Learn about calculating tax when you have a third-party integrated eCommerce or POS system.

With few exceptions, if your eCommerce or POS system is an integrated partner of ShipCompliant, your tax preferences dictate the rates used to calculate tax in real time at the time of purchase, as long as shipping is enabled for that state.

ShipCompliant will return specific tax calculations for all API calls based on product (such as wine, food, andfreight) and location.

You can check the rates that will be returned by these integrations by using the tax rate lookup tool to search rates by address. You can also view multiple rates at once by searching for just the ZIP code or state.