Every state line is a line on your fuel tax return.
Example trip · Dallas to DenverDallas, TX to Denver, CO
0 / 1,000 mi · 150 gal bought in Texas · 6.67 MPG
Example numbers using 4th quarter 2026 rates. The fuel you buy in Texas starts as a credit, and every mile you burn in a state eats into it.
Final result for this trip: Texas, 420 miles, 63 gallons burned, −$17.40; New Mexico, 280 miles, 42 gallons burned, $8.82; Colorado, 300 miles, 45 gallons burned, $15.08. You owe $6.50.
The trip pack
Paper in the binder. Math on the phone.
The pack is a printable trip sheet and fuel log, plus a code for the app. Scan it once and the app opens on your phone. When the fuel tax rates change each quarter, the app updates on its own. You buy it once.
- 01Buy the pack on Etsy
- 02Print the sheets, keep them in the cab
- 03Scan the code on page 1 to open the app
01Write the odometer at each state line
02Scan the code on page 1
03Your IFTA bill, before it's due
04The IFTA report fills itself in
Free tools. No sign-up, no email.
Same math as the app. Use them as much as you want.
- 01IFTA calculatorWhat you owe by stateMiles by state and fuel bought in, what you owe out.
- 02Fuel tax rates by stateAll 58, 4Q 2026All 58 IFTA diesel rates for this quarter, surcharges included.
- 03Load checkerTake it, thin, or walkRate, miles and fuel. Take it, thin, or walk.
- 04Cost per mileKnow your floorWhat every mile costs you before you book the next load.
How we check the math
Right to the cent.
Our IFTA math lands on the same numbers as a real state return, published worked examples and four state manuals. Not close. The same, down to the penny. We also run 10,000 test returns before every update.
- Tennessee sample return, 33 statesPass
- Penske, Argo and 2026 worked examplesPass
- Rounding examples from 4 state manuals9 of 9
- Rates vs official 4Q 2026 table60 of 60
- 10,000 test returns, solved two waysAll match
Fuel tax rates
Diesel rates for the 4th quarter 2026.
Straight from the IFTA rate table, all 58 jurisdictions with surcharges.
See all 58 rates| STATE | PER GAL | SURCHARGE |
|---|---|---|
| California | $0.979 | - |
| Kentucky | $0.220 | $0.105 |
| Pennsylvania | $0.741 | - |
| Texas | $0.200 | - |
| Virginia | $0.336 | $0.143 |
| Oklahoma | $0.190 | - |