Financial Planning Guide: Belgium for British Expats and International Investors

Belgium sits at the heart of Europe — geographically, economically, and politically. As the home of the EU institutions, NATO headquarters, and a significant multinational corporate base, Brussels draws a large population of internationally mobile professionals and executives. Belgium has three official languages (French, Dutch, and German), excellent transport links, and a well-developed private school network. Financially, it presents one of Europe's most interesting — and sometimes underestimated — planning landscapes: very high income tax rates have long coexisted with the absence of capital gains tax for private investors (though a new 10% solidarity contribution on financial-asset gains applies from 1 January 2026), and a specific expat regime provides a meaningful benefit for qualifying employees.

Belgian Tax Residency

Belgian tax residency is established when you register with the local commune (gemeentehuis or maison communale), which triggers automatic registration with the Belgian Federal Public Service Finance. Registration in a Belgian municipal register creates a presumption of Belgian residence. The presumption is rebuttable, but the bar is high: the Belgian tax authorities take a substance-over-form approach and will look at where family life is centred, where minor children live and attend school, and where the individual's economic activities are actually managed. Residency is equally imputed on a facts-and-circumstances basis if Belgium is the centre of your personal and financial interests, even without formal registration.

Belgian residents are taxed on worldwide income; non-residents pay Belgian tax only on Belgian-source income. Belgium has an extensive network of double tax treaties (over 100 in force) that governs how foreign income is taxed and prevents double taxation in most cases.

Belgian Income Tax: IRPP/IPP

Belgian income tax on individuals (impôt des personnes physiques / personenbelasting) is progressive. The thresholds are indexed annually for inflation; on the current indexed scale:

• €0–€16,720: 25%
• €16,720–€29,510: 40%
• €29,510–€51,070: 45%
• Above €51,070: 50%

A tax-free allowance — currently around €11,180, increased for dependent children — applies before these bands.

These are among the highest marginal income tax rates in Europe. Municipal surtaxes (opcentiemen / centimes additionnels) are levied by each commune at rates that vary but typically add a further 6–9% to the federal tax liability; the Brussels communes are among the higher-rated. In practice the effective top marginal rate reaches approximately 53–55% for employment income in cities such as Brussels or Ghent.

Social security contributions are levied separately, at rates that differ between employed, self-employed, and company director status, and both the employee and employer shares are substantial. The total tax-on-labour burden in Belgium is consistently ranked among the highest in the OECD.

The New Expat Regime (2022 Onwards)

Belgium's expat tax regime was substantially reformed in 2022, replacing the former system that had been in operation for several decades with stricter qualification criteria but a cleaner, more transparent framework.

The new regime in outline: qualifying internationally mobile employees can receive a tax-free lump sum equal to the lower of:

• €90,000 per year, or
• 30% of gross remuneration

This amount is treated as a non-taxable reimbursement of recurring extraterritorial costs (housing abroad, cost-of-living differential, travel to and from the home country). For a highly paid executive earning €250,000 gross, the tax-free allowance is capped at €90,000 — saving approximately €45,000–€50,000 in income tax and social charges compared with full Belgian taxation.

Qualification requirements:

• Recruited directly from abroad, or transferred by an international group to a Belgian entity
• Not Belgian tax resident in the five years immediately preceding employment in Belgium
• Not Belgian social security-insured in the ten years preceding employment
• Gross annual remuneration of at least €75,000 (excluding the expat allowance itself)

Duration: five years initially; extendable to a maximum of eight years on application.

Administration: the regime is employer-administered. The employer must file a request within three months of the employee's start date. Self-employed individuals and company directors are not eligible — the regime applies only to employees in a traditional employment relationship.

Unlike the Netherlands' 30% ruling, the Belgian new expat regime does not provide for partial non-resident taxpayer status on investment income. Belgian tax residents under the expat regime are taxed on worldwide investment income in the same way as other Belgian residents, subject to double tax treaty protections.

Residency and Visa Routes for Non-EU Nationals

Belgium does not operate a formal investment or wealth-based visa programme. There is no Belgian equivalent of the Portuguese or Maltese golden visa, and no route that converts capital into residence. EU and EEA nationals have freedom of movement; third-country nationals — including UK nationals post-Brexit — must apply for a long-stay visa under a category appropriate to their circumstances: employment, self-employment, family reunification, or retirement on independent means.

