IRS Notice Center
Got an IRS letter? Find out what it really means.
Look up any IRS notice or letter code below for a plain-English explanation and the next steps to take.
Proposed Changes to Your Return
The IRS believes income reported by third parties doesn't match your return. You have 30 days to agree or dispute.
Balance Due Reminder
First reminder that you owe taxes. Interest and penalties continue to accrue until paid or resolved.
Intent to Levy State Refund
Final notice before the IRS can levy your state tax refund and begin searching for other assets.
Default on Installment Agreement
Your payment plan is in default. The IRS may terminate it and resume collection action.
Final Notice of Intent to Levy
The IRS intends to levy your wages, bank accounts, or property. You have 30 days to request a Collection Due Process hearing.
Audit Examination Report
Proposed audit adjustments. You have 30 days to agree, disagree, or request a meeting.
30-Day Letter
Formal audit results. You have 30 days to appeal before the case moves toward Tax Court.
Balance Due — Notice and Demand
The IRS has assessed a balance on your account. This is the first notice in the collection sequence — acting now prevents escalation.
Request for Additional Information
The IRS needs additional information to process your tax return. Respond within 20-30 days to avoid unfavorable adjustments.
Unfiled Tax Return Notice
The IRS has income records under your name but no filed return. File immediately or the IRS may file for you with no deductions or credits.
Processing Delay — We Need More Time
The IRS is still reviewing your case and needs additional time. Generally no action is required from you.
Changes to Your Tax Return — Amount Due
The IRS made changes to your tax return and your tax liability has changed. Review the adjustments and respond within 60 days if you disagree.
Second Balance Due Reminder
Second reminder that you owe taxes. After this notice, the IRS escalates to CP504 with authority to levy your state refund and file a tax lien.
Refund Applied to Balance Due
The IRS used all or part of your tax refund to pay an outstanding balance from another tax year or federal debt.
Business Balance Due Notice
Your business has an unpaid tax balance. If this involves payroll taxes, individual officers may face personal liability under IRC 6672.
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