IRS Letter 3219: What It Is and What You Should Do

08.20.2025

Receiving a notice from the IRS can be unsettling—especially when it involves a proposed tax deficiency. If you’ve received IRS Letter 3219, also known as the Notice of Deficiency, it’s critical that you understand what it means and take action promptly. This is a formal legal notice that grants you a short window to either resolve the issue or exercise your right to dispute the IRS’s position in court—before the government begins enforcement.

What Is IRS Letter 3219?

IRS Letter 3219 is a statutory notice of deficiency. It is sent after the IRS has determined that you owe additional taxes—usually following an audit or failure to file a return. The IRS uses information from third parties (such as employers, banks, or brokers) to calculate your tax liability, and if you do not respond to previous notices or disagree with their findings, Letter 3219 is issued.

This letter is the IRS’s final determination before assessing the additional tax. It also serves as your legal notice and opportunity to dispute the adjustment without first paying the amount due.

What Does Letter 3219 Include?

The notice outlines:

    • The proposed tax increase and an explanation of the adjustments made.
    • A breakdown of the amounts related to income, deductions, or credits that were changed.
    • A Form 5564 (Notice of Deficiency – Waiver) to sign if you agree with the changes.
    • Information on how to file a petition with the U.S. Tax Court if you disagree.

This letter is not a bill, but it is a legal trigger for the IRS to assess the tax if you do not respond within the time allowed.

When Do I Take Action?

From the date printed on the letter, you have 90 calendar days (or 150 days if you are outside the U.S.) to file a petition with the U.S. Tax Court. This is a strict legal deadline. The IRS will not grant extensions, and if you miss it, you will lose the right to dispute the tax deficiency in court.

Filing a petition suspends collection efforts until the case is resolved.

What Are My Options?

You have two options:

    1. If you agree with the IRS: Sign and return Form 5564. You can then pay the balance voluntarily or wait for the IRS to issue a bill.
    2. If you disagree with the IRS: File a petition in U.S. Tax Court before the deadline. This allows you to challenge the proposed liability without prepayment. For disputes under $50,000 per tax year, you may qualify for the simplified “Small Tax Case” process.

 

Be aware: Calling or mailing documents to the IRS does not preserve your rights. Only filing a formal petition will stop the IRS from proceeding.

Relevance for Taxpayers

For individuals and businesses alike, Letter 3219 can have serious financial and legal consequences. Ignoring it can lead to IRS assessments, collection actions, levies, liens, and garnishments. If you disagree with the IRS’s findings, this is your one chance to contest them before the agency begins collection.

Timely, informed action is not just recommended—it’s essential.

We Can Help!  

At JH Tax Law, we provide strategic legal representation for taxpayers facing IRS disputes, including notices of deficiency. You don’t have to face the IRS alone. Let us protect your rights and guide you through every step of the process.

Contact our office today for a confidential consultation and assert your position with clarity and legal authority.