USTaxPenaltySaver4883C
High PriorityIdentity Verification - Phone Only
The IRS needs to verify your identity by phone before processing your return.
Response Deadline
30 days from notice date
Respond before this deadline to avoid additional penalties and enforcement action.
What This Notice Means
Letter 4883C requires phone verification of your identity. Unlike 5071C, this letter does not offer online verification. You must call the number provided in the letter to verify your identity before your return can be processed.
Why You May Have Received This
- 1Additional identity verification needed
- 2Could not verify online
- 3Complex verification scenario
Required Actions
1
Call the number on the letter
2
Have your tax return and prior year return ready
3
If you did not file, report identity theft
Consequences If Ignored
- Return will not be processed without verification
Tips & Best Practices
- Be patient - wait times can be long
- Best time to call is early morning
- Have supporting documents ready
Related Resources
Legal References
IRM 25.25
Ready to Take Action?
Our guided workflow will walk you through exactly what to do for this notice, step by step.