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Mileage Calculator

Mileage reimbursement and the real cost of a trip.

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Your running costs

Cost breakdown

ComponentPer yearPer unitThis trip

Claim at different rates

RateClaimAgainst cost

Mileage claim

—

The real cost

Fuel only—
Total running cost—
Cost per unit—
Total distance—

—

Claim against actual cost

A standard mileage rate is meant to cover the whole cost of running a vehicle — fuel, servicing, tyres, insurance and depreciation — not fuel alone. Commuting between home and a regular workplace is normally personal travel rather than business travel in most tax systems.

Quick Tool Overview

The Mileage Calculator works out what a journey is worth as a reimbursement claim and what it actually costs to drive, with fuel, servicing, tyres, insurance and depreciation broken out — because those two numbers are rarely the same.

What it does
Calculates mileage reimbursement and true running cost
You give it
Distance, a rate, and your vehicle running costs
You get back
Claim value against actual cost, with the gap
Best for
Business mileage claims and expense reports
Calculators Free, unlimited use No sign-up Runs in your browser

About the Mileage Calculator

Calculate what a journey is worth as a mileage claim and what it actually costs to drive. Standard reimbursement rates are built in, and a separate breakdown shows the true running cost once fuel, servicing, tyres, insurance and depreciation are counted.

Those two numbers are rarely the same, and the gap is the point. A standard rate is a flat figure meant to approximate the total cost of running a vehicle across a whole population, so an efficient older car driven a lot will usually come out ahead on a per-mile claim, while a new car losing value quickly may cost more to run than the rate returns. Seeing both side by side is what makes the claim meaningful.

Key features of the Mileage Calculator

Claim and cost side by side

The reimbursement against the real cost, which is what tells you whether the rate is generous.

Full cost breakdown

Fuel, servicing, tyres, insurance and depreciation, not fuel alone.

Standard rates built in

Common reimbursement rates preloaded, or enter your own.

Miles or kilometres

Both distance units and both fuel economy conventions are handled.

Cost per mile

The figure that makes vehicle running costs comparable at a glance.

How to use the Mileage Calculator

  1. 1

    Enter the distance

    In miles or kilometres, for a single trip or a whole period.

  2. 2

    Choose a reimbursement rate

    Common standard rates are listed, or enter your own.

  3. 3

    Add your running costs

    Fuel economy, fuel price, servicing and depreciation.

  4. 4

    Compare the two figures

    What you can claim against what the journey actually costs.

Frequently asked questions

Multiply the business miles driven by the applicable rate per mile. Rates are set annually and differ by country and by vehicle type.

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