About the Tax Calculation API

The Tax Calculation API allows you to retrieve the available tax calculators for a site and to calculate tax. Use the Tax Calculations API together with the Tax Groups API and the Tax Regions API to customize the application of tax for a business.

Before you begin

It's important to note the following before starting to code:

• Tax is calculated based on the tax region and a tax region requires an appId for an available tax calculator. Call List Tax Calculators to retrieve a list of available tax calculators for a site, then create and manage your tax regions before calculating tax.

Use case

• Calculate multi-state tax for the United States

Terminology

• Tax calculator: An app that is used under the hood to calculate tax for a Wix site. The app calculates tax based on the tax group of the product and the tax region of the sale. A site assigns each tax region to the Wix manual tax calculator or an external calculator app to properly calculate tax.
• Wix manual tax calculator: The default tax calculator installed with a Wix site. The tax rates to apply for this calculator can be manually adjusted in the Tax Settings in the Wix dashboard.