Corporation Tax
Where a token/crypto-asset is being used in a trading activity, companies are to be taxed on their trading profits. Profits need to be calculated in GBP therefore all transactions need to be converted into GBP at the time of the transaction.Where a token/crypto-asset is used in a non-trading activity, it is be treated as an investment and so any gain on disposable is to be subject to CT on chargeable gains. Some but not all costs can be allowed as a deduction when calculating the gain. Cost of mining for example is not allowed unless the mining activity is done as a trade. The calculation method is following section 104 of the TCGA 1992 i.e. using a pool per asset class but with slightly different anti-bed-and-breakfast rules (a sale is matched against the pool unless a purchase happen in the next 10 days -- and not 30 as usual). And in case of a hard fork, cost base needs to be split on a "just and reasonable" basis.