About & methodology

We build free, fast calculators for owner-operators and small fleets. IFTA rates are parsed directly from the official IFTA, Inc. quarterly tax matrix CSV (3Q2026) and refreshed every quarter. Form 2290 HVUT amounts and due dates come from the IRS Instructions for Form 2290 (Rev. July 2026).

All results are estimates and not tax, legal or financial advice. Your base jurisdiction's return, rounding rules and any interest or penalties are what count.