# Core requirements overview

Source: https://developer.avalara.com/products/avalara-1099-and-w9/integration-guides/1099-and-w-9/yxr9099313380784/

Guide: 1099 & W-9

# Core requirements overview

Understand the core functionality required for Avalara 1099 and W-9 API certification.

This page outlines the core functionality that your application must support to become a certified partner for the Avalara 1099 and W-9 APIs. Reviewing this section will help you plan your integration.

You can choose to integrate with:

-   1099 forms only
-   W-series forms (W-9, W-4, W-8) only
-   Both 1099 and W-series forms

Partners will receive separate certification badges for each integration track. You can become certified in one or both tracks, depending on your business model and product offering.