S-corp tax savings calculator

How the S-corp election creates savings

An S-corp isn't a different company — it's a tax status your LLC can request from the IRS by filing Form 2553 (our LLC vs S-corp guide covers the distinction in depth). The tax mechanics driving this calculator: a default LLC's profit is self-employment income, so it pays 15.3% self-employment tax — 12.4% Social Security plus 2.9% Medicare — on 92.35% of net profit, with the Social Security portion capped at the $184,500 wage base for 2026. After an S election, only your W-2 salary is subject to that 15.3% (split into employer and employee halves of payroll tax). Profit above the salary comes out as distributions, which owe ordinary income tax but no SE or payroll tax. The gap between those two treatments is the saving.

The reasonable-salary doctrine is the constraint

If you could set the salary at $0, everyone would elect. You can't: the IRS requires S-corp owner-employees to take reasonable compensation — roughly what you'd pay someone else to do your job — before taking distributions. There's no official percentage; examiners look at your role, hours, experience, and comparable market pay. Set the salary artificially low and the IRS can reclassify your distributions as wages and bill you the back payroll taxes plus penalties — S-corp compensation is one of the service's perennial audit areas. That's why this calculator defaults to 45% of profit and warns below ~35%: not because those numbers are rules, but because aggressive ratios are where scrutiny concentrates.

What this calculator deliberately ignores

• Income tax — you owe it on profits in both scenarios; the election changes SE/payroll tax, not your bracket.
• The 0.9% Additional Medicare Tax on wages and SE income above $200,000 (single) — it narrows the gap slightly at high incomes.
• QBI-deduction interactions — salary isn't qualified business income, so a bigger salary can shrink your Section 199A deduction and claw back part of the savings.
• State-level treatment — some states tax S-corps directly or don't recognize the election, and the extra tax-prep cost of Form 1120-S varies.

Each of these moves the answer by real dollars. Treat the number above as a first-pass screen for "is this worth a conversation with a CPA," not as the conversation itself.

When and how to elect

The election is Form 2553, generally due within 2 months and 15 days of the start of the tax year you want it to take effect (for a new company, from formation). Miss the window and it normally starts the following year, though the IRS grants late-election relief fairly routinely for reasonable cause. Practically, none of this has to happen on day one: form the LLC now, watch your profit, and elect in the year the savings clear the overhead. FilingDesk's flat $99 + state fee formation includes S-corp election assistance when you're ready, and our state guides cover the formation side state-by-state.

Frequently asked questions

How does an S-corp actually save on taxes?

A default LLC pays 15.3% self-employment tax on essentially all net profit. With an S-corp election, only the salary you pay yourself is hit with the 15.3% payroll tax — profit above the salary comes out as distributions, which owe income tax but no self-employment or payroll tax. The saving is roughly 14–15% of whatever you can legitimately take as distributions (a little under the headline 15.3% because self-employment tax is figured on 92.35% of profit), minus the payroll and tax-prep overhead the election adds.

What salary should I enter in the calculator?

A defensible market rate for the work you actually do — what you'd have to pay someone else to do your job. Many owners land somewhere around 40–60% of profit, but there is no safe-harbor percentage: the IRS looks at your role, hours, skills, and comparable pay. A token salary chosen purely to maximize distributions is the classic audit trigger.

Do S-corp distributions escape all tax?

No. Distributions avoid self-employment and payroll taxes, but they are still ordinary taxable income on your personal return. This calculator only measures the self-employment/payroll-tax difference — your income-tax bill exists in both scenarios.

Does electing S-corp status change my LLC?

No. Your company stays an LLC under state law with the same liability protection. Filing IRS Form 2553 only changes how the IRS taxes its profits. You can form the LLC now and make the election in a later year when the numbers justify it.

Why might an S-corp election not be worth it?

The election adds real overhead: a payroll service (typically $600–1,200 a year), a separate business tax return (Form 1120-S), and quarterly payroll filings. Below roughly $60–80k of consistent annual profit, that overhead tends to eat the payroll-tax savings. State-level taxes on S-corps and QBI-deduction interactions can also shrink the benefit — run your real numbers with a CPA.

At what income is an S-corp worth it?

As a rule of thumb, an S-corp election starts to pay off once your business nets roughly $60,000–$80,000 in consistent annual profit above a reasonable salary. Below that, the payroll and tax-prep overhead (often $1,000–$2,000/year) usually cancels out the self-employment-tax savings. Well above it, the savings compound — at $150k of profit the election can save several thousand dollars a year. Enter your numbers above to see your break-even.

How much does an S-corp save on taxes?

The savings come from the profit you take as distributions instead of salary: that portion escapes the 15.3% self-employment tax (Social Security + Medicare). On $120,000 of profit with a $70,000 reasonable salary, about $50,000 shifts to distributions, saving roughly $6,200 a year before overhead. Your real number depends on your salary, state, and QBI deduction — the calculator estimates it from your inputs.

What is a reasonable S-corp salary and how do I set it?

A reasonable salary is what you'd pay someone else to do your job — the IRS requires S-corp owner-employees to take it before distributions, and paying too little is the classic audit trigger. Set it from comparable market wages for your role and hours (job boards, BLS data, or a payroll provider's benchmark). A common approach is the '60/40' starting point — salary around 60% of profit — but the right number is facts-based, not a formula. Too low invites reclassification and back taxes.

This calculator and guide are general information, not legal or tax advice. Estimates are simplified and your real numbers will differ. FilingDesk is not a law firm or an accounting firm — talk to a CPA about your specific situation.