Avalara 1099 & W-9

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The Avalara Unified SDK provides generated clients for multiple Avalara REST APIs in a single package. Use it to integrate Avalara 1099 & W-9 (A1099 v2) alongside other supported services in your preferred language.

These libraries are open source. Report issues or ask questions using the GitHub repository for your language.

Unified SDK — Avalara 1099 & W-9

Open the A1099 v2 API section in the README for your language to install the package and call 1099 & W-9 endpoints:

C#
C#
Java
Java
TypeScript
TypeScript
PHP
PHP
Ruby
Ruby
Python
Python