does the 5% penalty apply to total return/tax if filed after april 15th? And is 8/15 the cutoff where they penalize you the max 25% even though that's 4 months?

How is the 5% penalty for filing late actually applied to the return?

1090

Level 15

Aug 30, 2025 8:06:34 AM

see IRS.gov for the penalty calculation formula