If you are an S-corporation shareholder-employee — a doctor, lawyer, consultant, real estate professional, dentist, contractor, or any other professional whose business pass-through profits flow through to your personal tax return — there is a single tax issue that has produced more six-figure IRS audit adjustments in the last decade than almost any other: reasonable compensation. The S-corp reasonable comp issue is one of the IRS’s most active enforcement targets, the math is brutal when you lose, and the planning to avoid losing is conceptually simple but rarely executed properly.

Here is the basic story. S-corporations don’t pay corporate-level federal income tax — the income passes through to shareholders and is taxed at the individual level. But there’s a critical asymmetry: wages paid to a shareholder-employee are subject to FICA and Medicare payroll taxes (currently 15.3% in total before considering the additional Medicare tax under IRC § 3101(b)(2)), while distributions of corporate profits to shareholders are not. Many S-corp owners noticed this asymmetry years ago and aggressively minimized their salary while taking the rest as distributions — saving thousands of dollars per year in payroll tax. The IRS noticed the same thing and has been auditing aggressively ever since.

This article walks through what reasonable compensation actually means under the law, the cases that have shaped the doctrine, what triggers IRS reasonable comp audits, what factors the IRS examines, what the math looks like when an audit goes against you, and the planning that protects S-corp owners from these adjustments. By the end, you should know whether you’re exposed and what to do about it.

First, the Law: Why Reasonable Compensation Is a Real Issue

S-corporation shareholder-employees who provide services to the corporation are required to receive “reasonable compensation” for those services, and that compensation must be reported as wages subject to FICA and Medicare. The legal framework comes from IRC § 3121(d) (defining “employee”), IRC § 3121(a) (defining “wages”), Treas. Reg. § 31.3121(d)-1 (employee status), and — critically — a substantial body of case law and IRS guidance that says distributions to a working shareholder cannot be a substitute for the wages they should have received.

The IRS’s position, articulated in numerous fact sheets and audit technique guides, is straightforward: an S-corporation shareholder who provides services to the corporation must be paid a reasonable wage for those services before any profit distributions are made. If the IRS examines an S-corp and finds that the shareholder took $20,000 in wages and $200,000 in distributions on a return showing $300,000 in net profit, the IRS will look very hard at whether the $20,000 wage figure was reasonable for the work actually performed.

The seminal cases

Watson v. Commissioner.

David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012), is the most-cited case in this area. Watson was a CPA who took a $24,000 salary from his S-corp while distributions of $175,000 to $200,000 flowed through to him annually. The IRS reclassified $67,000 per year as additional wages subject to payroll tax. The Eighth Circuit affirmed, holding that the IRS’s reclassification was reasonable based on what comparable CPAs in the area were earning. Watson lost. The case stands for the proposition that the IRS can and will reclassify distributions to wages where the shareholder’s reported salary is unreasonably low for the services performed.

Glass Blocks Unlimited v. Commissioner.

Glass Blocks Unlimited v. Commissioner, T.C. Memo 2013-180, involved an S-corp shareholder who paid himself zero salary while taking $100,000+ distributions. The Tax Court rejected the zero-salary position completely. Zero is almost always the wrong answer for a working shareholder.

Sean McAlary Ltd. v. Commissioner.

Sean McAlary Ltd. v. Commissioner, T.C. Summ. Op. 2013-62, similarly held that a real estate broker working for his own S-corp had to recognize reasonable wages, with the Tax Court accepting the IRS’s reclassification analysis. McAlary is one of several cases involving real estate professionals — a group the IRS has audited heavily on this issue.

The pattern.

Across these cases, the IRS prevails when the shareholder cannot defend the salary figure with documented analysis of what comparable professionals earn for the work performed. The shareholder prevails (or settles favorably) when the salary is supported by reasonable analysis, even if the salary is at the lower end of a defensible range. The lesson: not having a basis for the salary is the most common way owners lose these cases.