For non-EU HNW individuals without an employment nexus to Belgium, the practical pathway is usually a self-employment or entrepreneur visa, or a multinational intra-company transfer. The professional card process involves the relevant regional authority rather than a single federal body — VDAB/RVoA in Flanders, ACTIRIS in Brussels, FOREM in Wallonia — which means the answer to "what do I need to file" depends on which region you intend to live in.

After five years of legal residence, a long-term EU residence permit can be obtained; naturalisation is possible after a further qualifying period.

Capital Gains Tax in Belgium: A Long-Standing Advantage, Now Narrowed

For decades, Belgium's most distinctive tax feature for investors was the absence of any capital gains tax on private investment portfolios. A Belgian resident who held shares, bonds, investment funds, or other securities as part of their personal wealth — and who was not operating as a professional trader — paid no Belgian tax when selling those assets at a profit, regardless of the size of the gain.

That position has changed. From 1 January 2026, Belgium introduced a new 10% "solidarity contribution" on capital gains realised by private individuals on financial assets. Crucially, the charge applies only to gains that accrue from 1 January 2026 onwards (there is no retroactive taxation of earlier growth; for assets held before that date a 31 December 2025 reference value can generally be used), and an annual exemption of around €10,000 (indexed) is available, with unused allowance partly carried forward. Even so, the headline "no CGT" advantage no longer holds in full, and the impact on a planned large disposal should be modelled carefully.

The 10% rate still compares favourably with the UK (CGT of 18–24% on investment gains), France (flat tax of 30%), and Germany (Abgeltungsteuer of approximately 26.4%).

Important caveats:

• Professional investor risk: the Belgian tax authorities can reclassify an investor as a professional if their investment activity resembles a business — through high frequency, leverage, use of credit, or scale that implies professional intent. Gains from professional activity are taxed as professional income at up to ~55%. This is a genuine risk for highly active traders and should be managed carefully through appropriate documentation of investment rationale and strategy.
• Speculative gains: separately from professional reclassification, gains falling outside the normal management of private wealth because the transaction is deemed speculative continue to be taxed as miscellaneous income at 33%, exactly as they were before the 2026 reform. (The standalone "Speculatiebelasting" on listed shares sold within six months, introduced in 2016, was abolished with effect from 1 January 2017 and does not apply.) The interaction between the new 10% charge and the speculative-income rules is genuinely complex; anyone with a material portfolio should take Belgian advice on the treatment of a planned disposal before executing it.
• Belgian real estate: gains on the disposal of Belgian property held for less than five years are subject to tax (12.5% for property held under 5 years). Property held for longer is generally exempt for private individuals.

Dividend and Interest Withholding Tax

Dividends and interest received by Belgian residents are subject to a 30% withholding tax (précompte mobilier / roerende voorheffing), which is generally final — no additional income tax is due on those amounts and there is no top-up assessment.

Belgian paying agents withhold automatically. For foreign-source dividends and interest, however, the taxpayer must self-declare, and credit for foreign withholding tax is available only under the relevant treaty. This is the most common compliance failure among newly arrived residents who keep an offshore brokerage account: the income is not reported by a Belgian agent, so nothing happens automatically, and the obligation is entirely the taxpayer's.

A dividend received deduction (the DBI/RDT regime) is available to qualifying corporate investors holding significant stakes, but it does nothing for individual private investors.

The Kaaimantaks: Belgium's Look-Through Tax on Offshore Structures

The Kaaimantaks — named colloquially after the caiman, in reference to offshore jurisdictions — is Belgium's statutory look-through regime, and it is the single most important item on this page for anyone arriving with an existing wealth structure. Introduced in 2015 and significantly expanded since, it treats Belgian residents as if they had directly received the income earned inside certain non-Belgian legal structures.

Structures caught include trusts, private foundations, and companies located in jurisdictions with an effective income tax rate below 15% or appearing on Belgian blacklists.

How it bites: undistributed income inside a caught structure is taxed in the Belgian resident's hands as though it had been distributed. Actual distributions are then taxed as dividends, at 30%. There is no deferral to hide behind, and the fact that a structure was established lawfully years before any connection to Belgium is irrelevant to whether it is caught.

