The penalty for filing taxes late is usually 5% of the unpaid taxes for each month or part of a month that a tax return is late, up to a maximum of 25% of the unpaid taxes
. If the return is more than 60 days late, the minimum penalty is $100 or 100% of the tax due with the return, whichever is less
. There is also a failure-to-pay penalty, which may apply if you owe money to the IRS and don't pay the taxes you owe by the due date
. The maximum total penalty for failure to file and pay is 47.5% (22.5% late filing and 25% late payment) of the tax
