Providers listed on this webpage 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 following companies have passed the IRS Assurance Testing System (ATS) requirements for Software Developers of electronic BMF Extension Returns for Tax Year 2017. 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. Petz Enterprises, LLC PO Box 611 Tracy, CA 95378-0611 (800) 345-4337 Thomson Reuters - UltraTax CS 6300 Interfirst Drive, Ann Arbor, MI 48108 (800) 968-8900 Thomson Reuters – ONESOURCE Trust Tax Company 2395 Midway Road, Carrollton, TX 75006 (800) 327-8829 Corptax, Inc. 2100 E. Lake Cook Road, Suite 800, Buffalo Grove, IL 60089 (800) 966-1639 Yakshna Solutions, Inc. 950 Herndon Parkway, Suite 280, Herndon, VA 20170 (703) 229-0326 Span Enterprises, LLC 202 E. Main St., Rock Hill, SC, 29730 (704) 684-4751 Tax Technologies, Inc. 196 Woods Ave, Bergenfield, NJ 07621 (678) 574-2160 Advanced Tax Solutions, LLC 1603 Capitol Ave, Suite 310 A254, Cheyenne, WY 82001 (307) 414-1211 SimpleFilings 4049 Pennsylvania Ave. #100, Kansas City, MO 64111 (866) 659-5246 ExtensionTax.com/Thinktrade Inc. 233 Wilson Pike Cir, Suite 2B, Brentwood, TN 37027 (866) 245-3918