Avalara helps businesses of all sizes get tax compliance right. We deliver cloud-based solutions that work with existing business applications to calculate tax accurately and file returns automatically.
APIs.json: https://raw.githubusercontent.com/api-evangelist/avalara/refs/heads/main/apis.yml
- Type: Index
- Position: Consumer
- Access: 3rd-Party
- Taxes
- Created: 2025-11-19
- Modified: 2026-05-30
Automate compliance with Avalara MCP servers for AI-driven tax workflows and APIs. Have your agent call our agent.
- Human URL: https://developer.avalara.com/
- Taxes
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The AvaTax API is a set of application programming interfaces provided by Avalara that allows businesses to integrate automated, real-time sales and use tax, VAT, and GST calculations directly into their own software applications. This allows for seamless and accurate tax compliance for every transaction, regardless of jurisdiction or product type.
- Sales Tax
- Taxes
- VAT
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The AvaTax SOAP API exposes the most commonly used features for interacting with the AvaTax service, allowing calculation of tax, modification of documents, and validation of addresses.
- SOAP
- Taxes
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Communications Tax API (SaasPro) provides communications tax calculations using information provided by jurisdiction codes, enabling tax calculations on invoices and line items, jurisdiction determination via geocoding, and profile customization.
- Communications
- Taxes
- Telecom
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Excise Platform API provides an external programmatic interface for the Avalara Excise application, enabling excise tax calculation and management, business entity imports, location management, and other tax compliance operations through REST API endpoints.
- Excise
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Item Classification API allows users subscribed to the Item Classification service to submit products for classification and retrieve the corresponding HS Codes, with support for storage and non-storage subscription models.
- Classification
- HS Codes
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Tax Content for Retail Configuration API automates tax content delivery for brick-and-mortar businesses, enabling management of configurations, communications, jobs, onboarding, and user roles for point-of-sale tax content.
- Point of Sale
- Retail
- Taxes
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The AvaTax Brazil API exposes the most commonly used services for interacting with AvaTax-Brazil, allowing calculation of taxes, issuing electronic invoice documents, and modifying existing transactions when allowed by tax authorities for businesses with a physical presence in Brazil.
- Brazil
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara VAT Reporting API orchestrates end-to-end VAT compliance workflows including onboarding, file ingress, error handling, filing of VAT Returns, EC Listings, Intrastat, and transaction reporting across multiple jurisdictions.
- Reporting
- Taxes
- VAT
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The MyLodgeTax API provides sales and lodging tax compliance for short-term property rentals, offering partners access to summarized tax responsibilities for property owners by marketplace including direct listings and marketplace bookings.
- Lodging
- Short-Term Rental
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara CertCapture RESTful API provides document management for tax-exempt sales, including managing certificates, attributes, custom fields, customers, authentication tokens, and eCommerce token generation for CertCapture 6.X and beyond.
- Certificates
- Exemptions
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- AsyncAPI — AsyncAPI Specification
The Avalara E-Invoicing REST API supports sending data within the Alpha scope for e-Invoicing compliance use cases, enabling technology partners to integrate e-invoicing workflows for cross-border and domestic compliance.
- Compliance
- E-Invoicing
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Activation Service API allows technology partners to retrieve the status of their registrations within the Avalara Compliance Cloud platform, providing endpoints for listing all registrations and retrieving individual registration details.
- Registration
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Business API provides public APIs for doing business with Avalara, including registering customer accounts and creating sales orders for Avalara services through partner integrations.
- Business
- Orders
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Portal OAuth API provides OAuth token generation and session management endpoints for implementing authentication in Avalara platform integrations, supporting credential-based authentication and SAML assertions.
- Authentication
- OAuth
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Shared Company Service API provides scalable APIs for managing canonical company and contact information across Avalara products, enabling creation, retrieval, update, and deletion of company records.
- Company Management
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara HSCode and AvataxCode Classification API classifies products into Harmonized System Codes (HS Codes) and Avalara Tax Codes, providing tariff code predictions based on product information and destination country with confidence levels.
- Classification
- HS Codes
- Tariff
- Taxes
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara Cross Border Tariff Content API classifies products based on provided product information for the specified country of destination, supporting interactive classification dialogues, trade data access, certificate generation, and data downloads.
- Cross-Border
- Tariff
- Taxes
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara 1099 and W-9 API automates collection, validation, and e-filing of IRS forms including 1099 variants, 1095 forms, W-2, and 1042-S, providing endpoints for creating, updating, and managing various IRS forms for US and foreign companies.
- Tax Forms
- Taxes
- W-9
- Documentation
- OpenAPI — OpenAPI Specification
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
The Avalara License Guidance Order API enables placing Avalara License Guidance orders and populating questionnaire responses with known business information, returning order confirmation details including unique order URLs and numbers.
- Licensing
- Registration
- Taxes
- Documentation
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
- Arazzo Workflows — Arazzo Specification
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FN: Kin Lane Email: kin@apievangelist.com FN: Avalara Developer Relations Email: developer.relations@avalara.com