How to Calculate Mileage Reimbursement Correctly

Keep an expense claim tied to recorded eligible distance and the applicable rate.

Use the Mileage Reimbursement alongside this illustrative example.

A practical example

For a hypothetical approved journey of 120 miles and an agreed rate of 0.50 per mile, reimbursement is 60.00. If a journey log is in kilometres, convert the distance before applying a per-mile rate; multiplying kilometres directly by that rate overstates the claim.

Check the result

Record the date, business purpose and route with each distance. Compare the calculated amount with your employer’s policy and check whether tolls or parking are claimed separately.

Try a comparison

Keep the agreed example rate at 0.50 and change eligible distance from 120 to 100 miles. The calculated claim drops from 60 to 50. Reconcile the changed distance with the journey log before submitting a revised expense amount.

What this does not establish

An entered rate is not automatically a tax-authority rate or proof that the trip qualifies. Verify the relevant year and policy before submitting a claim.

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