About Mileage by State
Radif Partners builds this site from the files the federal government publishes for travel: the GSA per diem tables for fiscal years 2026 and 2027 with their monthly lodging maximums, the meal breakdown and the day rules of the Federal Travel Regulation, the IRS mileage rates of January and July 2026, EIA fuel and electricity prices and EPA vehicle consumption. Each trip is added up in your browser, line by line, with the rule that produced every amount.
Why this site exists
Filling in a travel voucher should not take three browser tabs: the GSA lookup for the lodging cap, a second page for the meal breakdown, a third for the mileage rate, then a spreadsheet to apply the 75% rule and subtract the conference lunch. This site does better than the first Google result for per diem and mileage searches because it computes the full reimbursement of a trip in one screen, with the GSA FY2027 tables and the IRS rate of 76 cents in force since July 1, 2026, where gsa.gov gives one rate per city and leaves the trip, the provided meals and the miles to the traveler.
Who publishes it
The site is published by Radif Partners, a company that builds calculators on public data. It is not a travel management company, an expense app, an employer or a government office, and it has no commercial link with any of them. No page asks for an e-mail address, no tool needs an account, and there is no advertising on the site today.
Radif Partners
49 rue du Ressort
63000 Clermont-Ferrand, France
contact@mileagebystate.com
What the calculators rest on
The lodging and M&IE figures are the GSA files themselves, both fiscal years, rebuilt by a script: 301 area records with twelve monthly lodging maximums each and 40,426 ZIP codes. Census files place 2,387 cities in their county so that a search by city name finds the right area. Day rules come from the Federal Travel Regulation as rewritten in December 2025, mileage from the IRS notice and announcement of 2026, the high-low and transportation rates from IRS Notice 2026-60, fuel prices from the Energy Information Administration and vehicle consumption from the EPA. Where no official figure exists, as for the yearly loss of value of a car or the price at a public charger, the tool asks you for it and says so.
How the site is checked
Each rule is coded once and tested against the official examples: the GSA first and last day amounts of every tier, a trip across September 30, the July 1 mileage break, the OCONUS breakdown table from $1 to $265. The method page lists the rules and the tests; the editorial policy explains how errors are corrected.
Contact
A figure that looks wrong, a newer release, a state rule worth adding: contact@mileagebystate.com or the contact page. We cannot read your employer's travel policy or approve a voucher, but every message about a rate is checked against its source.