The annual exemption of 10,000 euro
Belgium's capital gains tax on financial assets includes a yearly exemption of 10,000 euro per taxpayer. How it works and why the starting value still matters.
The Belgian capital gains tax on financial assets includes an annual exemption of 10,000 euro per taxpayer, applied to gains realised in a given year. It does not remove the need to establish a starting value for unlisted shares, since the exemption reduces the taxable amount rather than the reference value used to compute the gain.
- The exemption is 10,000 euro per taxpayer, applied per year.
- It reduces the taxable gain, not the reference value used to calculate it.
- The starting value still needs to be established even for modest gains.
How the exemption fits into the calculation
The exemption applies after the taxable gain has been calculated as the difference between the sale value and the reference value at 31 December 2025. Up to 10,000 euro of that gain, per taxpayer per year, falls outside the tax base.
This means the exemption operates as a yearly allowance rather than a lifetime or per-transaction threshold. A taxpayer realising gains across several years benefits from the exemption again in each year in which a gain is realised.
Per taxpayer, not per company or per shareholding
The exemption applies to the individual taxpayer, which matters for shareholders holding stakes in several companies or alongside other financial assets. Gains from different holdings in the same year are combined for purposes of the exemption, rather than each holding receiving its own separate allowance.
For shareholders in family companies where several relatives each hold shares, each individual shareholder has their own exemption, since the tax and its exemption apply at the level of the taxpayer rather than the company.
Why the starting value still needs to be right
Even where a gain is expected to fall below the exemption threshold, the calculation still starts from the reference value at 31 December 2025. An inaccurate or unfavourable starting value, such as one derived mechanically from the statutory formula, can push a gain above the exemption when a properly established value would not.
This is particularly relevant for shareholders planning a sale over several years or in tranches, where the cumulative gain across those years may exceed what a single year's exemption can absorb.
The exemption does not replace documentation
Because tax administrations may review how a gain and its exemption were calculated, shareholders benefit from being able to show how the reference value was established, whether through the statutory formula or an independent valuation report, even in years where little or no tax is ultimately due.
Planning across several years
Shareholders anticipating gains that will exceed the exemption in a single year sometimes consider how sales are timed or structured. This is a matter for tax advice specific to the shareholder's situation, and it depends on an accurately established starting value as its foundation.
Questions on this
Does the 10,000 euro exemption reset each year
Yes. It applies to gains realised in a given calendar year, and a new exemption is available in each subsequent year in which a gain is realised.
Is the exemption shared between joint shareholders
The exemption applies per taxpayer, so each individual holding shares has their own separate exemption, rather than sharing a single amount between multiple shareholders.
Does a low expected gain remove the need for a valuation
Not necessarily. The reference value still needs to be established to calculate the gain accurately, even when the resulting amount is expected to fall within the annual exemption.
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This information is general. It does not take your specific situation into account and is not tax advice.