Return was not filed
The filing deadline passed and the IRS has no processed return for the year.
IRS Notice CP3219N • Notice of Deficiency
Received an IRS CP3219N notice?
The IRS says it did not receive your tax return. It calculated proposed tax, penalties, and interest using wages and other income reported by employers, banks, and other third parties.
This is the 90-day letter. It gives you the right to challenge the proposed deficiency in the United States Tax Court by the exact deadline printed on the notice.
There is no fee to book the call. No documents are required when booking. Have the complete CP3219N and earlier IRS correspondence available during your call.
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Baytown-Based
Virtual Nationwide Service
What CP3219N Means
The IRS has issued a legal Notice of Deficiency
CP3219N is not a bill. It states the IRS determination based on a return it prepared from available information and explains the right to petition the Tax Court before assessment.
The IRS calculation may omit filing status benefits, dependents, deductions, credits, business expenses, basis, and other facts that would appear on a properly prepared return.
Why It Was Sent
The IRS does not show a processed return
Return was filed recently
Processing may not be complete. The IRS identifies a twelve-week window in its CP3219N guidance.
Return was mailed
The return may be delayed, rejected, misrouted, or not reflected on the account.
Filing requirement disputed
The taxpayer may believe no return was required and must address the facts with the IRS.
Income record is wrong
A W-2, 1099, or other item may be duplicated, inaccurate, or connected to identity theft.
IRS estimate is incomplete
The calculation may not include allowable expenses, basis, credits, dependents, or the correct filing status.
Response Choices
Choose based on the facts and the deadline
If you agree
Sign and return the notice response form. Review the proposed tax, penalties, interest, and payment options first.
If a return is required
Prepare and file an accurate original return using the notice instructions. Include all income and claim only supported deductions, expenses, and credits.
If the deadline is close
Do not assume the IRS will finish reviewing your response first. A petition may be necessary to preserve Tax Court review.
Records To Review
Have these available for the call
- Every page of CP3219N and Form 5564
- Account transcript for the tax year
- Any filed return and proof of filing
- Prior IRS nonfiler correspondence
- W-2s, 1099s, K-1s, and corrected forms
- Filing status and dependent records
- Business income and expense support
- Basis, credit, and deduction records
- Identity-theft records, if applicable
Protect the Deadline
An IRS response and a Tax Court petition are different actions
Filing the missing return asks the IRS to determine the tax from your actual return instead of its estimate. Filing a petition asks the Tax Court to review the proposed deficiency. Filing the return does not substitute for a petition and does not extend the petition deadline.
File the Return
Use an original return, not Form 1040-X
If no return was filed
Prepare a complete original return. Depending on the year, it may be eligible for electronic filing. Otherwise, use the response form and mailing instructions included with CP3219N.
If a joint return is filed
Both spouses must sign and date the return. Confirm that the names, taxpayer identification numbers, and tax year match the notice.
What Happens Next
The result depends on what you do before the deadline
IRS processes the return
The IRS may replace its proposed calculation with the tax shown after reviewing the filed return.
Tax Court petition filed
A timely petition preserves the right to have the proposed deficiency reviewed before assessment.
No timely petition
The IRS may assess the proposed tax and send a bill after the petition period expires.
Frequently Asked Questions
IRS CP3219N questions
Is CP3219N a bill?
No. It is a proposed deficiency and a legal notice of Tax Court rights. A bill generally follows if the tax is assessed.
How is CP3219N different from CP3219A?
CP3219N generally concerns a return the IRS says was not filed. CP3219A generally follows an unresolved income-matching adjustment to a filed return.
Can the IRS extend the 90 days?
No. Follow the exact petition deadline printed on the notice.
What if I filed within the last twelve weeks?
The IRS says no action may be needed, but filing the return does not extend the Tax Court petition deadline. Keep proof of filing and verify processing.
Is there a fee to book?
No. There is no fee to book the call. Professional work requires a separate written engagement.
Can TaxDecoders help?
Representation options may be discussed after the notice, deadline, filing history, income records, and required returns are reviewed.
Verified Resources
Official IRS information
This page was reviewed on July 27, 2026. Always follow the date and instructions printed on your actual notice.
Understanding CP3219N
Filing a Tax Court petition
90-day notice roadmap
Do not lose the right to challenge the proposed tax.
Book a call with TaxDecoders. Have the complete CP3219N, filing history, income documents, and any proof that a return was already filed available during the call.
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