Here's what you need to do
The first step is to download all your data from Coinbase Prime and upload it into Koinly. There are a couple of ways you can do that:
- As Coinbase Prime has an API, the most efficient way to import everything is to simply connect your API details (access key, passphrase, signing key). After that, Koinly will download all your transactions automatically, and you will be ready to create your tax document.
- If you don't have access to your API keys, you can also import transactions by uploading your CSV files.
- If the above method(s) is not possible for you, you can even add the transactions manually via Koinly's web interface.
Note that if you want to import CSV files, you need to make sure to import your deposits/withdrawals and trades for ALL previous years !
That's all you have to do. The only other thing to keep in mind is to tag your airdrops/forks so they appear as Income on your final crypto tax documents!