S-Corp Tax Savings Calculator: How Much Could You Save?
Estimating the self-employment tax savings from electing S corp status
The Basic Math Behind S-Corp Savings
When you operate as a sole proprietor or single-member LLC, every dollar of net profit gets hit with self-employment tax: 15.3% on the first $168,600 (for 2025) and 2.9% on everything above that. The 0.9% Additional Medicare Tax kicks in above $200,000 for single filers.
An S corporation splits your income into two buckets: W-2 salary (subject to payroll taxes) and distributions (not subject to payroll taxes). The savings come from the portion you take as distributions instead of salary.
A Quick Example
Say you’re a freelance consultant netting $200,000 a year after business expenses.
| Scenario | Self-Employment Tax | Additional Costs | Net Tax Saved |
|---|---|---|---|
| Sole Prop (all SE tax) | $26,532 | $0 | â |
| S Corp ($90K salary / $110K distributions) | $13,770 (payroll taxes) | ~$2,500 (payroll service, extra returns) | ~$10,262 |
That $10,000+ in annual savings is real. But the salary has to be “reasonable” for someone doing your work, in your industry, in your city. The IRS won’t accept a $30,000 salary for a consultant billing $200,000.
What Counts as “Reasonable” Salary?
There’s no bright-line rule. The IRS looks at several factors:
- What comparable businesses pay for similar work
- Your training, experience, and responsibilities
- Time and effort you put into the business
- What you’d have to pay someone else to do your job
- Industry salary data from the Bureau of Labor Statistics
In practice, most CPAs recommend setting salary at 40-60% of net profit when profits are between $80,000 and $250,000. Below $80,000 in profit, the S corp election often doesn’t save enough to justify the extra costs.
The Hidden Costs of S Corp Status
The savings aren’t free. You’ll need to budget for:
- Payroll processing: $500-$1,500/year for a service like Gusto or ADP
- Form 1120-S preparation: $1,000-$2,500 for a CPA to prepare the corporate return
- State franchise taxes: New York charges a fixed dollar minimum ($25-$4,500 depending on receipts). California charges a flat $800 minimum plus 1.5% of net income.
- Quarterly payroll filings: Forms 941, state withholding returns, unemployment returns
- Workers’ comp insurance: Required in most states once you’re running payroll
Rule of thumb: If your net business profit is under $60,000, the S corp election probably costs more than it saves. Between $60,000 and $80,000, it’s a toss-up. Above $80,000, the math usually works in your favor.
When NOT to Elect S Corp Status
S corps aren’t always the right move. Skip the election if:
- Your business income fluctuates wildly year to year
- You’re planning to bring on investors who need different share classes
- You have significant losses you want to deduct against other income (S corp loss deduction rules are stricter)
- You live in a state with a separate S corp tax (California’s 1.5% net income tax, for example)
- Your net profit is under $60,000 after expenses
How to Run Your Own Quick Estimate
- Start with your projected net profit (gross revenue minus all business expenses)
- Calculate self-employment tax as a sole prop: multiply net profit by 92.35%, then by 15.3% (up to $168,600) and 2.9% above that
- Set a reasonable salary at roughly 50% of net profit
- Calculate employer payroll taxes on that salary: 7.65% (FICA) plus state unemployment
- Subtract $3,000-$4,000 for additional S corp compliance costs
- Compare the two numbers
For a personalized analysis that accounts for your specific state taxes, QBI deduction impact, and retirement contribution strategy, schedule a consultation. The S corp decision affects multiple parts of your tax picture, and a quick calculator can’t capture all the moving parts.