What are the EFIN requirements?
Effective in the tax year 2011, federal legislation mandates anyone filing more than 10 returns must electronically file. Before you can electronically file tax returns, you must apply to become an Authorized e-File Provider with the IRS and obtain an EFIN.
Once you have submitted your application to become an Authorized e-File Provider, you will need to send a fingerprint set to the IRS so they can administer a suitability check. This may include a credit check, a criminal background check, a tax compliance check and a check for previous non-compliance with IRS e-File requirements.