Belgian Capital Gains Tax Calculator

Estimate the Belgian tax on a realised gain from shares, ETFs or crypto under the 2026 rules.

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Asset type

Acquisition period

Original acquisition value (€)

Value on 31 December 2025 (€)For pre-2026 assets, this normally protects gains accumulated before the reform.

Sale or disposal value (€)

Other eligible gains this year (€)

Other deductible losses this year (€)Do not include historical losses accumulated before 2026.

Unused exemption carried forward (€)Maximum €5,000, built up over up to five qualifying years.

Tax already withheld (€)

The account is held with a foreign broker or platform

How this estimate works

The ordinary calculator nets eligible realised gains and losses, subtracts the €10,000 basic annual exemption plus any valid carry-forward (maximum total exemption: €15,000), and applies the standard 10% rate. It then compares the estimate with tax already withheld.

Important: This educational estimate is based on Belgian rules applicable from 1 January 2026. It does not calculate TOB, Reynders tax, dividend withholding tax, the annual securities-account tax, foreign taxes, professional or speculative income, exit tax, internal transfers, gifts or inheritance. It is not tax, legal or investment advice. Verify the result with the Belgian FPS Finance or a qualified adviser before filing.