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There’s Levels to This: Understanding the Severity Level of Your IRS Notice

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Have you ever received a nasty gram from the IRS? What was your first reaction? Panic? Despair? Nonchalance? Toss it in the trash?

Opening a letter with the IRS return address can feel intimidating. However, not every piece of government mail carries the same weight. The IRS sends notices through an automated system using specific codes—usually located in the top-right corner of the letter—that indicate the severity of your tax situation.

Understanding the “severity hierarchy” of these notices can mean the difference between making a simple phone call to clear up a math error and facing frozen bank accounts.

The 4 Severity Levels of IRS Notices

IRS notices generally fall into four tiers of urgency. Below are the tiers, associated letter codes, and the message intended for you.

Severity Level

Risk Profile

What It Means

Letter Code

Level 1: Informational & Awareness

Low

The IRS adjusted your return due to a processing or math error.

CP11

Level 2: Discrepancy & Inquiries

Moderate

Third-party data does not match what you filed; an inquiry is open.

CP2000

Level 3: Formal Bill & Demand

High

The IRS has finalized a balance due; the official collections clock starts.

CP14

Level 4: Enforcement & Intent to Levy

Critical

Final warning before the IRS garnishes wages, levies bank accounts, and/or seizes property.

LT11

Decoding the Critical Notices

The associated letter codes listed in the table are some of the most common notices sent to taxpayers. There are a myriad of letter codes sent to taxpayers dependent upon various considerations, including your tax classification (personal or business), number of attempts to contact, information listed on your tax return.

Notices with low to moderate risk profiles can usually be resolved with a written response or a call to the IRS. Notices with high to critical risk profiles should be handled with extreme caution, sending written communications via USPS Certified Mail with a Return Receipt as well as fax responses to the numbers listed on the notices. Calls to the IRS are also necessary in this stage to ensure agents notate the most up-to-date information for your account. In the world of tax resolution, we stand on the premise that “Documentation Beats Conversation.”

The Golden Rule of IRS Mail

Always open a letter sent from the IRS no matter how frightening it may feel. Never ignore a deadline on the assumption that the IRS will “forget.” The clock is always ticking at the IRS offices. Missing a deadline moves your file automatically to the next tier of severity, stripping away valuable taxpayer protections along the way.

You do not have to face the IRS alone. MM Johnson CPA specializes in professional tax resolution, helping individuals and businesses intercept IRS collections, dispute incorrect calculations, and build concrete compliance action plans. If you received a notice and are not sure how to move forward, contact our firm today for support.

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