Belgium has spent decades on the list of European jurisdictions with no exit tax, and the description was accurate. There was no deemed disposal of a private estate on emigration, no valuation at the border, no threshold of ownership that brought a departing shareholder into charge. Belgium simply did not tax most private capital gains at all, so there was nothing to accelerate on departure.
That last clause is the one that has changed. With the law of 6 April 2026 introducing a tax on capital gains on financial assets, which takes effect for gains arising from 1 January 2026, Belgium acquired a charge on private gains and, with it, a rule that treats emigration as a realization of those gains. The country still has no general exit tax on the whole estate. What it now has is a targeted departure charge inside a new capital gains regime, and describing it accurately means describing the regime it sits in.
What the new charge is, and what it is not
The regime taxes capital gains on financial assets realized outside professional activity, as a category of miscellaneous income. Where the realization falls within the normal management of private wealth and is not a speculative transaction, it is taxed under the new capital gains rules. Where it does not, the older treatment of miscellaneous income under article 90, first paragraph, 1° of the income tax code continues to apply at its own separate rate, and whether a transaction is abnormal or speculative remains a question of fact assessed against the administration’s test of prudent private management.
The general rate is 10 per cent of the realized gain, charged under article 171, 2°, e) of the income tax code. Below it sits an exempt first tranche. The exemptions listed in article 96/2 fix a base amount of 4,855 euros, which the administration puts at 10,000 euros for assessment year 2027. Unused exemption is not simply lost. Where less than the base amount of 480 euros was used in a taxable period, the shortfall is added to a later year’s exempt tranche, and those additions are capped at a base amount of 2,426 euros per taxable period. The law also directs that the 480 figure be adjusted so that after indexation it equals 1,000 euros for income paid or granted in 2027.
Two structural features shape everything else. Historic gains are exempt, and the valuation rule in article 102 makes the value of the financial assets at 31 December 2025 the reference point for the computation. And the base is net: the positive difference between the price received for the transferred financial assets and their acquisition value, with costs and taxes of whatever nature left out of the calculation.
The substantial holding regime
A separate regime applies where the taxpayer holds a substantial interest, defined by the twenty per cent test in article 90 as at least 20 per cent of the rights in the company whose shares are transferred. The substantial holding rules are narrower in scope than the general rules, because they apply only to shares in companies rather than to financial assets generally.
The consequences of falling inside them are a larger exemption and a different rate structure. A first tranche of 1,000,000 euros is exempt, reduced by the exempt tranche the taxpayer has already used in the four preceding taxable periods, so the relief is effectively one million across a rolling five year window rather than one million a year. Above it the scale is banded, and the rate bands inserted by article 14 read 1.25 per cent up to 2,500,000 euros, 2.5 per cent between 2,500,000 and 5,000,000, and 5 per cent between 5,000,000 and 10,000,000. The excess above 10,000,000 euros sits elsewhere: the same article restores article 171, 2°, f) of the income tax code to cover that band, so its rate is the one that provision carries rather than one written into the scale.
The 20 per cent threshold is a bright line rather than a measure of influence. The regime applies regardless of the identity of the transferee, subject to one exception: by derogation from the banded scale, article 171, 4°, l) of the income tax code applies its own separate rate where shares in a domestic company are transferred to legal persons whose principal establishment or seat of management is not in an Economic Area member state. The former anti abuse provision in article 94 that policed sales to non Economic Area companies has been repealed, because the rate now does the work directly. Internal capital gains realized by sale stay outside the new scale, taxed as before under article 171, 1°, a).
Emigration as a realization
The departure rule is a single item in a list. Alongside the payment of capital and surrender values under life insurance and capitalization contracts, the transfer by a taxpayer of his domicile or seat of fortune outside Belgium is assimilated to a transfer for consideration. The administration’s own departure guidance leaves nothing to interpretation: on the financial assets still held at the date of departure, an exit tax is due.
The valuation rule follows from the assimilation. In the case of emigration, the value of the financial asset at the moment the taxpayer leaves the country is treated as the price received. Against that stands the acquisition value, subject to the 31 December 2025 reference point that keeps historic gains outside the charge.
Two limits are worth recording. The provision applies only where the taxpayer transfers his own domicile or seat of fortune abroad, and the attribution rule in article 92 treats the gains as income of the owner or bare owner of the assets transferred, so the emigration of a usufructuary is not a realization in the hands of the bare owner. And the list of transactions assimilated to a transfer for consideration is closed: article 92, paragraph 2 contains those two items and nothing else.
