Receiving an IRS audit notice is one of the most stressful pieces of mail a person can open. Your first instinct may be to panic, ignore it, or call the IRS immediately. All three reactions can make your situation significantly worse. This post gives you a clear, step-by-step understanding of what the notice means, what the IRS is actually asking for, and how to protect yourself from the moment you open that envelope.

Not All IRS Audit Notices Are the Same

Before you do anything, you need to identify which type of notice you received. The IRS communicates in specific ways, and the document in your hand tells you a great deal about what kind of scrutiny you are actually facing.

A CP2000 notice is not technically an audit. It is a notice of proposed changes, generated automatically when income reported on your return does not match information the IRS received from employers, banks, or other third parties. It looks alarming, but it is a discrepancy notice. You have a right to respond and explain, and many CP2000 issues are resolved without ever becoming a formal audit.

An audit letter is a formal examination notice. It will reference a specific tax year, identify what the IRS wants to examine, and include a deadline for your response. Some audit letters are handled entirely by mail. Others require you to appear in person.

A field audit notice is the most serious. It means an IRS Revenue Agent will contact you to schedule an in-person examination, often at your home, your business, or your accountant’s office. Field audits typically involve complex returns, large income figures, business activity, or significant discrepancies. If you received a field audit notice, you need representation before you respond.

The Three Types of Audits: A Direct Comparison

Understanding the structure of each audit type helps you know what you are dealing with and what to expect from the process.

How to Read Your IRS Notice

Every IRS notice includes a notice number in the top right corner. Write it down. It tells you exactly what the IRS is asking for and what authority they are acting under. The notice will also include the tax year under examination, the deadline for your response, and a contact name or unit within the IRS.

Read the entire notice before you do anything else. Identify three things:

1. What the IRS says you owe or what it wants to verify. This is the core issue. Is it a specific dollar amount? A deduction? A missing form?
2. What documentation is being requested. The notice will list exactly what you need to provide. Do not go beyond that list without representation.
3. The response deadline. IRS deadlines are firm. Missing them can result in a default determination against you, meaning the IRS assumes you agree with their position.

If anything in the notice is unclear, do not guess. Do not call the IRS and explain your situation cold. Get clarity from a tax professional who understands audit procedure before you make any contact.

What Not to Do After Receiving an Audit Notice

The mistakes people make in the first 48 hours after receiving an audit notice are often the most damaging. Here is what to avoid.

Do not ignore it. Ignoring an IRS audit notice does not make it go away. The IRS will proceed without your input, issue a statutory notice of deficiency, and you will lose your right to contest the findings in Tax Court if you miss the deadline. Every day you wait narrows your options.

Do not call the IRS cold without preparation. Many people instinctively call the number on the notice to explain themselves. This is a significant risk. Anything you say to an IRS examiner can be noted and used in the examination. If you call without having reviewed your return, gathered your records, and identified potential weaknesses, you may say something that opens new lines of inquiry. Preparation comes first.

Do not send more documents than requested. This is one of the most common and costly mistakes. The IRS asked for specific records. When you send additional documents beyond the request, you may inadvertently surface issues in other areas of your return that were never under examination. Give the IRS what it asked for, nothing more.

Do not argue your case by phone. Phone calls with the IRS are not recorded for your benefit. There is no transcript you can point to later. If you have a disagreement with an examiner’s position, put it in writing. Written responses create a record. Phone arguments do not.

Do not assume a small balance means a small problem. Some correspondence audits involve modest proposed adjustments but open the door to broader examination if you respond carelessly. Treat every IRS contact as the serious legal matter that it is.

What to Do First

Once you have read the notice carefully, take these steps in order.

1. Identify the tax year and the specific issue. Pull your original return for that year. Locate the line item or form the IRS is questioning.
2. Gather the records related to that specific issue. Only what was requested. Organize them clearly before you do anything else.
3. Assess the complexity. A simple CP2000 for a missing 1099-INT may be something you can handle with a written response. An office audit involving a Schedule C, or any field audit, requires professional representation.
4. Consider the deadline seriously. If you need more time to respond, you can request an extension from the IRS. Most examiners will grant a reasonable extension if you ask before the deadline, not after.

If you have any doubt about how to respond, consult a tax professional before you make contact. The cost of professional guidance at the outset is almost always less than the cost of correcting a poorly handled response.

Your Right to Representation

The IRS Taxpayer Bill of Rights guarantees you the right to retain representation. You do not have to speak directly with the IRS during an examination. A Federally Authorized Enrolled Agent can represent you before the IRS, communicate on your behalf, and ensure that the examination stays within its proper scope. Learn more about what to expect from IRS audit representation.

