Electronic Filing Identification Number (EFIN)
An EFIN is required to e-file more than 10 individual federal returns per calendar year using TaxACT Preparer's Editions.
To apply for an EFIN, use the IRS' e-Services – Online Tools for Tax Professionals. Learn more about becoming an authorized e-file provider.
IRS e-file help desk hours
Core hours (non-peak): Monday – Friday, 6:30 AM – 6 PM (CST)
Expanded service (January 14 – April 21, 2011):
Monday – Friday, 6:30 AM to 10 PM (CST)
Saturday, 7:30 AM to 4:00 PM (CST)
Preparer Tax Identification Number (PTIN)
Renew or obtain a PTIN before January 1. The PTIN renewal period begins in mid-October, and all PTINs expire on Dec. 31. Learn more about PTIN renewal at www.irs.gov/taxpros.
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