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Responding to a CP3219A: Why you should not ignore it

On Behalf of | May 24, 2025 | Tax Controversies

Getting any letter from the IRS can feel overwhelming. When that letter is a CP3219A, it is especially serious. This notice, also called a Statutory Notice of Deficiency, means the IRS plans to assess additional taxes, and they are giving you a limited chance to challenge it.

The IRS usually sends this letter when they believe your tax return is wrong or missing key information. They may think you did not report income or they made changes based on third-party forms.

Do not panic—but do not wait either

One of the most important things to know is that you only have 90 days to respond to a CP3219A. If you miss this deadline, the IRS will move forward and assess the extra tax they believe you owe. You cannot fight the extra tax in tax court without paying first.

If you get a CP3219A, you should do the following:

  • Read it carefully: The letter will explain what the IRS changed and why. Look at the documents they used and compare them to your records.
  • Gather your paperwork: Find the tax documents that support your original return. It could include W-2s, 1099s or receipts for deductions or credits.
  • Correct any mistakes: If you see an error on your return, you can agree with the IRS by signing the response form. If you disagree, you can take the case to Tax Court.
  • Do not send an amended return: At this stage, the IRS will not accept one. Instead, you should file a petition with the U.S. Tax Court before the 90-day deadline.
  • Ask for help: These cases are tricky. A tax professional or legal team can help you understand the notice and prepare your response.

If you do not agree with the IRS changes notated in the CP3219A, do not wait. It is wise to seek the feedback of tax, financial or legal professionals to guide you through the process and protect your rights.