This right matters more than most people realize. When you are represented, the IRS examiner communicates with your representative, not with you directly. That removes the risk of an unprepared off-the-cuff statement becoming a liability. It also signals to the examiner that you are taking the process seriously and that any attempt to expand the scope will meet informed resistance.

How Audits Expand, and Why You Must Be Careful

IRS audits have a formal scope: the tax year and issues identified in the notice. But audits can expand. If an examiner finds irregularities while reviewing what you submitted, they have authority to broaden the examination to other years or other issues. This is sometimes called scope creep, and it is one of the most important reasons why you should never volunteer information beyond what was requested.

Taxpayers sometimes think that being forthcoming and transparent will earn goodwill. The IRS is not evaluating your character. It is conducting a legal examination of your tax liability. Voluntary disclosure of extra information, unrelated deductions you want to explain, or details about other years you want to clear up can and do trigger expanded examination. If something beyond the original notice needs to be addressed, your representative will advise you on how and whether to raise it through the appropriate channel, not through a casual aside in a document response.

If You Disagree With the Findings

An audit does not end with the examiner’s conclusions if you believe those conclusions are wrong. You have formal options.

If you disagree with the results of an examination, you can request a meeting with the examiner’s supervisor. If that does not resolve the issue, you can appeal to the IRS Independent Office of Appeals, which is a separate division of the IRS specifically tasked with resolving disputes without litigation. Appeals officers have settlement authority and often reach different conclusions than the original examiner. This is a significant and underused resource.

If Appeals does not resolve the matter, you have the right to take your case to the United States Tax Court, or in some situations, to federal district court or the Court of Federal Claims. Tax Court petitions must be filed within specific deadlines from the date of the statutory notice of deficiency, and missing that window permanently forecloses that option.

If the audit results in a balance you cannot pay in full, that is a separate problem with its own solutions. Installment agreements, offers in compromise, and currently not collectible status are all available depending on your financial situation. The back taxes resolution page outlines those options in detail.

Get Representation Before You Respond

Luisa N. Victoria is a Federally Authorized Enrolled Agent with direct experience representing taxpayers before the IRS in correspondence audits, office audits, and field audits. If you received an audit notice, the time to act is before you respond, not after. A single misstep in your initial response can limit your options for months. Contact Victoria Tax Resolution today to have your notice reviewed, your records assessed, and a clear response strategy put in place before your deadline arrives.

Book My Strategy Session

The Employee Retention Credit was one of the largest pandemic-era relief programs the federal government ever created. Billions of dollars went out to businesses that qualified. Billions more went to businesses that did not. Now the IRS is coming back for it, and if your business claimed the ERC, you need to understand what that means.

This post covers what the IRS is looking for, what triggers an audit, how the exam works, and what your options are if the agency disallows your claim.

What the Employee Retention Credit Was

The ERC was a refundable payroll tax credit created under the CARES Act in 2020 and expanded through 2021. Qualifying businesses could claim a credit of up to $5,000 per employee for 2020 and up to $7,000 per employee per quarter for 2021, for a potential maximum of $26,000 per employee across both years.

To qualify, a business had to meet one of two tests: either it was fully or partially suspended due to a government order related to COVID-19, or it experienced a significant decline in gross receipts compared to the same quarter in 2019. Wages paid during the qualifying period could not overlap with wages used for PPP loan forgiveness.

The credit was legitimate. Many businesses that claimed it were fully entitled to every dollar. The problem is that a wave of third-party promoters, commonly called ERC mills, aggressively marketed the credit to businesses that did not qualify, filed returns on their behalf, and collected large contingency fees. The IRS estimates that a significant portion of the claims it received were either fraudulent or based on incorrect eligibility determinations.

Why the IRS Is Auditing ERC Claims Aggressively Now

In September 2023, the IRS placed a moratorium on processing new ERC claims and warned that it had identified hundreds of thousands of questionable filings. That moratorium was later extended. The IRS has since created a dedicated ERC examination program and assigned significant audit resources to reviewing both individual claims and the promoters who filed them.

The enforcement push is operating on two tracks. Civil audits are reviewing claims for eligibility and demanding repayment with interest and penalties. Criminal investigations are targeting the promoters and, in some cases, the business owners themselves, particularly where records suggest intentional misrepresentation.

If you claimed the ERC, the question is not whether the IRS might look at your return. The question is whether you can substantiate your claim when they do.

What the IRS Is Looking For in an ERC Audit

ERC audits are document-intensive. The examiner will want to verify that your business actually met the qualifying criteria for each quarter you claimed the credit. The two qualification tests work differently, and the IRS scrutinizes them differently.

