Mileage allowance calculator 2026 Belgium
Calculate your mileage allowance at the official Belgian rate (0.4452 €/km). Multi-trip expense report, amount exempt from tax and social contributions. Free.
Official rate: 0.4452 €/km (from 1 October 2026 to 31 December 2026), maximum amount exempt from tax and social contributions.
Legal basis : arrêté d’indexation trimestrielle, publication au Moniteur belge en attente
Two flat rates coexist, 7 % apart. The quarterly one is the federal civil service rate, which serves as the reference for the private sector on business travel: most payroll providers apply it by default. The annual one is an option the employer may keep for twelve months. If in doubt, ask your employer which one they use.
| Date | Reason / route | Km | Allowance | |
|---|---|---|---|---|
| €0.00 | ||||
| Total | 0 km | €0.00 | ||
The mileage allowance in Belgium
When you use your personal car for work, you can be compensated per kilometre. The State sets a maximum amount each year that can be reimbursed free of tax and social contributions: for from 1 October 2026 to 31 December 2026, it is €0.4452 per kilometre.
How to use it
Add each trip (date, purpose, distance): the tool calculates the allowance for each trip and the total of your expense report, ready to hand to your employer or accountant.
Business travel or home-to-work commute?
The distinction matters. Business travel, visiting a client, a site, an external meeting, can be reimbursed at the exempt mileage flat rate (€0.4452/km for from 1 October 2026 to 31 December 2026). The fixed home-to-workplace commute follows other rules: employer contribution and deduction of actual or flat-rate business expenses. If in doubt about how a trip should be classified, check with your employer or social secretariat.
Driving a company car? This flat rate does not apply, instead see the benefit in kind (BIK). For a personal vehicle financed through leasing, see our leasing simulator.
Two flat rates, 7 % apart: which one applies?
This is the most common confusion around this allowance, and it changes the amount of your expense claim. Two official scales coexist, both published in the Belgian Official Gazette.
| Scale | Rate | Period |
|---|---|---|
| Quarterly | 0.4452 €/km | from 1 October 2026 to 31 December 2026 |
| Annual | 0.4761 €/km | from 1 July 2026 to 30 June 2027 |
The quarterly rate is the one granted to federal civil servants. The tax authority uses it as the reference for the private sector on business travel, and most payroll providers apply it by default. The annual rate is an option the employer may keep for twelve months, avoiding a quarterly recalculation. If you do not know which one applies to you, ask your employer: over 1 000 km the gap reaches €32.
Frequently asked questions
What is the mileage allowance amount in 2026?
The maximum tax-exempt amount is €0.4452 per kilometre for the period from 1 October 2026 to 31 December 2026. It is reviewed every year on 1 July and published in the Belgian Official Gazette.
Who can benefit from this allowance?
Any worker (employee or self-employed) who uses their private vehicle for business travel. The employer (or the self-employed person themself) can reimburse these kilometres up to the ceiling with no tax or social contributions.
Is it taxable?
No, as long as the allowance does not exceed the official amount (€0.4452/km). Beyond that, the excess can be reclassified as taxable remuneration.
What about civil servants?
The public sector applies a quarterly indexed amount, slightly different from the annual flat rate. This tool uses the annual flat rate, the one most widely applied.
Does this cover the home-to-work commute?
This allowance primarily targets business travel (assignments, client visits, site visits). The fixed home-to-workplace commute follows separate rules (employer contribution, business expenses): the mileage flat rate does not automatically apply there.
How do I justify my kilometres?
Keep a dated record of each trip: date, purpose, route and distance. That is exactly what the tool above produces, as an expense report ready to hand to your employer or accountant.
Related tools
