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Developer program

Build on the e1099f filing API

File 1099s programmatically, register OAuth apps your customers can authorize, and test everything against a free, isolated sandbox before a single real form goes to the IRS. Joining takes one click once you're signed in.

REST API for filings, recipients, payers, and TIN matching
Sandbox environment with seeded test companies — always free
OAuth 2.0 apps that act on your customers' own accounts
Webhooks, request logs, and prepaid usage billing
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