About this guide

Welcome to the AvaTax Marketplace Integration Guide! If you're supplying sales tax calculation for your marketplace and marketplace vendors, this guide describes the steps you should follow to integrate Avalara AvaTax into your US or Canadian marketplace system.

The sections are broken down into individual milestones in the order they should be completed in your integration, so be sure to complete a milestone before moving on to the next.

Advice: If you're using an "out-of-the-box" solution for your integration, then this guide isn't necessary. Also, this guide is for integrations that will be calculating sales tax only and is not meant for calculating other types of tax (for example, lodging, VAT, etc.).

Important:

Marketplace integrations are only supported for US and Canada marketplaces.
If you offer a platform, and you would like to build an integration to provide sales tax calculation to your client base within that platform, please send an email to techpartners@avalara.com. A member of our technology partnerships team will reach out to discuss your use case.
Marketplace laws have changed over the years and will continue to change. As a result, this document is also subject to change.

Disclaimer: The information provided in this Integration Guide is based on standard practices. It is up to each individual developer to determine the applicability of such information and to verify the functionality and use of the information. All information, including examples of code, is provided on an "As-is" basis. Use of Avalara's website is covered by Avalara's site terms located here: https://www.avalara.com/us/en/legal/site-terms.html.

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