The Providers listed on these webpages are Approved IRS Modernized e-File (MeF) Providers; however, they are not part of, nor do they have any special relationship with the Internal Revenue Service. The Providers have passed the IRS Assurance Testing System (ATS) requirements for Software Developers of electronic Partnership (1065 MeF) Returns for Tax Year 2018. Meeting the requirements means that the software can provide correct data in the proper format for processing by IRS systems. It does not mean that a software package includes every possible schedule or attachment, or that it will meet the needs of all filers. It is the filer's responsibility to contact the provider to determine if the software meets their needs. The providers are not listed in any particular order. Taxware Systems Inc. 924 W 9th Street, Upland, CA 91786 (800) 877-1065 CrossLink Professional Tax Solutions, LLC 7575 W Linne Rd, Tracy, CA 95304 (800) 345-4337 TaxAct, Inc. 1425 60th Street NE, Suite 300, Cedar Rapids, IA 52402 (319) 536-3571 Corptax, Inc. 2100 E. Lake Cook Road, Suite 800, Buffalo Grove, IL 60089 (800) 966-1639 Profit Developers, Inc. - SAXTAX PO Box 7280, Port St. Lucie, FL 34985, (772) 337-2921 CCH, A Wolters Kluwer Business 9111 E. Douglas, Suite 300, Wichita, KS 67207 (800) 739-9998 Tax Technologies, Inc. 196 Woods Ave, Bergenfield, NJ 07621 (678) 574-2160 Thomson Reuters - UltraTax CS 6300 Interfirst Drive, Ann Arbor, MI 48108 (800) 968-8900 H&R Block One H&R Block Way, Kansas City, MO, 64105, 800-HRBLOCK/800-472-5625
