Reasonable Compensation for S-Corp Owners: How the IRS Determines Your Salary

Every S-Corp shareholder-employee who provides services to the corporation must receive reasonable compensation (salary reported on W-2) before taking distributions. This is not optional. The IRS has successfully challenged S-Corp owners who paid themselves minimal or zero salary in multiple court cases (Watson v. United States, Radtke v. United States, Spicer Accounting v. United States). When the IRS reclassifies distributions as wages, the consequences include back FICA taxes (15.3% combined), failure-to-deposit penalties, interest from the original due dates, and potential accuracy-related penalties. The factors courts have considered for reasonable compensation include training and experience, duties, time devoted, dividend history, payments to non-shareholder employees, the timing and manner of bonuses to key people, what comparable businesses pay for similar services, compensation agreements, and use of a formula.

How should an S-Corp owner set their salary?

If the IRS raises a consultant’s salary, what is owed?

The amount the IRS moves from distributions to wages becomes subject to payroll tax as if it had been paid through payroll. Below the Social Security wage base ($176,100 for 2025, $184,500 for 2026), that’s 12.4% Social Security plus 2.9% Medicare, split between the company and you. Interest and penalties can be added on top.

For the marketing consultant in the example, a few more points apply:

• Federal unemployment tax also applies to officer wages, on the first $7,000 of wages, if it wasn’t already paid. For 2026 the rate is 6.0%, or 0.6% net with the full state credit.
• Failure-to-deposit penalties on employment taxes run from 2% to 15%, depending on how late the deposit is. Which penalties get asserted varies by case; the Watson judgment just says “penalties”.
• Section 530 relief likely won’t help. The IRS says it doesn’t cover disputes over whether extra pay to someone already treated as an employee is wages, even when the business calls it a dividend. The ruling’s facts involve bonuses, so applying it to S-Corp distributions is an inference.

What are the most common IRS audit triggers for small businesses?

Schedule C filers with high gross receipts and significant deductions relative to income are audited at higher rates. Specific triggers include: claiming 100% business use of a vehicle, large home office deductions relative to income, cash-intensive businesses with round-number reporting, significant charitable deductions relative to income, and repeated business losses (hobby loss rule after 3-5 years). Inconsistencies between information returns (1099s, W-2s) and your reported income generate automatic notices. High deduction-to-income ratios compared to industry averages from the IRS’s DIF (Discriminant Information Function) scoring are a primary selection criterion. An audit does not mean you did anything wrong; it means your return was statistically unusual.

How long does the IRS have to audit your tax return?

The standard statute of limitations for an IRS audit is three years from the date you filed your return or the due date, whichever is later, under IRC 6501(a). This extends to six years if you omit more than 25% of gross income from your return, which the IRS interprets broadly to include overstatements of basis in some circumstances after the Supreme Court’s Home Concrete decision. There is no statute of limitations for fraudulent returns or for returns that were never filed, meaning the IRS can audit these at any time. Signing a Form 872 (Consent to Extend the Time to Assess Tax) extends the deadline, and the IRS often requests this near the end of the three-year window to continue an open examination without rushing to closure.

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.