Affiliate disclosure

This site is free because some links pay a commission. Here is exactly how that works.

The short version

Some links on this site are affiliate links. If you follow one and sign up for a service, Per Mile Math may receive a commission at no additional cost to you. That commission is how the site stays free.

What this does not affect

  • Rates. The IFTA rate table is republished from official filing forms. No commercial relationship changes a rate, a calculation, or a source citation.
  • Calculations. The formulas are the standard IFTA settlement method. They are not adjusted for anyone.
  • Recommendations. A service is only linked where it is genuinely relevant to the page it appears on. Nothing is recommended because it pays more.

How to tell

Affiliate links are marked where they appear. If a page contains affiliate links, it says so above the links rather than only here. Links to official sources — IFTA, state revenue departments, the federal energy price series — are never affiliate links.

Categories that may contain affiliate links

Fuel cards, freight factoring, load boards, truck insurance, and accounting or filing software. These are the services owner-operators actually pay for, which is why they are the services that pay referral commissions.

Your choice

You are never required to use an affiliate link. Every service mentioned can be found directly, and you are encouraged to compare it against alternatives before signing anything. A commission is not a recommendation and is not a substitute for your own diligence.

Questions

If anything here is unclear, or if you believe a link is mislabelled, see the contact route on the about page.

Last updated: November 2026.