ERC Qualification Tests

Beyond the qualification tests, the IRS will also verify that wages claimed were actually paid, that the amounts are consistent with payroll tax filings, and that no double-dipping occurred with PPP-forgiven wages. If your PPP loan was forgiven, the wages that supported that forgiveness cannot also be used as the basis for ERC credits.

The Three Most Common ERC Audit Triggers

Supply Chain Disruption Claims Without Supporting Documentation

A number of ERC promoters told businesses they could qualify under the Suspended Operations Test because their suppliers were affected by government orders, even when the business itself was not directly subject to any such order. The IRS has been clear that indirect effects of government orders on a business’s suppliers do not automatically qualify the business for the credit. To use a supply chain argument, the business must show that it was unable to obtain critical goods or materials specifically because of a government order imposed on its supplier, and that it could not obtain those goods or materials from an alternative source. Claims based on vague supply chain disruption without that level of detail are being disallowed at a high rate.

Nominal Impact Claims That Don’t Meet the Standard

Partial suspension of operations only qualifies if the government order had more than a nominal effect on the business. The IRS uses a 10% threshold as a guideline: if less than 10% of the business’s gross receipts or services were affected by the restriction, the impact is generally considered nominal. Businesses that claimed the ERC on the basis of minor operational changes, such as reduced dining room capacity that represented a small fraction of total revenue, face significant risk of disallowance.

Claims From Periods That Do Not Qualify

The ERC eligibility window was specific. For 2020, it covered wages paid after March 12 and before January 1, 2021. For 2021, it covered Q1 through Q3 only. The Infrastructure Investment and Jobs Act retroactively ended the 2021 Q4 credit for most employers. Many businesses filed amended returns claiming credits for periods outside their actual qualifying window, often because a promoter told them they qualified for more quarters than they did.

What an ERC Audit Notice Looks Like and What Happens During the Exam

ERC audits are generally conducted through correspondence or as field exams. You may receive an IRS Letter 6577, which is a notice that the IRS is examining your ERC claim and needs documentation. You may also receive a standard examination notice for the tax year on which the amended return was filed.

The examiner will typically request a specific set of records: copies of the government orders you relied upon, evidence of how those orders affected your operations, quarterly payroll records, quarterly gross receipts figures, PPP loan forgiveness applications if applicable, and documentation showing how you calculated the credit.

If the IRS determines that your claim was partially or fully improper, it will issue a proposed adjustment. You will have the opportunity to respond before any final determination is made. If you disagree with the examiner’s conclusions, you can request an appeal. This is not a process you should handle without professional audit representation. The documentation requirements are detailed, the legal standards are specific, and the amounts at issue are often substantial.

The ERC Voluntary Disclosure Program

In late 2023 and into 2024, the IRS offered an ERC Voluntary Disclosure Program that allowed businesses to repay erroneous ERC credits at a reduced rate, initially 80% of the credit received, without penalties or interest, provided they had not already been audited. The first VDP closed in March 2024. A second program opened later in 2024 with different terms.

If you believe your ERC claim was erroneous and you have not yet been contacted by the IRS, there may still be options to proactively resolve the issue before enforcement begins. Whether any current program is available and whether it makes sense for your situation depends on your specific facts. This requires a direct consultation, not a general answer.

Your Options If the IRS Disallows Your ERC Claim

If the IRS issues a disallowance, you have three main paths.

The first is to accept the adjustment and repay the credit, plus interest and potentially penalties. The interest rate on underpayments has been running at 8% in recent periods. Penalties for negligence or substantial understatement of tax can add another 20% on top of the tax owed. If you received a large ERC refund, this exposure can be significant.

The second is to appeal. If you have documentation to support your claim and the examiner’s determination was incorrect, you can request review by IRS Appeals. Appeals is an independent function within the IRS and can sometimes reach a different result than the examining agent. An appeal requires a written protest that clearly identifies the facts and legal arguments supporting your position.

The third option, in some situations, is to seek penalty abatement. If you relied in good faith on a qualified tax professional or on IRS guidance that was later clarified, there may be grounds to reduce or eliminate penalties even if the underlying tax is owed. First-time abatement is also available to taxpayers with a clean compliance history. Abatement does not eliminate the tax or interest, only the penalty portion.

If you are also dealing with related back taxes or installment issues arising from an ERC repayment demand, those can often be addressed as part of the same resolution strategy.

Why ERC Audit Defense Is Specialized Work

ERC audits are not routine income tax audits. They require familiarity with the specific statutory and regulatory framework governing the credit, the IRS guidance issued under Notices 2021-20, 2021-23, and 2021-49, and the evolving enforcement posture the IRS has taken as it works through the backlog of questionable claims.

