IRS code 420: Examination (audit) of the return
Quick answerYour return has been selected for examination. This doesn't always mean a full audit — some are closed without contact.
Transcript code420
MeaningExamination (audit) of the return
Action needed?Yes — see steps
What happens next
If the IRS needs something from you, a letter arrives by mail.
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What you should do
- Watch your mail
- Gather records for the year
- Respond by the date on any letter
Frequently asked questions
What does IRS code 420 mean?
Your return has been selected for examination. This doesn't always mean a full audit — some are closed without contact.
What should I do?
Watch your mail Gather records for the year Respond by the date on any letter
How long does it take?
If the IRS needs something from you, a letter arrives by mail.
Sources
- IRS: Understanding your IRS notice or letter
- IRS: Get Transcript
- Taxpayer Advocate Service (independent help inside the IRS)
Written by the editorial team and checked against the official sources above. See our editorial policy.
By the TranscriptCodes Editorial Team · Last reviewed 2026-11-12.