What Is Reasonable Compensation? IRS Rules for S and C Corps

Reasonable compensation under IRS rules is the salary a business owner must pay themselves for services they actually perform, measured against what an unrelated employer would pay someone with comparable skills for the same job. S-corporation owners tend to set it too low to shrink payroll taxes; C-corporation owners sometimes set it too high to pull profits out as deductible salary instead of dividends. Both directions carry back taxes, penalties, and interest that can easily exceed whatever the original strategy was trying to save.

Who the Rule Applies To

S-corporations draw the heaviest scrutiny. A shareholder who performs services for the company must receive wages, and those wages must be reasonable before the remaining profit can leave the company as a distribution. The IRS has stated plainly that an S-corporation “should not attempt to avoid paying employment taxes by having their officers treat their compensation as cash distributions, payments of personal expenses, and/or loans rather than as wages.”¹ Revenue Ruling 74-44 gives the IRS authority to reclassify distributions as wages when an officer works without fair pay, which pulls in the Social Security and Medicare taxes the owner tried to avoid.²

C-corporations face the mirror image. Salary is deductible to the corporation under 26 U.S.C. § 162, so some owners inflate executive pay to move profits out at individual rates rather than paying the corporate tax and then a dividend on top.³ The IRS answers by denying the deduction for any portion of the salary that exceeds a reasonable amount. The disallowed portion then gets taxed at the 21% corporate rate and again as a dividend to the shareholder.

Sole proprietors and partners sit outside this fight. A sole proprietor pays self-employment tax on all net earnings, so there is no wage-versus-distribution split to police. Partners take guaranteed payments and distributive shares on Schedule K-1 rather than W-2 wages.⁴ Reasonable compensation disputes rarely surface for these structures because the tax mechanics don’t reward relabeling.

How the IRS Decides Whether a Salary Is Reasonable

The IRS defines reasonable compensation as “the value that would ordinarily be paid for like services by like enterprises under like circumstances.”⁵ Applying that to an owner who runs sales, operations, and finance out of the same chair is where the courts come in. Examiners generally weigh several factors:

Duties and responsibilities, including how many roles the owner fills and how much authority they carry.
Time commitment, measured in hours per week and whether the owner has other ventures on the side.
Training and experience: education, certifications, and years in the industry.
Business size and complexity: revenue, headcount, geographic footprint, and how earnings compare to peers.
Comparable salaries paid by similar businesses in similar markets for equivalent positions.
Dividend or distribution history, since a company that pays large salaries but never a distribution looks like it is disguising a return on investment as wages.

The Independent Investor Test

The Seventh Circuit offered a streamlined alternative in Exacto Spring Corp. v. Commissioner (1999), and several other courts have picked it up. The question is whether an independent investor would be satisfied with their return after the executive’s salary is paid.⁶ Strong shareholder returns after the salary is paid mean the compensation is presumptively reasonable. If the salary consumes so much profit that a rational outside investor would walk, the pay is probably inflated.

What Watson Tells S-Corp Owners

The Eighth Circuit’s 2012 decision in Watson v. Commissioner is the case S-corp accountants cite most often. David Watson, an experienced CPA, ran his practice as an S-corporation, paid himself $24,000 a year, and took roughly $200,000 in annual distributions. The IRS argued his salary should have been about $91,044 given his 20 years of experience, advanced degree, and firm revenue over $2 million. The court agreed and reclassified the difference as wages subject to employment taxes.⁷ A salary that looks implausibly low next to the going rate for the work will not survive audit, regardless of how the corporate documents label the payments.

Setting a Number You Can Defend

The best protection is documentation you assemble before you pick the number, not after an examiner asks. Start with objective wage data. The Bureau of Labor Statistics publishes Occupational Employment and Wage Statistics covering roughly 830 occupations by national, state, and metropolitan area.⁸ Match your actual duties to the closest occupation code and pull median and 75th percentile figures for your area. Owners who wear several hats may need data for each role.

Private salary surveys from recruiters and industry trade groups fill in gaps for niche or executive positions where BLS categories run too broad. Save copies of whatever data you use, because an audit three years out will require you to show what was available at the time you set the salary.

Then document your qualifications. A short written memo explaining why you chose the number, keyed to your experience, certifications, hours, and market data, creates a contemporaneous record that carries real weight. It is effectively a justification letter to a future auditor.

Timing and Payment Structure

One pattern examiners watch for is the S-corporation that runs minimal wages through three quarters and then drops a lump sum at year end to reach a defensible total. Courts treat “timing and manner of paying bonuses to key people” as a relevant factor.¹ Regular payroll with proper withholding on each check reads as legitimate. A single year-end adjustment that happens to equal what the company needs to distribute does not.

The $500,000 Reporting Threshold

S-corporations with total receipts of $500,000 or more must file Form 1125-E, Compensation of Officers, reporting detailed information about each officer’s pay.⁹ Once the IRS has that data, comparing officer pay to industry benchmarks is a fast exercise. Companies crossing this line should treat the form as a built-in audit trigger.

What It Costs When S-Corp Pay Is Too Low

When the IRS reclassifies distributions as wages, the company owes the employment taxes it should have paid all along. Combined Social Security tax runs 12.4% on wages up to $184,500 in 2026, split between employer and employee, plus a combined Medicare tax of 2.9% on all wages with no cap.¹⁰¹¹ Wages above $200,000 pick up an additional 0.9% Medicare tax on the employee side.¹²

The penalties are where the bill balloons. The failure-to-pay penalty runs 0.5% per month on unpaid tax, capped at 25%.¹³ The failure-to-deposit penalty scales with how late the employment tax deposits are, from 2% at one to five days late up to 15% once the IRS has issued a demand notice and the tax remains unpaid for another ten days.¹⁴ Interest runs from the original due date on top of everything.