For HNW individuals who have historically used offshore trusts, foundations, or holding companies, a Kaaimantaks analysis must be performed before Belgian residency is established. Existing structures may need to be restructured or unwound prior to arrival — which is a very different exercise, and a very different cost, once you are already resident.

Note that Belgian law does not recognise the trust as a domestic concept at all, which compounds the problem: a structure can be both ineffective for Belgian succession purposes and fully transparent for Belgian income tax purposes at the same time.

The Securities Account Tax

Belgium has no general wealth tax, but it does levy an annual tax of 0.15% on the value of taxable financial instruments held in securities accounts where the average value exceeds €1 million over the assessment year.

• It applies to Belgian residents' accounts held both in Belgium and abroad, and to non-residents' accounts held in Belgium.
• Listed shares, bonds and investment funds are in scope. Certain instruments — notably non-listed shares and cash — are excluded.
• Belgian financial institutions calculate and withhold it on Belgian-held accounts. Self-reporting is required for foreign accounts, and this is where internationally mobile clients most often fall foul of it.

At 0.15% the tax is not, by itself, a reason to avoid Belgium. Missing the self-reporting obligation on an offshore account is a different matter.

UK Pensions in Belgium

Under the UK-Belgium Double Tax Treaty, private and occupational UK pension income is taxed in Belgium (the state of residence). The treaty does not provide for the lump sum exemptions available in some other countries. Key practical steps:

• Apply for an HMRC NT code to prevent UK withholding at source.
• Belgian income tax applies at IRPP rates on the full pension income received.
• The rente (pension) income deduction reduces the effective rate for many pensioners.
• UK government and civil service pensions remain UK-taxable under the treaty's government service article.

The Belgian statutory pension (rustpensioen / pension de retraite) accrues through social security contributions during Belgian employment, on the basis of contribution years. Self-employed individuals and company directors contribute through a separate scheme with its own accrual rules. Expats on shorter assignments may not accumulate meaningful Belgian state pension entitlement either way.

Separately, UK State Pension entitlement continues to accrue on the basis of your National Insurance record, and voluntary contributions (Class 2 or Class 3, depending on your circumstances) should be maintained while abroad. For most expats this is the cheapest pension money they will ever buy, and it is routinely overlooked in the year of departure.

The UK–Belgium Double Taxation Agreement

The UK–Belgium DTA (1987, as amended) covers the income taxes of both states. The provisions that matter most in practice:

• Dividends: 10% withholding; 5% for corporate beneficial owners holding 10% or more of the capital
• Interest: 15% withholding, reduced to 10% in certain cases
• Royalties: 0% withholding
• Capital gains: generally taxed on a residence basis, with the usual exception for immovable property, which is taxed where the property sits
• Pensions: private and occupational pensions taxed in the state of residence; government service pensions remain UK-taxable

Belgian Property

Belgium has a stable residential property market with strong owner-occupancy rates, particularly in Flanders. For internationally mobile clients, Brussels offers a deep rental market and high-quality housing stock.

Purchase costs for residential property vary by region:

• Flanders: registration duty of 3% for a primary residence meeting certain conditions; 12% for second homes and investment property
• Wallonia and Brussels: 12.5% for most residential purchases (reductions available for primary residence meeting conditions)

Notary fees add approximately 1–1.5% of the purchase price. Total acquisition costs are significant and should be factored into investment return calculations.

Property taxation: ongoing Belgian property is subject to the précompte immobilier (property tax), assessed on a notional cadastral income. There is no annual wealth tax on property.

Banking in Belgium

Belgium's major retail banks are BNP Paribas Fortis (the former Fortis), KBC, Belfius, and ING Belgium. The private banking sector is genuinely active for a country of Belgium's size: BNP Paribas Wealth Management, Degroof Petercam, and Delen Private Bank are the principal domestic institutions, with the international players well represented alongside them.

Belgium participates in the EU deposit guarantee scheme (€100,000 per institution). Belgian banks comply with CRS and FATCA and report foreign account information to the relevant authorities as a matter of course — which, combined with the self-reporting obligations on foreign-source investment income and the securities account tax, means an offshore account held by a Belgian resident is visible whether or not it is declared.

