How to Respond to an IRS Audit Notice in New York

Key Takeaways

Read the notice carefully to identify the audit type, tax year, specific items under review, and your response deadline.
Most IRS audit notices give you 30 days to respond. Missing this deadline triggers automatic adjustments that almost always increase your tax bill.
You have the right to professional representation, and your representative can handle the entire audit process without you being present.

Receiving an IRS audit notice causes immediate anxiety for most New York taxpayers. The letter arrives in an official envelope, uses formal language, and requests documentation you may not have readily available. The good news: an audit notice is not an accusation. It is a request to verify information on your tax return. How you respond in the first 30 days determines the trajectory of the entire audit. This guide walks you through every step, from opening the envelope to resolving the examination.

Jennifer O'Neill, EA, MBA, at New York IRS audit representation specialist in West Seneca, NY, has guided New York taxpayers through IRS audits for over 40 years. The steps below reflect the process she follows with her own clients.

Step 1: Read the Notice Carefully

The first step is reading every word on the notice. IRS audit letters contain specific information that determines your response strategy, and missing a detail can cost you.

Identify the Notice Type

The IRS uses different notice numbers for different types of examinations. Each notice type tells you what the IRS is questioning and how the audit will be conducted.

CP2000 (Underreporter Inquiry): This is technically not a formal audit. The IRS has received income documents (W-2s, 1099s, K-1s) from employers or financial institutions that do not match the income you reported. The CP2000 proposes additional tax based on the discrepancy. You must respond with an explanation: either the income was already reported on a different line, it was reported by the wrong entity, or you need to agree with the adjustment.

Letter 566 (Examination Appointment Letter): This is a formal audit notice. It schedules an office examination at a specific IRS location and date. The letter lists the items under review, such as Schedule C income, itemized deductions, or rental property expenses. You have the right to reschedule the appointment and to have a representative attend instead of you.

Letter 950 (30-Day Letter): This follows an examination and proposes specific changes to your return. You have 30 days to agree, partially agree, or request a meeting with the examiner's supervisor.

Letter 531 (Notice of Deficiency / 90-Day Letter): This is the IRS's final determination before assessment. You have 90 days to petition the U.S. Tax Court if you disagree. Once this deadline passes, the IRS assesses the additional tax and begins collection.

Identify the Tax Year and Items Under Review

The notice specifies which tax year is being examined and which line items or schedules the IRS wants to verify. This information narrows the scope of your response. If the IRS is questioning your charitable deductions for 2023, you do not need to provide documentation for your business income or any other tax year unless specifically requested.

Check for Accuracy

Verify that the notice is addressed to you, references the correct Social Security number, and pertains to a return you actually filed. Scam letters impersonating the IRS are common. The IRS always sends initial audit correspondence by regular mail, never by email, text message, or phone call.

Step 2: Note the Deadline

Every IRS audit notice includes a response deadline. This date is not a suggestion. Missing it triggers automatic consequences.

For CP2000 notices, the standard response window is 30 days. If you do not respond, the IRS assumes you agree with the proposed changes and assesses the additional tax, plus penalties and interest.

For Letter 566 (examination appointments), the IRS sets a specific date. If you need more time, call the number on the letter to reschedule before the appointment date. Do not simply fail to appear.

For 30-Day Letters, the deadline is exactly 30 days from the date on the letter (not the date you received it). If you miss this deadline, the IRS issues a Notice of Deficiency, which starts the 90-day Tax Court clock.

Mark the deadline immediately. Count the days from the date printed on the letter. Factor in mail delivery time: you may have already lost 5-7 days by the time the letter reaches you. If the deadline is tight, contact the IRS or have your representative call to request an extension. Extensions are usually granted for the first request if made before the deadline.

For New York taxpayers, keep in mind that a federal audit adjustment often triggers a separate NY State audit. You may need to track deadlines for both agencies simultaneously. Working with a representative who handles both IRS audit defense and NY State audits prevents either deadline from slipping.

Step 3: Gather the Requested Documents

The audit notice specifies exactly which documents the IRS wants to see. Gather those documents and only those documents.

Common IRS Document Requests

Income verification: W-2s, 1099s (all types), K-1s from partnerships or S-corporations, brokerage statements, rental income records, and bank statements showing deposits.

Deduction substantiation: Receipts for charitable contributions, medical expenses, mortgage interest statements (Form 1098), property tax bills, state and local tax payments, business expenses, and education costs.

