Kentucky Gas Tax Calculator
2026Kentucky charges 26.4¢ a gallon in state tax on gasoline and 23.4¢ on diesel in 2026, on top of the federal 18.4¢ and 24.4¢: 44.8¢ and 47.8¢ a gallon in all. Estimate your fuel costs.
By Konstantin Iakovlev · Updated October 19, 2026 · Methodology
Fuel Needed
1.0 gal
Trip Cost
$4.33
Annual Cost
$1,125.80
Fuel Cost Breakdown
| Total Distance | 30.0 miles |
| Fuel Needed | 1.00 gallons |
| One-Way Cost | $4.33 |
| Trip Cost | $4.33 |
| Weekly Cost | $21.65 |
| Monthly Cost | $93.82 |
| Annual Cost | $1,125.80 |
Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.
Kentucky Gas Tax Overview
Kentucky’s state tax on gasoline is 26.4¢ a gallon and 23.4¢ on diesel, the rate in force since July 1, 2026. That is the 34th-highest state gasoline tax of the 50 states and DC. Normally reset each July 1 at 9% of the average wholesale price; the 2026–27 increase is frozen by emergency regulation.
With the federal 18.4¢, a gallon of gasoline carries 44.8¢ of per-gallon tax, so a 15-gallon fill-up includes about $6.72 of fuel tax whatever the pump price.
The rate is due to be reset on July 1, 2027; the new figure is not published yet.
Kentucky Fuel Taxes (2026)
| State Gasoline Tax | 26.4¢/gal |
| State Diesel Tax | 23.4¢/gal |
| Federal Excise Tax | 18.4¢ gasoline / 24.4¢ diesel |
| Total per Gallon | 44.8¢ gasoline / 47.8¢ diesel |
| How the State Rate Is Built | Gasoline: 20¢ excise + 5¢ supplemental highway tax + 1.4¢ environmental assurance fee. Diesel: 20¢ excise + 2¢ supplemental highway tax + the same 1.4¢ fee. |
| Next Change | July 1, 2027: new rate not yet published |
Official Sources: