Kentucky Weight Distance Tax for Intrastate-Only Carriers vs Interstate Carriers

Oct. 18, 2026, 6:56 p.m.
Both intrastate and interstate trucks over 59,999 lbs need a KYU Account in Kentucky. See how the Kentucky Weight Distance Tax works for each, plus IRP, IFTA, and filing rules.
Intrastate and interstate trucks on a Kentucky highway with a KYU Account for the Kentucky Weight Distance Tax

Kentucky Weight Distance Tax for Intrastate-Only Carriers vs. Interstate Carriers

 

Table Of Contents

 

  • Introduction

  • What the Kentucky Weight Distance Tax Covers

  • How KYU Works for Intrastate-Only Carriers

  • How KYU Works for Interstate Carriers

  • Filing, Payment, and Recordkeeping

  • Common Mistakes to Avoid

  • Why Many Trucking Companies Choose Our Service

  • FAQ

 

Introduction

 

Many carriers assume the Kentucky Weight Distance Tax applies only to long-haul trucks crossing state lines. That isn't how it works. Kentucky's KYU tax is based on the weight of the vehicle and the miles it travels on Kentucky roads, not on whether the trip starts or ends in another state.

So a dump truck that never leaves Kentucky and a tractor-trailer running from Ohio to Tennessee can both need a KYU Account. The tax itself is the same for both. What changes is the other paperwork. This guide covers what each type of carrier needs so you can stay compliant and avoid penalties.

 

What the Kentucky Weight Distance Tax Covers

 

The Kentucky Weight Distance Tax is a mileage tax set by KRS 138.660 and administered by the Kentucky Transportation Cabinet (KYTC) through its Division of Motor Carriers. It applies to vehicles with a combined licensed weight over 59,999 pounds that operate on Kentucky roadways.

Here are the basics:

  • Rate: KYTC lists the rate as 2.85 cents ($0.0285) per mile for Kentucky miles.

  • Who needs it: Every qualified vehicle over the weight threshold, whether it runs intrastate or interstate.

  • Exemption: Vehicles with farm plates are excluded.

  • Occasional trips: Carriers that only enter Kentucky now and then may buy a temporary KYU permit per truck instead of opening a full account.

Rates and rules can change, so confirm current figures with the Kentucky Transportation Cabinet before filing.

 

How KYU Works for Intrastate-Only Carriers

 

Intrastate-only carriers run their trucks only within Kentucky. Construction haulers, aggregate and logging trucks, and local freight operations often fit this profile. These vehicles are usually registered in Kentucky with Kentucky base plates and don't need IRP-apportioned plates.

For these carriers, the key points are:

  • A KYU Account is still required. If the combined licensed weight is over 59,999 pounds, the vehicle owes the Kentucky Weight Distance Tax on every Kentucky mile.

  • All miles are Kentucky miles. Reporting is simpler because there is no split by jurisdiction, but the totals must still be accurate.

  • IFTA usually does not apply. Fuel taxes for qualified intrastate vehicles may fall under Kentucky's separate Intrastate Tax (KIT) program. Confirm with the Kentucky Transportation Cabinet whether your fleet needs a KIT license.

  • Simpler records may be allowed. KYTC indicates that carriers operating only in intrastate commerce may be able to keep quarterly odometer readings per vehicle for some purposes. Verify what applies to your operation.

 

How KYU Works for Interstate Carriers

 

Interstate carriers cross state lines, and some of their miles are on Kentucky roads. That includes Kentucky-based fleets running regional routes and out-of-state carriers passing through on I-64, I-65, I-71, or I-75.

For these carriers, KYU is one of several credentials:

  • KYU Account: Needed for any qualified vehicle that runs on Kentucky roads, no matter where it is based. Only Kentucky miles are taxed.

  • IRP registration: Apportioned plates are generally required for qualified vehicles operating in more than one jurisdiction.

  • IFTA license: Covers fuel tax reporting across member jurisdictions. KYU is separate from IFTA and is not included in your IFTA return.

  • Jurisdiction-level mileage: You must separate Kentucky miles from miles in other states, so your trip records need more detail.

Out-of-state carriers often miss KYU because their home state has no similar tax. Kentucky is one of only a few states that charge a weight-distance tax, so plan for it separately.

 

Filing, Payment, and Recordkeeping

 

Filing works the same way for intrastate and interstate carriers:

  1. Get Your KYU Number. Open a KYU Account with KYTC and list every qualified vehicle in your inventory.

  2. File Quarterly. Returns cover January–March, April–June, July–September, and October–December. KYTC indicates returns and payment are due by the last day of the month after each quarter.

  3. File Even With Zero Miles. If a truck did not run in Kentucky during a quarter, you must still file a zero-mile return. Otherwise you may face penalties, interest, and a $500 revocation fee.

  4. Pay Online. Returns are filed and paid through the KYTC Motor Carrier Portal by credit card or ACH.

  5. Keep Mileage Records. KYTC recommends keeping Individual Vehicle Mileage Records (trip dates, routes, odometer readings, and miles by jurisdiction) along with driver logs and fuel receipts. Its audit guidance says to keep these records for five years.

 

Common Mistakes to Avoid

 

  • Assuming intrastate trucks are exempt. Weight and Kentucky miles decide whether KYU applies, not the type of operation.

  • Treating IFTA as a substitute for KYU. These are separate obligations with separate returns.

  • Skipping zero-mile quarters. A missed filing can lead to penalties and revocation.

  • Leaving vehicles off your inventory. Unlisted qualified trucks can be cited at inspection.

  • Poor mileage records. Weak records make audits harder and can lead to estimated assessments.

  • Using the wrong weight. The 59,999-pound threshold is based on combined licensed weight, so check your registration.

 

Why Many Trucking Companies Choose Our Service

 

Kentucky Trucking Online helps intrastate and interstate carriers set up and manage their KYU Account, file quarterly Kentucky Weight Distance Tax returns, and keep vehicle inventories up to date. We help you see which credentials apply to your operation, so a filing doesn't slip through the cracks.

Owner-operators and fleets of every size get fast, practical support from our team. Carriers remain responsible for following current KYTC rules and keeping accurate mileage records.

 

 

FAQ

 

  • Do intrastate-only carriers need a KYU Account?

    Yes, if the vehicle's combined licensed weight is over 59,999 pounds and it runs on Kentucky roads. Farm-plated vehicles are excluded.

  • Is the KYU rate different for interstate carriers?

    No. The Kentucky Weight Distance Tax applies the same per-mile rate to Kentucky miles for both. Confirm the current rate with the Kentucky Transportation Cabinet.

  • Does my IFTA license cover KYU?

    No. KYU is a separate Kentucky tax and needs its own account and quarterly return.

  • Do I have to file if my truck didn't run in Kentucky this quarter?

    Yes. File a zero-mile return to avoid penalties, interest, and possible revocation.

  • Can an out-of-state carrier make a single trip without a full account?

    KYTC offers a temporary KYU permit per truck for occasional trips. Check current terms before you travel.

 

 

 

For more information, visit the Kentucky Transportation Cabinet.

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