Notice CP2100 - Backup Withholding

Type: Backup Withholding | Level: medium

IRC Section: IRC § 3406

Response Deadline: N/A

This notice informs you that backup withholding was applied to your income because you didn't provide a correct TIN.

Common Triggers

Incorrect TIN
No TIN provided
IRS notification of incorrect TIN

Resolution Steps

Step 1: Review the notice and backup withholding amount
Step 2: Ensure your TIN is correct on all accounts
Step 3: File Form W-9 with payers
Step 4: Contact us if withholding was incorrect
Step 5: Keep this notice for your records

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