Most internationally mobile clients run a Belgian account for day-to-day life alongside existing offshore banking and investment relationships, rather than repatriating everything on arrival.

Belgian Inheritance Tax: A Serious Planning Consideration

There is no federal inheritance tax in Belgium at all. Succession duty is levied purely at the regional level by the three regions — Brussels Capital, Flanders, and Wallonia — each with its own rate schedule, and the rates differ meaningfully between them. Which schedule applies depends on the region of residence at death, which makes the choice of commune a live planning variable rather than a lifestyle one. For clients resident in Brussels or Wallonia:

Between spouses / direct descendants in Brussels (indicative):

• 3% on the first tranche; rising to 30% on amounts above €500,000

Between unrelated individuals in Brussels:

• Rates rise to 80% for amounts above €75,000

Flemish rates are broadly similar for direct-line transfers but have been subject to progressive reform; the Flemish government has made reducing inheritance tax a policy priority.

Belgian inheritance tax applies to the worldwide assets of Belgian-resident deceased persons, and also to Belgian immoveable property for non-residents. This is a significant planning consideration for clients with Belgian real estate or who establish long-term Belgian residency. Trusts are not recognised under Belgian law and may be subject to adverse tax treatment — specialist advice on estate structuring is essential.

Lifetime Gifts

There is no federal gift tax either, but the regions levy gift tax on real property. Cash and other moveable assets can be donated to children or grandchildren free of gift tax under certain conditions, and in particular where the donation is made three or more years before death — a gift made inside that window is pulled back into the estate. Regional rules and the exact look-back period vary, so the planning has to be done against the rules of the region you will actually die resident in, not the one you happen to live in when you make the gift.

Living in Belgium: Practical Observations

Brussels hosts the largest concentration of EU civil servants, international diplomats, and NGO workers in Europe, and NATO's headquarters adds a further multinational layer. The result is a large, genuinely cosmopolitan English-speaking community — Belgium is one of the few countries in continental Europe where an arriving expat can function professionally in English from day one.

Schooling is a strength. The Belgian state system is high quality; the European School network in Brussels is available to children of EU institution employees, and international private schools serve the broader expat community. Property: Ixelles and Uccle in Brussels are the traditional choices for senior expatriates, with Woluwe-Saint-Pierre offering a quieter suburban alternative with good school proximity.

Healthcare — social security funded, accessed by registering with a mutualist fund (mutualiteit / mutualité) — is consistently rated among Europe's best. Cost of living is moderate by Western European capital standards, and materially below London, Paris, or Zurich for comparable housing.

Practical Steps for Belgium-Bound Clients

• Run a Kaaimantaks analysis on every existing offshore structure before you become resident. This is the step that is expensive to fix afterwards and cheap to fix beforehand.
• Document investment strategy and holding rationale to support private investor status and mitigate professional investor reclassification risk.
• Engage employers to apply for the new expat regime within three months of the start date.
• Apply for an HMRC NT code for UK pension income, and check whether voluntary Class 2 or Class 3 National Insurance contributions should continue.
• Commission Belgian estate planning advice before establishing long-term residency — the inheritance tax rates and absence of trust recognition make early planning critical, and the applicable rates depend on the region.
• Model property acquisition costs carefully — the 12.5% registration duty in Brussels and Wallonia substantially affects investment returns.
• Maintain offshore banking and investment relationships alongside Belgian day-to-day banking — but diarise the self-reporting obligations that come with them, on both foreign investment income and the securities account tax.

This guide reflects the position as of mid-2026 and should not be treated as tax advice. Belgian tax law is complex and subject to regional variation. The value of investments can fall as well as rise. Seek qualified professional advice before making decisions.

How Global Investments can help

Global Investments supports internationally mobile clients considering Belgium with pre-arrival financial structuring, pension planning, and cross-border estate strategy. We work alongside Belgian tax specialists to assess the Kaaimantaks implications of any existing offshore trust, foundation or holding company before you arrive, to ensure the capital gains position (including the new 2026 solidarity contribution) is managed correctly, to see that the new expat regime is claimed efficiently, and to get inheritance planning structures in place before long-term residency is established. Contact us to arrange an initial consultation.