Mileage reimbursement calculator
Current official rates for all four countries, with the tier thresholds and caps applied for you — the part where spreadsheets usually go wrong.
Calculate a claim
No data leaves your browser — the maths runs locally on this page.
Three worked examples to sanity-check against
US contractor, 18,000 business miles: 18,000 × 72.5¢ = $13,050. Flat rate, no cap — the IRS structure is the simplest of the four.
UK sales rep, 14,000 business miles: (10,000 × 55p) + (4,000 × 25p) = £5,500 + £1,000 = £6,500. People who multiply all 14,000 miles by 55p overstate the claim by £1,200 — the single most common UK error.
Australian consultant, 7,200 business km: capped at 5,000 × 88¢ = $4,400. The 2,200 km above the cap aren't claimable under this method; at that mileage, compare against the logbook method before lodging.
Edge cases the calculator handles — and ones it can't
Handled: the UK 10,000-mile tier, the Canadian 5,000 km tier and territorial supplement, and the Australian 5,000 km cap (with a warning when you exceed it).
Not handled, by design: mixed-rate years (a trip in December 2025 uses 2025 rates — see the history table), the UK passenger supplement, parking and tolls (claimable on top in the US), and whether a given trip is business travel at all. That last one is a facts-and-circumstances judgment no calculator should make for you; the country pages cover the commuting boundary in each system.
Rate detail by country
Calculator output is an estimate based on the official rates shown; it isn't tax advice and doesn't account for your full situation.