What it means
Income reported to the IRS by employers, banks or others doesn’t match your return. This is a proposal, not a bill.
What to do now
Compare their numbers with your records. You can agree, partly agree, or disagree with supporting documents. Only accept what is actually correct.
Deadline
Respond by the date on the notice, usually about 30 days. Always go by the date printed on your notice.
Last updated October 15, 2026.