Belgian Inheritance Tax 2026 — Regional Guide

TL;DR — Five Key Numbers

• Spouse / cohabitant on family home: fully exempt in all three regions (Flanders, Wallonia, Brussels).
• Direct line (children) starting rate: 3% in Flanders and Wallonia, 3% in Brussels-Capital — top marginal rates of 27% (Flanders), 30% (Wallonia/Brussels) on the highest band.
• Top rate for unrelated heirs: 55% in Flanders, 65% in Brussels-Capital (the highest in the EU), 80% historic peak in older Wallonia tables now capped at 65–80%.
• Filing deadline: 4 months from death if the deceased died in Belgium (5 months EEA, 6 months elsewhere).
• Family home exemption: 100% for the surviving spouse / legal cohabitant on the principal residence in all three regions.

Belgian inheritance tax (droits de succession in French, erfbelasting in Dutch) is a regional tax. The relevant region is the one where the deceased had their main fiscal residence for the longest period of the last 5 years. Each region — Flanders, Wallonia and Brussels-Capital — sets its own rates, brackets and reliefs.

Legal Framework

The historic federal Code des droits de succession dates from 1936 but was largely regionalised in 2002 under the Lambermont Accords. Since then:

• Flemish Region applies the Vlaamse Codex Fiscaliteit (VCF), administered by VLABEL (Vlaamse Belastingdienst). The last major reform was effective 1 September 2018, with significant cuts for siblings, cousins and unrelated heirs.
• Walloon Region applies the federal Code des droits de succession with regional amendments, administered by SPW Fiscalité. The 2018 reform reduced some sibling rates.
• Brussels-Capital Region applies its own version of the federal code with regional amendments, administered by Bruxelles Fiscalité. Brussels generally has the steepest rates.

The deceased's region is determined by where they maintained their main fiscal residence longest during the 5 years preceding death — preventing late-life moves to the lowest-tax region purely for inheritance planning.

The tax is charged on each heir individually based on what they receive after allowances.

Heir Classes Table (2026)

The regions use broadly similar class structures but different rates and brackets. Summary of starting/top rates per region:

Within each region, the rate is progressive across brackets that broadly start at €12,500–€50,000 and rise to bands above €500,000. Brussels tends to push the top bracket through fastest.

Allowances and Specific Reliefs

Family home exemption (woning gezinswoning / habitation familiale): in all three regions, the principal residence passes to the surviving spouse or legal cohabitant fully exempt from inheritance tax, regardless of value. Children do not enjoy this exemption — they pay normal direct-line rates on their share of the family home.

Flanders — direct-line exemption for first €50,000 movable assets: in Flanders, the first €50,000 of movable assets received by each child or spouse is taxed at 0%, before the 3% bracket begins. This was introduced by the 2018 reform.

Wallonia — first €12,500 in direct line at 3%: Wallonia maintains a low starting bracket but does not offer the Flemish €50,000 zero-band.

Brussels-Capital — direct-line exemption for first €15,000: Brussels exempts the first €15,000 of any direct-line heir's share.

Family business relief: all three regions provide significantly reduced rates (typically 0% on qualifying family business shares in Flanders, 3-7% in Wallonia and Brussels) subject to continuity conditions (e.g., maintaining employment and activity for 3–5 years).

Charitable bequests: reduced rates of 8.5% (Flanders), 7% (Brussels), 7-25% (Wallonia depending on charity type).

Spouse choice — usufruct on family home + outright on rest: Belgian succession law gives the surviving spouse a usufruct over the children's share by default, optimising both inheritance tax and family liquidity.

Rates by Region — Direct Line (Children, Spouse on Non-Home Assets)

Flanders (2026):

Wallonia (2026):

Brussels-Capital (2026):

The structural difference: Flanders has fewer, larger brackets and a lower top rate; Brussels and Wallonia have more granular bracketing and a higher top rate.

Filing Process and Deadlines

Heirs (and the notary if involved) must file a déclaration de succession / aangifte van nalatenschap with the competent regional tax authority within:

• 4 months if the deceased died in Belgium,
• 5 months if the deceased died elsewhere in the European Economic Area,
• 6 months if the deceased died outside the EEA.

The declaration lists all worldwide assets (for Belgian residents) and Belgian-situated assets (for non-residents), liabilities, and beneficiaries. The regional administration issues an assessment within typically 6–12 months. Payment is due within 2 months of the assessment notice, though extensions and instalments are routinely granted.

