Here's what you should do
The first and usually only step is to download all your transactions from BTC-exchange and import it into Koinly. There are a few ways you can do this:
- BTC-exchange does not offer an API, so you will need to download your CSV files from their web interface and import them into Koinly manually.
- If the above method(s) is not possible for you, you can also add the transactions one by one through Koinly's web interface.
If you want to use CSV files, you need to make sure to import your deposits/withdrawals and trades for ALL previous years - not just the current one!
That's pretty much it. Don't forget to tag your airdrops/forks so they appear as Income on your final cryptocurrency tax documents!