What Triggers an S-Corp Reasonable Comp Audit

The IRS doesn’t audit every S-corp every year. Reasonable comp audits cluster around specific triggers. Understanding the triggers tells you whether your return is in the higher-risk category.

Low salary relative to distributions.

The most common trigger. An S-corp showing $200,000 of distributions to a shareholder who reports $30,000 of W-2 wages from that same corporation is a glaring red flag. The IRS’s analytics flag returns where the W-2 wage to distribution ratio is dramatically off market for the industry.

Zero salary on a profitable S-corp.

Reporting zero W-2 wages from your own S-corp while taking substantial distributions is essentially asking for an audit. The Glass Blocks case made clear the Tax Court’s view, and the IRS examines these cases routinely.

Industry comparison.

Certain industries have heavy IRS attention because they routinely produce reasonable comp issues: medical and dental practices, law firms, consulting firms, real estate brokerages and property management, financial services and accounting practices, IT consulting, and licensed trades operating as S-corps.

Substantial profits with minimal payroll.

A small S-corp with one shareholder-employee, $400,000 of net profit, and a $50,000 W-2 wage line raises an obvious question: who’s actually doing $400,000 worth of work? If the answer is the sole shareholder, the salary number requires explanation.

Form 1120-S audit selection.

The IRS’s Discriminant Function (DIF) scoring includes ratios that flag returns with potential reasonable comp issues. Returns scoring high on these ratios get more attention. Audit selection isn’t random for S-corps with notably skewed wage-to-distribution ratios.

How the IRS Determines Reasonable Compensation

There is no single formula. The IRS and courts apply a multi-factor analysis to determine what reasonable compensation should have been. The factors come from cases like Mayson Mfg. Co. v. Commissioner, 178 F.2d 115 (6th Cir. 1949), and have been refined in subsequent cases. The major factors:

Training and experience.

What is the shareholder’s educational background, professional credentials, and years of experience? A board-certified specialist with 25 years of practice commands different compensation than a generalist with three years of experience.

Duties and responsibilities.

What does the shareholder actually do for the corporation? Day-to-day management? Sales? Technical work? Strategic oversight? The actual work performed shapes what that work is worth.

Time and effort devoted to the business.

Does the shareholder work full-time, or part-time? A 60-hour-per-week working shareholder commands different compensation than one who is largely passive.

Dividend history of comparable corporations.

What do similarly situated C-corporations pay in dividends, and what do similar S-corps pay in salary? The IRS uses industry data to benchmark.

Compensation paid to non-shareholder employees.

What does the corporation pay other employees with similar functions? If the bookkeeper earns more than the shareholder-CEO, that’s a problem.

Compensation history.

What has the shareholder been paid in prior years? Sudden drops in salary while distributions rise are scrutinized.

Use of formula or industry data.

Does the corporation use a defensible methodology to set the salary? Industry compensation data, formal valuation studies, or salary surveys (RC Reports, Salary.com, BLS data, professional association surveys) all support a position. “I just picked a number” does not.

Comparison to what comparable employees earn.

This is often the most important factor. What does an experienced doctor earn working for a practice they don’t own? What does an attorney earn working for a firm they don’t own? The shareholder’s salary should bear a reasonable relationship to that comparable wage.

The Math: What Happens When You Lose an Audit

Reasonable comp adjustments are expensive. A typical adjustment converts S-corp distributions into reclassified W-2 wages, and the corporation owes:

• Employer FICA: 6.2% on wages up to the Social Security wage base (currently $168,600 for 2024, indexed).
• Employer Medicare: 1.45% on all wages.
• Employee FICA and Medicare: 7.65% (or 8.55% if the additional Medicare tax under IRC § 3101(b)(2) applies).
• Federal Unemployment Tax (FUTA): up to 6% on the first $7,000 (with state credit reductions).
• State Unemployment Tax (SUTA): varies by state.
• Failure-to-deposit penalty under IRC § 6656: 2% to 15% depending on lateness.
• Failure-to-file penalty on amended Form 941s under IRC § 6651(a)(1).
• Accuracy-related penalty under IRC § 6662: 20% of underpayment if the position lacked reasonable basis.
• Interest under IRC § 6601, compounded daily.

