The short answer
Find out exactly what you owe. Sign in to your IRS Online Account or read your notice. Then file any missing returns and pick a way to pay. Your Online Account shows your balance and payment history. Account transcripts show each tax year.
Don't ignore letters. Each one has a due date, and some give you rights that end after 30 days.
- Check your balance online
- File any missing returns
- Pay in full, or apply for a plan
- Ask about penalty relief
- Get help from a licensed pro if it is complex