Here's what you need to do
The first step is to download all your transaction data from GDAC and import them to Koinly. There are a couple of ways you can do this:
- GDAC does not have any API, so you will need to download your transaction files from their web UI and import them to Koinly manually.
- If the above method(s) is not possible for you, you can even add the transactions manually through Koinly's web interface.
Note that if you want to use CSV files, you have to make sure to import your deposits/withdrawals and trades for ALL previous years and not just the current one!
That's it. Don't forget to tag your airdrops/forks so they appear as Income on your generated crypto tax documents!