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

# AvaTax and ECM

> API solutions for end-to-end tax compliance.

## Docs

- [About this guide](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/about-this-guide.md)
- [Planning your integration](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/planning-your-integration.md)
- [Additional resources](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/additional-resources.md)
- [Glossary](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/glossary.md)
- [Authentication](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/authentication.md)
- [Error handling](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/error-handling.md)
- [Configure AvaTax and Document Management](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/configure-avatax-and-document-management.md)
- [Design the admin and utilities user experience](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/design-the-admin-and-utilities-user-experience.md)
- [Design the Sales and Use Tax user experience](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/design-the-sales-and-use-tax-user-experience.md)
- [Design the transaction workflow](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/design-the-transaction-workflow.md)
- [Transactions](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/transactions.md)
- [Example transactions](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/example-transactions.md)
- [Calculate tax offline](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/calculate-tax-offline.md)
- [FAQs](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/faqs.md)
- [Design the Document Management user experience](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/design-the-document-management-user-experience.md)
- [Design the Document Management workflow](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/design-the-document-management-workflow.md)
- [Test Document Management](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/test-document-management.md)
- [FAQs](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/faqs-17.md)
- [Submit your integration for review](https://avalara.ferndocs.com/docs/integration-guides/sales-and-use-tax/avatax-and-ecm/submit-your-integration-for-review.md)