If the understatement of tax is large enough to be “substantial,” a 20% accuracy-related penalty attaches to the underpayment. For S-corp shareholders who also claim the Section 199A deduction, the substantial-understatement threshold drops from 10% to 5% of the tax that should have been shown on the return.¹⁵ That lower bar makes the accuracy penalty easier to stack.

What It Costs When C-Corp Pay Is Too High

Section 162 deducts only “a reasonable allowance for salaries or other compensation for personal services actually rendered.”³ When the IRS decides salary exceeds a reasonable amount, it disallows the deduction for the excess. The corporation owes 21% corporate tax on that portion, and the shareholder must report the same dollars as a dividend on their personal return. The excess gets taxed twice.

The 20% accuracy-related penalty can apply here as well. For C-corporations, a substantial understatement means the underpayment exceeds the lesser of 10% of the correct tax (or $10,000, whichever is greater) or $10 million.¹⁵ Most closely held C-corporations hit that lower threshold well before the $10 million cap matters.

How the Salary Number Interacts With the QBI Deduction

The Section 199A qualified business income deduction, made permanent by the One Big Beautiful Bill Act, lets eligible S-corporation owners deduct up to 23% of qualified business income.¹⁶ Reasonable compensation paid as W-2 wages is excluded from qualified business income. Every dollar classified as salary is a dollar that does not qualify for the 23% deduction.¹⁷

That creates a three-way tension. A higher salary means more payroll tax and a smaller QBI deduction. A lower salary reduces payroll tax and enlarges the QBI deduction, but raises reclassification risk. For higher-income owners, the QBI deduction is also limited by the total W-2 wages the business pays, so a salary set too low can actually shrink the deduction on a different axis. Back-of-the-envelope math is unreliable here.

Health Insurance for More-Than-2% Shareholders

If you own more than 2% of an S-corporation and the company pays your health insurance premiums, those premiums must be reported as wages in Box 1 of your W-2.¹⁸ They are not subject to Social Security, Medicare, or federal unemployment taxes as long as the plan covers a class of employees rather than just the shareholder. The premiums count as income for income tax purposes, and you can then take the self-employed health insurance deduction on your personal return to offset that amount. Skipping the W-2 reporting step creates a compliance problem even when the net tax effect is roughly zero.

Paying Family Members

Hiring a spouse or child is common in a closely held business, and the standard doesn’t change: pay must match what you would pay an unrelated person for the same work. Overpaying to shift income into a lower bracket, or underpaying to dodge payroll obligations, both invite scrutiny.

The practical documentation bar sits higher for family employees because the IRS assumes the arrangement lacks arm’s-length bargaining. Keep job descriptions, timesheets, and payroll records showing real work at real hours for market pay. Run wages through normal payroll with proper withholding even where exemptions apply. Children under 18 working in a parent’s sole proprietorship are exempt from Social Security and Medicare taxes, provided the work is legitimate and age-appropriate. That exemption does not extend to S-corporations or C-corporations; a child’s wages there follow standard payroll rules regardless of the parent’s ownership.

Nonprofits and Excess Benefit Transactions

Tax-exempt organizations face a separate framework with unusually steep penalties. Under Section 4958, paying excessive compensation to a “disqualified person” (typically a senior officer, director, or anyone with substantial influence over the organization) is an excess benefit transaction. The person who receives the excess owes an initial excise tax of 25% of the excess amount, and an additional 200% tax if it is not corrected within the taxable period.¹⁹ Any organization manager who knowingly approves the transaction owes a separate 10% tax, capped at $20,000 per transaction.

Nonprofits can shift the burden of proof to the IRS by following the rebuttable presumption procedure: independent approval by an authorized body free of conflicts, reliance on appropriate comparability data, and contemporaneous documentation of the basis for the decision.²⁰ The presumption doesn’t guarantee the pay survives a challenge, but it forces the IRS to prove the compensation was unreasonable rather than making the organization prove it was reasonable.

1
Internal Revenue Service. Wage Compensation for S Corporation Officers
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Internal Revenue Service. Information Letter Regarding Recharacterization of S Corporation Distributions
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Office of the Law Revision Counsel. 26 U.S. Code 162 – Trade or Business Expenses
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Internal Revenue Service. Paying Yourself
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Internal Revenue Service. Meaning of Reasonable Compensation
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Justia Law. Exacto Spring Corporation v. Commissioner of Internal Revenue
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U.S. Court of Appeals for the Eighth Circuit. Watson v. Commissioner
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U.S. Bureau of Labor Statistics. Occupational Employment and Wage Statistics
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Internal Revenue Service. Instructions for Form 1120-S
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Internal Revenue Service. Topic No. 751, Social Security and Medicare Withholding Rates
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Social Security Administration. Contribution and Benefit Base
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Internal Revenue Service. Topic No. 560, Additional Medicare Tax
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Internal Revenue Service. Failure to Pay Penalty
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Internal Revenue Service. Failure to Deposit Penalty
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Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments
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House Ways and Means Committee. The One Big Beautiful Bill
17
Internal Revenue Service. Qualified Business Income Deduction
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Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues
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Office of the Law Revision Counsel. 26 USC 4958 – Taxes on Excess Benefit Transactions
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Internal Revenue Service. Rebuttable Presumption – Intermediate Sanctions