Late filing penalty: typically 25-50% surcharge depending on the region and degree of delay; criminal sanctions apply for deliberate non-disclosure.

Late payment interest: statutory rate (4–5% in 2026) accrues from the legal payment deadline.

Payment plans: all three regions offer instalments and deferrals (sometimes up to 5 years) for illiquid estates, real estate-heavy estates or family-business successions.

Specific Reliefs

Family business (familieonderneming / entreprise familiale):

• Flanders: 0% on transfers of qualifying family-business shares meeting continuity criteria.
• Wallonia: 0% on shares of qualifying family businesses on death.
• Brussels: 3% reduced rate for qualifying family businesses.

In each case the heir must maintain activity, employment and capital for typically 3 years post-transfer.

Forest and agricultural land: all three regions offer significant reductions (often 50–75%) for working farmland and certified forest, subject to continuation of agricultural/forestry use.

Life insurance: in Belgium, group-A life insurance contracts where the deceased was the insured and the policyholder are taxed as inheritance to the named beneficiary at the appropriate class rate. Properly structured ABC arrangements (different policyholder/insured/beneficiary) can sit outside the estate.

Gifts in the last 3 years: under federal rules implemented in all three regions, gifts made in the 3 years before death that were not formally registered and taxed are reintegrated into the estate. Registered gifts (taxed at 3–7% direct line, 7–10% other) are not reintegrated, making registered lifetime giving a major Belgian planning tool.

Duo-legaten (until 2021 in Flanders, still partial elsewhere): historic technique combining a charitable bequest with a private bequest such that the charity pays the private heir's tax. Flanders abolished the technique in 2021; Wallonia and Brussels retain modified versions.

Worked Example: €500,000 Estate to Spouse and Two Children (Flanders)

A Flemish resident dies in 2026 leaving a net estate of €500,000: family home €300,000, financial assets €200,000. The will distributes equally.

Spouse share — usufruct over the home + 1/3 of movable assets:

• Usufruct of family home: 100% exempt (familiehuis).
• Usufruct of movables (capitalised value depending on spouse age, say age 70 → coefficient ~0.32 × €200,000 × 1/3 share = ~€21,300 imputed value).
• Within Flemish direct-line €50,000 movable zero-band → erfbelasting €0.

Each child — bare ownership of half the home + 1/3 movables:

• Bare ownership of half the home: capitalised value depends on the spouse's age; for a spouse aged 70, bare ownership coefficient ~0.68, so bare ownership value of half the home = €300,000 × 0.5 × 0.68 = €102,000.
• Movable share: €200,000 × 1/3 × bare ownership coefficient (varies with usufruct holder's age) ~ €45,300.
• Child's total taxable share: ~€147,300.
• Flemish direct-line: first €50,000 at 3% = €1,500; next €97,300 at 9% = €8,757.
• Erfbelasting per child ≈ €10,257.

Total estate tax: roughly €20,500 across both children. The spouse pays nothing thanks to the family-home exemption and the €50,000 movable zero-band.

In Brussels-Capital the same configuration produces approximately €23,500 total because Brussels lacks the Flemish €50,000 movable zero-band. In Wallonia the figure lands around €24,000 with the more granular bracketing.

Cross-Border Angle

Deceased resident abroad with Belgian assets. A non-resident dying with Belgian-situated assets (a Belgian holiday home, Belgian financial account) is subject to the droits de mutation par décès on Belgian real estate only — financial assets of non-residents are generally outside the Belgian net. The applicable region is the region where the Belgian real estate is situated.

Belgian deceased with foreign assets. A Belgian resident is taxed in Belgium on worldwide assets. Unilateral foreign tax credit under article 17 of the federal code (applied through the regions) offsets foreign inheritance tax actually paid on assets situated abroad, capped at the Belgian tax that would have been due on those assets.

Double-tax treaties on inheritance: Belgium has inheritance-tax treaties with France and Sweden. For other countries (including the Netherlands, Germany, Luxembourg, the UK, Poland) only unilateral relief applies — and credits may not fully eliminate double taxation, particularly for non-direct heirs.

