paycalc·euEU salary & tax calculators · 2026

Belgium net salary calculator 2026

Work out your take-home pay in Belgium for income year 2026. The calculator deducts employee ONSS/RSZ social security (13.07% of gross, no ceiling), the standard 30% professional-expenses deduction (capped at €6,070), then federal income tax (IPP/PB) at 25%/40%/45%/50% less the tax-free allowance, plus a municipal surcharge (a representative 7%). Single taxpayer, no dependants.

Single taxpayer, no dependants. Municipal surcharge set to a representative 7% (varies 0–9% by commune). Werkbonus and the special social contribution are not modelled.

Net / year€28,161.75from €40,000.00 gross
Gross salary€40,000.00
Income tax (federal IPP)-€6,177.80
Municipal surcharge-€432.45
Net pay (take-home)€28,161.75

Effective deduction rate 29.6 % · of which income tax 16.5 %

Dataset last reviewed 2026-07-18 · tax year 2026 · 22 documented values⚠️ Informational estimate, not tax advice. Payroll software may differ in edge cases. Verify with a professional.

How this is calculated

  1. Deduct employee social security (ONSS/RSZ) at 13.07% of gross salary — Belgium applies no earnings ceiling to employee contributions.
  2. Subtract the standard professional-expenses deduction: 30% of your income net of ONSS, capped at €6,070 for 2026 (the cap applies above roughly €23,300 gross).
  3. Apply federal income tax (IPP/PB) marginally: 25% up to €16,720, 40% to €29,510, 45% to €51,070, then 50% above, on the taxable income.
  4. Subtract the tax-free allowance credit — the tax that would fall on the exempt amount (€11,180 for a single person, at the lowest bracket rate = €2,795) is deducted from the federal tax.
  5. Add the municipal surcharge (opcentiemen / taxe communale additionnelle), a percentage of the federal tax set by each commune (0–9%; this calculator uses a representative 7%). Take-home pay = gross − ONSS − federal tax − surcharge.

FAQ

Why is the municipal surcharge only an estimate?

Every Belgian commune sets its own surcharge on the federal income tax, from 0% (a few communes) up to about 9%. The national average is around 7%, which this calculator uses as a default. Your exact figure depends on where you are domiciled on 1 January of the assessment year.

What is the professional-expenses deduction?

Employees automatically deduct a lump-sum for work expenses — 30% of income after ONSS, capped at €6,070 in 2026 — without needing receipts. If your real, documented expenses are higher, you can deduct those instead, but that is uncommon.

Is the werkbonus included?

No. The werkbonus (bonus à l'emploi) is a reduction of employee social contributions for lower wages, which increases net pay below roughly €3,300/month. This v1 calculator omits it, so for lower salaries your actual net may be slightly higher than shown.

How does the tax-free allowance work?

The first €11,180 of income (for a single person, 2026) is exempt. In practice the exemption is applied by computing the tax on that amount at the lowest bracket (€2,795) and subtracting it from your total federal tax — so it acts as a tax credit rather than reducing your taxable income directly.

Sources and verification

Dataset last reviewed 2026-07-18 · tax year 2026 · 22 documented values

Rates and thresholds use official primary sources where available, reputable secondary sources when primary access is unavailable, and clearly labelled derived formulas. Each value retains its verification status.

8 sources
  • SPF Finances — IPP bracket 1 upper €16,720 (income year 2026)
  • SPF Finances — Standard professional-expenses deduction 30% of income net of ONSS
  • PayCalcEU editorial default, informed by SPF Finances' 2026 per-commune rate table (derived) — Representative default (7%): a round figure chosen within the 0%-9% range of commune-set surcharges, since SPF Finances' 2026 rate table lists all 565 communes individually and publishes no single national-average figure to source instead
  • ONSS/RSZ — Employee ONSS/RSZ 13.07% of gross (no ceiling)
  • INASTI/RSVZ — INASTI: 20,50% sur un revenu professionnel jusqu'a 75.024,54 euros
  • INASTI/RSVZ — INASTI, Cotisations 2026 — Independant en activite principale: 14,16% sur la partie du revenu professionnel reevalue... qui depasse 75.024,54 EUR sans exceder 110.562,42 EUR
  • Xerius (citing Code TVA) — Belgium VAT standard rate 21%
  • SPF Finances — Regime de la franchise de taxe pour les petites entreprises -- seuil de 25.000 euros (hors TVA)

⚠️ Informational estimate, not tax advice. Payroll software may differ in edge cases. Verify with a professional.

Belgium tax guides

Embed this calculator

Free to embed on your own website. The paycalceu.com credit is already inside the widget; keeping the link below is appreciated.

The snippet includes a small script, so the widget never shows an inner scrollbar.

Appearance
Font
<iframe data-paycalceu src="https://paycalceu.com/embed/belgium/net-salary-calculator?theme=dark" width="100%" height="560" style="border:0;max-width:640px" loading="lazy" title="Belgium net salary calculator 2026"></iframe>
<script>
window.addEventListener('message', function (e) {
  if (e.origin !== 'https://paycalceu.com') return;
  var d = e.data;
  if (!d || d.type !== 'paycalceu:height' || !d.height) return;
  var f = document.querySelectorAll('iframe[data-paycalceu]');
  for (var i = 0; i < f.length; i++)
    if (f[i].contentWindow === e.source) f[i].style.height = Math.ceil(d.height) + 'px';
});
</script>
<p><a href="https://paycalceu.com/belgium/net-salary-calculator?utm_source=embed">Belgium net salary calculator 2026 — paycalceu.com</a></p>