On a $150,000 annual reclassification across three audit years, the headline tax alone is roughly $69,000 (multi-year FICA and Medicare combined). Penalties and interest typically push that to $90,000 to $130,000+ depending on the age of the years and the specific penalty exposure. For aggressive multi-year cases involving multiple shareholders, six-figure adjustments are routine and seven-figure adjustments occur.

How to Set a Defensible Reasonable Compensation

Step 1: Document the analysis annually.

Reasonable comp is not a one-time decision — it should be revisited each year and documented. The contemporaneous file should include the methodology used, the data sources consulted, the factors considered, and the conclusion. A two-page memo prepared each January, signed by the shareholder and stored with the corporation’s records, is dramatically better than a number picked from thin air.

Step 2: Use real industry data.

Several services exist specifically to support reasonable comp determinations: RCReports, Bureau of Labor Statistics Occupational Employment and Wage Statistics, professional association compensation surveys (medical specialty associations, bar associations, AICPA, etc.), Salary.com, and PayScale. These sources provide ranges by occupation, geography, experience level, and firm size. Using them and citing them in the documentation matters.

Step 3: Consider the cost-of-services / market-replacement test.

Ask the simple question: if I had to hire someone to do exactly what I do for the corporation, what would I have to pay them? That number — the cost to replace your services on the open market — is the strongest basis for reasonable comp. It survives audit scrutiny because it’s grounded in what the labor market actually values.

Step 4: Adjust for time.

If you work part-time for the S-corp — say, 25 hours per week — the reasonable compensation is the full-time rate adjusted for time. Documenting actual hours worked for the corporation supports time-based adjustments and is one of the few ways to legitimately reduce the salary number for a multi-business owner who genuinely splits time across ventures.

Step 5: Be conservative on the lower bound.

Reasonable comp is a range, not a single number. The IRS is more likely to accept a salary at the lower end of a defensible range than to accept a number below the range. “I used the 25th percentile of the BLS data for my profession in my metro area” is a defensible position. “I used something well below the BLS data” is not.

Step 6: Pay the salary correctly.

The W-2 wages must actually be paid, with FICA withheld, payroll taxes deposited on schedule, and Form 941s filed timely. Treating reasonable comp as a paper concept while not actually running payroll properly is a fast track to additional penalties layered on top of reclassification adjustments.

Frequently Asked Questions

Q1. I’m a sole shareholder S-corp making $300,000 net profit. What’s a reasonable salary?

There is no universal answer because the right salary depends on your profession, geography, experience, time commitment, and the specific work you do. For a typical professional services S-corp at $300,000 net profit, defensible reasonable comp often falls in the $100,000 to $200,000 range — with the specific number depending on industry comparison data. A doctor making $300,000 net profit might have reasonable comp of $200,000+; a part-time consultant at the same profit level might support $80,000 to $120,000. The key is the documented analysis, not the number itself.

Q2. Can I just pay myself zero salary if my corporation is having a bad year?

Risky. Glass Blocks Unlimited and similar cases support the view that working shareholders should receive reasonable compensation even in low-profit years — with the salary scaling to actual profitability if necessary. A genuinely loss-year corporation can support a low or zero salary because there’s no cash to pay it, but a year with substantial distributions and zero salary is the IRS’s favorite fact pattern. If the corporation can pay distributions, it can usually pay some level of wages.

Q3. I have multiple S-corporations. Do I need a separate reasonable comp analysis for each?

Yes, generally. Each S-corp where you provide services owes reasonable compensation for those services. Reasonable comp doesn’t aggregate across entities — the analysis applies entity by entity. Multi-entity structures need separate documentation per entity, and the time-allocation analysis becomes more important because you can’t be working 50 hours per week for each of three corporations.

Q4. The IRS audited my S-corp and proposed a reasonable comp adjustment. Can I fight it?

