Updated August 14, 2026. Quick answer: a reasonable salary for a part-time business is the market rate for the work multiplied by the hours you actually work — not a percentage of profit. The IRS names both of those inputs in its own factor list and names no percentage anywhere. In the worked example below, 8 hours a week at $85 an hour is $31,280, which happens to be 35% of a $90,000 profit. The popular sixty-percent rule would put it at $54,000 and cost you $3,476 a year in payroll tax the hours cannot justify.
S corporation return (Form 1120-S) for 2025, read line by line: Form 1120-S lines 7 to 12, Form 1120-S Schedule K lines 1 to 4 and Form 1120-S Schedule M-2.
Partnership return (Form 1065) for 2025, read line by line: Form 1065 lines 9 and 10.
More IRS forms and schedules, read line by line: Form W-3 instructions and Form 7004 instructions.
More IRS forms and schedules, read line by line: Form 941 instructions.
More IRS forms and schedules, read line by line: Form 1120 instructions, Form 1120-S instructions and Form 7203 instructions.
The shareholder’s Schedule K-1 (Form 1120-S), boxes 13 to 19: Schedule K-1 box 13, Schedule K-1 box 16 and Schedule K-1 box 17 code V.
The shareholder’s Schedule K-1 (Form 1120-S), read box by box: Schedule K-1 box 1 and Form 1120-S K-1 overview.
More IRS forms and schedules, read line by line: Form 2553 instructions.
The rule, and the order it runs in
“S corporations must pay reasonable compensation to a shareholder-employee in return for services that the employee provides to the corporation before non-wage distributions may be made to the shareholder-employee”
IRS, S corporation compensation and medical insurance issues
Read the order: compensation first, distributions after. The Form 1120-S instructions put it in mandatory form.
“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”
IRS, Instructions for Form 1120-S
Neither sentence contains a percentage, and neither does the rest of the IRS page.
What the test actually asks
“The key to establishing reasonable compensation is determining what the shareholder-employee did for the S corporation by looking to the source of the S corporation’s gross receipts”
IRS, S corporation compensation and medical insurance issues
That is a question about your hours and your rate, not about your margin. And the same page states the other half explicitly — receipts you did not personally generate belong on the distribution side.
“To the extent gross receipts are generated by services of non-shareholder employees and capital and equipment, payments to the shareholder would properly be treated as non-wage distributions that are not subject to employment taxes”
IRS, S corporation compensation and medical insurance issues
For a part-time business that is the whole argument. If the business earns while you are not working — a product, a licence, an employee, equipment — those receipts are not your labour, and the salary that answers for your labour is smaller than the profit by design.
Pro-rating, with the arithmetic shown
8 hours a week for 46 weeks is 368 hours. At $85 an hour — the rate a competent person doing this job is paid, which is the figure you have to be able to show — the salary is $31,280. The same rate at a full-time 40 hours for 52 weeks would be $176,800, and the pro-rated figure is that number scaled by the hours you really work.
Payroll tax on $31,280, counting both halves because you are both, is $4,786. Two of the IRS factors are exactly the two numbers you just multiplied.
“Time and effort devoted to the business”
IRS, S corporation compensation and medical insurance issues
“What comparable businesses pay for similar services”
IRS, S corporation compensation and medical insurance issues
What happens when the salary is set by cash flow instead
The case the IRS cites for reclassification is an accountant whose corporation paid him $24,000 a year while the practice distributed far more. The government valued the work at a market rate.
“At trial, the government’s expert, Igor Ostrovsky, opined that the market value of Watson’s accounting services was approximately $91,044 per year for 2002 and 2003”
David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012)
That is 3.8 times the salary being paid, and the figure was built from compensation surveys for the profession — the same construction as the calculator above. The court did not substitute a share of profit; it substituted a rate for the work.
What to keep, so the number survives a question
- The rate, with its evidence. Two or three job postings, a staffing agency quote or a published wage survey for the same work in your area, saved with the date you pulled them.
- The hours, contemporaneously. A calendar or a time log written as you went, not reconstructed in March.
- The split of the receipts. Which revenue came from your hands and which came from an employee, a product or equipment.
- The board minute or written resolution setting the salary before the year, not after it.
Whether the election is worth running at all at your profit is a separate calculation, and if you are 62 or older the salary you choose also moves your Social Security in two directions at once: that page.
What this page will not tell you
- There is no safe-harbour percentage, and we will not invent one. The IRS publishes factors and no formula. Any page quoting a fixed share of profit as the rule is quoting a habit, not an authority.
- We publish no wage data. The market rate is yours to evidence for your occupation and your area; this page will not supply a number to be cited back.
- Reasonableness is a facts-and-circumstances test decided case by case. A defensible method is not a guarantee, and the examples here are arithmetic, not advice about your business.
- State payroll rules are not covered. Unemployment insurance, workers compensation and state minimum-wage rules can all bite an owner-employee and none of them is modelled.
Figures verified against the IRS page S corporation compensation and medical insurance issues, the IRS Instructions for Form 1120-S, 26 U.S.C. §§ 3101 and 3111, SSA’s 2026 contribution and benefit base (90 FR 49047 and SSA’s contribution and benefit base page) and the Eighth Circuit opinion in Watson on September 30, 2026.
Sources
Every figure on this page is computed from the text quoted below. Each row links the document it was read from, as read on August 14, 2026.
| What it establishes | Source |
|---|---|
| Reasonable compensation must be paid BEFORE non-wage distributions are made. | IRS, S corporation compensation and medical insurance issues |
| The instruction is mandatory in form: distributions to an officer MUST be treated as wages up to reasonable compensation. | IRS, Instructions for Form 1120-S |
| The test is what the shareholder-employee did, judged by the source of the corporation’s gross receipts. | IRS, S corporation compensation and medical insurance issues |
| Receipts generated by other employees or by capital and equipment properly belong to distributions, not wages. | IRS, S corporation compensation and medical insurance issues |
| Two of the IRS’s own listed factors are time and effort devoted to the business and what comparable businesses pay — the two inputs a pro-rated salary is built from. | IRS, S corporation compensation and medical insurance issues |
| Comparable pay for similar services is an IRS-listed factor. | IRS, S corporation compensation and medical insurance issues |
| Watson’s corporation paid him $24,000 a year while the government’s expert valued his services at about $91,044 a year. | David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012) |
| The reasonable figure was built from compensation surveys for the profession — a market rate, not a share of profit. | David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012) |
| The employee half of OASDI is 6.2% of wages. | 26 U.S.C. § 3101(a) |
| The employer half of OASDI is another 6.2% of the same wages — and an owner-employee pays both halves. | 26 U.S.C. § 3111(a) |
| The hospital insurance (Medicare) tax is 1.45% of wages for the employee and another 1.45% for the employer, which with the two 6.2% OASDI halves gives the 15.3% used in the payroll-tax figures above. | 26 U.S.C. § 3101(b) and § 3111(b) |
| The 2026 OASDI contribution and benefit base is $184,500. | SSA, Cost-of-Living Increase and Other Determinations for 2026, 90 FR 49047 (Nov. 3, 2025) |
General consumer information, not financial, tax or legal advice. Federal and state rules are as published by the cited source on 2026-08-14 and change; your own facts govern, and an S-corporation election is a decision to take with a tax professional who has seen your books.
More Business Owners & Executives guides: see the full 29-page index.