Tax card is a generic term for primary tax card, secondary tax card and tax-exemption card. They are all digital and you find them in E-tax (TastSelv). 
Below you can read where and when you should use the different tax cards.

What is a tax card?

Your tax card is a part of your preliminary income assessment stating your withholding rate. It is also a generic term for three types of tax cards that are used for different situations.

Tax exemption card

Primary tax card

Secondary tax card

Tax exemption card

Your tax exemption card states the amount of money you may earn without having to pay tax.

Primary tax card

Use your primary tax card for the source of income providing you the highest income, your state education grant or job, for example.

Secondary tax card

Use your secondary tax card if you have more than one employer/provider, state education grant and job, for example.

Which card do I use?

Decorative

Decorative

Tax exemption card

You should use your tax exemption card if your income is small or if you are a young worker.

Primary tax card

Use your primary tax card for your primary income.

Secondary tax card

All other employers/providers than the one using your primary tax card should use your secondary tax card.

What should I do?

Tax exemption card

Nothing.

You automatically receive a tax exemption card when you turn 15. It will be used as long as your income does not exceed the amount stated on your card.

Primary tax card

Nothing if you only have one income.

If you have income from more than one employer/provider, you should inform the relevant party to use your primary tax card.

Secondary tax card

Inform your employer if he should use your secondary tax card as somebody else is using your primary tax card.

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