The automatic deferral, and the twenty four months
The charge is paired with a deferral of payment, and the design is closer to the French model than to the German one. For departures to certain jurisdictions the deferral is automatic. The categories are the European Union, the European Economic Area, and states with which Belgium has concluded a double taxation convention providing for exchange of information and mutual assistance in recovery, much the same perimeter that article 5 of Council Directive (EU) 2016/1164 draws for deferred exit taxation. For other destinations the deferral has to be requested, against adequate security for payment.
The capital gains tax then has to be paid only where the financial assets on which it was charged are realized within two years of the change of domicile. Where the taxpayer re establishes his domicile in Belgium within that same period, the payment obligation lapses. It also lapses on the expiry of a period of twenty four months after the transfer of the domicile, the seat of fortune or the seat of management abroad.
Partial disposals produce partial consequences. A taxpayer who leaves with a hundred shares for another Union member state and sells twenty of them within twenty four months loses the deferral for the twenty sold and keeps it in force for the eighty still held. Where only part of the assets is made subject to a security arrangement, the deferral falls away only in proportion to the tax due on that part.
Where the deferral collapses
Two events end the deferral entirely rather than proportionally. The first is a further move: where the taxpayer transfers his fiscal domicile outside the Union, the Economic Area, or a state with which Belgium has a convention providing for exchange of information and mutual recovery assistance, the deferral falls away in full unless he furnishes adequate security for payment, the same condition that applies to those destinations from the outset. Where he does, the deferral survives the move.
The second is administrative. Under the payment deferral written into article 413/1, the taxpayer must transmit annually an attestation confirming that the conditions for the deferral continue to be met. If the attestation is late or missing, the tax becomes due. The elements that attestation must contain, and the period within which it has to reach the administration, are left to royal decree.
There is also an anti abuse dimension that a departing shareholder should not overlook. The transfer of financial assets without consideration to a non resident taxpayer is not in the closed list, so it is not itself assimilated to a transfer for consideration. That leaves the general anti abuse provision as the answer to a circular arrangement in which assets are transferred to a non resident, realized by him, and then transferred back without consideration for the sole purpose of avoiding the tax.
The other exit tax, and why it is not the same one
Belgium already had a departure charge before this one, and the two are frequently conflated. The exit tax in article 18, first paragraph, 2°quater of the income tax code, introduced by the programme law of 18 July 2025, concerns the emigration of a company, not of an individual. It treats as a dividend the part of the company’s assets that article 209 of the code counts as distributed, limited to the elements that the operation stops using or keeping in Belgium.
The new charge has a different subject and a different measure. It concerns the departure of a taxpayer subject to personal income tax, and the fictitious gain consists of the difference between the value of the financial asset at the moment of departure and its acquisition value. The same programme law added a relief in article 21, first paragraph, 15° of the code, so that a later real distribution out of the assets moved abroad is not taxed a second time.
For a family that holds an operating business through a Belgian company, the two charges are separate decisions with separate consequences. Moving the company triggers one. Moving the family triggers the other. Doing both in the same year triggers both, and the relief that connects them has to be claimed rather than assumed.
What Belgium’s position now amounts to
It remains true that Belgium has no general exit tax on the person. There is no valuation of the whole estate at the border, no charge on business assets held privately and no instalment plan to negotiate over the estate at large. Real property, private company assets outside the financial asset definition and much else cross the border untouched.
What exists is a targeted deemed realization on financial assets, charged at the rates gathered in article 171, 10 per cent in the general case and a scale that starts at 1.25 per cent for substantial holdings, suspended automatically for European and treaty destinations, and extinguished after twenty four months of holding. In present value terms, for a shareholder who intends to hold through that window and remains inside the qualifying perimeter, the charge is capable of costing nothing at all.
That is a materially different proposition from the German or the Norwegian regime, and it is also a materially different proposition from the Belgium described in most cross border memoranda written before 2026. The right summary is neither that Belgium taxes departure nor that it does not. It is that Belgium now charges a specific class of asset on a specific class of departure, on terms that reward holding and tighten on a second move outward, and that the description of Belgium as an exit tax free jurisdiction has quietly stopped being accurate.
This article is informational and does not constitute tax or legal advice. The treatment of any structure depends on its facts and on the law of each jurisdiction involved. Each engagement is subject to scope and applicable regulation.