We assist motor carriers with KYU registration, temporary permits, and ongoing compliance so you can operate without delays.
KYU stands for Kentucky Unified Carrier. A KYU number is required for certain motor carriers operating vehicles over 59,999 lbs. so the carrier can report taxable mileage under Kentucky’s weight distance tax program. If you regularly move freight through Kentucky, you typically need to maintain a KYU account and file on the state’s quarterly schedule. If your trips are more occasional, a Temporary KYU Permit for a limited, trip-specific window may let you stay compliant without completing full registration. In either case, accurate records matter — especially mileage, vehicle/unit information, and any required documentation — so your filings match the units you operate. If you operate qualifying vehicles in Kentucky, you may need:
The KYU Account Number is a unique identifier issued by the Kentucky Transportation Cabinet. It’s required for motor carriers operating vehicles over 59,999 lbs. so they can report mileage and pay the state’s weight distance (KYU) tax accurately.
A Temporary KYU Permit allows carriers to operate in Kentucky legally for a short period without full registration. Typically valid for 10 days, it’s ideal for occasional trips into the state.
Motor carriers with a KYU number must report their vehicle mileage and pay the Kentucky weight distance tax every quarter. Timely filings ensure compliance and help avoid penalties.
If you need to add an additional truck to your account, please contact our support team—we will help you add the vehicle to your existing KYU registration.
In Kentucky, the maximum legal weight for a single vehicle is 80,000 lbs. on the interstate system. Heavier trucks may require special permits, and trucks over 59,999 lbs. must obtain a KYU number to report mileage for the state’s weight distance tax.
May need additional Kentucky permits beyond KYU, depending on route and configuration.
KYU is separate from IRP plate and IFTA fuel reporting—carriers often manage all three.
Solid mileage records make quarterly tax filing faster and reduce audit risk.
In addition to Kentucky, several other states also have similar weight-mile or highway-use tax programs.
| Feature | KYU Registration | Temporary KYU Permit |
|---|---|---|
| Duration | Permanent | Trip-specific (10 days) |
| Who it’s for | Carriers that frequently operate in Kentucky | Carriers that only occasionally enter Kentucky |
| Tax filing | Quarterly Tax Filing required (Form KYU-100) | No ongoing filings required |
| Cost | Mileage-based tax | Flat fee per permit |
| Processing time | Typically same-day | Same day (if state system is not down) |
| Required documents in vehicle | KYU Number license | Temporary permit digital document |
| Benefits | Streamlined ongoing operations, avoids repeated permits | Flexible for one-time or rare trips without full registration (no mileage tax) |
| Compliance requirement | Must maintain accurate mileage records | Only valid for the specific trip/date range |
Late filings may result in financial penalties. Kentucky imposes a one-time penalty of $500 for missed or late filings, plus any additional interest on unpaid tax amounts. Timely submissions help carriers avoid these charges and remain in good standing with the state.
Absolutely! We prepare and file quarterly KYU Permit tax returns on your behalf, ensuring all mileage and tax obligations are reported correctly and on time.
Registration can be completed online or by filing the necessary forms with the the relevant authorities. If this process seems complicated, we can handle the registration for you quickly and accurately.
Any motor carrier operating qualifying vehicles on qualified roadways and roadways must register for KYU Permit and obtain a Certificate of Registration and decals for each vehicle.
KYU Permit tax returns are filed quarterly. You are required to report all taxable mileage traveled on qualified roadways within each quarter.
Non-compliance can result in penalties, fines, and possible suspension of your operations in your area. Regular filings and up-to-date registrations are essential to avoid these consequences.
Contact us immediately. We can help you file late returns and work to minimize any penalties.