Corporate tax calculator for Belgian companies
Corporate tax calculator: 20% or 25% for your Belgian company?
Your figures
The reduced rate requires at least €45,000.
The result updates automatically.
Corporate income tax
€25,000
Applicable rate
20% then 25%
Net result after tax
€95,000
Tax computation
- Pre-tax result
- €120,000
- Carried-forward losses applied
- -€0
- Taxable base
- €120,000
- Tax due
- -€25,000
Analysis and optimisation
Free account- Effective tax rate
- •••••
- Declared director remuneration
- •••••
- Saving from the reduced rate
- •••••
- Annual company contribution
- •••••
- Distributable base after tax
- •••••
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What you should know
- The simulator only checks the remuneration condition. The other reduced-rate conditions (shareholding, non-financial company, dividends not exceeding 13% of paid-up capital) remain to be checked with your accountant.
Belgian corporate tax runs at 25%. However, small companies under the Companies and Associations Code pay 20% on the first €100,000 of taxable base. The saving therefore reaches up to €5,000 a year.
That reduced rate never applies automatically. Most often, small companies miss one condition: the director's remuneration.
The €45,000 condition in the corporate tax calculator
The reduced rate requires a large enough salary. In practice, the company pays at least €45,000 a year to one individual director. If the taxable result stays lower, the threshold drops to that result. That nuance saves many small structures.
The trade-off feels counter-intuitive. Paying the missing salary costs the director social contributions and personal income taxation. In return, the company saves five rate points on €100,000. The calculator measures the gap, and the answer very often favours paying.
Carried-forward losses and the tax basket
Fiscal losses carry forward without time limit. Nevertheless, their annual use has a cap. It works in full up to one million euros of profit, then up to 70% of the excess.
Thus, a very profitable company that follows loss-making years still ends up paying. That holds even when its carried-forward losses exceed the year's profit.
Other conditions for the reduced rate
The reduced rate also requires independent ownership. Other companies must not hold more than half of the shares. Moreover, the company must not operate as a financial company. Finally, its dividends must stay below 13% of paid-up capital at the start of the taxable period.
Your accountant checks those points. The calculator only tests the remuneration and flags the gap.
Paying without surprises
The bill does not fall due in one go. Indeed, advance payments spread it over the financial year. Otherwise, the administration adds a surcharge. So set money aside every quarter, from the first profits.
Frequently asked questions
What is the corporate tax rate in Belgium?
25% as a rule. Small companies meeting the legal conditions enjoy 20% on the first €100,000 of taxable base.
What if the director earns less than €45,000?
The company loses the reduced rate and pays 25% on its whole base. If the taxable result is itself below €45,000, the threshold drops to that result and the condition becomes reachable again.
Do losses carry forward indefinitely?
Yes, without time limit. But above one million euros of annual profit, their use is capped at 70% of the excess portion.
Do you pay it in one go?
No. Advance payments spread the charge over the financial year, and skipping them triggers a surcharge. Set money aside every quarter.
Which companies qualify for the reduced rate?
Small companies within the meaning of the Companies and Associations Code that pay a director at least €45,000, are not more than half owned by other companies, are not financial companies and keep dividends within 13% of paid-up capital.
Other free calculators
Corporate tax calculator, France
Corporate tax in France: 15% then 25%, losses included.
Optimal director remuneration, Belgium
Optimal remuneration: the salary and dividend split that maximises your net pay.
Optimal director remuneration, France
Director remuneration in France: salary or dividends under the 30% flat tax.
Informative calculators. The 2026 rates were cross-checked against public sources but have not yet been validated by an accountant. They change every year. These calculations are neither tax nor legal advice.