S-Corp Comparison Calculator
By Sanjeet Singh, CPA
See if S-Corp election could save you money on self-employment tax.
Enter your net self-employment income to compare.
What Is S-Corp Election and Who Is It For
An S-Corp is not a new type of business you create from scratch. It is a tax election you make with the IRS by filing Form 2553 for an LLC or C-Corp you already own. The business itself does not change — only how the IRS taxes it changes.
The core advantage is the salary/distribution split. As a sole proprietor or single-member LLC, you pay self-employment tax (15.3%) on virtually all of your net income. With an S-Corp election, you split your income into two buckets: a reasonable salary (subject to payroll taxes) and distributions (subject to income tax only, with zero self-employment tax). The distributions are where the savings come from.
This matters most for freelancers, consultants, and independent contractors who have consistent net self-employment income above approximately $60,000 per year. Below that threshold, the administrative costs of running payroll and filing the additional S-Corp tax return (Form 1120-S) tend to eat up whatever SE tax savings you gain.
S-Corp election is not for everyone. If your income is irregular, if you are just starting out, or if you prefer minimal tax complexity, staying as a sole proprietor or standard LLC is often the better move. The calculator above helps you see whether the numbers work for your specific situation.
When the Math Actually Works — the Break-Even Point
The SE tax formula is straightforward: net self-employment income × 92.35% × 15.3%. With an S-Corp, you only pay that rate on the salary portion. The rest flows through as distributions, free of SE tax. But S-Corp admin costs — payroll processing, Form 1120-S filing, and accountant review — typically run $2,500 to $4,500 per year. That overhead is the hurdle your tax savings need to clear.
Scenario 1: $60K Net Self-Employment Income
As a sole proprietor, SE tax is approximately $60,000 × 92.35% × 15.3% = $8,478. With S-Corp election at a 60% salary ($36,000 salary, $24,000 distribution), SE tax drops to roughly $36,000 × 92.35% × 15.3% = $5,087. That is a gross savings of about $3,391. After admin costs of $3,000, your net benefit is approximately $391 — essentially break-even. At this income level, S-Corp is thin and may not be worth the added complexity.
Scenario 2: $100K Net Self-Employment Income
Sole proprietor SE tax: $100,000 × 92.35% × 15.3% = approximately $14,130. With S-Corp at 60% salary ($60,000 salary, $40,000 distribution), SE tax on salary is roughly $8,478. Gross savings: approximately $5,652. After $3,000 in admin costs, your net benefit is around $2,652 per year. The savings now clearly exceed the overhead.
Scenario 3: $150K Net Self-Employment Income
Sole proprietor SE tax: $150,000 × 92.35% × 15.3% = approximately $21,194. With S-Corp at 60% salary ($90,000 salary, $60,000 distribution), SE tax on salary is roughly $12,717. Gross savings: approximately $8,477. After $3,500 in admin costs, your net benefit is around $4,977 per year. This is a strong case for S-Corp election — nearly $5,000 in annual savings after all costs.
How W-2 Wages Affect the Calculation
This is where most S-Corp calculators get it wrong, and where Qalm gives you a more accurate picture. If you have W-2 income from an employer, those wages count first toward the Social Security wage base ($176,100 for 2025). Your freelance income stacks on top.
Why does this matter? The 12.4% Social Security portion of SE tax only applies up to the wage base. If your W-2 wages already push you past or near that cap, your freelance income may only owe the 2.9% Medicare portion of SE tax — not the full 15.3%. That dramatically shrinks the potential savings from S-Corp election.
For example, consider someone earning $150,000 in W-2 wages plus $80,000 in freelance income. Their W-2 wages already cover most of the Social Security wage base, so the freelance income largely only triggers Medicare tax. S-Corp savings in that scenario are much smaller than for a pure freelancer earning $80,000 with no W-2. The difference can be thousands of dollars in overestimated savings if the W-2 is not factored in.
This is exactly why the calculator above includes a W-2 wages field. Entering your W-2 income gives you a realistic picture of what S-Corp election would actually save — not a theoretical maximum.
