# Belgium's parliament adopts a 10% capital gains tax on financial assets, retroactive to January 2026 > Belgium's Chamber of Representatives formally adopted on 3 April 2026 legislation introducing a 10% solidarity contribution on realised gains from stocks, bonds, funds, and crypto, with a €10,000 annual per-person exemption; Belgium had been one of the last EU member states without a general tax on investment returns **Meta:** type: event · date: 2026-04-03 · heads: 谁的钱, 谁说了算 · 5 takes · 4 lenses · 1 regions ## Summary Belgium's Chamber of Representatives adopted legislation on 3 April 2026 introducing a 10% "solidarity contribution" on realised capital gains from financial assets, retroactive to 1 January 2026. The law covers gains from stocks, bonds, investment funds, crypto assets, insurance contracts (branch 21 and 23), and currencies. It uses each asset's December 31, 2025 market value as the cost basis for pre-existing holdings, meaning only appreciation after 2025 is taxable. Each individual taxpayer receives a €10,000 annual exemption (indexed annually); losses can be carried forward at up to €1,000 per year for five years (maximum €15,000 total). Holders of substantial participations, defined as 20% or more of a company's capital, face a different progressive regime: the first €1 million in gains is exempt, with rates ranging from 1.25% (on €1-2.5m) to 10% (above €10m). Belgium had been one of the last EU member states without a general capital gains tax on private investors. The law had been negotiated as part of the Arizona coalition's January 2025 government agreement, approved by the Council of Ministers in July 2025, and reviewed by the Council of State before final adoption. ## The split The De Wever government and Arizona coalition presented the tax as a contribution to fiscal consolidation that, for the first time, brought investment income within Belgium's tax system. The deliberate choice to name it a "solidarity contribution" rather than a "capital gains tax" reflected political sensitivity within the coalition about the optics of taxing capital. Business and investment communities criticised the valuation methodology for unlisted companies and the extension of the tax to assets held through foreign brokers. No formal coalition break emerged over the measure. Opposition on the left argued the 10% rate and the €10,000 exemption were too generous; they had proposed higher rates applied from lower thresholds. ## By the numbers - 10%, solidarity contribution rate on realised capital gains - €10,000, annual per-person exemption (indexed) - €1,000/year, maximum annual loss carry-forward (for 5 years; €15,000 total) - €1 million, exempt threshold for substantial-participation holders (holders of 20%+ of a company) - 3 April 2026, date Chamber of Representatives adopted the law - 1 January 2026, retroactive effective date (based on December 31, 2025 cost basis) ## Why it matters The law ends Belgium's status as a Western European holdout without a general capital gains levy, a gap that had long attracted criticism from fiscal economists and the EU as distortive. It also establishes a precedent for how political coalitions can structure such reforms, using a framing shift ("solidarity contribution") and generous exemptions to reduce investor resistance. For the EU, Belgium's adoption may reinforce pressure on the few remaining member states without similar taxes. For investors with Belgian exposure, the retroactive cost-basis rule largely neutralises historical gains, making the practical impact smaller than the headline rate suggests. ## What to watch - Whether the Belgian tax authority clarifies treatment of crypto staking rewards, derivatives, and structured products not explicitly covered in the law. - Whether the effective yield from the tax meets budget projections, given the extensive exemption architecture. - Whether Belgium's financial sector sees outflows to jurisdictions without similar taxes. - Whether the coalition revisits the rate in the 2027 budget cycle. ## Regional takes (batched by bias / lens) ### Big-four advisory firm; reported same-day Parliamentary adoption with technical breakdown of the enacted law - **KPMG Belgium** (Europe, en) — Confirmed the Chamber of Representatives approved the capital gains tax law on 3 April 2026, making it retroactive to 1 January 2026. Detailed the 10% rate on realised gains from securities, funds, crypto, and insurance products; €10,000 annual exemption per person (indexed); loss carry-forward of up to €1,000/year for 5 years (max €15,000); and a special progressive regime for substantial participations (20%+ stake holders) with the first €1 million exempt. > "Belgian capital gains tax approved by Parliament on 3 April 2026, effective retroactively from 1 January 2026." Source: https://kpmg.com/be/en/insights/my-tax-compass/corporate-tax-insights/belgian-capital-gains-tax-approved-by-parliament.html ### Big-four advisory; detailed analysis of exemptions, substantial-participation thresholds, and cost-basis rules for pre-2026 holdings - **EY Belgium** (Europe, en) — Explained that December 31, 2025 market value serves as the cost basis for pre-2026 holdings, so only appreciation after 2025 is taxed. Covered the crypto and branch 21/23 insurance contract treatment, the loss carry-forward rules, and the special progressive rates for substantial participations. Noted the law's official designation as a 'solidarity contribution' rather than 'capital gains tax' as a deliberate political framing choice. > "Belgium's new capital gains tax: what changes in 2026, covering cost basis, exemptions, and substantial-participation rules." Source: https://www.ey.com/en_be/insights/tax/the-new-belgian-capital-gains-tax-what-changes-in-2026 ### Big-four advisory; investor-impact analysis with emphasis on crypto and international asset holders - **PwC Belgium** (Europe, en) — Covered the full asset scope (stocks, bonds, funds, crypto, insurance products, currencies), the declaration and withholding obligations, and implications for non-resident investors with Belgian-source gains. Noted the law extends to assets held through foreign brokers, requiring self-declaration. > "Belgium's comprehensive capital gains tax changes: key updates and implications for investors from January 2026." Source: https://news.pwc.be/belgiums-comprehensive-capital-gains-tax-changes-key-updates-and-implications-starting-january-2026/ ### unlabelled - **Loyens & Loeff** (Europe, en) — Source: https://www.loyensloeff.com/insights/news--events/news/capital-gains-tax-in-belgium-becomes-reality-as-from-1-january-2026/ - **Deloitte Belgium** (Europe, en) — Source: https://www.deloitte.com/be/en/services/tax/research/draft-law-introducing-the-taxation-of-capital-gains-on-financial-assets.html ## Across the graph - Entities: Belgium --- Canonical: https://rbtfl.xyz/zh/n/belgium-capital-gains-tax-2026