Glossary
KYU (Kentucky Weight Distance Tax)
Kentucky's own weight-distance tax for vehicles with a combined licensed weight over 59,999 lbs, tracked and filed separately from IFTA. A carrier can be fully IFTA-compliant and still be out of compliance in Kentucky if it hasn't registered for KYU.
What KYU means in practice
KYU is Kentucky's own weight-distance tax, charged per mile on Kentucky highways for vehicles with a combined licensed weight over 59,999 pounds and filed separately from IFTA. It catches carriers who assume IFTA covers everything, because it has its own licence, its own KYU number displayed on the vehicle and its own quarterly return, filed on the same calendar as IFTA. It applies to carriers based anywhere, so an Ontario or northeastern US fleet whose southbound runs cross Kentucky needs it too.
A carrier that crosses the state once can buy a temporary KYU permit for that trip. Carriers that expect to return take the licence, because permits add up quickly on a corridor state. A quarter with no Kentucky miles still needs a zero return.
The audit risk is a mismatch. Kentucky compares the miles on the KYU return with the Kentucky line of the carrier's IFTA return for the same quarter. Pulling both figures from the same telematics jurisdiction report keeps them identical.
Read the full explainer
The definition above is the short version. The page below explains KYU (Kentucky Weight Distance Tax) in depth, with the rules, numbers and examples behind it.
IFTA in KentuckyGuides that explain KYU (Kentucky Weight Distance Tax)
KYU: common questions
Is KYU the same as IFTA?
No. IFTA is a fuel tax agreement covering many jurisdictions. KYU is Kentucky's own weight-distance tax, charged per mile on Kentucky highways, with a separate licence, KYU number and quarterly return. Both are filed quarterly and both use Kentucky miles, but a carrier can be fully IFTA-compliant and still out of compliance in Kentucky without KYU.
Do I need KYU for one trip through Kentucky?
If the vehicle is over the KYU threshold of 59,999 pounds combined licensed weight, yes: you need either a KYU licence or a temporary KYU permit for that trip. A carrier that crosses Kentucky once can buy the permit. Carriers that return regularly take the licence, since permits add up quickly on a corridor state.
What does a KYU audit check?
A KYU audit checks that the Kentucky miles reported on the KYU return match the Kentucky miles on the carrier's IFTA return for the same quarter, supported by trip-level records. A mismatch between the two is the finding that costs. Taking both numbers from one telematics jurisdiction report keeps them consistent.