Review status: Official-source checked Source confidence: medium Source-backed

IFTA Tax Rates

Use this source-backed entry page to locate official IFTA tax-rate resources without relying on copied or stale rate tables.

Quick Answer

IFTA fuel tax rates are published quarterly by IFTA Inc. and each member jurisdiction — the only safe practice is to retrieve the official current-quarter rate matrix directly from your base jurisdiction or IFTA Inc. before calculating a return, because rates change every quarter.

For a broader IFTA workflow, compare this topic with due dates, records, and calculator limitations. IFTA Due Dates, IFTA Records, IFTA Calculator Overview.

Who This Applies To

Carriers preparing to file a quarterly IFTA return and needing the current-quarter fuel tax rate matrix.
Bookkeepers calculating net fuel tax before entering figures into a return.
New authorities learning how the IFTA rate structure works before the first filing.
Anyone who found a fuel tax rate figure on a third-party site and wants to know whether it is current.

What To Verify

That IFTA fuel tax rates change on January 1, April 1, July 1, and October 1 each year. A rate table from the prior quarter is outdated the day the new quarter begins.
That the official current-quarter rate matrix is published by IFTA Inc. at iftach.org and by most base jurisdictions. Third-party rate tables without a source date should not be used for return preparation.
The specific fuel types in use. IFTA rates differ by fuel type — diesel, gasoline, LNG, CNG, and others have separate rate columns. Using the diesel rate for a gasoline vehicle produces the wrong calculation.
Whether any jurisdictions in the fleet's operating area have surcharges that appear as separate line items in the rate matrix.

Step-by-Step Overview

Access the official IFTA rate matrix at the start of each new quarter directly from IFTA Inc. at iftach.org or from the base jurisdiction's IFTA program page.
Confirm the quarter and year on the rate table match the quarter being filed. A table labeled Q2 is not valid for a Q3 return.
Identify the rate for each fuel type used and each jurisdiction operated in. Enter the correct column for each vehicle's fuel type.
Apply rates to jurisdiction miles (gross tax owed) and compare against gallons purchased per jurisdiction (tax paid). Net tax per jurisdiction is the difference.
Retain a copy of the rate matrix used for the quarter alongside the filed return workpapers.

Common Mistakes

Using a rate table found online without confirming it is the current quarter's official matrix. Third-party sites and software tools may use outdated rates.
Applying the same rate to all fuel types. IFTA rates differ by fuel — mixing diesel and gasoline rates produces incorrect calculations.
Missing surcharges. Some jurisdictions have fuel surcharges as separate line items — omitting them understates net tax owed.
Not retaining the rate matrix used for each quarter. An audit questioning a quarterly rate calculation requires the carrier to show which rate was applied and where it came from.

Official Sources

IFTA Tax Rate Matrix and Downloads International Fuel Tax Association, Inc. · official-organization · accessed 2026-05-06
Use only as an official entry point; do not reproduce rates unless the exact current matrix is imported.
IFTA, Inc. Carrier Information International Fuel Tax Association, Inc. · official-organization · accessed 2026-05-06
Use for IFTA educational pages and prompts to contact base jurisdiction.

IFTA Due Dates

Plan IFTA quarterly filing dates, account for weekend or holiday shifts, and confirm the accepted deadline with the base jurisdiction.

IFTA Records to Keep

Understand common IFTA record categories and why carriers should verify retention requirements with their base jurisdiction.

IFTA Fuel Tax Calculator: What to Know Before You File

Understand what an IFTA calculator can and cannot do, and learn why official quarterly rates and base-jurisdiction filing rules still control.

FAQ

Where do I find the official IFTA tax rates for the current quarter?

The official IFTA tax rate matrix is published by IFTA Inc. each quarter at iftach.org. Your base jurisdiction's IFTA office may also publish or link to the rate matrix. Never use copied rate tables from third-party sites, as they may be outdated.

Where are official quarterly IFTA fuel tax rates published?

IFTA Inc. publishes the official quarterly tax rate matrix at its member website after each jurisdiction submits its rates for that quarter. Each base jurisdiction also typically posts current rates through its IFTA program page. Third-party rate tables and calculator tools may lag the official publication date — use the IFTA Inc. matrix or the base jurisdiction's official rate source as the controlling reference.

Are IFTA fuel tax rates the same for all fuel types?

No. IFTA maintains separate rate matrices for diesel, gasoline, ethanol blends, compressed natural gas, and other fuel types. Carriers using alternative fuels must apply the rate table for the specific fuel type used in each jurisdiction. Verify the applicable fuel-type category with the base jurisdiction before completing a return for vehicles using non-standard fuels.