Polish Reader Angle

A Polish heir of a Belgian-resident deceased faces a layered analysis:

1. EU Regulation 650/2012 (Brussels IV) determines the applicable succession law — default is the law of the deceased's habitual residence (Belgian). The deceased could have chosen Polish nationality law in the will. Brussels IV does not affect tax.
2. Belgian regional inheritance tax applies to the worldwide estate of a Belgian-resident deceased. The relevant region is determined by the deceased's last-5-year residence pattern.
3. Polish inheritance tax (podatek od spadków i darowizn) applies to the Polish heir on the worldwide inheritance received. Rates 0–20% by class, with Group 0 (spouse, descendants, ascendants, siblings) fully exempt provided SD-Z2 is filed within 6 months of accepting the inheritance.

For a Polish child of a Belgian deceased, the Belgian tax in Flanders can be 3–27% on the direct-line share, while Polish tax is €0 (Group 0 with timely SD-Z2). For a Polish nephew of a Belgian aunt, the Belgian tax could be 25–55% (Flanders) or 35–70% (Brussels), with a further Polish tax of 7–20% (Group III) — and no PL–BE bilateral inheritance treaty exists, so real double taxation can arise.

The practical sequence: file the Belgian declaration within 4 months; obtain the Belgian assessment; file SD-3 (or SD-Z2 for Group 0) in Poland claiming any available unilateral relief in PL for tax already paid abroad.

Estate & net worth planning sidebar: Belgian residents with cross-border family — Polish heirs, French property, Dutch holiday home — face a region-by-region puzzle. Freenance's Financial Freedom Runway models the impact of an inheritance on your timeline to financial independence, including regional Belgian inheritance taxes, foreign property values and Polish heir liabilities. Useful for planning lifetime gifts (registered at 3–7%) versus deferring to inheritance (potentially 27–55%).

FAQ

Why does the Belgian region matter? Each of the three regions (Flanders, Wallonia, Brussels-Capital) sets its own rates and reliefs. The applicable region is determined by where the deceased had their main fiscal residence longest during the last 5 years — meaning a recent move just before death may not change the applicable region.

Is the family home really fully exempt for the spouse? Yes, in all three regions the principal residence passes to the surviving spouse or legal cohabitant fully exempt from inheritance tax, regardless of value. This is one of the most generous family-home reliefs in the EU.

What is the difference between gifts and inheritance for tax purposes in Belgium? Registered gifts in direct line pay 3% (Flanders/Wallonia) or 3–7% (Brussels). Inheritance can reach 27–30% in direct line at the top brackets. This makes lifetime gifting a major Belgian planning lever, provided the gift is registered (taxed) and not pulled back into the estate by the 3-year rule.

Why are sibling and unrelated rates so much higher than direct line? Belgium maintains a sharp distinction between direct line (3–30%) and others (25–80%). The 2018 Flemish reform cut the top sibling rate from 65% to 55% and unrelated rates accordingly, but other-region rates remain among the steepest in the EU.

Can a Polish heir avoid double taxation between Belgium and Poland? No Belgian-Polish inheritance tax treaty exists. Unilateral relief is available in both countries, but in non-Group-0 cases real exposure remains. Polish Group 0 heirs (spouse, children, parents, siblings) are exempt domestically if SD-Z2 is filed within 6 months.

What happens to a Belgian holiday home held by a Polish family? On the Polish owner's death, no Belgian inheritance tax applies (Polish-resident deceased, no Belgian situs except the home itself — and Belgium taxes non-residents only on Belgian real estate). Belgian droits de mutation par décès apply to the home transfer at the applicable regional rate. Polish heirs handle Polish succession of the foreign asset under PL inheritance tax rules.

Informational content, not legal/tax advice. Inheritance law is complex — consult a notary or tax advisor.

A Note on Choosing the Region

Because Belgium's inheritance tax is regional, families occasionally consider relocating between Flanders, Wallonia and Brussels-Capital to optimise the eventual rate. The 5-year residency test deliberately constrains last-minute moves — the relevant region is the one where the deceased had their main fiscal residence longest during the 5 years preceding death. Relocation more than 5 years before death is therefore a planning lever; relocation in the last year of life rarely is. The notarial profession routinely flags this pattern in succession-planning consultations.

Sources

• VLABEL (Vlaamse Belastingdienst) — erfbelasting guidance, Vlaamse Codex Fiscaliteit
• SPW Fiscalité — droits de succession en Wallonie
• Bruxelles Fiscalité — droits de succession dans la Région de Bruxelles-Capitale
• Federal Public Service Finance — Code des droits de succession (1936, regionalised 2002)
• Fédération Royale du Notariat Belge / Koninklijke Federatie van het Belgisch Notariaat — succession practice handbook