Income tax in Belgium 2026: rates from 25% to 50%, domicile and seat of wealth

Who Belgian income tax reaches starts with article 2, paragraph 1, 1° of the 1992 Income Tax Code, as the Belgian authority summarised it in the sheet it gave the OECD. Inhabitants of the Kingdom are people whose domicile or seat of wealth is located in Belgium. Domicile describes a factual situation: actual residence or living quarters in the country. The seat of wealth is the place from which the assets concerned are managed. Unless evidence to the contrary is provided, everyone listed in the National Register of Individuals is considered an inhabitant, and a temporary absence does not imply a change of domicile. The sheet, dated 2015 in its metadata, contains no day threshold at all. So this page's counter gives no verdict: it collects your dates, which can serve as factual evidence, and leaves the decision where it belongs, with the authority. The amount of tax is a separate matter, and for that the Belgian Official Gazette gives the bands below.

Belgian income tax rates on 2026 income

2026 income, tax year 2027: indexed bands published in the Belgian Official Gazette on 12 August 2026, rates from article 130 of the Income Tax Code. Basic tax, before the €11,550 tax-free amount and without municipal surcharges, which we have not read.

Belgium names its years by the assessment that follows: tax year 2027, the "exercice d'imposition", covers income of 2026. The bands in the table come from the indexation notice published on 12 August 2026, which turns the Code's base amounts of €8,120, €14,330 and €24,800 into €16,720, €29,510 and €51,070. The notice gives amounts, not rates. The four rates come from article 130 as rewritten by the Act of 26 December 2015, published on 30 December 2015, on those same three base amounts: 25%, 40%, 45% and 50%.

The tax-free amount comes off afterwards, and as a tax rather than as income. The basic amount for tax year 2027 is €11,550, indexed from a base raised to €4,945 by the reform Act of 15 July 2026. Under article 134 the tax on that amount has its own scale, 25% on the first €11,750 in the 2027 notice, so a basic amount of €11,550 is worth €2,888. For a single person with taxable income of €40,000 and nothing else to adjust, that gives €14,017 of basic tax, less €2,888, or €11,129. This is our arithmetic on those texts, not an official simulation: it leaves out municipal surcharges, children and other dependants, and every reduction or credit.

That is the path written into article 2 of the 2026 Act. It also lets the King adjust the amount so that it comes to €14,450 for tax year 2030 and €15,600 for 2031 after indexation. The bands themselves did not appear among the changes we read in that Act. Its article 10 does repeal the special scale of article 134, from tax year 2030, so that the tax on the tax-free amount then follows the same rates as the basic tax, as the Chamber's bill explains.

What we read about Belgian tax, and what is still missing

The question of how much you will pay in full has only a partial answer on this page. The scale gives the State's basic tax, but municipal surcharges come on top in a way we have not read, so no total rate is stated here. Nor does what we read say what an inhabitant pays on foreign income, or how a non-inhabitant is taxed, and we leave those points aside until we have read them. The residence sheet points to the Federal Public Service's Tax Survey publication for detail on personal income tax. That address sits on the same domain as the rates page, and we did not consult it.

The table below keeps what we read apart from what we did not.

Why a home or a portfolio weighs more than a calendar

There are two criteria, and either one is enough. The first looks at where you actually live: the sheet's word is "actual", not the address on your post. The second looks at where your assets are managed from. Nothing in the sheet says you must spend time there. Someone who runs their wealth from Belgium can therefore fall within this criterion, and a low day total gives no shelter, though the text does not explain how such management is established. We take no side on cases the sheet does not address.

The national register presumption

Being in the National Register does not settle residence for good: it shifts the burden of proof. If you are listed, you are considered an inhabitant, and it falls to you to show otherwise. For anyone leaving the country this is the clearest practical consequence, since going without dealing with it leaves the presumption standing. The TIN sheet adds that an individual's tax number is the national number, given on registration, made up of eleven digits and unique to each registered person.

Going away for a while is not enough

One short sentence in the sheet matters a great deal for expatriates and long stays: a temporary absence from the country does not imply a change of domicile. It does not say how long temporary lasts, nor when an absence stops being temporary. A year on assignment abroad with a home still available in Liège, say, is not settled by counting. It is a question of facts to be documented, and the texts we read give no duration for it.

What the counter does when Belgium sets no number

A counter with a verdict would be a lie here. This one adds up your days in the chosen year and shows the total, with a note that it gives no residence result. That total still helps in three situations: showing that a stay really was temporary, setting your time in Belgium against your time elsewhere, and checking whether you have crossed the threshold of the country you are moving to. Some neighbours do count. The same 200-day stay, in one country and starting on 1 January, gives this in our engine:

Of these five rows, only Germany has a stated duration in its rule, and even that is a continuous stay of more than six months. France, Luxembourg and the Netherlands turn on other facts, as Belgium does. A life split between Brussels, Lille and Luxembourg City does not come down to arithmetic.

Cross-border lives and dual residence with France

When two states both treat you as resident, the treaty decides. The France-Belgium treaty of 10 March 1964, in the version published on impots.gouv.fr, works in steps in its article 1: first the permanent home; if there are two, the centre of vital interests, meaning the state with which personal and economic relations are closer; then habitual abode; then nationality; and last, mutual agreement between the authorities. Check which version applies to your year on the French authority's site, as we have not looked into the status of any later text. For other countries, each treaty has its own wording and has to be read separately. Our page on dual residence sets out the tie-breaker tree.

Papers worth keeping in the meantime

With no threshold, proof gets built up over time. Keep whatever shows where you actually live (lease, bills, school records), whatever shows where your assets are managed from, and the record of your registration or deregistration in the National Register. Add your travel dates: that is what this counter is for, and the Taxlag app keeps that record if you would rather have it done as the year goes on. To compare with countries that do set a figure, open the country table or the overview of tax residency. A real situation deserves an answer from the authority or a professional, since this site replaces neither.