detailed records, including GPS data, fuel receipts, and trip logs, for at least four years from the filing date. Failure to comply with Delaware's specific filing deadlines or record-keeping standards can result in penalties, interest charges, and the potential suspension of operating credentials. DispatchTool simplifies this process by automatically aggregating mileage by state and organizing fuel expenses, allowing carriers to generate IFTA-ready summaries that match the Delaware DMV's reporting requirements. You can create a DispatchTool account to start automating your quarterly fuel tax distance logs and expense tracking.

Registration and Licensing Fees

To register for IFTA in Delaware, a carrier must have an established place of business in the state and perform the majority of their fleet management within Delaware. The Delaware DMV does not charge a fee for the IFTA license itself; however, there is a fee of $5.00 for each set of two decals. Each qualified motor vehicle must display one decal on each side of the exterior. Licenses and decals are valid for one calendar year, expiring on December 31. Carriers are granted a grace period through February to display new year decals, provided they have submitted a renewal application by the December deadline. If a license is lost or destroyed, a replacement license is issued for a $2.00 fee.

Quarterly Filing Deadlines and Penalties

Delaware requires carriers to file IFTA tax returns on a quarterly basis even if no taxable fuel was used or no miles were driven during the period. The deadline for the first quarter (January-March) is April 30; the second quarter (April-June) is July 31; the third quarter (July-September) is October 31; and the fourth quarter (October-December) is January 31. If the deadline falls on a weekend or state holiday, the return is due the next business day. Delaware imposes a late filing penalty of $50.00 or 10% of the total tax due, whichever is greater. Interest is also applied to any unpaid tax at a rate of 1% per month, calculated from the date the tax was originally due until the date paid.

Record Keeping and Documentation Standards

Under the IFTA agreement and Delaware state law, carriers must maintain Individual Vehicle Distance Records (IVDR) for every trip. These records must include the date of the trip, origin and destination, route of travel including highway numbers, beginning and ending odometer readings, and total distance traveled in each jurisdiction. Fuel records must be supported by original receipts or invoices that show the date of purchase, seller's name and address, number of gallons purchased, fuel type, and the price per gallon. Delaware DMV auditors may review these records at any time within a four-year period to verify the accuracy of the reported figures. Digital records are acceptable provided they meet the standards set by the IFTA Procedures Manual.

Online Filing via Delaware DMV

Delaware encourages motor carriers to use the DMV’s online portal for filing quarterly tax returns and renewing licenses. To use the online system, carriers must first have an active IFTA account and a registered PIN provided by the state. The electronic system calculates the tax or credit due for each jurisdiction automatically based on the mileage and fuel data entered by the user. If the return results in a net tax due, payment can be made via Electronic Funds Transfer (EFT) or credit card. Conversely, if the return shows a credit, the carrier can choose to apply the credit to future quarters or request a refund check from the Delaware Department of Transportation.

Exemptions and Special Permits

Not all miles driven in Delaware are subject to IFTA reporting. For instance, miles driven by vehicles owned by the United States government, the State of Delaware, or its political subdivisions are generally exempt. Additionally, carriers who do not wish to maintain an IFTA license because they rarely travel outside of Delaware can purchase a 72-hour trip permit. This permit costs $20.00 and allows a vehicle to operate in Delaware without an IFTA credential for three days. However, the carrier must also obtain similar permits for every other state they enter during that trip, which often makes the permanent IFTA license more cost-effective for regular interstate commerce.

IFTA Audits in Delaware

Delaware is required by the IFTA Articles of Agreement to audit at least 3% of its licensed base every year. Audits are conducted to ensure that the state is receiving its fair share of fuel tax revenue and that carriers are maintaining adequate records. During an audit, the DMV will examine fuel receipts and distance logs to check for gaps in odometer readings or inconsistencies in fuel economy (MPG) calculations. If an audit reveals that a carrier under-reported their tax liability, the carrier will be issued an assessment for the additional tax, plus interest and potentially a 10% negligence penalty. If records are deemed completely inadequate, the auditor may apply a standard MPG of 4.0, which significantly increases the tax burden for the carrier.

Sources

Delaware Division of Motor Vehicles (2024) — https://dmv.de.gov/services/mc/index.shtml?dc=ifta IFTA, Inc. Articles of Agreement (2023) — https://www.iftach.org/manuals/2023/AA/Articles%20of%20Agreement%20January%202023.pdf Delaware Code Title 30 Chapter 52 (2024) — https://delcode.delaware.gov/title30/c052/index.shtml

Frequently asked

What is the cost of IFTA decals in Delaware?

Delaware charges $5.00 per set of two decals, which must be replaced annually. There is no additional fee for the IFTA license itself.

How long must I keep fuel receipts for Delaware IFTA?

You must retain all fuel receipts and mileage records for a minimum of 4 years from the date the tax return was filed or due, according to Delaware DMV and IFTA guidelines.

What happens if I file my Delaware IFTA return late?

A late filing results in a penalty of $50.00 or 10% of the tax due, whichever is higher, plus a monthly interest rate of 1% on any outstanding balance.

Is a Delaware IFTA license required for a truck weighing 25,000 lbs?

No, a license is only required if the gross vehicle weight or registered weight exceeds 26,000 pounds, or if the vehicle has three or more axles regardless of weight.

Can I get a refund if I buy more fuel in Delaware than I use there?

Yes, if your quarterly return shows that you paid more tax at the pump than you owed based on your mileage in that state, you will receive a credit which can be refunded or applied to future tax liabilities.