Issuers of Annual Tax Documents

Your company sponsors (or engages another company to sponsor) a server that hosts annual tax document data and interfaces with tax software applications.

Income Tax Return Preparation Applications

Your tax software retrieves tax document data on behalf of a taxpayer from an API server and imports the data into the tax return of the taxpayer.

Financial Data Exchange|API

For extensive technical details, example payloads and sample code, check out site Tax Data Exchange – API.