IRS notice decoder
Identity and return verification
Every identity and return verification notice and letter we have decoded, by number. Open one for what it means, the date that counts and the first steps.
- CP01Ayour identity protection PIN for the year
A CP01A carries your identity protection PIN (IP PIN) for the year. Here is where it goes on your return and how to keep it safe.
- CP01Sthe IRS received your identity theft claim
A CP01S says the IRS received your identity theft claim and will send any refund after its review. Here is what to do meanwhile.
- 4883Cthe IRS wants you to verify your identity by phone
A 4883C means the IRS is holding a return filed under your SSN or ITIN until you verify your identity by calling the number on the letter.
- 5071Cthe IRS wants you to verify your identity and a return
A 5071C means a return was filed under your SSN or ITIN and the IRS wants you to confirm it's you, and your return, before it goes further.
- 5747Cthe IRS wants to verify your identity in person
A 5747C means the IRS needs you to verify your identity and a return, possibly in person at a Taxpayer Assistance Center, before it processes it.