*The following article was updated in February 2022*

What To Do If the IRS is Auditing Me for Underreported Income

Facing an IRS audit for underreported income? Learn what steps to take when receiving a CP2000 notice, how to prepare documentation, and why professional guidance is essential for California taxpayers.

Tax season is officially upon us! It’s this time of year that I often receive panicked questions from clients telling me they’re being audited by the Internal Revenue Service (IRS) because they underreported their income. This is never a fun situation for anyone. But there are ways to handle the situation so it’s not too overwhelming. Here’s what you should do if the IRS is auditing you for underreported income.

Understanding IRS Audits for Underreported Income

The first thing that happens in the audit process is you will receive a letter from the IRS. Make sure this is from the IRS and not another agency, such as the Franchise Tax Board, Employment Development Department (EDD), or the California Department of Tax and Fee Administration (CDTFA).


Identifying CP2000 Notices vs. Formal Audit Notifications

If the IRS believes you underreported income on your tax return, you will receive an underreporting notice, generally called a CP2000 notice. While this notice is technically not a notice of audit, it often serves the same purpose. The IRS sends this out if there is a discrepancy or mismatch between the income you reported on your tax return and the information your employer or contractor (if you’re an independent contractor) provided on its Form 1099 or W-2.

How to Respond to an IRS Underreported Income Notice

The CP2000 notice includes taxes and possible penalties that you owe for not reporting income on your tax return. If you receive a notice, it’s important you respond by the IRS deadline. That being said, it’s important to consult with a tax professional who has experience with underreported income before automatically complying with the IRS. There is a chance you may not owe money, or even the full amount indicated. But only a tax professional can determine this for you. For example, if a piece of property is sold, the income will generally be reported to the IRS. However, the IRS will not have the basis amount (any information regarding what you paid for the property or any improvements that you made). As the taxpayer, you need to provide the additional information or you may be taxed on the full sale price.

Preparing Documentation for Your Underreported Income Audit

To determine whether you actually owe the IRS for underreported income, you’ll need to prepare a few items before you meet with a tax professional. First, gather all your W-2s and Form 1099s, and compare the income reported on those documents to your tax return for the year in question to make sure the amounts match.

Gathering Evidence to Contest Underreported Income Claims

Even if you find a discrepancy in what you reported, let your attorney determine whether the amount is correct and if the IRS’ proposed amount is reasonable. If you plan to contest what the IRS says you owe, a response will need to be prepared and sent back, along with supporting documents by the deadline provided. Your attorney can help you prepare the response and assist you in requesting an installment agreement if you cannot pay the amount in full.

Working with a Tax Professional on Your Audit Response

Your attorney can help you prepare the response and assist you. When facing an IRS audit for underreported income, professional guidance is crucial to navigate the complex tax regulations and potential penalties.

Getting an audit notice from the IRS is scary. But just because the IRS indicates you underreported income and owes money, does not mean it is a black-and-white situation. Professional assistance with auditing underreported income can help ensure you only pay what you legitimately owe. An experienced San Francisco attorney will help remedy the situation so that you, the taxpayers, are protected and receive the best possible outcome.

California residents facing IRS auditing for underreported income should act quickly to gather documentation and seek professional advice. With proper preparation and representation, you can effectively address the audit and potentially reduce or eliminate additional tax liabilities.

Allison Soares is a partner and tax attorney at Vanst Law. It doesn’t matter the issue: audits, collections, appeals, international disclosures, grumpy people— Allison enjoys fixing problems. In addition to her legal work, she has worked in accounting and utilizes that knowledge to her advantage while handling cases involving EDD audits.

Allison Soares

Allison Soares, a renowned tax attorney, excels in representing clients before the IRS, FTB, EDD, and CDTFA. With a Bachelor of Arts in Finance from the University of Wisconsin, Milwaukee, and a transformative teaching stint in Brazil, Allison’s diverse background enriches her legal expertise. She pursued law at St. Thomas University School of Law, Miami, complementing it with an MBA in accounting and forensic accounting. Further honing her skills, she obtained a Master of Laws in Taxation from the University of San Diego School of Law. As an adjunct professor at San Diego State University, Allison imparts her knowledge in tax procedures, practice, and ethics. Her accolades include being named Best of the Bar by the San Diego Business Journal and multiple Super Lawyer recognitions. Committed to community service, she volunteers with Forever Balboa Park and Friends of Balboa Park. Allison’s authoritative contributions in tax law are showcased through her publications and speaking engagements.
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I can't recommend Allison enough! She helped me successfully navigate a stressful EDD audit with expertise and grace. Not only is she incredibly smart and thorough, but she's also genuinely kind—something you don’t always expect from an attorney. Her support and guidance made all the difference. If you need a tax attorney who knows her stuff and truly cares, she's the one to call!
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Thank you Allison for all of your help and knowledge, and your strong team And referrals. I am beyond grateful. You went above and beyond my expectations.
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2024- Working with Allison has been an incredibly smooth experience both times I’ve worked with her. Her expert advice and the support she provides are outstanding, and we’ve had nothing but positive results each time. 2020- I was so impressed with her work during an EDD audit. I would HIGHLY recommend Allison to anyone going through an EDD Audit. From the very first 3 minutes of speaking with her, she was super helpful and professional, while also making me feel like I was talking to a friend, which really helped calm my anxiety. Allison was dedicated to helping us achieve the best possible outcome and was honest about all scenarios, even preparing us for the worst. We ended up with the VERY best outcome because of how she guided us through the process and made sure we had everything ready to tell our story to the auditor. If you want someone who truly listens, understands your business, and will be your biggest advocate, call Allison now! Be ready because she’s quick to respond with both calls and emails.
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Nadine Kunal
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Very thoughtful, concise, and honest advice provided. Would recommend her council to my family.
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We retained the services of Allison Soares for a recent IRS audit. The IRS was claiming we owed an exorbitant amount of money. After interviewing several qualified attorneys, Allison was the obvious choice. During this very stressful time for our family, we appreciated how knowledgeable and responsive she was from the very first call. Her professionalism and commitment to our case was truly impressive. She pointed out a few critical points, that another attorney may have missed, which we believe helped our case immensely. She guided us through this complicated process with great success and we could not have been happier with the outcome of the audit. We are 100% satisfied with her work and would highly recommend her to anyone seeking legal tax advice. Thank you so much Allison, we are truly grateful for all your hard work.
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I called this office to have a tax issue clarified for me. I have never received more candid, honest, and useful information. I would highly recommend Allison Soares.
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Allison Soares is incredibly knowledgeable, prompt, and helpful. Her detailed expertise in tax matters made my experience exceptional. Highly recommended!
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I received an EDD audit letter for my small s-corp business. I feel nervous. Fortunately I found Allison. I talked with her on phone today about my business and my concern, she gave me very solid suggestions and confidence to handle this. She is very honest and I highly recommend her to anyone who has trouble with EDD audit!
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Allison Soares is a great tax attorney. She helped my business navigate an difficult tax situation and I am very happy with the outcome