Here's what you need to do
The first step is to download all your transactions from Bitstamp and upload it into Koinly. There are a couple of ways you can do that:
- As Bitstamp has an API, the fastest way to import everything is to just connect your API keys (API key, API secret). After that, Koinly will sync your transactions, and you will be ready to generate a tax document.
- If you don't have access to your API keys, you can also import transactions by uploading CSV files.
- If you only have a few transactions and the above method(s) are not possible for you, you can even add the transactions one by one via Koinly's web interface.
If you want to import 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 it. The only other thing to keep in mind is to tag your airdrops/forks so they appear as Income on your generated crypto tax documents!