A taxable event will leave you with capital gains (profit) or capital losses. If an asset you’re holding appreciates and you trade it at a profit, you’ve made capital gains. If you trade or sell that asset at a loss, you’ve incurred capital losses.
Again, whether capital gains are a taxable event depends on your local tax authority. You may be able to deduct capital losses from your capital gains to reduce your taxes. Your overall amount of tax depends largely on the sum of these together. To help calculate this, taxpayers should note the date, cost basis (purchase price), sale value, and fees associated with all trading transactions.