Yes. Reasonable comp is fact-intensive, and a well-prepared defense often produces meaningful reductions in proposed adjustments. The defense typically rests on documenting the work actually performed (often less than the IRS assumes), the time devoted (which may be part-time), the industry data supporting your salary range, and the relationship between your compensation and what comparable professionals earn for similar work. Cases that go to Appeals frequently settle at adjustments substantially smaller than the examiner proposed.

Q5. I’m a real estate professional with my own S-corp. Why is the IRS auditing this?

Real estate brokers and property managers operating as S-corps have been a heavy IRS focus area, partly because the industry has historically had aggressive reasonable comp positions. The McAlary case is one of several involving real estate. If you operate a real estate practice as an S-corp, your return is in a higher-risk category and the documentation standard for your reasonable comp determination should be commensurately higher.

Q6. Can my CPA’s reasonable comp analysis protect me if I’m audited?

It helps significantly, particularly if it’s contemporaneous (prepared at the time of the salary determination, not after the audit notice arrived) and grounded in real data. A CPA’s analysis using industry compensation surveys, with a written methodology, supports the position both factually and as a reasonable cause defense to penalties. “My CPA picked the number” alone is not enough — the analysis behind the number is what matters.

Q7. What about the additional 0.9% Medicare tax under IRC § 3101(b)(2)?

Worth flagging. Wages and self-employment income above $200,000 (single) or $250,000 (MFJ) are subject to an additional 0.9% Medicare tax under IRC § 3101(b)(2). Reasonable comp reclassifications that push wages into this range create additional liability, and the rate effectively becomes 9.0% on wages (employer 1.45% + employee 1.45% + employee additional 0.9%, plus 6.2% Social Security up to the wage base). The math gets worse as the wages get higher.

Q8. Are LLC members taxed as S-corp the same way?

If an LLC has elected to be taxed as an S-corporation by filing Form 2553, then yes — the LLC is taxed under Subchapter S, and reasonable comp rules apply just as if it were a state-law corporation. The underlying state-law entity (LLC vs. corporation) doesn’t change the federal tax analysis once the S election is made.

Q9. Can I avoid this issue by switching back to a sole proprietorship or LLC taxed as a partnership?

You’d be trading one set of issues for another. Sole proprietorships and partnerships are subject to self-employment tax under IRC § 1401 on net earnings from self-employment, which captures essentially all of the income that an S-corp tries to allocate to distributions. Switching back loses the S-corp payroll tax benefit entirely — not just the aggressive portion. For most owners, the right answer is to keep the S-corp election and document reasonable comp properly, not to abandon the structure.

The Mistakes That Make S-Corp Audits Worse

Mistake 1: Picking a salary number with no documentation.

This is the most common avoidable mistake. “I thought $30,000 sounded reasonable” does not survive an examiner’s questions. A defensible salary is one supported by industry data, methodology, and contemporaneous documentation.

Mistake 2: Using prior-year salary without re-examining each year.

Reasonable comp should be revisited annually based on current industry data, current profitability, current time commitment, and current scope of work. Using the same number every year for ten years — even if the original number was defensible — creates a stale position that drifts away from market over time.

Mistake 3: Trying to fix the problem only after the audit notice arrives.

Reasonable comp documentation prepared after the audit begins is much weaker than contemporaneous documentation. Examiners scrutinize the timing of analysis. “You prepared this two weeks after the audit notice” is not a winning fact.

Mistake 4: Ignoring the part-time / time-allocation argument.

Many S-corp owners genuinely don’t work full-time for the entity. Time allocation is one of the most powerful factors in reasonable comp analysis, and one of the least documented. Tracking actual hours worked for the S-corp throughout the year strengthens the position significantly.

Mistake 5: Conflating distributions with loans or expense reimbursements.

Distributions need to actually be distributions — properly authorized, properly accounted for, and reported correctly on Schedule K-1. Treating salary, distributions, loans, and expense reimbursements as interchangeable creates documentation problems that can damage other audit issues even beyond reasonable comp.

