Last updated 08/21/2025 – Reading time: 2 min
B-tax - what is it and how does it work?
If you run a personal business (sole proprietorship, partnership or freelance), you do not pay corporation tax, but rather tax on the company’s profits. This tax is called B-tax and is paid in 10 installments per year. The payment is due on the 20th of the month, except in June and December.
How is B-tax calculated?
B-tax is determined based on the expected profit that you enter in your advance tax return. By making regular payments, you avoid a large residual tax and interest that is not deductible. It also gives you a better financial overview of your business.
The benefits of paying B-tax regularly:
- You avoid a large tax bill.
- You avoid interest that is not tax deductible.
- You get a better overview of your business finances.
If you need help adjusting your withholding tax return or understanding the rules for paying B tax on profits, we can guide you in the right direction.
If you want to read the official rules, you can find more information on the Tax Agency’s website here.
Prepayment statement vs. annual statement
- Prepayments are the current year and an estimate of the expected result.
- The annual report is published the following year in March and is a look back at the actual result.
Example of B tax calculation
If your company expects a profit of DKK 200,000 and the tax rate is 38%, you’ll have to pay DKK 76,000 in B-tax spread over the year. If you don’t pay regularly, you risk a large tax arrears and interest that can amount to several thousand DKK.
Want to avoid back taxes and interest?
At Accountview, we can help you to:
- Adjust your withholding tax return.
- Get on top of B-tax and payments.
- Optimize your tax situation.
If you have more questions or are in doubt about any of the above, you can contact us here for an informal chat.