Question: what happens when you don't file your taxes?
Answer: Failure to File If you fail to file your tax return on time, the IRS can and will penalize you a late filing fee. ... The penalty maxes out at 25% of the taxes you owe. However, if you don't file within 60 days of the April due date, the minimum penalty is $210 or 100% of your unpaid tax, whichever is less.