When reviewing your tax summary on the "Tax Reports" page, you may notice that the total calculated capital gains is wrong/implausible.

Koinly's cost basis calculation engine determines your total capital gains based on:

While resource-intensive, those calculations are quite straight-forward for a machine to compute so if the calculations seem wrong, it means one of the above is wrong.

Follow the article below to check your imported data for correctness/completeness:

Koinly's calculation may be mathematically correct, but not correct for you - rules that Koinly should follow depend on the tax regulations in your Country and possibly on additional factors as well (e.g. individual vs business).

Check the article below for an overview of what you need to know in order to properly assess Koinly's calculations: