Tax in Belgium

Who is the tax authority?

The Service Public Fédéral Finances / Federale Overheidsdienst Financiën (SPF Finances / FOD Financiën) is Belgium's principal federal tax authority. It administers personal income tax under the Code des impôts sur les revenus 1992 (CIR/92), corporate income tax (Impôt des sociétés / Vennootschapsbelasting — Isoc/VenB), and TVA / BTW (VAT).

The three Belgian regions — Flanders, Wallonia, and Brussels-Capital — each administer regional taxes including inheritance, gift, registration, and surcharges on personal income tax. The Algemene Administratie van de Fiscaliteit / Administration Générale de la Fiscalité is the operational arm of SPF Finances.

The Institut des Experts-comptables et des Conseils fiscaux / Instituut van de Belastingadviseurs en Accountants (ITAA) regulates the credentialed tax-and-accounting profession, covering both Conseils fiscaux / Belastingadviseurs and Experts-comptables / Accountants.

What is the tax year and when are returns due?

Belgium's personal tax year is the calendar year (1 January – 31 December). Returns are filed through the Tax-on-Web portal during a window that typically opens in May.

The Précompte professionnel / Bedrijfsvoorheffing wage-tax withholding covers employees monthly. Self-employed and other filers pay quarterly Versements anticipés / Voorafbetalingen. Companies file the Impôt des sociétés / Vennootschapsbelasting return within 7 months of fiscal year-end.

Who counts as a Belgian tax resident?

Under Article 3 of the CIR/92, an individual is a Belgian tax resident if they have their domicile (domicile / woonplaats) in Belgium — meaning the centre of family interests — or, where there is no clear domicile, the siège de la fortune / zetel van het fortuin (seat of fortune) in Belgium.

Registration in the Belgian Registre National / Rijksregister creates a rebuttable presumption of domicile. Treaty tie-breaker provisions under Belgium's bilateral DTCs apply wherever two states both treat a person as resident.

Residents pay tax on worldwide income. Non-residents pay tax on Belgian-source income only under the Impôt des non-résidents / Belasting der niet-inwoners.

What are the personal income tax rates?

Belgian Impôt des Personnes Physiques / Personenbelasting (IPP/PB) applies at four federal brackets. A communal additional tax (additionnels communaux / opcentiemen) levied by each of Belgium's 581 communes adds a further 0–9 percent on top of the federal assessment.

The personal exemption (quotité exemptée / belastingvrije som) is approximately EUR 10,570 for 2025, with additional exemptions for dependants. Movable income — interest, dividends, copyrights — is generally taxed at a flat 30 percent précompte mobilier / roerende voorheffing.

Until the end of 2025, capital gains for individual filers on private-asset disposals were generally exempt from Belgian income tax under the gestion normale du patrimoine privé / normaal beheer van privé-vermogen (normal management of private wealth) principle, with speculative gains taxed at 33 percent. From 1 January 2026 a 10 percent capital gains tax (the solidarity contribution, adopted in April 2026 with retroactive effect) applies to gains individuals realise on financial assets - securities, insurance contracts, crypto-assets and currencies - with an annual exemption of EUR 10,000 (up to EUR 15,000 using the carry-forward) and only growth accrued after 31 December 2025 in scope. The 33 percent speculative-gains rule continues for gains outside the new regime.

How does corporate tax work?

Belgium's Impôt des sociétés / Vennootschapsbelasting (Isoc/VenB) standard rate is 25 percent on taxable profits, in force since 1 January 2020 after a multi-year reduction from 33.99 percent. A reduced rate of 20 percent applies to qualifying SMEs on the first EUR 100,000 of taxable income.

Belgium implemented OECD Pillar Two Global Anti-Base Erosion (GloBE) rules via the Loi du 19 décembre 2023 for fiscal years from 31 December 2023. Groups with consolidated revenue above EUR 750 million are subject to the Income Inclusion Rule, Undertaxed Profits Rule, and Domestic Top-up Tax.

The Régime des Revenus Définitivement Taxés / Definitief Belaste Inkomsten (RDT/DBI) participation-exemption regime under Articles 202–205 CIR/92 fully exempts qualifying intra-group dividends from corporate tax. The Belgian CFC regime under Article 185/2 CIR/92 implements ATAD Model B.

What about VAT and indirect taxes?

Taxe sur la Valeur Ajoutée / Belasting over de Toegevoegde Waarde (TVA/BTW) applies within the EU VAT Directive framework. Belgium uses four rates.

The franchise pour petites entreprises / vrijstellingsregeling kleine ondernemingen small-business exemption applies up to EUR 25,000 annual revenue. Cross-border digital services to Belgian consumers are taxed under the EU One-Stop-Shop (OSS) framework.

Mandatory B2B e-invoicing has been confirmed for phased rollout from 1 January 2026 under Belgian post-2024 budget legislation. Intra-community B2B supplies are reverse-charged; the Belgian acquirer self-assesses TVA/BTW.

How are cryptoassets taxed?

Belgian tax treatment of cryptoassets for individual filers turns on a three-way characterisation under the CIR/92.

The Service des Décisions Anticipées (SDA) / Dienst Voorafgaande Beslissingen (DVB) publishes evolving indicative criteria for self-assessment. Filers with complex crypto positions often request an advance ruling from the SDA before filing.

What is the treaty network?

Belgium maintains approximately 95 comprehensive Conventions préventives de la double imposition / Overeenkomsten ter voorkoming van dubbele belasting — one of the largest DTC networks in continental Europe. Most treaties follow the OECD Model with Belgian reservations.

Belgium signed and ratified the OECD Multilateral Instrument (MLI). The MLI's modifications — including the Principal Purpose Test — apply to many of Belgium's covered DTCs for periods from 2020 onward. EU intra-group flows also benefit from the Parent-Subsidiary and Interest-Royalties Directives within scope.

Where does Belgium sit in the EU cohort?

Belgium anchors the EU civil-law founding member cohort alongside France, Germany, Italy, Spain, and Luxembourg. It shares the same structural EU VAT framework, ATAD-compliant CFC rules, and MLI ratification with these peers.

Common penalties and pitfalls

Foreign nationals and cross-border workers run into a handful of recurring traps in Belgium's system.

When should you talk to a Belgian Tax-Adviser?

Some Belgian returns are straightforward. Others involve complexity that benefits from a credentialed ITAA-registered Conseil fiscal / Belastingadviseur.

• Your worldwide income lands in the 45 or 50 percent federal bracket — commune surcharge compounds materially at these rates
• You arrived in Belgium in the last 3 months and may qualify for the RSII inbound-specialist regime (application deadlines are strict)
• You have cross-border income from a treaty country and need to determine whether Belgium's exemption-with-progression or credit method applies
• You hold cryptoassets with significant unrealised gains and want an SDA advance ruling on normal-management vs speculative characterisation
• Your company is approaching or exceeds the EUR 750 million Pillar Two threshold
• Your SME structure may lose the 20 percent reduced-Isoc rate due to group changes or revenue growth
• You received an SPF Finances avis de cotisation / aanslagbiljet (assessment notice) or an audit query
• You are claiming the Innovation Income Deduction for IP income and need qualification review

You can find vetted Belgian practitioners through the directory below.

This page is general information. It is not personal guidance for your specific situation. Tax rules change. Always check current figures on the SPF Finances website or with a licensed Belgian practitioner before filing.