Internal Revenue Service
The Internal Revenue Service (IRS) is the United States federal tax collection agency and a bureau of the Department of the Treasury. The IRS publishes developer resources for tax software providers and transmitters including the Modernized e-File (MeF) system for electronic tax return submission, the e-Services suite for authorized e-file providers, and Publication 4164 (the MeF Guide for Software Developers and Transmitters) which documents the XML schemas and transmission protocols required for integration.
APIs
IRS Modernized e-File (MeF)
The IRS Modernized e-File (MeF) system is the web-based electronic filing platform supporting individual, business, and tax-exempt return submission via XML-based schemas. Softw...
IRS e-Services
IRS e-Services is a suite of web-based products for tax professionals, reporting agents, and authorized e-file providers offering Transcript Delivery, TIN Matching, e-file appli...