# Mileage reimbursement for international trips

> Learn how to calculate and document mileage reimbursement during international business trips.

**Author:** Sarah Chen — International Tax & IRS Specialist  
**Published:** 2025-09-01  
**Updated:** 2025-09-01  
**URL:** https://quilometragem.com/blog/mileage-reimbursement-for-international-trips

**TL;DR:** Learn how to calculate and document mileage reimbursement during international business trips.

- Learn how to calculate and document mileage reimbursement during international business trips.
- International business trips present unique challenges for mileage reimbursement, especially when renting vehicles.
- First, determine which currency will be used for reimbursement.
- Some companies convert to local currency, others keep it in foreign currency.

International business trips present unique challenges for mileage reimbursement, especially when renting vehicles.

First, determine which currency will be used for reimbursement.[^irs-foreign-perdiem] Some companies convert to local currency, others keep it in foreign currency. Define this before the trip.

For rented vehicles, document rental amount, fuel, and tolls separately. These costs can be fully or partially reimbursed according to company policy.

Quilometragem supports multiple currencies, allowing receipt creation in BRL, USD, MXN, COP, or local currency. Exchange conversion can be done automatically based on daily rates.

Keep all original receipts: rental contract, fuel receipts, and toll documentation. This is essential for audit and international tax compliance.

## Frequently asked questions

### How to reimburse international trips?

Use the rate of the country where the trip occurred, convert by the official exchange rate of the reimbursement day and attach local receipts (fuel, tolls, rental).

### In which currency should the reimbursement be paid?

Pay in the employee's employment-contract currency, but log the original foreign-currency value in parallel for accounting purposes.

### Are foreign tolls reimbursable?

Yes, they are reimbursable when tied to the business trip. Keep a printed slip or electronic receipt with date and location.

## Sources

- [U.S. Department of State — Foreign Per Diem Rates](https://aoprals.state.gov/web920/per_diem.asp) — U.S. Department of State (2026-04-28)
- [Receita Federal — Despesas com viagens ao exterior](https://www.gov.br/receitafederal/pt-br) — Receita Federal do Brasil (2026-04-28)