Go to your API keys page by clicking the dropdown menu at the top right and selecting API Tokens.
Click Create A New Token
Select read for Accounts, Executions, and Orders.
Paste the token ID (API key) and token secret (API secret) to TokenTax.
At the top right, click Wallets. Then, on the top bar, click Transactions.
Scroll down to Overview Report, select a time range containing all of your trades, then click Send Report Via Email
Upload your CSV file to TokenTax.