S-Corp vs Sole Proprietor: When the Election Actually Pays
The S-corp election saves payroll tax but costs real money to run. Here is where the line falls, and the three things that quietly erase the saving.
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Every freelancer eventually gets told they are "leaving money on the table" by not electing S-corp status. Sometimes that is true. Often the person saying it is selling formation services.
Here is the actual mechanism, and the three things that quietly eat the saving.
What the election actually changes
As a sole proprietor, every dollar of profit is subject to self-employment tax at 15.3% on 92.35% of it. There is no way around that.
Elect S-corp status and your business pays you a salary. That salary attracts the same payroll tax. But whatever is left over comes to you as a distribution, and distributions are not subject to payroll tax at all.
So on $120,000 of profit with a $60,000 salary, you have moved $60,000 out of the reach of payroll tax. At roughly 15.3%, that is about $7,800 saved.
That is the pitch. Now the costs.
What it costs to run
An S-corp is not a checkbox. It is a separate tax entity with obligations:
| Cost | Typical range |
|---|---|
| Payroll service | $500–900/year |
| Form 1120-S preparation | $800–1,500/year |
| State franchise or filing fees | $0–800/year |
| Registered agent, if you use one | $100–300/year |
Call it $1,500–3,000 a year before anything unusual. In California, the $800 minimum franchise tax applies whether you made money or not.
The rough shape of the answer
Payroll tax saving scales with profit. The costs are close to fixed. So there is a profit level below which the election loses money and above which it starts to pay — and it moves depending on your salary and your state.
Three things that erase the saving
1. The salary is not yours to choose freely
This is where most of the bad advice lives. The IRS requires reasonable compensation: roughly what it would cost to hire someone to do the work you actually do. Not a percentage. Not a formula. What the job is worth.
People set a $20,000 salary on $150,000 of profit, save a fortune on paper, and then discover that the IRS has been litigating this since the 1970s and mostly wins. When it reclassifies distributions as wages, you owe the back payroll tax plus penalties plus interest.
The uncomfortable truth is that the more aggressive your salary, the larger your saving and the larger your exposure — and those are the same dial.
2. It shrinks your QBI deduction
This one is genuinely under-discussed. The Section 199A deduction is worth up to 20% of your qualified business income. Wages are not qualified business income.
So every dollar you move from distribution to salary is a dollar that keeps its QBI treatment, and every dollar you move the other way loses it. Depending on your income, a chunk of the payroll tax saving comes straight back out as a smaller deduction. Our calculator models payroll tax only, and says so, because modelling the interaction properly needs your full return.
3. Your Social Security benefit is based on your salary
Payroll tax is not purely a cost — it buys future Social Security benefits, which are calculated on your 35 highest-earning years. Pay yourself a small salary for a decade and you have reduced your eventual benefit.
Whether that matters depends on how far you are from retirement and what else you are doing with the money. For someone in their 50s it is a real consideration. For someone in their 20s who invests the difference, much less so.
The election is not free to undo
Revoking an S-corp election generally locks you out of re-electing for five years without IRS consent. Treat it as a multi-year decision, not something to try for a year and see.
When it clearly does not make sense
- Your profit is under about $50,000. The fixed costs eat the saving.
- Your income swings wildly year to year. The costs are constant; the savings are not.
- You would not pay yourself a defensible salary. If the only way it works is an unreasonably low salary, it does not work.
- You are not ready for payroll admin. Missed filings carry their own penalties.
When it usually does
- Profit comfortably above the breakeven, with headroom.
- Stable, predictable income.
- A salary you would be happy to defend in writing.
- You already work with an accountant who will handle the return.
Run your own numbers before deciding, and ask a CPA to model the QBI interaction on your actual return. The payroll tax saving is the easy half of this calculation. The part that catches people is everything around it.