A representative handling your ERC audit will review your original claim against the qualification criteria, identify which quarters have strong documentation and which are exposed, gather and organize the records the IRS needs, communicate directly with the examiner so you do not have to, and advocate for the most favorable outcome the facts support. If your claim was entirely proper, that defense is about proving it. If part of your claim was erroneous, that defense is about limiting your exposure.

The IRS is moving through these cases. The time to prepare is before you receive an audit notice, not after.

Work With an Enrolled Agent Who Handles ERC Cases

Luisa N. Victoria is a Federally Authorized Enrolled Agent with the authority to represent taxpayers before the IRS at every level, including examinations, appeals, and collections. If your business claimed the ERC and you have concerns about your documentation, received an audit notice, or were told by a promoter that you qualified, contact this office to review your situation before the IRS reaches out first.

Book My Strategy Session

The fear of an audit is real. For most people, the word alone is enough to cause a knot in the stomach. But most of that fear is pointed in the wrong direction.

The IRS does not randomly pull returns. It does not target people out of spite or because of a bad feeling. Audits follow patterns. They follow data. A specific, automated system scores every return that comes through the door, and the returns that score highest get flagged for review. Once you understand how that system works and what it looks for, you can make informed decisions about your return instead of filing in fear.

This post breaks down what actually triggers IRS scrutiny, what the numbers look like by income level, and what you can do when your return has genuinely risky elements.

How the IRS Decides Who Gets Audited: The DIF Score

Every return filed with the IRS is run through a scoring algorithm called the Discriminant Information Function system, commonly referred to as the DIF score. You will not find this score on any notice the IRS sends you. It is internal. But it drives a significant portion of audit selection.

The DIF system works by comparing your return against statistical norms for taxpayers in your income bracket and filing category. If you are a sole proprietor earning $85,000 per year and your deductions look radically different from other sole proprietors at that income level, your DIF score goes up. The higher the score, the more likely a human classifier at the IRS will take a second look.

This matters because it explains something counterintuitive: you are not being compared to a theoretical perfect taxpayer. You are being compared to everyone else who looks like you on paper. A legitimate deduction that is wildly out of proportion to your income peers will flag faster than a questionable deduction that blends in.

DIF is not the only selection method. The IRS also uses document matching, third-party information returns, whistleblower referrals, and related-party examinations. But DIF is the foundation, and understanding it shapes how you think about everything else.

The Audit Triggers That Actually Matter

High Business Expense Ratios on Schedule C

Schedule C is one of the most audited forms in the tax code. Self-employed taxpayers report income and expenses here, and the IRS knows from decades of compliance data that Schedule C is also where noncompliance concentrates.

The specific categories that draw attention are meals and entertainment and vehicle expenses. Both are legitimate deductions with clear rules. Both are also frequently overstated. If your meals deduction represents 40% of your gross receipts, that ratio will look anomalous against your peers. If you are claiming 100% business use of a vehicle, the IRS will want to see a contemporaneous mileage log, not a number you reconstructed at tax time.

The issue is not claiming these deductions. The issue is claiming them without proportionality and without documentation.

Unusually Large Charitable Deductions

Charitable contributions are fully legitimate and fully deductible within the rules. What gets returns flagged is a contribution amount that is disproportionate to reported income. If you report $60,000 in income and $25,000 in charitable donations, that ratio will register as unusual. The IRS is not saying you didn’t donate. It is saying the pattern looks different from the norm and warrants verification.

Non-cash contributions, especially donated property, are a particular focus. Valuations on donated goods and vehicles are frequently inflated, and the IRS has specific rules about qualified appraisals for contributions above certain thresholds.

The Home Office Deduction

The home office deduction has a reputation it does not entirely deserve. It is not automatically a red flag. What the IRS looks for is whether the space meets the legal standard: regular and exclusive use for business, and either the principal place of business or a place where you meet clients. The word “exclusive” is where most claims break down. A desk in a spare bedroom that also serves as a guest room does not qualify.

If the space genuinely qualifies, claim it. If it does not clearly qualify, do not claim it hoping for the best. The deduction is worth less than the exposure.

Cash-Intensive Businesses

Restaurants, nail salons, hair salons, landscapers, contractors paid in cash, and similar businesses attract consistent IRS attention. The reason is simple: cash transactions are harder to verify than electronic ones. When income is largely cash-based, the IRS has fewer third-party data points to match against your return. That creates both opportunity for underreporting and scrutiny in response to it.

