Awarding of cryptocurrency based on a specific currency
If you are awarded free cryptocurrency as a consequence of a hardfork because you own a particular cryptocurrency, the cryptocurrency awarded is considered to have been acquired with the same intention as the cryptocurrency originally acquired.
Example: You are awarded 1 free bitcoin cash because you own 1 bitcoin. If your bitcoin purchase is for the purpose of speculation, the intention of the bitcoin cash awarded will also be considered to be speculation. If you subsequently want to sell your bitcoin cash, you must therefore calculate a gain according to the FIFO principle, and together with your other bitcoin cash holdings.
You do not have to pay tax on your awarded hardfork until you sell it. The purchase price is DKK 0 for the awarded hardfork, and therefore any sale thereof will always result in a gain equivalent to the selling price.
If you subsequently make additional purchases of the type of cryptocurrency you were originally awarded, the FIFO principle is applied. This entails that both gains and losses can be realised because the cryptocurrencies first purchased are considered to have been sold first.
Read more about the FIFO principle here under the heading Calculate your transactions.