IRS updates Modernized e-File testing specifications

The IRS has updated the Modernized e-File (MeF) testing specifications. The guidance contains general and program specific testing information for use in completing the Assurance Testing System (ATS) process. The ATS is a process to test software and electronic transmissions prior to accepting Software Developers, K-1 Aggregators, Transmitters and Large Taxpayers into the MeF program. Assurance testing is an annual process that tests the tax preparation software and/or the electronic transmissions for each software developer, transmitter and large taxpayer wanting to participate in the MeF Program. In order to participate in the MeF Program, each software developer and transmitter must pass testing for each form type and each tax year that they support. ATS scenarios are available on the Modernized e-File (MeF) Assurance Testing System (ATS) Updates webpage at https://www.irs.gov/e-file-providers/modernized-e-file-mef-assurance-testing-system-ats. (IRS Submission Processing Publication 5078, Assurance Testing System (ATS) Guidelines for Modernized e-File (MeF) Business Submissions, May 2018.)

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