How to enter gains in box 20:
Select Ret årsopgørelsen/oplysningsskemaet (Correct your tax assessment notice/tax return).
Go to box 20 Anden personlig indkomst (Other personal income). If you have not filled in the box before, you will find it under Anden indkomst (Other income) and then Fradrag (Deductions).
Enter your total gains.
Select Næste (Next) at the bottom of the page.
Select Godkend (Accept).
How to enter losses in box 58:
Select Ret årsopgørelsen/oplysningsskemaet (Correct your tax assessment notice/tax return).
Go to box 58 Øvrige lønmodtagerudgifter (Other earned income expenses). If you cannot see box 58 on your tax assessment notice, please contact us and request it to be opened.
Enter your total losses.
Select Næste (Next) at the bottom of the page.
Select Godkend (Accept).
Declare your gains/losses on financial contracts
You must declare the gains in box 346 of your tax assessment notice (årsopgørelse).
You can deduct losses on your financial contracts if the loss does not exceed tax-liable, declared net gains for the 2002 income year and subsequent income years. Losses must be declared in box 346 of your tax assessment notice (årsopgørelse), preceded by a minus sign.
A loss against which your gain cannot be offset (for carryforward) must be entered in box 85 of your tax assessment notice.
If you have sold cryptocurrency in previous years
If you have sold cryptocurrency in previous years without entering gains or losses on your tax assessment notice, you must correct the tax assessment notice for the year in question.