Q4 2026 IFTA diesel rate

Kentucky IFTA fuel tax rate, Q4 2026

KYKentucky · diesel$0.2200/gal

Unchanged from Q3 2026.

Checked 2026-10-14 against revenue.ky.gov, Kentucky's own published rate.

Calculate Kentucky for Q4 2026Free. No account.

What you owe Kentucky

IFTA apportions your fuel by miles. Divide total miles by total gallons for fleet MPG, turn your Kentucky miles into taxable gallons, subtract the tax-paid gallons you bought in Kentucky, and multiply by $0.2200.

Example: 1,000 miles in Kentucky at 6.5 MPG is 153.85 taxable gallons. With 100 tax-paid gallons bought there, 53.85 × $0.2200 = $11.85 owed to Kentucky.

Kentucky adds a surtax for heavy trucks on IFTA returns. Not included in the total yet.

This rate is for diesel, Q4 2026. You still file with your base jurisdiction; keep your trip records and receipts.