You open your mailbox and there it is — a letter from the Internal Revenue Service. Your stomach drops. An IRS audit notice is one of the most stressful pieces of mail a taxpayer can receive, and the instinct to ignore it, panic, or call the first tax professional you find online can all lead you in the wrong direction.

The good news: receiving an audit notice does not mean you owe money. It does not mean you did anything wrong. It means the IRS has questions — and how you respond to those questions will determine the outcome.

Here is exactly what to do in the first 48 hours.

Step 1: Read the Notice Carefully — All of It

Not all IRS notices are created equal. The type of notice you received determines everything: the timeline, the stakes, and the right response strategy.

The most common audit types are:

• Correspondence audit — The IRS requests documentation by mail. This is the most common and least severe type.
• Office audit — You are asked to bring documents to a local IRS office.
• Field audit — An IRS agent comes to your home or business. This is the most serious type.
• CP2000 notice — The IRS believes there is a discrepancy between your return and information reported by third parties (employers, banks, brokers).

Look for the notice number in the upper right corner of the letter. Common ones include CP2000, CP3219A (Statutory Notice of Deficiency), Letter 2205, and Letter 3572. Each has a different meaning and a different required response.

Most importantly: note the response deadline. IRS deadlines are firm. Missing one can cost you the right to appeal.

Step 2: Do Not Respond Immediately — But Do Not Wait Either

This sounds contradictory, but it is not. You should not fire off a response in the first hour out of panic. But you also cannot sit on the notice for weeks.

The ideal window is 3 to 7 days — enough time to gather your thoughts, locate relevant documents, and ideally consult a tax professional before you put anything in writing.

Why does this matter? Because anything you say to the IRS — in writing or in person — can be used against you. A hasty, poorly worded response can expand the scope of an audit from one year to three, or from one issue to several.

Step 3: Gather Your Documentation

Before you do anything else, pull together the records related to the tax year in question. Common items the IRS requests include:

• W-2s, 1099s, and other income statements
• Bank and brokerage statements
• Receipts for deductions claimed (charitable contributions, business expenses, home office, vehicle use)
• Mortgage interest statements (Form 1098)
• Records of any large cash transactions
• Prior-year returns for context

Organize these chronologically and keep originals separate from copies. You will provide copies to the IRS — never originals.

If you cannot locate certain records, do not panic. There are legitimate ways to reconstruct documentation, and a qualified tax professional can help you do this properly.

Step 4: Do Not Contact the IRS Directly — Yet

This is the step most people get wrong. The instinct is to call the IRS, explain yourself, and make it go away. Resist this instinct.

IRS agents are trained interviewers. They are not adversarial, but they are thorough — and an offhand comment made in an attempt to be helpful can open new lines of inquiry you did not anticipate.

If you have a tax professional, let them make the first contact. If you do not have one yet, this is the moment to get one.

Step 5: Understand Your Rights as a Taxpayer

The IRS Taxpayer Bill of Rights gives you specific protections that many taxpayers do not know they have. These include:

• The right to be informed — You have the right to know why the IRS is asking for information and how it will be used.
• The right to representation — You can have a CPA, Enrolled Agent, or tax attorney represent you before the IRS. You do not have to face an audit alone.
• The right to appeal — If you disagree with an IRS finding, you have the right to appeal within the IRS and, if necessary, in Tax Court.
• The right to finality — The IRS generally has three years from the date you filed your return to audit it (six years if they believe you underreported income by more than 25%).

Knowing your rights is not about being combative. It is about making sure the process is fair.

Step 6: Assess Whether You Need Professional Representation

Not every audit requires professional help. A simple correspondence audit requesting one document — say, proof of a charitable donation — may be something you can handle yourself.

But in most cases, professional representation is worth the investment. Here is why:

Scope control. A skilled representative knows how to respond to the IRS's specific questions without volunteering information that could expand the audit.

Documentation strategy. Knowing which documents to provide — and how to present them — is a skill that takes years to develop.

Negotiation. If the audit results in a proposed tax increase, a professional can negotiate penalties, interest, and payment terms on your behalf.

Appeals. If you disagree with the outcome, a professional can guide you through the appeals process with a much higher chance of success.

The credentials to look for: CPA (Certified Public Accountant), EA (IRS Enrolled Agent), or JD/LL.M in tax law. All three are authorized to represent taxpayers before the IRS. A firm that holds all three — like ours — can handle every dimension of your case.

Step 7: Respond Within the Deadline

Once you have gathered your documentation and, ideally, consulted a professional, respond to the IRS by the stated deadline. If you need more time, you can request an extension — but do so in writing before the deadline, not after.

Your response should be:

• Specific — Address exactly what was asked. Do not volunteer additional information.
• Documented — Every claim you make should be supported by a document.
• Professional in tone — Factual, not emotional.

If you are working with a representative, they will handle this communication on your behalf.

What Happens After You Respond?

The IRS will review your response and either:

1. Accept it — The audit is closed with no change to your return.
2. Request additional information — The process continues.
3. Issue a proposed adjustment — The IRS believes you owe additional tax. You can agree, negotiate, or appeal.

Most audits are resolved at the correspondence level. Field audits and office audits take longer and often involve multiple rounds of documentation requests.

The Bottom Line

An IRS audit notice is not a verdict. It is the beginning of a process — one that you can navigate successfully with the right preparation and the right team.

The worst thing you can do is ignore it. The second worst thing is to respond without a strategy.

If you have received an IRS notice and are not sure what to do next, book your free 30-minute consultation with our team. We have been representing taxpayers before the IRS for 39 years, and we can tell you exactly where you stand — at no cost and no obligation.