What to Do When You Receive an IRS Notice: A Step-by-Step Guide

Few pieces of mail cause as much instant anxiety as an envelope from the Internal Revenue Service. For business owners and families across Long Island, Nassau County, and the tri-state area, the first reaction is usually fear. Take a breath. The vast majority of IRS notices are routine, and many are resolved with a single letter or phone call.

There are really only two ways to handle an IRS notice incorrectly: panic and overreact, or ignore it and hope it disappears. Both make the situation worse. Below is the calm, methodical process we walk our clients through every tax season.

Step 1: Read the Notice and Find the Notice Number

Every IRS notice has a code in the upper-right or lower-right corner. For notices it usually begins with CP (Computer Paragraph), and for letters it begins with LTR followed by a number. That code tells you exactly what the IRS is asking for, and you can look it up on IRS.gov.

Before you do anything else, find three things on the page:

• The notice or letter number (for example, CP2000 or CP14), which tells you what type of issue this is
• The tax year the notice refers to, since it is often not the most recent year you filed
• The response deadline, which is the single most important date on the document

Read the notice in full, slowly, twice. The IRS states the issue, the amount in question, and what action (if any) you need to take. Many notices are purely informational and require nothing from you at all.

Step 2: Understand the Common Notice Types

While there are dozens of notice codes, a handful account for most of the mail taxpayers actually receive. Knowing what you are looking at removes most of the fear.

A CP2000 in particular alarms people because it shows a large proposed balance. Remember that it is a proposal based on automated matching. If you have documentation showing the income was already reported or does not apply, you have every right to dispute it.

Step 3: What NOT to Do

How you react in the first few days matters as much as the response itself. Avoid these common mistakes.

• Do not call back any phone number except the one printed on the IRS notice. Scammers impersonate the IRS by phone, text, and email constantly. The genuine IRS initiates contact about a balance by mail, not with a threatening phone call demanding gift cards or wire transfers.
• Do not throw the envelope away. Keep the notice, the envelope, and any enclosed response form together.
• Do not assume the IRS is always right. Automated notices are frequently based on incomplete information.

Step 4: Respond and Gather Your Documentation

Once you understand the notice, decide whether you agree or disagree, then respond in writing by the deadline. If you agree, follow the payment or correction instructions provided. If you disagree, send a clear written explanation along with copies (never originals) of supporting documents.

Helpful documentation often includes your filed return for the year in question, W-2s and 1099s, brokerage and bank statements, and receipts that substantiate deductions. Pull your relevant records before you call or write so you can speak to specifics rather than guesses.

If you cannot meet the deadline, the IRS will often grant additional time if you call the number on the notice and request it. Document who you spoke with and when. When sending a response by mail, use certified mail with return receipt so you have proof the IRS received it.

Step 5: When to Bring in a CPA to Represent You

Plenty of simple notices can be handled on your own. But certain situations call for professional representation, and the cost of getting it wrong far outweighs the fee. Consider working with a CPA when:

• The notice is an audit or examination letter rather than a routine adjustment
• The proposed balance is large or you genuinely cannot tell whether it is correct
• The issue spans multiple tax years or involves business income
• You owe a balance you cannot pay and need an installment agreement or offer in compromise

A CPA can communicate with the IRS on your behalf, which means you do not have to navigate the phone system or hearings alone. At JRH & Associates we deal with the IRS on behalf of clients every week, and resolving a notice professionally is often faster and less stressful than going it alone. Our IRS tax problem resolution service is built for exactly these situations.

Step 6: New York State Notices Work the Same Way

The IRS is not the only agency that sends letters. The New York State Department of Taxation and Finance issues its own notices, and they deserve the same attention. New York is known for aggressive enforcement, particularly around residency, sales tax, and income that may have been earned in the state.

The process is identical: read it carefully, identify the tax type and deadline, gather your records, and respond on time. A New York notice can arrive even when your federal return is in perfect order, because the state cross-checks its own data. If you receive a notice from both the IRS and New York State for the same year, treat each separately and respond to each by its own deadline.

This article is for informational purposes only and does not constitute tax or legal advice. Every notice and situation is different. Consult a qualified CPA or tax professional before responding to any IRS or state tax notice.