One API call turns a realized crypto gain into a jurisdiction-correct net figure, computed by the same engine behind Taxy's filing-ready tax reports. Here's a mock brokerage with it wired in.
Position
Considering a sale? The panel updates the moment your customer taps Sell.
How the integration works
Your platform knows the realized gain, the asset, and the customer's country the moment they sell. Post it — no tax logic to build or maintain.
Real exemption and holding-period rules run server-side: Germany's §23 one-year exemption, Australia's 50% CGT discount, Poland's flat 19% — the same code that fills official tax forms.
Where tax depends on personal income (Germany, Australia, Japan, the US), pass the customer's marginal rate from onboarding — the number the public estimator can't know, but you do.