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S-Corp Savings Calculator
What an S-Corp election saves in payroll tax, what it costs to run, and the point where the two cross.
An S-Corp election does not reduce your income tax. What it changes is how much of your profit carries payroll tax — and for a profitable owner-operated business, that difference can be substantial.
It is also routinely oversold. Running payroll and filing a second return cost money every year, whether the election saves anything or not, and below a certain profit those costs simply exceed the saving. This calculator shows both sides so you can see where your business actually sits.
Your numbers
Revenue minus business expenses, before paying yourself anything.
50% of profit as W-2 wages, the rest as a distribution.
Only affects the 0.9% Additional Medicare tax, which starts above $200,000.
Per year. Leave blank to see the payroll tax difference on its own.
What changes
On $110,820 — 92.35% of profit, which is what self-employment tax actually applies to.
Both halves. The $60,000 taken as a distribution carries no Social Security or Medicare.
That difference is not the saving. An S-Corp has to run payroll and file its own return, and both cost money every year. Put your annual cost in the last field to see what is actually left — it is the number that decides whether the election is worth making.
2026 rates. Social Security stops at $184,500 of wages or self-employment income; Medicare does not stop.
What this does not include
This compares payroll tax and nothing else. It is the right comparison for the question “is an S-Corp worth it”, and it is not a projection of your tax bill. Left out entirely:
- Income tax — federal and South Carolina. An S-Corp election does not change how much profit is taxed as income, only how much of it carries payroll tax.
- The QBI deduction — which a lower W-2 wage can move in either direction, and which is large enough to change the answer on its own.
- The deduction for half of self-employment tax, which softens the sole-proprietor figure above.
- Future Social Security benefits. A lower reported wage lowers them. That is a real cost paid decades later, and no calculator prices it for you.
- Whether the salary is defensible. There is no IRS percentage rule and no safe harbour — an unreasonably low salary is the single most common reason an S-Corp gets looked at. See what a reasonable salary actually means.
How the saving actually works
As a sole proprietor or a single-member LLC, your entire net profit is self-employment income. Self-employment tax applies to 92.35% of it — 12.4% for Social Security up to the annual wage base, and 2.9% for Medicare with no ceiling at all. Whether you withdraw the profit or leave it in the business makes no difference.
Elect S-Corp treatment and the profit splits in two. The part you pay yourself as a W-2 salary carries the same Social Security and Medicare, both halves. The part that comes out as a distribution carries neither.
That is the whole mechanism. Everything else about an S-Corp — the separate return, the payroll filings, the reasonable-compensation requirement — is the price of that split.
Why the salary is the hard part
If the split were free to choose, everyone would pay themselves a token salary and take the rest as distributions. The IRS requires shareholder-employees who provide services to take reasonable compensation first, and an unreasonably low salary is the most common reason an S-Corp attracts attention.
There is no percentage rule. No safe harbour, no 60/40, no published threshold — despite how often those are quoted. Reasonable compensation is what someone else would have to be paid to do your job, and it depends on the role, the hours, the industry and the region.
The practical consequence for this calculator: the salary field is where the answer is really decided. Set it aggressively low and the tool will show a saving the IRS may not agree with. Set it at something you could defend, and the number you see is the number you would actually keep.
The costs that decide it
An S-Corp has to run formal payroll — withholding, deposits, quarterly filings and year-end forms — and it has to file its own return on Form 1120-S, separate from your personal return. Both are annual costs, and neither is optional once the election is made.
That is why the last field matters more than it looks. A payroll tax difference of a few thousand dollars is not a saving of a few thousand dollars. It is a saving of whatever remains after the compliance cost, and for a business earning modestly above the point where the election starts to make sense, what remains can be very little.
The election is also not costless to unwind. Revoking it has its own timing rules and consequences, so electing early "to be ready" is usually worse than waiting a year and electing once the profit clearly supports it.
What the calculator will not tell you
It compares payroll tax and nothing else, which is the right comparison for deciding whether an S-Corp is worth it and the wrong one for estimating a tax bill.
Income tax is unaffected by the election and is not modelled here. The qualified business income deduction is affected — a lower W-2 wage can move it in either direction, and by enough to change the answer. So is your future Social Security benefit, which is calculated on reported wages: a lower salary for many years is a smaller benefit later, and that is a real cost no calculator prices for you.
Treat the result as a well-founded starting point for a conversation, not a decision. If the number looks large, the next question is whether the salary behind it is defensible. If it looks marginal, the answer is probably to wait.
S-Corp questions
At what profit does an S-Corp start to make sense?
There is no single figure, because it depends on the salary you could defend and what payroll and the extra return cost you — which is exactly why the calculator asks for both. Run your own numbers rather than relying on a threshold you read somewhere. If the result is marginal, waiting a year is usually better than electing early and unwinding it. We can look at it with you through S-Corp setup.
Is there an IRS rule for how much salary I have to take?
No. There is no percentage, no safe harbour and no published threshold, despite how often figures like 60/40 get quoted as if there were. The standard is reasonable compensation for the work you actually do. What a reasonable salary means goes through how it is established and documented.
Does an S-Corp reduce my income tax?
No. The election changes how much of your profit carries Social Security and Medicare tax. The profit is still taxed as income on your personal return either way. Anyone presenting an S-Corp as an income tax strategy is describing something else. Tax planning is where income tax actually gets addressed.
Can I elect S-Corp status part-way through the year?
Sometimes, but the election has its own deadline and the rules around a late election are specific. Timing is one of the more common things people get wrong. LLC to S-Corp conversion covers the process and the dates.
Do I have to run payroll if I am the only employee?
Yes. A shareholder who works in the business is an employee of it, and the salary has to go through real payroll with withholding, deposits and filings — not a transfer to yourself. That obligation is a large part of the running cost the calculator asks you to enter. We handle it through payroll services.
Is this calculator specific to South Carolina?
The payroll tax it models is federal, so the comparison holds anywhere. What is not modelled is state income tax, which does differ. We are based in Easley and work across the Upstate and virtually nationwide.
Not the question you had? The full tax FAQ covers more ground, and our client reviews say what the work is actually like.
More on S-Corp setup
This tool supports our s-corp setup service.
S-Corp Reasonable Salary: What the IRS Requires
Read articleHow Much Can an S-Corp Save You? Real Numbers Breakdown
Read articleS-Corp vs LLC: Which Saves More on Taxes in 2026?
Read articleWhen Should You Elect S-Corp Status? 5 Signs You're Ready
Read articleLLC to S-Corp Conversion: Process and Timeline
Read articleS-Corp Payroll Requirements: What You Have to Run Once You Elect
Read articleThe S-Corp Tax Return: What Form 1120-S Involves
Read articleHealth Insurance for S-Corp Owners: The W-2 Rule
Read articleTaking Money Out of an S-Corp: Salary, Distributions and Basis
Read articleRevoking an S-Corp Election: How It Works and What It Costs
Read articleTell us what you need
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