The one sentence that decides everything
Every S-corp owner salary argument comes down to a single standard: reasonable compensation is what "would ordinarily be paid for like services by like enterprises under like circumstances." The IRS states it plainly on its S corporation compensation page, and the Form 1120-S instructions add the enforcement hook: "Distributions and other payments by an S corporation to a corporate officer must be treated as wages to the extent the amounts are reasonable compensation for services rendered to the corporation."
Notice what is not in that sentence. There is no percentage. No mention of profit. No safe harbor. The number is a market wage for the work you personally performed, not a share of what the business earned. Every popular rule of thumb you have heard (60/40, 50/50, one third) is a shortcut people invented, and none of them appear anywhere in the Internal Revenue Code, the regulations, or a revenue ruling. Officers who perform services are statutory employees under Treas. Reg. 31.3121(d)-1(b), full stop. The only question an auditor asks is whether the wage you booked matches the work you did.
Why the IRS looks: the arbitrage, in 2026 numbers
A sole proprietor or single-member LLC pays 15.3% self-employment tax on essentially all net profit. An S corporation splits the same profit into two buckets. Salary carries FICA. Distributions carry none. Not Social Security, not Medicare, and (for an owner who materially participates) not the 3.8% net investment income tax either. That is the entire tax reason S corps exist, and it is also the reason the IRS audits them.
Here are the figures that actually drive the math for 2026.
| Item (tax year 2026) | Figure | Why it matters |
|---|---|---|
| Social Security (OASDI) tax | 12.4% total (6.2% employee + 6.2% employer) | Applies to W-2 salary only, never to distributions |
| Social Security wage base | $184,500 | Salary above this pays no more OASDI (up from $176,100 in 2025) |
| Medicare tax | 2.9% total (1.45% + 1.45%) | No wage cap |
| Additional Medicare Tax | 0.9% (employee only) | Wages over $200,000 single / $250,000 joint; employer withholds above $200,000 regardless of status |
| Combined FICA below the wage base | 15.3% | The cost of every extra dollar of salary |
| FUTA | 6.0% on first $7,000 of wages, usually 0.6% net after the 5.4% state credit | Roughly $42 per employee per year |
| Employment tax on distributions | 0% | The prize, and the reason for the rules |
| Section 199A (QBI) threshold | $201,750 single / $403,500 joint | Above it, the W-2 wage limit starts to bite |
| Section 199A phase-in complete | $276,750 single / $553,500 joint | Full W-2 wage limit applies |
| Standard deduction | $16,100 single / $32,200 joint | Used in the worked example below |
| Solo 401(k) elective deferral | $24,500 (plus $8,000 catch-up at 50+) | Employer share is capped at 25% of your W-2 salary |
| Form 1120-S due date (TY 2026) | March 15, 2027 | Late penalty is $260 per shareholder per month for returns filed in 2027 |
Sources: IRS Topic 751, the 2026 inflation adjustments release, Notice 2025-67 and the Form 1120-S instructions.
The nine factors the IRS and the courts actually use
When an examiner tests your salary, they work from the list the IRS publishes and that courts have repeatedly endorsed:
- Training and experience
- Duties and responsibilities
- Time and effort devoted to the business
- Dividend history (meaning your distribution history)
- Payments to non-shareholder employees
- Timing and manner of paying bonuses to key people
- What comparable businesses pay for similar services
- Compensation agreements
- The use of a formula to determine compensation
Underneath those factors sits the analytical move that decides most cases. The IRS asks where the company's gross receipts came from, and sorts them into three buckets: services of the shareholder, services of non-shareholder employees, and capital and equipment. Receipts traceable to your own labor should have been paid out as wages. Receipts traceable to your staff and your assets can legitimately flow out as distributions. That is why a solo consultant with no employees and no meaningful capital has almost no room to argue, while an owner of a 12-person agency with $2m of equipment has a great deal of room.
What the case law says (and it is not friendly)
Three cases tell you the range of outcomes. In Watson v. United States (8th Cir. 2012), a CPA and partner in a firm paid himself $24,000 of salary and took roughly $175,000 out as distributions. The court accepted the government's expert and reset the wage at $91,044. In Sean McAlary Ltd. v. Commissioner (T.C. Summary Opinion 2013-62), a real estate broker took a $0 salary and about $240,000 of distributions. The court imposed $83,200, computed as an hourly market rate times a full working year. In Radtke v. United States, a lawyer took $0 salary and $18,225 in dividends and had every dollar reclassified as wages.
Two lessons. First, a $0 salary with meaningful distributions is not a grey area, it is a losing position. Second, when the taxpayer has no evidence, the court simply adopts the IRS expert's figure. The person who arrives with a documented market comparison usually gets a number closer to their own.
The 30-50% rule of thumb: useful, but not a defense
The most common heuristics you will see are "pay 30-50% of profit as salary," the "60/40 split," and the "one third salary, one third distributions, one third retained" rule. They persist because they often land in roughly the right place for a service business with modest profit, and because they are easy to remember. Use them as a sanity check, never as your answer.
Two failure modes show why. Take an independent insurance agent with a book of business generating $600,000 of profit and one part-time assistant. A 40% rule produces a $240,000 salary that is far above any market wage for the actual work performed, and you have voluntarily paid Medicare tax you never owed. Now take a physical therapist whose clinic had a bad year and cleared $40,000. A 40% rule produces a $16,000 salary for a full-time licensed clinician, which is indefensible. The percentage moves with profit. Reasonable compensation moves with the labor market. Those are different variables, and the IRS only cares about the second one.
How to build a number that survives an audit
Do this once a year, in writing, and keep it in the corporate file:
- List your hats and hours. A typical owner is part CEO, part salesperson, part technician, part bookkeeper. Write down the hours in each role. This is the cost approach and it is the method most small S corps should use.
