Avalara APIs
Build on the Avalara platform
Interactive documentation, sample payloads, and response examples for every Avalara API. Review endpoints, parameters, and authentication, then make your first call in minutes.
16 APIs
Calculations
AvaTax→AvaTax automates real-time sales and use tax determination across jurisdictions, enabling accurate tax calculation.AvaTax for Communications→Automates communications tax determination for telecom, cable, VoIP, streaming, and related services.AvaTax for Excise→Automates excise tax determination for fuel, energy, tobacco, alcohol, and other regulated commodities.Avalara Tax Content→Avalara Tax Content (ATC) provides centralized, regularly updated tax data to support accurate calculation across systems.AvaTax Brazil→Automates indirect tax calculation and fiscal compliance for businesses operating in Brazil.
Cross-border & trade
Item Classification→Automates HS code assignment for accurate tariff classification and trade compliance.Tariff Code Classification→Assigns accurate HS and tariff codes to products to support duty calculation and trade compliance.Self-Serve Tariff Classification→Classifies products based on the provided product information for the specified country of destination.
Returns & filing
Avalara Managed Returns API→Enables partners and platforms to embed tax return preparation and filing into their workflows.VAT Reporting API→Helps businesses manage the preparation and submission of value-added tax (VAT) obligations across jurisdictions.MyLodgeTax→Helps short-term rental operators and lodging platforms file and manage lodging tax based on a property's rental address.