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Flat-rate professional expenses as a self-employed person: pros and cons.

Last updated: 22 May 2026

Details

Short explanation

As a self-employed person you are taxed on your taxable income (for a sole proprietorship: your profit). By deducting professional expenses, you reduce your taxable base.

You typically have two approaches:

  1. Actual expenses: you deduct real costs and keep evidence.
  2. Flat-rate expenses: you deduct a fixed percentage/flat amount set by the tax authorities, without receipts.

In practice you choose the option with the highest total deduction.

Actual vs. flat-rate

  • Actual expenses
    • Deduct your real expenses.
    • You must be able to prove them.
    • Often more advantageous when you have meaningful costs (equipment, car, office, …).
  • Flat-rate expenses
    • Deduct a flat amount without proof.
    • Often interesting when you have low expenses.
    • Subject to caps, so you can hit the maximum quickly.

Pros of flat-rate expenses

  • Less admin work.
  • More predictability.
  • Useful when actual costs are very low.

Cons of flat-rate expenses

  • Often a lower deduction than actual costs.
  • Less tailored: you cannot separately deduct specific extra costs beyond the flat amount.

Indicative caps (as stated in the source)

Source

https://dexxter.be/forfaitaire-beroepskosten-voordelen-nadelen/

Want to know more?

This article was written with AI and may contain inaccuracies. Visit the source website to consult the original information.

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