Example
Most of the gap between your contract and your account is not tax. This works the month out line by line, draws it at scale so you can see which deduction is actually the large one, and says what the next hundred euro of a raise would be worth.As of · 2026 payroll rules
What this answers
Which deduction is actually the large one
People blame the income tax for the gap between contract and account. On an ordinary salary the four social insurances take more than the tax office does, and the bar above puts both at their real size rather than in a list where every line looks alike.
The number to keep
What the next hundred euro is worth
Not one minus your average rate, and not one minus your tax rate either. Contributions stop at their ceilings while the tariff keeps climbing, so above those ceilings a raise is suddenly worth more of itself than it was below them.
What it does not answer
What you finally owe for the year
Withholding is a monthly estimate the tax office makes on your behalf. Work-related costs, a second income, a partner's pay and everything else are settled by the return, which is where money usually comes back.