IRS Notice CP87A: Dependent or SSN claimed on another return
Quick answerYou and someone else both claimed the same dependent or Social Security number.
Letter / noticeCP87A
MeaningDependent or SSN claimed on another return
Action needed?Yes — see steps
What happens next
If only one person is entitled to the claim, the other should amend.
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What you should do
- Check who is entitled to claim the dependent
- Amend your return if it shouldn't have been you
- Keep proof (school, medical, lease records) if it was you
Scam check: the IRS first contacts you by mail. Use only the phone numbers printed on your letter or on IRS.gov — never ones from a text, email or unofficial site.
Frequently asked questions
What does IRS Notice CP87A mean?
You and someone else both claimed the same dependent or Social Security number.
What should I do?
Check who is entitled to claim the dependent Amend your return if it shouldn't have been you Keep proof (school, medical, lease records) if it was you
How long does it take?
If only one person is entitled to the claim, the other should amend.
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.