IRS Audit: What Your CPA Does and How to Survive One in 2026

April 25, 2026

Receiving an IRS Audit Notice: The First 48 Hours

The envelope arrives with "Internal Revenue Service" in the return address. Most taxpayers' instinct is to panic. The correct response is far more procedural: read the notice carefully, understand what's being asked, and contact your CPA within 24-48 hours.

IRS audit notices are not indictments. The vast majority — over 70% — are simple correspondence audits that question a single line item and can be resolved by mailing documentation. Your CPA has handled many of these. Here's what happens next.

Types of IRS Audits and What Each Means

Correspondence Audit (CP2000, Letter 525, Letter 531)

The IRS mail-audits about 1 million returns per year. A CP2000 notice means the IRS received information from a third party (an employer, bank, or broker) that doesn't match your return. This is almost always mechanical — a 1099 you forgot to report, a W-2 from a short-term job, or investment dividends that slipped through.

Your CPA's role: review the discrepancy, compare it to your original return, either confirm the IRS is correct (you owe the additional tax plus interest) or prepare a written rebuttal with documentation showing the IRS's information is incorrect or already reported.

Office Audit

You've been asked to appear at an IRS office with specific records. This typically targets one to three areas — charitable deductions, home office, business expenses, or rental activity. Bring only what is specifically requested. Do not volunteer additional information.

Your CPA's role: prepare an organized audit binder for each challenged item, coach you on exactly what to say and what not to say, and ideally attend with you under a Form 2848 Power of Attorney. A CPA's presence changes the dynamic significantly — auditors generally conduct office audits more professionally when a credentialed representative is present.

Field Audit

An IRS Revenue Agent contacts you to schedule a visit to your business or home. Field audits are reserved for complex returns — typically businesses with significant revenue, multiple entities, or complex transactions. These are the audits where having specialized IRS representation is not optional.

Your CPA's role: manage all direct communication with the Revenue Agent, conduct a pre-audit assessment of your books and returns to identify vulnerabilities, prepare documentation packages, and negotiate scope limitations to prevent the audit from expanding beyond its original focus.

What Your CPA Does During an Audit

Initial Assessment

Your CPA reviews the audit notice, your original return, and all supporting documents to understand the IRS's position. They identify which items are defensible as-filed, which require additional documentation, and which may result in additional tax. This honest assessment is critical — knowing where you're vulnerable helps you manage risk and avoid surprises.

Power of Attorney (Form 2848)

Your CPA files Form 2848 to legally represent you before the IRS. With a valid POA, the IRS communicates directly with your CPA — not with you. This is an enormous advantage: your CPA knows what to say and what not to say. You, under stress, often volunteer information that extends the audit's scope.

Document Organization and Presentation

Auditors are more receptive to well-organized documentation. Your CPA prepares a structured response package: a cover letter summarizing the position, exhibits indexed and tabbed, and specific legal citations when applicable. An organized, professional response signals that the deductions were legitimate and documented from the start.

Negotiation and Resolution

Not every audit ends with the IRS's initial proposed adjustment. Your CPA can challenge disallowed deductions, negotiate the characterization of income, propose installment agreements if tax is owed, and request penalty abatement if this is your first compliance issue (IRS penalty relief for "first time abatement" can eliminate accuracy-related penalties of 20% of the underpayment).

Appeals

If you disagree with the audit findings, you have the right to appeal to the IRS Office of Appeals — an independent function that settles about 40% of disputed cases in the taxpayer's favor without litigation. Your CPA can file a protest letter and represent you through the appeals process.

What You Should and Shouldn't Do During an Audit

Do: Respond by the deadline stated in the notice. Provide exactly what is requested and nothing more. Keep copies of everything submitted. Communicate only through your CPA once they have a Power of Attorney on file.

Don't: Contact the IRS directly after your CPA is engaged. Volunteer information about years not under audit. Provide original documents (always send copies). Ignore the notice or miss deadlines — unanswered audits result in automatic assessments.

How to Minimize Your Audit Risk Going Forward

The best audit defense is a well-prepared return. Key risk reducers include: keeping contemporaneous records for business expenses (not reconstructed at tax time), maintaining separate business and personal accounts, reporting all income (the IRS receives copies of all 1099s and W-2s), claiming deductions you can document, and working with a CPA who prepares audit-quality documentation as a matter of standard practice.

If you've received an audit notice or want a CPA who prepares audit-ready returns, find a qualified CPA near you or browse by city: Los Angeles, Chicago, New York.