The Reasonable Salary Requirement
The IRS requires S-Corp owners who provide services to the business to pay themselves a "reasonable salary" before taking any distributions. You cannot simply pay yourself a token salary and distribute the rest — the IRS actively monitors this.
"Reasonable" means a salary that reflects the market rate for someone with your role, experience, industry, and geographic location. If you are a senior software engineer, the IRS expects your salary to reflect what a company would pay for that role. If you are a freelance copywriter, the expectation is different — but still grounded in market data.
The audit risk is real. If your salary is too low relative to your total S-Corp income, the IRS can reclassify distributions as wages, hit you with back payroll taxes, and add penalties and interest. This is the highest-audit-risk area of S-Corp compliance.
If you are unsure what constitutes a reasonable salary for your situation, a CPA review of your salary determination is worth the investment. The Qalm team includes CPA credentials and can point you in the right direction. Getting this piece right protects the entire S-Corp strategy.
Frequently Asked Questions
At what income level does S-Corp make sense?
Most tax professionals agree that S-Corp election starts making financial sense around $60,000 to $80,000 in net self-employment income per year. Below $60,000, the administrative costs of payroll processing and filing Form 1120-S ($2,500 to $4,500 annually) tend to offset any SE tax savings. At $80,000 and above, the savings typically clear $2,000 or more after admin costs, making the added complexity worthwhile. Use the calculator above with your actual income to see where you fall.
How does having a W-2 job affect my S-Corp savings?
Your W-2 wages count first toward the Social Security wage base ($176,100 for 2025). If your W-2 income already covers most or all of that cap, your freelance income may only owe the 2.9% Medicare portion of SE tax rather than the full 15.3%. This significantly reduces the potential savings from S-Corp election. For example, someone with $150,000 in W-2 wages and $80,000 in freelance income would save far less from S-Corp than a pure freelancer earning $80,000 with no W-2. Enter your W-2 wages in the calculator above to get an accurate comparison for your situation.
What does "reasonable salary" mean and how do I determine mine?
The IRS requires S-Corp owners to pay themselves a salary that reflects what someone with their role, experience, and industry would typically earn as a W-2 employee. The IRS evaluates factors like industry pay norms, years of experience, complexity of the work, and the time you spend. A senior software engineer might justify a salary of $120,000 to $140,000 on $200,000 in total income, while a newer freelance copywriter earning $60,000 might need to pay most of that as salary. Getting this wrong is the highest audit risk in S-Corp compliance — a CPA review of your salary determination is a worthwhile investment.
What are the ongoing costs of running an S-Corp?
The typical annual costs include payroll processing through a provider like Gusto, Paychex, or ADP ($1,500 to $3,000 per year), filing the S-Corp tax return Form 1120-S ($500 to $1,500), and accountant review and advisory ($500 to $1,000). Total direct costs generally run $2,500 to $4,500 per year, plus roughly 5 to 10 hours of your time. These costs are tax-deductible business expenses, but they represent a real overhead that your SE tax savings need to exceed for the election to be worthwhile.
Can I elect S-Corp mid-year?
The standard deadline to elect S-Corp status for the current tax year is within 75 days of the start of the tax year (March 15 for calendar-year filers). However, the IRS does allow late elections under certain conditions via Revenue Procedure 2013-30, which provides relief if you had reasonable cause for missing the deadline. Some businesses file Form 2553 mid-year with a late-election statement and are approved. If you have missed the deadline, consult a tax professional about whether a late election is viable for your situation.
Does an LLC need to do anything before electing S-Corp?
If you already have a single-member LLC, you can elect S-Corp tax treatment by filing IRS Form 2553. The LLC itself does not change — it remains an LLC under state law, but the IRS will tax it as an S-Corp. You do not need to form a new entity. However, you will need to set up payroll, obtain an EIN if you do not have one, and ensure your operating agreement is compatible with S-Corp requirements (for example, S-Corps can only have one class of stock). Some states also require a separate S-Corp election at the state level, so check your state requirements.
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Qalm provides estimates for planning purposes. This is not tax advice. Consult a qualified tax professional for your specific situation.