S-Corp Reasonable Compensation: What the IRS Actually Requires and How to Set Your Salary

Why the IRS cares about S-corp salaries

S-corp owners who pay themselves distributions instead of salary avoid payroll taxes — the 15.3% Social Security and Medicare tax on wages. This is entirely legal, which is why S-corps exist as a tax planning structure. But the IRS recognized that if owners could simply take all their income as distributions, the payroll tax system would collapse.

The solution: require owners who provide services to the S-corp to pay themselves a reasonable salary first, with full payroll taxes. Only the income above that salary can flow out as distributions, which aren’t subject to payroll tax.

Distributions aren’t automatically tax-free — they’re only free of payroll tax. You still pay income tax on S-corp pass-through income. The savings are entirely in the payroll tax on the portion taken as distributions rather than W-2 wages.

What “reasonable” actually means

The IRS standard comes from IRC §162 and Treasury Regulations §1.162-7: reasonable compensation is “only such amount as would ordinarily be paid for like services by like enterprises under like circumstances.”

In practice, courts and IRS auditors look at:

• What the market pays for the specific services performed (using wage databases, surveys, expert testimony)
• The owner’s qualifications, experience, and the complexity of the role
• Hours worked and the nature of duties performed
• Whether the compensation is comparable to what the business pays (or would pay) an unrelated employee for the same work
• The ratio of salary to total S-corp distributions — very low salary + high distributions is a clear signal

How the IRS actually finds low-salary S-corps

The IRS has access to all S-corp returns filed. Through data analytics, they can identify patterns: S-corps with large distributions and minimal or no officer compensation relative to revenue. The IRS’ Office of Research publishes guidance for auditors on S-corp compensation issues, and examinations of zero-salary or very-low-salary S-corps have increased over time.

A practical method for setting salary

The goal is a salary that reflects what a similarly qualified employee would earn for the same services — documented with evidence. Here’s how to build a defensible number:

1. Define what you actually do — your job title and responsibilities within the business (manager, professional services, operations, sales)
2. Find market comparables — Bureau of Labor Statistics Occupational Employment Statistics, RCReports, PayScale, or industry surveys
3. Factor in hours — if you work 60 hours/week as the sole operator, your salary should reflect a full-time role, not a part-time one
4. Consider the business size — a solo therapist at $200k revenue is paid differently from a managing director at a $5M firm
5. Document the analysis — keep a memo or worksheet showing your sources and reasoning, contemporaneous with payroll setup

The salary-distributions balance: how the math works

Where the QBI deduction interacts

One reason owners push salaries lower: the QBI deduction base is reduced by W-2 wages paid to owners. A lower salary means a slightly larger QBI deduction.

But this trade-off is usually modest at typical income levels. At a 22% income tax rate, each $10,000 of additional salary costs $2,200 in QBI deduction value. The payroll tax cost of $10,000 in salary is $1,530. Net: a $10k salary increase costs $3,730 in total tax. This is not a reason to dramatically under-pay — but it’s a real factor in salary optimization.

Above the QBI phase-out thresholds ($197,300 single / $394,600 MFJ in 2025), the W2-wage limitation on QBI actually favors a higher salary — because higher W-2 wages increase the QBI deduction ceiling. The math changes above the thresholds.

Document it now, not at audit

The IRS doesn’t care what your explanation is three years after the fact. They care what your documentation showed at the time payroll was set. Keep a one-page memo in your records every time you establish or change your salary: what role you performed, the market comparables you consulted, and why the number is reasonable.

A salary set with documented analysis is far more defensible than the same salary set without it — even if the number is identical.