An S-Corp election allows an LLC or corporation to be taxed under Subchapter S of the Internal Revenue Code. The practical effect: business profit is split into W-2 salary and shareholder distributions. Only the salary portion is subject to the 15.3% payroll tax (Social Security + Medicare). Distributions pass through to the owner's personal return but bypass self-employment tax entirely.
That split is where the savings come from. A sole proprietor earning $100K in net profit pays roughly $14,100 in SE tax. The same owner operating as an S-Corp with a $50K salary pays about $7,650 in payroll tax on the salary portion, while the remaining $50K in distributions incurs zero SE tax. The election is made by filing Form 2553 with the IRS, typically by March 15 of the target tax year.
There is a constraint: the IRS requires S-Corp owners to pay themselves a "reasonable salary" before taking distributions. Setting salary too low invites reclassification of distributions as wages, plus back taxes and penalties. For most service-based businesses, a salary in the range of 40-60% of net income satisfies this requirement.
📊 The Short Answer
If your net business income is $80K-100K+, S-Corp election can save you $3,000-6,000 per year in self-employment taxes. Below $60K, the administrative costs usually outweigh the savings. Use our S-Corp Tax Savings Calculator to see your specific numbers.
How S-Corp Saves You Money
As a sole proprietor, you pay self-employment tax (15.3%) on 92.35% of your net business income. On $100K, that's roughly $14,100.
With S-Corp, you take a $50K salary and $50K in distributions. Payroll tax on $50K salary = ~$7,650. Distributions: $0 in SE tax. Total SE tax savings: ~$6,400 before S-Corp costs. Minus typical S-Corp costs of ~$2,000/year, your net savings is around $4,400/year.
The Reasonable Salary Rule
The IRS requires your salary be reasonable — what a comparable employee would earn for the same work. You can't pay yourself salary and distributions. Read our comprehensive blueprint on how to calculate an audit-proof S-Corp reasonable salary in 2026 using IRS-approved valuation methods.
When S-Corp Is Worth It
| Net Income | Est. Savings | Costs | Net | Verdict |
|---|---|---|---|---|
| $50K | ~$1,400 | ~$2,000 | -$600 | ❌ No |
| $80K | ~$3,500 | ~$2,000 | $1,500 | ⚠️ Maybe |
| $100K | ~$5,400 | ~$2,000 | $3,400 | ✅ Yes |
| $150K | ~$8,000 | ~$2,000 | $6,000 | ✅ Def |
🧮 Calculate Your Savings
Use our interactive tool with reasonable salary slider and S-Corp cost estimates.
📊 Try the S-Corp Tax Savings CalculatorQuick Answer
If your net business income is $80K-100K+, S-Corp election can save you $3,000-6,000 per year in self-employment taxes. For example, on $100K income, you pay roughly $14,100 SE tax as sole proprietor vs. $7,000 as S-Corp (50K salary + 50K distributions) — net savings of $4,400 after $2,000 typical S-Corp costs. Below $60K, administrative costs usually outweigh savings.
How to Switch to S-Corp
Step 1: Form or already have an LLC. Step 2: File Form 2553 by March 15. Step 3: Set up payroll. Step 4: Business bank account. Step 5: File Form 1120-S annually.
The QBI Deduction
The Section 199A deduction lets you deduct up to 20% of business income. With S-Corp, QBI is based on net profit minus salary, which can reduce the deduction. For most people, SE tax savings still beat this reduction.
FAQ
Yes, but Form 2553 must be filed by March 15 for that tax year, or within 75 days of forming. Late elections possible with reasonable cause.
Generally, forming an LLC does not change your federal income tax burden, as profits pass directly through to your personal return in both structures. However, certain states levy mandatory minimum franchise taxes on LLCs—such as California's $800 annual fee—so you must verify local regulations.
If the IRS determines your S-Corp salary is unreasonably low, you could be liable for substantial back payroll taxes, compounded by severe penalties and interest. To mitigate this risk, maintain a salary between 40-60% of your net business income and meticulously document comparable industry compensation data.