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Avalara Developer

Avalara Developer (developer.avalara.com) is the official developer experience site for Avalara, providing API documentation, SDKs, MCP servers, and integration guides for tax compliance automation across sales tax, excise, communications, e-invoicing, exemption certificates, returns, and cross-border trade.

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For agents: Avalara Developer: API reference, SDKs and MCP servers for sales tax, excise, e-invoicing, exemption certificates and tariff classification.

sales tax api tax compliance avatax e-invoicing tariff classification

Authority: 66 reach 16 · trust 10 · quality 25 · freshness 15
Tier: listed
llms.txt: https://developer.avalara.com/llms.txt
llms-full.txt: https://developer.avalara.com/llms-full.txt
Sections: 10
Links: 88
Size: 14031 bytes
Popularity rank: #13495
Registered: 2003-12-08
Country: — Publisher location unknown; CDN address excluded
Country evidence: No published address evidence collected yet
Categories: Developer tools · AI and machine learning · APIs and SDKs · Business software
For agents: Interface: a documented API or declared MCP endpoint an agent can call
Inferred actions: Read documentation Call an API About these labels
Audience: developers · agents can: read docs, call api · en
First seen: 2026-10-18T15:08:53.022Z
Last checked: 2026-10-24T03:05:20.292Z
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Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-24T03:05:18.550Z. Cached copy · Source on avalara.com

# Avalara Developer

> Avalara Developer (developer.avalara.com) is the official developer experience site for Avalara, providing API documentation, SDKs, MCP servers, and integration guides for tax compliance automation across sales tax, excise, communications, e-invoicing, exemption certificates, returns, and cross-border trade.

This site is the central hub for developers integrating Avalara products into their applications. It covers REST and GraphQL APIs, unified SDKs, MCP (Model Context Protocol) servers for AI agents, interactive API playgrounds, and integration guides. Use the linked product pages, API references, and guides below as the canonical sources.

## Products

- [AvaTax](https://developer.avalara.com/products/avatax.md): Calculate and apply sales tax in real time using up-to-date rates and rules across jurisdictions.
- [AvaTax for Communications](https://developer.avalara.com/products/communications.md): Calculate communications taxes using telecom-specific rules, rates, and regulatory logic.
- [AvaTax for Excise](https://developer.avalara.com/products/excise.md): Calculate excise taxes using product-specific rules and regulatory requirements.
- [AvaTax Cross-Border](https://developer.avalara.com/products/crossborder.md): Calculate duties, taxes, and import fees for cross-border transactions and landed cost.
- [AvaTax Brazil](https://developer.avalara.com/products/avatax-brazil.md): Calculate and apply Brazil taxes using localized rules, rates, and compliance logic.
- [Tariff Code Classification](https://developer.avalara.com/products/item-classification.md): Assign products to correct HS or tariff codes for duty calculation and trade compliance.
- [Avalara Tax Content](https://developer.avalara.com/products/avalara-tax-content.md): Up-to-date tax rates, rules, and jurisdiction mappings for ERP, POS, and billing systems.
- [Avalara Managed Returns API](https://developer.avalara.com/products/returns.md): Embed tax return preparation, filing, and remittance into your platform.
- [Avalara Returns Excise](https://developer.avalara.com/products/excisereturns.md): Automate excise tax return preparation, filing, and reporting.
- [Exemption Certificate Management](https://developer.avalara.com/products/ecm.md): Collect, validate, and manage exemption certificates for audit-ready compliance.
- [Avalara E-Invoicing and Live Reporting](https://developer.avalara.com/products/e-invoicing.md): Automate electronic invoicing and real-time reporting for global e-invoicing mandates.
- [Tax Registrations and Business Licenses](https://developer.avalara.com/products/registration-and-licensing.md): Register for tax accounts across jurisdictions to support compliance and filing.
- [Avalara 1099 & W-9](https://developer.avalara.com/products/avalara-1099-and-w9.md): Collect, validate, and report vendor tax forms for IRS compliance and 1099 filing.
- [MyLodgeTax](https://developer.avalara.com/products/mylodge.md): Calculate, file, and manage lodging tax
…

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