Business records (Schedule C): Profit and loss statements, bank statements for business accounts, expense receipts organized by category, mileage logs, home office measurements and calculations, contractor payments (1099-NEC forms), and inventory records.

Investment records: Purchase and sale confirmations, cost basis documentation, brokerage 1099-B statements, and records of inherited or gifted assets.

How to Organize Your Response

Create a separate folder or envelope for each item the IRS is questioning. Label each folder with the corresponding line item or schedule from your return. Inside each folder, arrange documents chronologically. Include a cover letter or summary sheet listing each document and explaining how it supports the amount you claimed.

This level of organization is not optional for good outcomes. Examiners review dozens of cases simultaneously. A well-organized response gets reviewed quickly and favorably. A box of unsorted receipts gets set aside and eventually results in a default assessment.

What If You Cannot Find the Documents?

If you cannot locate original receipts, look for alternatives. Bank statements showing payments to the vendor or organization can serve as supporting evidence. Credit card statements provide similar documentation. Canceled checks (images available from your bank) show payment amounts and dates.

For charitable contributions, contact the organization directly and request a duplicate receipt or acknowledgment letter. For medical expenses, request billing summaries from your healthcare providers. For mortgage interest, your lender can provide duplicate 1098 forms.

If no documentation exists at all for a deduction you claimed, discuss this with your representative before responding. In some cases, the Cohan rule allows estimated deductions when records are lost through no fault of the taxpayer, but this argument requires careful framing and is not guaranteed.

Step 4: Decide on Representation

You have the right to represent yourself in an IRS audit. You also have the right to hire a professional to handle it for you. For most New York taxpayers, professional representation produces better outcomes.

Who Can Represent You

Three categories of professionals can represent you before the IRS with unlimited practice rights:

Enrolled Agents (EAs) are federally licensed tax specialists. They pass a rigorous three-part IRS examination covering individual tax, business tax, and representation/ethics. EAs specialize exclusively in tax, which means they handle audit situations regularly. For most audits, an enrolled agent is the most cost-effective choice with the highest level of tax-specific expertise.

Certified Public Accountants (CPAs) are state-licensed accounting professionals. Their expertise spans financial reporting, bookkeeping, and tax. A CPA who specializes in tax and regularly handles audits can be an excellent representative, but not all CPAs have audit experience.

Tax Attorneys bring legal expertise and attorney-client privilege. If your audit involves potential fraud allegations, criminal referral risk, or complex legal arguments, a tax attorney may be the right choice. For standard civil audits, an attorney is typically more expensive without providing additional benefit over an EA or CPA.

For a detailed comparison, see our guide to IRS audit representation in New York.

When to Hire a Representative

Hire a representative immediately if: the audit involves multiple years, the proposed additional tax exceeds $5,000, your records are incomplete, you have unfiled returns for other years, the audit involves business income, or you are dealing with a residency dispute. For simple CP2000 notices involving a single item and a small amount, some taxpayers handle the response themselves.

Jennifer O'Neill at IRS Help Inc. has represented New York taxpayers in every type of IRS audit since 1982. Her firm handles both federal and state cases, which is critical for New York taxpayers who often face examinations from both agencies. Call 1-800-477-4357 to evaluate whether your notice warrants professional representation.

Step 5: Respond by the Deadline

Once you have gathered your documents and decided on representation (or self-representation), submit your response before the deadline.

How to Submit Your Response

For correspondence audits and CP2000 notices: Mail your response to the address on the notice using certified mail with return receipt requested. This provides proof that you responded and the date the IRS received it. Keep copies of everything you send.

For office audits: Your representative contacts the examiner to confirm the appointment, request rescheduling if needed, and clarify which documents to bring. If a representative is handling the audit, they file Form 2848 (Power of Attorney and Declaration of Representative) so the IRS communicates directly with them instead of you.

For field audits: Your representative coordinates with the revenue agent to set the date, time, and location of the examination. The representative prepares your records in advance, anticipates the examiner's questions, and manages the entire on-site review.

What to Include in Your Response

Include a cover letter referencing the notice number, tax year, and your Social Security number. Attach the requested documents in an organized format. If you disagree with a proposed adjustment, include a clear explanation with supporting evidence. Do not include emotional arguments, personal hardship stories, or complaints about the IRS. Examiners respond to documentation, not narratives.

