ATTN: Software Developers, Return Transmitters and Authorized IRS e-file Providers/EROs

IRS has posted Frequently Asked Questions (FAQs) to help Authorized IRS e-file Providers (Providers) understand the correct usage of Electronic Filing Identification Numbers (EFINs).  Providers must ensure that they are using their correct EFIN.

When a Provider is doing business with another Provider, you must check to see that the other Provider also has a valid EFIN.