Moderate Risk
Understanding IRS Notice CP54B:
Taxpayer Identification Number Mismatch
and How to Respond
Last Verified:
The Raw Code: What CP54B Actually Says
The name or Social Security Number on your return does not match SSA records. Your refund and credits may be delayed until this is resolved.
The Detangler™ — Plain English
Identity crisis — the name or SSN on your return doesn't match what Social Security has on file. This is a major red flag for identity theft. Or a typo. Either way, fix it NOW or your refund is stuck in limbo.
What You Must Do Now
Contact the SSA to verify your records. Respond to the IRS with corrected information.
Get Free EA AssessmentFrequently Asked Questions
What is IRS Notice CP54B?
The name or Social Security Number on your return does not match SSA records. Your refund and credits may be delayed until this is resolved.
What should I do when I receive CP54B?
Contact the SSA to verify your records. Respond to the IRS with corrected information.
How serious is IRS Notice CP54B?
Moderate Risk. Review and respond promptly to avoid escalation.