Terms of Use

What you are agreeing to

By using this site you accept these terms. If you do not accept them, do not use the site.

No tax, legal, or accounting advice

Per Mile Math is a calculator and reference tool. Nothing on this site constitutes tax, legal, accounting, or professional advice, and using it does not create any professional relationship. You are responsible for the returns you file and for verifying every figure against the official IFTA matrix and your own records.

Accuracy and rates

IFTA rates are set quarterly and can change mid-quarter through jurisdiction notices, fuel tax holidays, and temporary relief programmes. Rates on this site are republished from public filing forms at the time shown on each page. They may be out of date, incomplete, or superseded at any moment.

The authoritative source is the official matrix published at iftach.org. Where this site differs from that matrix, the matrix is correct.

Provided "as is"

The site is provided on an "as is" and "as available" basis, without warranties of any kind, express or implied, including fitness for a particular purpose or accuracy. To the fullest extent permitted by law, Per Mile Math is not liable for any loss, penalty, interest, or damage arising from use of the site or reliance on its output, including underpayment or overpayment of fuel tax.

Acceptable use

You may use the calculators freely for personal and business purposes. You may not attempt to disrupt the site, scrape it at a rate that degrades service for others, or present its output as an official jurisdictional publication.

Third-party links

Links to outside services are provided for convenience. Per Mile Math does not control those services and is not responsible for their content, terms, or practices. See the affiliate disclosure for commercial relationships.

Changes

These terms may be updated as the site changes. The version published here is the version in effect.