How to Set Up IFTA in Kentucky

To set up an International Fuel Tax Agreement (IFTA) account in Kentucky, motor carriers must register through the Kentucky Transportation Cabinet (KYTC) Department of Vehicle Regulation. You qualify if your base of operations is in Kentucky, your records are maintained or can be made available in the state, and you operate qualified motor vehicles in at least one other IFTA jurisdiction. A qualified vehicle is defined by the FMCSA as having two axles and a gross vehicle weight exceeding 26,000 pounds, or having three or more axles regardless of weight, or being used in a combination that exceeds 26,000 pounds. The application process is primarily managed through the Kentucky One Stop Business Portal or the KYTC Motor Carrier Portal. Unlike many other states, Kentucky does not charge an application fee for IFTA credentials or decals, but carriers must be in good standing with all other state taxes. DispatchTool simplifies this regulatory burden by automatically logging GPS-verified mileage across state lines, allowing carriers to generate accurate IFTA-ready reports for their quarterly filings. New carriers should create a DispatchTool account to automate the data collection needed for their first quarterly return.

Determine Your Vehicle Eligibility

Before applying, verify that your equipment meets the IFTA definition of a 'Qualified Motor Vehicle.' This includes any power unit that has a Gross Vehicle Weight (GVW) or registered GVW of 26,001 pounds or more, or any vehicle with three or more axles regardless of weight. If you operate a combination vehicle that exceeds 26,001 pounds, it also qualifies. Kentucky carriers who operate exclusively within the state boundaries do not need IFTA credentials. According to KYTC, if you travel into any of the 48 contiguous U.S. states or Canadian provinces, you must either have a permanent IFTA license or purchase trip permits for every state you enter, which typically cost between $15 and $50 per state per trip.

Establishing a KYTC Motor Carrier Portal Account

The state of Kentucky requires all motor carriers to register via the Kentucky Transportation Cabinet (KYTC) online system. You must first obtain a USDOT number from the FMCSA and a Kentucky Intra-state Tax (KIT) number if applicable. During the setup, you will provide your Federal Employer Identification Number (FEIN) or Social Security Number (SSN). The online portal is the mandatory hub for filing quarterly tax returns and renewing annual credentials. Once your account is verified, you can apply for your IFTA license. Most applications are processed within 7 to 14 business days, after which you will receive two decals for each qualified vehicle in your fleet.

The KYU Number Requirement

Kentucky is unique because it manages a Weight Distance Tax known as the KYU number in addition to IFTA. Any vehicle with a registered GVW of 59,999 pounds or more must have a KYU number to operate on Kentucky highways. While IFTA tracks fuel consumption and mileage across all member jurisdictions, the KYU tax is specific to miles traveled on Kentucky roads. The current KYU tax rate is $0.0285 per mile. You should set up your KYU account at the same time as your IFTA account to ensure total compliance with Kentucky’s Division of Motor Carriers. Failure to maintain a KYU account can result in fines and the impounding of vehicles at weigh stations.

Quarterly Filing Deadlines and Requirements

IFTA returns are due on a strict quarterly schedule: April 30, July 31, October 31, and January 31. You must report the total miles driven in all jurisdictions and the total gallons of fuel consumed. Kentucky requires electronic filing through the KYTC portal. Even if you do not operate during a specific quarter, a 'Zero Report' must still be filed to avoid a $50.00 penalty or 10% of the tax due, whichever is greater. Accurate record-keeping is vital; the IFTA Articles of Agreement require you to maintain summaries of monthly fleet activity and individual vehicle distance records (IVDR) for a period of four years from the filing date.

Fuel Purchase Documentation and Credits

To receive credit for fuel taxes paid at the pump, you must retain original receipts or invoices. These documents must show the date of purchase, seller's name and address, number of gallons purchased, fuel type, price per gallon, and the unit number of the vehicle. In Kentucky, if the amount of fuel tax paid at the pump exceeds the total tax liability for the miles driven in all jurisdictions, the carrier is entitled to a refund or a credit toward future quarters. According to the IFTA Inc. database, tax rates change quarterly for each state, making it necessary to use the current rate table provided by the KYTC during the filing process.

Managing Decals and License Renewals

Kentucky IFTA licenses and decals are valid for one calendar year, expiring on December 31. The renewal period typically opens in October. Unlike many states that charge $10 to $20 per set of decals, Kentucky currently provides decals at no cost to the carrier. However, you must be current on all quarterly filings and have no outstanding tax liabilities with the Kentucky Department of Revenue to receive your new decals. You are allowed a two-month grace period (January and February) to display the new year's decals, provided you have already submitted your renewal application by December 31.

Audit Preparation and Record Retention

The KYTC conducts audits on approximately 3% of IFTA licensees annually to ensure compliance. An audit involves a thorough review of your mileage logs and fuel receipts. Common errors that lead to assessments include missing receipts, mathematical errors in distance calculations, and failure to record non-taxable miles correctly. The ATRI notes that administrative costs for manual record-keeping can exceed $2,000 per truck annually. By utilizing digital tracking, you minimize the risk of human error during these state audits and ensure that every mile is accounted for according to the standards of the International Fuel Tax Agreement.

Sources

Kentucky Transportation Cabinet (KYTC) (2024) — https://transportation.ky.gov/MotorCarriers/Pages/IFTA.aspx IFTA, Inc. (2025) — https://www.iftach.org/ American Transport Research Institute (ATRI) (2023) — https://truckingresearch.org/ Federal Motor Carrier Safety Administration (FMCSA) (2024) — https://www.fmcsa.dot.gov/

Frequently asked

How much does IFTA registration cost in Kentucky?

Currently, Kentucky does not charge a fee for the IFTA license or the sets of decals for your vehicles. However, you must pay any fuel taxes owed quarterly and maintain a $50 minimum penalty for late filings.

Do I need a KYU number if I have IFTA?

Yes, if your vehicle's registered gross weight is 60,000 pounds or more, you must have a KYU number for Kentucky's weight-distance tax in addition to your IFTA credentials for fuel tax.

Can I get a temporary IFTA permit in Kentucky?

Kentucky offers a 10-day temporary IFTA permit for $40 per vehicle. This is intended for carriers who rarely leave the state or are waiting for their permanent credentials to arrive.

What happens if I miss an IFTA filing deadline in Kentucky?

Late filings incur 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 until the balance is paid in full.

How long should I keep my Kentucky IFTA records?

You are required to keep all fuel receipts and mileage records for four years. This includes electronic logs, GPS data, and retail fuel invoices used to calculate your quarterly returns.