Texas IFTA Filing Walkthrough (Quarterly)

Texas splits its trucking credentials between agencies, and IFTA belongs to the Comptroller of Public Accounts: Form AP-178 to register, Webfile to file. The sourced fee and penalty facts live on the Texas IFTA page; this walkthrough puts them in order.

Step 1: confirm Texas is your base jurisdiction

You need a Texas IFTA license when qualified motor vehicles based in Texas run into at least one other IFTA jurisdiction. If interstate trips are rare, compare the per-entry trip and fuel permits math first: the fuel trip permit is priced per entry and capped at a handful of entries per year, and past that point the license wins.

Step 2: file Form AP-178

Register online through the Comptroller's Webfile system or submit paper Form AP-178 by mail, fax, or email. The application asks for your FEIN or SSN, Texas taxpayer number if you have one, your apportioned cab card account or Texas plate numbers, USDOT number, fuel types, and the jurisdictions where you operate and store bulk fuel. Decals issue for each qualified vehicle listed, and the Comptroller states no license fee on the form or its IFTA page.

Step 3: keep the quarter's records as you go

Each return needs miles and gallons per jurisdiction. Texas audits reconcile those totals against ELD history and fuel receipts, so keep both running rather than rebuilding them at the deadline. The national how to file IFTA guide covers the record set in detail.

Step 4: file and pay through Webfile

Returns are quarterly, filed in Webfile, due even for zero-travel quarters. The return applies each jurisdiction's current rate; the Texas diesel line this quarter is $0.2000IFTA Fuel Tax Rate Matrix, 3rd Quarter 2026 (International Fuel Tax Association, Inc. (IFTA, Inc.))Verified Jul 18, 2026 per gallon in the national matrix. Sanity-check your quarter with the IFTA calculator and compare lines on the IFTA rates by state table before submitting. Late or missing returns draw a penalty of a flat amount or a share of the delinquent tax, whichever is greater, plus annual interest; the current sourced figures render on the Texas IFTA page.

Step 5: renew annually and watch the decals

Texas renews IFTA on the calendar year. Order decals with the renewal, keep a copy of the license in each cab, and cancel the license if you drop interstate operation rather than filing zeros forever.

FAQ

Who administers IFTA in Texas?

The Texas Comptroller of Public Accounts, not TxDMV. Registration uses Form AP-178 and quarterly returns run through the Comptroller's Webfile system.

Does the Texas IFTA license cost anything?

The Comptroller's IFTA page and Form AP-178 state no license fee, so this site records none rather than guessing; the sourced detail is on the Texas IFTA page.

What happens if a Texas IFTA return is late?

Texas assesses a late penalty of a flat amount or a percentage of the delinquent tax, whichever is greater, with interest accruing on top; the current sourced figures render on the Texas IFTA page.