B-income

If you have fixed B-income, it is easiest to pay the correct tax by entering your B-income in your preliminary income assessment (forskudsopgørelsen):

• in field 210 if, for example,
  • you get fees
  • your income is earned as domestic help
    Further guidance about field 210

or 

• in field 207 if, for example
  • you earn your income as a private daycare without being subsidies by the municipality
  • you get free food and accommodation (if this is not reported in field 201)
  • you get remunerations from associations of less then DKK 1,500 for jobs done
  • you have other salary or fees that is not reported in other fields
    Further guidance on field 207

The amount you report is before labour market contributions (am-bidrag).
Once you have reported your B-income in your preliminary income assessment, we will withhold tax by increasing your withholding rate and/or lowering your monthly allowance.

If we are unable to include all your tax, you will have to pay the remaining tax by using giro transfer forms. You will know if you have to do so when you change your preliminary income assessment.

You can pay your B-tax by dankort/MobilePay or get a payment ID for your bank/online banking.

When you pay B- tax in instalments, you pay the tax in 10 instalments. This means that you have to pay an instalment each month apart from June and December.

If your B-income was earned as a lump sum, you can pay tax and labour market contributions (AM-bidrag) in two ways:

• Pay tax using a dankort or via online banking (link in Danish)
  (The amount should always be rounded off). Find guidance in the section Calculating your B-tax and your labour market contribution on lump sums below.
  
  When you get your tax assessment notice (årsopgørelse) in March you should check or enter the amount you have to pay tax on (your B-income) in field 12 or 15.
  If you have any other personal income, your B-income will often not be transferred automatically to your tax assessment notice.
  
  or
  
  
• Correct your preliminary income assessment (field 210 or 207)
  Enter the amount you expect to earn as fees/B-income this year in field 210 or 207. (Don't deduct labour market contribution (AM-bidrag) from the amount.)
  
  Read how you do this in the section Paying tax on fixed B-income on this page. You can update your preliminary income assessment several times during the year, if your B-income or fees change.
  
  When you update your preliminary income assessment in these fields, we will make sure you pay tax by increasing your withholding rate (trækprocent) and/or reduce your monthly allowance and perhaps generate giro transfer forms.

Enter B-income in your preliminary income assessment 

As of 2026, you will not be charged labour market contributions on B-income, profit on your business and salary from the calendar year you turn 18.

You are responsible for paying B-tax and labour market contribution (AM-bidrag) on your B-income. If you choose to pay both in one go, you calculate the tax and contribution as follows:

First, you need to calculate the labour market contribution on your B-income. You do so by deducting 8% from your B-income.
Next, you calculate the actual tax (B-tax) - after you have deducted the labour market contribution - using your withholding rate (trækprocent) that is stated on your preliminary income assessment (forskudsopgørelse).
Finally, you add the B-tax and the labour market contribution and total of these two amounts is what you have to pay. You pay the amount by using dankort or via online banking (link in Danish).

Example

Your B-income is DKK 1,000 and in your preliminary income assessment it says that your withholding rate is 38%.

In this example you would have to make a payment of B-tax and labour market contribution of a total of DKK 430.00 of this B-income. Please note that the amount should be rounded off.  You can make the payment using dankort or online banking (in Danish).

As of 2026, you don't have to pay labour market contributions until the calendar year you turn 18.

You change or cancel your B-tax instalments and giro transfer forms in your preliminary income assessment by:

• Changing your income in field 210 or 207.
• Entering the amount of B-tax you have already paid in field 342.

You may now discard the rest of the original giro transfer forms.

Change your preliminary income assessment, fields 210, 207 and 342

If you have received giro transfer forms and have to pay from abroad, you need to use:

• IBAN no: DK94 30000007540531

• BIC/SWIFT code: DABADKKK

In the ’Message for the recipient’ field (Meddelelse til modtager), please enter your civil registration number (CPR) and what the amount concerns.

If the payment line does not appear from your giro transfer forms, you can:

1. Log on to E-tax (TastSelv)
2. Select Pay tax
3. Select Pay B-tax in the menu on the left