A simple guide on setting up Variable Tax Classes
Purchase and Sell in multi-currency. Set your Base Currency to trade in e.g. GBP, USD or EUR etc, add Currencies to the Currency chart, set Exchange Rates for Purchase Orders and Sales Orders. Use specific exchange rates for each Purchase Order or Sales Order or simply draw the exchange rate from the Currency Chart.
This video takes you through setting the base currency for trading using Stok.ly.