> This page is for Documentation, version Integration guides (default).
> For other versions, use one of these documentation indexes:
> - Integration guides (default): https://avalara.ferndocs.com/docs/integration-guides/llms.txt
> - Refactor guides: https://avalara.ferndocs.com/docs/refactor-guides/llms.txt
> - Get certified: https://avalara.ferndocs.com/docs/get-certified/llms.txt
> - Agent to Agent (A2A): https://avalara.ferndocs.com/docs/agent-to-agent-a2a/llms.txt
> - AI use cases: https://avalara.ferndocs.com/docs/ai-use-cases/llms.txt
> - API versioning: https://avalara.ferndocs.com/docs/api-versioning/llms.txt

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://avalara.ferndocs.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://avalara.ferndocs.com/_mcp/server.

# Get started

Guide: AvaTax Excise

Learn how to integrate AvaTax Excise into your billing system and meet certification requirements.

Welcome to the AvaTax Excise integration guide. If you're supplying excise tax, this guide walks you through integrating basic AvaTax Excise (ATE) into your billing system. Each section represents a milestone in the integration process. Complete each milestone before starting the next.

If you're a technology partner, each milestone includes a certification requirements section for you to quickly learn what needs to be accomplished to earn an Avalara AvaTax Excise badge. The badge requirements are broken down into the following types:

* **Required:** We require you to include this design element to become certified.
* **Conditional:** Depending on your use case, this design element may be required.
* **Suggested:** You don't need this design element to become certified, but we recommend that your UI includes suggested elements.

Certification doesn’t entail a code review from Avalara. The requirements are provided to help you create an integration that’s straightforward and uncomplicated for your users and to help you ensure that your integration is tax-compliant.

If you're an API customer, follow this guide when you use AvaTax APIs in your own systems.

Notice 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](https://www.avalara.com/us/en/legal/site-terms.html).

> **Note**
>
> Part of the **AvaTax Excise** integration guide. [Open the full "Get started" milestone on Avalara](https://developer.avalara.com/products/excise/integration-guides/excise/grd1393028324404/) to see every page in this section.