- Price each hat with real market data. The Bureau of Labor Statistics Occupational Employment and Wage Statistics gives free median and percentile wages by occupation and metro area. Screenshot the pages you used and date them.
- Blend to a single wage. If you spend 800 hours a year selling at a $52 market rate, 900 hours delivering at $65, and 300 hours on admin at $28, you get $41,600 + $58,500 + $8,400 = $108,500. That is a defensible salary, and it came from your calendar, not from your profit and loss.
- Apply the independent investor test. After paying you that wage, does a hypothetical outside shareholder still earn a fair return on the capital in the business? If yes, your wage is not eating the company's profit and the number holds. If the company is left with nothing, the wage is probably too high, not too low.
- Cross-check the result against your distributions. If distributions are more than roughly double the salary in a business with no employees and no capital, expect questions.
You can pressure test the outcome with our S corporation tax calculator, and if you are still deciding whether to elect S status at all, the LLC vs S-corp calculator shows the crossover point where the payroll compliance cost stops being worth it.
Worked example: $200,000 of profit, two salaries
A single-member S-corp marketing consultancy, single filer, no state income tax, $200,000 of profit before any owner compensation, no other income, standard deduction, no retirement contributions. Compare a $60,000 salary against a $120,000 salary.
| Line | Salary $60,000 | Salary $120,000 |
|---|---|---|
| Profit before owner comp | $200,000 | $200,000 |
| W-2 salary | $60,000 | $120,000 |
| Employer FICA (7.65%) | $4,590 | $9,180 |
| FUTA (0.6% of $7,000) | $42 | $42 |
| K-1 ordinary income (QBI) | $135,368 | $70,778 |
| AGI (wages + K-1) | $195,368 | $190,778 |
| Less standard deduction | ($16,100) | ($16,100) |
| Section 199A deduction (20% of QBI) | ($27,074) | ($14,156) |
| Taxable income | $152,194 | $160,522 |
| Federal income tax (2026 single brackets) | $29,125 | $31,123 |
| Employee FICA withheld | $4,590 | $9,180 |
| Employer FICA + FUTA | $4,632 | $9,222 |
| Total federal cost | $38,347 | $49,525 |
The lower salary saves $11,179. Of that, $9,180 is pure FICA (15.3% of the $60,000 shifted) and $1,999 is income tax, because a smaller salary leaves a bigger QBI base and therefore a bigger 199A deduction. Taxable income stays under the $201,750 threshold in both cases, so the W-2 wage limit never applies and the higher salary buys nothing back.
That $11,179 is exactly the temptation. Now price the downside: if an examiner decides $120,000 was the market wage, the corporation owes the $9,180 of employment tax, plus a failure-to-deposit penalty of up to 10% (15% after a notice and demand), plus interest, plus a possible 20% accuracy-related penalty under IRC 6662, plus amended 941s and W-2Cs and the accountant's bill for producing them. On a three-year look back the arithmetic turns ugly fast.
Salary floors that have nothing to do with the IRS
Even if audit risk were zero, several rules quietly punish a salary that is too low:
- Retirement. The employer contribution to a solo 401(k) or SEP is capped at 25% of your W-2 wages. On a $60,000 salary that is $15,000. On a $120,000 salary it is $30,000. With the 2026 elective deferral of $24,500 and an overall annual additions limit of $72,000, a starved salary can cost you far more in lost tax-deferred contribution room than it saves in FICA.
- The QBI wage limit. Once taxable income clears $201,750 single or $403,500 joint, the 199A deduction is capped at the greater of 50% of W-2 wages, or 25% of W-2 wages plus 2.5% of unadjusted asset basis. With $400,000 of QBI and no assets, you need $160,000 of W-2 wages to preserve the full $80,000 deduction. Underpay yourself and you lose 20 cents of deduction to save 2.9 cents of Medicare tax.
- Social Security credits. Distributions build no earnings record. A decade of $30,000 salaries permanently lowers your benefit.
- Borrowing. Underwriters look at W-2 income first. A low salary can shrink what a mortgage lender will lend you.
Red flags that pull an S corp into an exam
Certain patterns are visible to the IRS from the return alone, with no audit required: a profitable Form 1120-S with $0 on the "Compensation of officers" line; large shareholder distributions on Schedule K with no matching W-2; owner draws booked as "shareholder loans" with no note, no interest and no repayments; a salary paid as a single December lump sum after the year's profit is known; personal expenses run through the company and never added to wages; and 2% shareholder health insurance that never appears in Box 1 of the W-2 (it belongs there for income tax, though it is exempt from FICA, per IRS guidance).
The compliance calendar and the file you should keep
Once you set the number, run it like a real payroll. Pay yourself on a schedule (monthly or semi-monthly), deposit federal payroll taxes by the applicable EFTPS deadline, file Form 941 quarterly, and file Form 940 annually. Your Forms W-2 and W-3 for 2026 are due February 1, 2027 (January 31 falls on a Sunday), and the calendar-year Form 1120-S is due March 15, 2027, with a six month extension available on Form 7004. Late 1120-S filings run $260 per shareholder per month for returns filed in 2027, even when no tax is due.
Keep a one-page memo in the corporate records each year: your hours by role, the BLS or salary survey data you relied on, the resulting blended wage, a note on the company's capital and non-owner staff, and a board resolution setting the compensation. That file costs you an hour. It is also the single thing that turns an audit from an argument about your intentions into a discussion about your evidence, and evidence is what wins these cases. Model the number first with the LLC vs S-corp calculator, then document it.
This article is general information, not tax advice for your situation. Confirm figures against the primary IRS sources linked above before you file.