An S corporation owner who works in the business must be paid a salary, subject to payroll tax. Remaining profit can be distributed, and distributions are generally not subject to payroll tax.
That difference is the entire appeal, and it creates an obvious incentive: minimise salary, maximise distributions. Tax authorities are aware of the incentive, and unreasonably low compensation is among the most consistently examined positions in small business taxation.
What changed in 2026
- Enforcement attention persisted. Reasonable compensation remained a recurring examination focus.
- Compensation analysis tooling spread. Services producing defensible salary determinations became more accessible.
- The QBI interaction complicated optimisation. Salary affects the qualified business income deduction, so minimising it is not straightforwardly optimal — see the QBI deduction.
- Formation costs stayed a real consideration. Payroll administration and additional filings continued to set a practical minimum profit level.
The mechanics
An S corporation is a pass-through: profit flows to the owner's personal return regardless of whether it is distributed.
The tax difference is in payroll tax rather than income tax.
|
Salary |
Distribution |
| Income tax |
Yes |
Yes |
| Payroll tax |
Yes |
Generally no |
| Counts toward retirement plan limits |
Yes |
No |
| Counts toward the QBI wage test |
Yes |
No |
| Requires payroll administration |
Yes |
No |
Income tax is the same either way. The saving is only on payroll tax, which is why the structure matters most at profit levels where that saving is meaningful.
Compare with a sole proprietorship, where essentially all net profit is subject to self-employment tax — see payroll taxes for the self-employed.
What reasonable means
There is no formula, no safe percentage, and no threshold that guarantees acceptance. Reasonableness is assessed on the facts.
Factors that get considered: the nature of the work, the owner's qualifications and experience, hours worked, what comparable positions pay in the same industry and region, the business's revenue and profitability, and what the business would pay someone else to do the same job.
That last framing is the most useful test: what would you have to pay to hire someone to do what you do? If the honest answer is substantially more than you are paying yourself, the position is weak.
The heuristics people circulate — a fixed percentage of profit, or a round number — have no authority. They are approximations that may or may not be defensible in a specific case.
Document the reasoning
The practical defence is contemporaneous documentation of how you arrived at the figure.
That means recording the comparable salary data you consulted, the description of your actual duties and hours, and the reasoning connecting them. A compensation analysis report produced at the time is stronger than a reconstruction afterwards.
The risk if the position fails is reclassification of distributions as wages, with back payroll tax, interest, and penalties. That can exceed several years of the savings that motivated the position.
When the structure is worth it
Below a certain profit level, the costs exceed the savings.
The costs are real and recurring: payroll processing, an additional tax return for the entity, higher accounting fees, and the administrative burden of running payroll for one person.
The saving is payroll tax on the distributed portion, which grows with profit. Below a profit level where that saving comfortably exceeds several thousand in annual costs, the structure is not worth it.
The QBI interaction complicates the calculation further, because reducing salary increases qualified business income while also reducing wages that may be needed for the wage test above certain income thresholds. Optimising both simultaneously is genuinely a professional exercise.
Common mistakes
- A salary chosen from an online rule of thumb. No authority behind those figures.
- No documentation. Your defence is the reasoning you recorded.
- Taking distributions while paying no salary at all. The clearest examination trigger.
- Ignoring the QBI interaction. Minimising salary is not automatically optimal.
- Electing the structure at low profit. Costs exceed savings.
- Forgetting payroll compliance. Filings and deposits are obligations with their own penalties.
- Assuming the election is costless to reverse. Revoking has consequences.
FAQ
Is there a safe percentage?
No. Percentages circulate widely and have no authority. Reasonableness is judged on facts specific to your role and industry.
What profit level justifies the structure?
It depends on your costs and the saving, and the practical threshold is where payroll tax savings comfortably exceed several thousand annually in added expense. Model it rather than adopting a rule.
What happens if my salary is found unreasonable?
Distributions may be reclassified as wages, with back payroll tax, interest, and penalties. It can be expensive relative to the savings.
Does this affect retirement contributions?
Yes — plan contribution limits are typically based on salary, so a very low salary limits how much you can contribute, which is a real cost of minimising it.
Where to go next
For the deduction that interacts with the salary decision, read the QBI deduction. For the alternative structure, payroll taxes for the self-employed, and for retirement plans affected by salary level, SEP-IRA vs solo 401(k).
This is general information, not tax advice. Reasonable compensation is fact-specific and examined; consult a qualified professional.