If you run a cash-intensive business and your reported income is significantly lower than what the IRS estimates businesses of your type and size typically generate, that gap draws attention.

Unreported Income and 1099 Mismatches

The IRS runs a program called the Automated Underreporter system, or AUR. It compares the income you report on your return against all the 1099s, W-2s, and other information returns filed by third parties that include your Social Security number. When those numbers do not match, the system flags the discrepancy automatically.

This is not a gray area audit trigger. It is a math problem. If a client paid you $14,000 and filed a 1099-NEC showing $14,000, and you reported $9,000 in self-employment income, the AUR system will find that gap. This kind of mismatch is one of the most common entry points for IRS contact.

Large Round-Number Deductions

Real business expenses rarely come out to exactly $5,000 or precisely $10,000. When deductions appear in suspiciously round numbers, it signals to IRS reviewers that the figure may have been estimated rather than calculated from actual records. This is not a definitive trigger on its own, but combined with other anomalies, it adds to the picture.

Rental Property Losses and Passive Activity Rules

Rental losses are subject to passive activity rules. In most cases, losses from rental properties can only offset passive income, not ordinary income. There is a limited exception for taxpayers who actively manage their rentals and earn under $100,000, allowing up to $25,000 in losses against ordinary income. That exception phases out completely by $150,000.

Real estate professionals who qualify under the tax code can treat rental activity as non-passive and deduct losses more broadly. But the qualification requirements are specific and strict. Claiming large rental losses without meeting those requirements is a documented audit trigger.

Consistent Self-Employment Losses Year After Year

A business that loses money every year raises a question the IRS takes seriously: is this actually a business, or is it a hobby with tax benefits? The hobby loss rules exist for exactly this scenario. If your Schedule C shows losses in three or more of the last five years, the IRS may determine that the activity lacks a profit motive and disallow the losses.

A single bad year is not the problem. A pattern is the problem. If your business is genuinely working toward profitability, documenting that intent, your business plan, your investment of time and money, and your industry knowledge matters.

Income Over $200,000

Audit rates are not uniform across income levels. Higher earners face meaningfully higher audit probability, and the gap widens sharply above $1 million. This is not punitive. It is resource allocation. Higher-income returns have more complexity and represent larger potential adjustments.

IRS Audit Probability by Income Range

Source: IRS Data Book, most recent available statistics. Rates reflect correspondence and field audits combined and are approximate.

What Does Not Reliably Trigger Audits

A few things carry undeserved reputations as audit magnets.

Filing for an extension does not increase your audit risk. The IRS does not interpret an extension request as a signal that something is wrong. Extensions are routine, widely used, and have no bearing on DIF scoring or selection.

Claiming a home office does not automatically flag your return if the deduction is legitimate and documented. The risk is in claiming a deduction that does not qualify, not in claiming one that does.

Claiming all legal deductions does not make you a target. The tax code exists to allow specific deductions, and taking them within the rules is not provocative. The issue arises when deductions are disproportionate, undocumented, or based on misapplied rules.

Fear of an audit should not cause you to leave legitimate deductions on the table. That is not conservative filing. That is overpaying.

When Your Return Carries Genuine Risk

Some returns are legitimately more complex. If yours falls into one of the higher-risk categories above, there are concrete steps that reduce your exposure without changing what you owe.

Document everything and do it contemporaneously. A mileage log you create the day you drive matters more than one you reconstruct six months later. Receipts, bank statements, and contracts kept in real time are far more credible than records assembled during an audit.

Keep documentation proportional to the size of the deduction. A $200 supply purchase needs less backup than a $15,000 vehicle expense claim.

Where an unusual deduction may appear out of context, consider attaching a brief written explanation to your return. This does not invite scrutiny. In many cases, it reduces it by showing the examiner that you know the rules and applied them intentionally.

If your return includes significant complexity, consider engaging a tax professional before filing. Representation at the filing stage costs less and accomplishes more than representation after a notice arrives.

If You Are Already Facing an Audit

An audit notice does not mean you owe more money. It means the IRS has a question. How you respond to that question matters as much as what the answer is.

You have the right to representation. You do not have to communicate with the IRS directly. A Federally Authorized Enrolled Agent can represent you before all levels of the IRS, respond to correspondence on your behalf, and ensure that the scope of the examination stays focused on what was actually questioned.

What you say during an audit, and what documents you voluntarily produce beyond what was requested, can expand the scope of an examination. Having a qualified representative between you and the IRS is not an admission of guilt. It is a practical decision.

Learn more about how audit representation works and what to expect at every stage: IRS Audit Representation Services.

Book My Strategy Session