Income tax calculation zzp

Q: When do I have to pay my 2025 income tax as a self-employed person?

You file your 2025 income tax return between 1 March and 1 May 2026. But it is smart to calculate what you have to pay before then, so that you can set aside enough money during the year.

Q: How much income tax do I have to pay as a self-employed person?

That depends on your profit, your deductions (such as self-employment deduction and SME profit exemption) and possibly your income from employment. Our tool will quickly give you a good estimate based on your data.

Q: What if I have both salaried and self-employed income?

Then you add up both incomes in Box 1. You may then be less entitled to deductions, such as the self-employed deduction (depending on the hour criterion). Our tool takes this into account and gives you an overall picture.

Q: What should I pay attention to when calculating my income tax as a self-employed person?

Pay attention to whether you meet the hour criterion, whether you are entitled to start-up deduction, and whether you can deduct certain expenses. Think of pension contributions, business expenses and AOV. Our tool will help you not miss anything.

Q: What is the difference between this calculation and the real tax return to the Inland Revenue?

This calculation is an indication. You enter expected amounts, but when you file your tax return, you will use the actual figures. The tool helps you be prepared and plan smartly.

Want to know how much income tax you have to pay as a self-employed person? Whether you are a full-time entrepreneur or run your own business alongside salaried employment, here you will find the right tool for your situation.

Choose the option that suits you and instantly calculate your income tax for 2025.

Full-time self-employed (tool 1)

Are you fully self-employed? This tool takes into account all tax benefits for self-employed people, such as the self-employed deduction, start-up deduction and the SME profit exemption.

Self-employment and salaried employment (tool 2)

Do you work part-time as an employee and have a business in addition? Then use this tool. You fill in your gross salary and your self-employed income, and immediately see what you have to pay in total.

Want to know more about how income tax works for self-employed people?

Read us Article on income tax for self-employed.

Frequently Asked Questions

When do I have to pay my 2025 income tax as a self-employed person?

You file 2025 income tax return between 1 March and 1 May 2026. But it is smart to calculate what you need to pay before then, so that you can set aside enough money during the year.

How much income tax do I have to pay as a self-employed person?

That depends on your profit, you deductions (such as self-employment deduction and SME profit exemption) and possibly your income from salaried. With our tool, you can quickly get a good estimate based on your data.

Does the tool take into account deductions?

Yes, the tool takes into account important tax advantages, such as the self-employment deduction, SME profit exemption and the hours criterion.

What if I have both salaried and self-employed income?

Then you add both incomes in box 1. You may then be less entitled to deductions, such as the self-employed deduction (depending on the hour criterion). Our tool takes this into account and gives you an overall picture.

What should I pay attention to when calculating my income tax as a self-employed person?

Make sure you comply with the hours criterion, whether you are entitled to start-up deduction, and whether you can deduct certain expenses. Think pension contributions, business expenses and AOV. Our tool will help you not miss a thing.

What is the difference between this calculation and the real tax return to the Inland Revenue?

This calculation is a indication. You enter expected amounts, but when you file your tax return, you use the actual figures. The tool helps you be prepared and plan smartly now.