How do I set up tax rates in BigCommerce? To learn how to set up tax rates in BigCommerce, please refer to BigCommerce’s official guide available here. Related articles How do I set up BigCommerce shipping rates and match them with Gelato flat rates? How do I add Gelato products to my BigCommerce store? Getting Started with Taxes How do I set up tax rates in Squarespace? How do I add Gelato products to my Wix store?