Notice CP13 - No Change
IRC Section: N/A
Response Deadline: N/A
The IRS found a math error on your return, but it doesn't change anything. Your refund or balance due stays the same. This is purely informational — no action needed.
A CP13 is a math error notice where the IRS found a calculation error on your return but the correction does not change your tax liability. Your refund or balance due remains the same. The notice is purely informational.
Common Triggers
- Return selected for review
- Random selection
- Document matching
Resolution Steps
- Step 1: Keep this notice for your records
- Step 2: No action required
- Step 3: Contact us if you have questions
- Step 4: File this with your tax documents
- Step 5: Monitor for any future notices
Common Questions About CP13
- Do I need to do anything about a CP13?
- No. The correction doesn't change your tax. Keep the notice for your records in case you need to reference it later.
- Will a CP13 delay my refund?
- Generally no. Since the correction doesn't change your tax liability, your refund should be processed on the normal timeline.
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