The tax rate is applied to the doubloon cost of a recipe. So for example Mine Iron's base cost is 240 . If the tax rate of a port is 40% you pay 336 . Tax rate is NOT applied to any required ingredients. Retrieved from "https://potbs.fandom.com/wiki/Tax_rate?oldid=19724" Categories: Game Terminology Economy Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.