Extensions and Postponements

If you cannot meet the deadline, contact the IRS before it expires. For correspondence audits, call the number on the notice and request additional time. Most examiners grant a 30-day extension on the first request. For office and field audits, your representative can negotiate scheduling changes directly with the assigned examiner.

Step 6: Attend the Appointment or Submit Documents

For correspondence audits, this step is straightforward: you mail the documents and wait for the examiner's response. For office and field audits, the examination is more involved.

Office Audit Procedures

Your representative arrives at the IRS office with your documents organized by issue. The examiner reviews each item, asks questions, and may request additional documentation. A typical office audit takes 2-4 hours for a single tax year. The examiner may resolve all issues in one meeting or schedule a follow-up if additional records are needed.

You do not have to attend the office audit yourself. If your representative has a valid Power of Attorney on file, they handle the entire meeting. This is usually preferable, as trained representatives know what to say (and what not to say) during an examination.

Field Audit Procedures

A revenue agent visits your home or business to review records. For business audits, the agent may tour your facilities, observe operations, and examine physical records. Your representative should be present during the entire visit. The representative can set ground rules for the examination: which areas the agent can access, which questions you will answer directly versus through counsel, and how follow-up requests will be handled.

Field audits often span multiple visits over several months. After each visit, the agent may submit Information Document Requests (IDRs) asking for additional records. Your representative reviews each IDR, provides only what is required, and pushes back on requests that exceed the scope of the audit.

What Not to Do During the Audit

Do not volunteer information the examiner did not ask for. Every additional piece of information you provide is a potential new line of inquiry. If the examiner asks about your charitable deductions, do not mention your home office. If they ask about 2023, do not discuss 2022.

Do not provide original documents. Provide copies only. If the examiner needs to keep records for review, copies prevent the loss of irreplaceable originals.

Do not argue with the examiner. If you disagree with a line of questioning, your representative handles the pushback professionally. Confrontational behavior does not change audit outcomes, but it can damage your representative's ability to negotiate.

Step 7: Review the Findings

After completing the examination, the IRS issues a report detailing its findings. This report shows the proposed changes to your return, the additional tax owed (if any), and any penalties and interest.

Understanding the Examination Report

The report lists each item the IRS reviewed and whether it was accepted as filed, adjusted, or disallowed. For each adjustment, the report shows the amount you claimed, the amount the IRS is allowing, and the resulting change in taxable income.

The report also calculates penalties. The most common audit penalty is the accuracy-related penalty (20% of the underpayment caused by negligence or substantial understatement). If your underpayment exceeds the greater of $5,000 or 10% of the tax shown on your return, the substantial understatement penalty applies automatically unless you had reasonable cause.

Interest accrues from the original due date of the return (typically April 15) through the date of payment. Unlike penalties, interest cannot be abated except in narrow circumstances involving IRS error or delay.

Three Possible Outcomes

No change: The IRS accepts your return as filed. You owe nothing additional, and the audit is closed. This happens more often than most people expect, particularly when taxpayers provide thorough documentation.

Agreed: You agree with the IRS's proposed changes. You sign the examination report and either pay the additional tax or set up a payment arrangement. The case closes.

Disagreed: You do not agree with some or all of the proposed changes. You have the right to request a meeting with the examiner's supervisor, or you can proceed directly to an appeal.

Step 8: Appeal if Needed

If you disagree with the audit findings, you have the right to appeal. The IRS appeals process is designed to resolve disputes without going to court.

Filing an Appeal

For proposed adjustments under $25,000 (total tax, penalties, and interest for all years combined), you can file Form 12203 (Request for Appeals Review). This is a simplified, one-page form that initiates the appeals process.

For larger amounts, you must file a formal protest letter. The letter must include your name, address, and Social Security number, a statement that you want to appeal, the tax year(s) involved, a list of each item you disagree with, the facts supporting your position, and the law or authority on which you rely.

The Appeals Conference

IRS Appeals is independent from the examination division. Appeals officers have settlement authority that examiners do not. They evaluate the "hazards of litigation," meaning they consider the likelihood that the IRS would win if the case went to Tax Court. This often results in compromises that reduce the proposed tax.

Appeals conferences are informal. Your representative presents your case, the appeals officer asks questions, and both sides discuss potential resolutions. Many cases settle during the appeals process without ever reaching Tax Court.