Mistake 6: Underestimating the cumulative cost of multi-year exposure.

Reasonable comp issues compound across years. An audit covering three years of low-salary positions produces three years of payroll tax adjustments plus penalties and interest. The cumulative dollar amount is often far larger than the single-year tax savings the strategy was designed to produce. Cost-benefit analysis on the salary decision should account for cumulative multi-year audit exposure, not just one-year savings.

Mistake 7: Hiring a representative without S-corp audit experience.

Reasonable comp audits are a specialized area within tax representation. Practitioners who handle these cases regularly know the case law, the factor analysis, the industry data sources, and the IRS’s typical settlement ranges at Appeals. Practitioners who don’t handle them often produce thin defenses that lead to larger adjustments and missed Appeals opportunities.

How Mike Habib, a Federally Licensed Enrolled Agent, Helps

Mike Habib, an Enrolled Agent (EA), is a federally licensed tax practitioner with unlimited rights to represent taxpayers before the IRS in all 50 states under Treasury Department Circular 230. Mike is tested and licensed specifically on tax matters, and is required to maintain continuing education in tax law and ethics.

In an S-corporation reasonable compensation matter — either proactively (setting up a defensible salary) or reactively (defending an audit), Mike Habib, EA handles the parts of the case that determine the outcome:

• Filing Form 2848 so the IRS communicates with Mike, not you, while the audit or planning is in process.
• Pulling IRS account transcripts and Form 1120-S filings to identify the specific years, the specific items, and the audit posture.
• Analyzing the S-corp’s historical wage-to-distribution ratios, profitability, and the shareholder’s actual role in the business.
• Preparing a defensible reasonable compensation analysis using industry data sources — RCReports, BLS Occupational Employment and Wage Statistics, professional compensation surveys, and market-replacement methodology.
• Documenting the multi-factor analysis under Mayson Mfg. and the post-Watson case law for the shareholder’s specific facts.
• Defending audit reclassifications by establishing comparable compensation, time allocation, scope of services, and methodology.
• Negotiating directly with examiners to reduce proposed adjustments based on the documented record.
• Pursuing accuracy-related penalty defense under IRC § 6664(c) where reasonable cause and good faith are supportable.
• Escalating cases to the examiner’s group manager and to IRS Independent Office of Appeals when the front-line position is unfavorable.
• Coordinating with state tax agencies (FTB, EDD in California, and equivalents) where state-level wage and SUI implications follow federal reclassification.
• Building forward-looking reasonable comp documentation processes so the corporation’s position remains defensible year after year.

Why Clients Choose My Firm, Mike Habib, EA

My firm, Mike Habib, EA, is a tax representation practice based in Whittier, Los Angeles County, California, serving clients in all 50 states and Americans living overseas — with substantial experience in S-corporation tax planning, reasonable compensation analysis, and S-corp audit defense. I am a federally licensed Enrolled Agent with more than 20 years of experience handling complex tax representation, audit defense, and the coordination of corporate-level and shareholder-level tax positions.

Before building this practice, I served as Controller at Xerox Corporation and Director of Finance at AEG. That corporate finance background means I read Form 1120-S filings, payroll registers, K-1s, distribution histories, and compensation studies the way the IRS reads them — which makes a measurable difference when defending a reasonable comp position before an examiner who knows the case law and the factor analysis cold.

Clients who hire my firm work directly with me. Not a salesperson. Not a junior staff member. Not a rotating call center. The same Enrolled Agent who reviews your S-corp returns, runs the reasonable comp analysis, prepares the documentation, and represents you with the IRS in audit and Appeals.

If you are an S-corporation shareholder-employee with concerns about your reasonable compensation position, are facing an active IRS audit on this issue, or want to set up a defensible analysis before any audit notice arrives, the most valuable thing you can do today is have someone evaluate the position before the IRS does. Visit myirstaxrelief.com or call my office at 1-877-788-2937. We can review your S-corp returns, model the reasonable comp range, and — if you choose to engage — build the defense or the documentation that protects what you’ve built.