Avalara 1099 & W-9 API

REST discovered

Details

Docs: https://developer.avalara.com/products/avalara-1099-and-w9/api/

Authentication

Avalara 1099 & W-9 API client credentials oauth2 discovered Set up OAuth ↗

In your Avalara 1099 account, go to Your Profile → API and generate a client ID and client secret as described on the Avalara 1099 & W-9 API page. Use that app registration for OAuth-based API access.