What fields are required in a mileage receipt to survive a tax audit?

An audit-ready receipt should contain: employee name and tax ID, vehicle plate, trip date, origin and destination addresses, distance traveled, per-km rate applied, total amount, commercial purpose of the trip, and approver identification.

Does a company need a formal mileage reimbursement policy, or is it sufficient to pay on request?

A formal policy is essential for reimbursements to retain their indemnity status. Without documented criteria — which trips qualify, which rate applies, who approves, and submission deadlines — tax authorities may challenge deductibility and reclassify amounts as remuneration.

Mileage reimbursement: why documentation became a critical point in 2026

Eduardo Vieira — Head of Sales at Clara · Creator of Quilometragem.com.br

Published: 7/28/2026 • Last reviewed: 7/28/2026 • 6 min read

Eduardo Vieira explains why mileage reimbursement requires policy, professional purpose, and audit-ready receipts in 2026.

Mileage reimbursement: why documentation became a critical point in 2026

Article available in Portuguese

This article was written in Portuguese and is available in full at quilometragem.com.br.