Here's what you need to do
The first step is to download all your transactions from Cat.Ex and import it to Koinly. There are a few ways you can do this:
- Cat.Ex does not offer an API, so you will need to download your CSV files from their website and upload them to Koinly manually.
- If you only have a few transactions and the above method(s) are not possible for you, you can also add the transactions one by one through Koinly's web interface.
Note that if you decide to use CSV files, you need to make sure to import your deposits/withdrawals and trades for ALL previous years !
That's pretty much it. The only other thing to be vary of is to tag your airdrops/forks so they show up as Income on your final crypto tax documents!