Tax Court

If appeals does not resolve the dispute, or if you receive a Notice of Deficiency (90-Day Letter), you can petition the U.S. Tax Court. The Tax Court hears cases in multiple locations across New York, including New York City, Buffalo, and Albany. You can petition Tax Court without paying the disputed tax first, which is a significant advantage over other courts.

For a complete overview of the appeals process, see our guide to IRS audit appeals in New York.

New York-Specific Considerations

New York taxpayers face an additional layer of complexity: state tax implications of a federal audit.

When the IRS adjusts your federal return, New York State law requires you to report the changes to the Department of Taxation and Finance within 90 days. If the federal adjustment increases your New York adjusted gross income, you will owe additional state tax. If you were a New York City resident during the tax year, you may owe additional city tax as well.

Failure to report federal changes to New York within 90 days triggers additional state penalties and extends the state's statute of limitations. Many taxpayers overlook this requirement and are surprised by a state tax bill months after their federal audit concludes.

Working with a representative who handles both federal and state cases prevents this gap. Jennifer O'Neill at IRS Help Inc. coordinates federal audit responses with New York State reporting requirements as a standard part of her practice. Understanding your taxpayer rights at both the federal and state level is essential for a complete defense.

Common Mistakes New York Taxpayers Make

Ignoring the notice. The IRS does not forget. Ignoring an audit notice results in an automatic assessment based on the IRS's calculations, which are almost always higher than what you would owe with proper documentation. The IRS can then begin collection: filing liens, levying bank accounts, and garnishing wages.

Responding without reviewing the notice carefully. Sending documents for the wrong tax year, addressing the wrong issue, or missing the specific items requested wastes time and can extend the audit.

Providing too much information. Volunteering records the IRS did not request opens new lines of inquiry. If the examiner is looking at your Schedule A deductions, handing over your entire filing cabinet gives them access to Schedule C, investments, and other areas they were not examining.

Waiting until the last minute. Rushing a response leads to incomplete documentation, disorganized submissions, and missed opportunities to present your case effectively. Start gathering documents within a week of receiving the notice.

Handling it alone when the stakes are high. Self-representation works for simple, small-dollar correspondence audits. For anything involving business income, multiple years, residency questions, or proposed assessments over $5,000, professional representation typically pays for itself through reduced assessments and avoided penalties.

Frequently Asked Questions

What do I do when I get an IRS audit notice?

Read it carefully. Identify the notice type, tax year, items being questioned, and your response deadline. Do not call the IRS before understanding what the notice says. Contact a tax professional to evaluate whether you need representation. Begin gathering the specific documents the notice requests.

How long do I have to respond to an IRS audit notice?

Most audit notices give you 30 days from the date printed on the letter. CP2000 notices and 30-Day Letters both carry 30-day response windows. Notices of Deficiency (90-Day Letters) give you 90 days to petition Tax Court. Account for mail delivery time, as you may have already lost several days by the time the letter arrives.

Can I ignore an IRS audit notice?

No. Ignoring the notice does not make the audit go away. The IRS will assess additional tax based on its own calculations, which are almost always higher than what you would owe with documentation. The IRS then begins collection: filing liens, levying bank accounts, and garnishing wages. Once the assessment is final, your options to challenge it are severely limited.

Can I get an extension on the audit deadline?

Yes. Contact the IRS before the deadline expires and request additional time. For correspondence audits, call the number on the notice. For office or field audits, your representative can negotiate scheduling changes directly with the examiner. First-time extension requests are usually granted.

Should I hire someone to handle my audit?

For proposed adjustments over $5,000, audits involving business income, multiple years under review, or residency disputes, professional representation is strongly recommended. An enrolled agent, CPA, or tax attorney who handles audits regularly will produce a better outcome than self-representation in these situations.

What if I cannot find my records?

Look for alternative documentation: bank statements, credit card records, canceled checks, or duplicate receipts from vendors and organizations. Discuss missing records with your representative before responding. In limited circumstances, estimated deductions may be allowed under the Cohan rule, but this requires careful legal argumentation.

Will a federal audit trigger a New York State audit?

It often does. When the IRS adjusts your federal return, it shares the information with the NY Department of Taxation and Finance. New York State then recalculates your state tax based on the federal changes. You are required to report federal changes to New York within 90 days of the final federal determination.

Received an IRS audit notice in New York? IRS audit defense expert in Buffalo, NY, at IRS Help Inc. in West Seneca has over 40 years of experience guiding New York taxpayers through the audit response process. Call 1-800-477-4357 for immediate help with your notice.