LLC vs S-Corp: When the S-Corp Election Actually Saves You Money

The phrase "LLC vs S-corp" makes it sound like two competing business structures you have to choose between. It isn't. An LLC is a legal structure; an S-corp is a tax election. A single-member LLC can elect S-corp taxation while staying an LLC in the eyes of state law. The real question is simply this: does that election save more money than it costs? For some business owners the answer is a clear yes. For others — especially those below a certain profit threshold — the math goes the wrong way.

The confusion, cleared up

When you form a single-member LLC and do nothing else, the IRS ignores the LLC as a separate entity by default. Your LLC's net profit flows directly onto your personal tax return as if you were a sole proprietor. That's straightforward, but it comes with a cost: all of that net profit is subject to self-employment (SE) tax before you even get to income tax.

A separate election — made by filing Form 2553 — tells the IRS to treat your LLC like an S corporation for federal tax purposes. The entity stays an LLC under state law, but the IRS now applies S-corp tax rules. The key difference in those rules is how you're allowed to split your income, and that split is where the savings live.

How self-employment tax works in a default LLC

Self-employment tax exists because sole proprietors and single-member LLC owners are both the employer and the employee. A regular employee pays 7.65% FICA and their employer pays another 7.65%, for a combined 15.3%. As a self-employed person, you pay both sides.

The rate breaks down as: 12.4% Social Security (applied only up to the annual wage base, which is roughly $168,600 in 2024) plus 2.9% Medicare (applied to all earnings, with a 0.9% surtax on high earners). One small technical note: SE tax is calculated on 92.35% of net profit, not 100%, because you're allowed to deduct half of the employer-equivalent portion before computing the base. And that same half — the employer-equivalent portion — is deductible from your income tax.

At a practical level: if your LLC earns $120,000 net, you owe roughly $16,900 in SE tax on top of your income tax bracket. That figure motivates most of the interest in the S-corp election.

How the S-corp election changes things

Under S-corp rules, you're required to pay yourself a W-2 salary as an employee of your own company. That salary is subject to standard payroll taxes (FICA) — the same 15.3% split as any employer-employee relationship. Any profit left over above that salary can be paid out as an owner distribution, and distributions are not subject to FICA or self-employment tax.

That distribution is the exemption. By routing part of your income through the distribution category rather than the salary category, you avoid FICA on that slice. The bigger the difference between your total profit and your salary, the larger the tax-free distribution — and the larger the savings.

The reasonable-salary requirement

The IRS is well aware of the obvious move: pay yourself $1 in salary, take everything else as a distribution, and eliminate nearly all payroll tax. This is explicitly not allowed. The IRS requires that your W-2 salary be reasonable compensation for the actual work you do in the business.

Reasonable salary is determined by what you'd have to pay someone else to perform the same role. A freelance web developer running a $200,000 S-corp can't pay themselves $30,000 — a market-rate developer earns more. If the IRS audits and finds the salary artificially low, it can reclassify distributions as wages, assess back payroll taxes, plus penalties and interest. It's one of the more actively audited areas for small business returns.

In practice, most advisors suggest a salary somewhere in the range of 40–60% of net profit for a professional services business, though the real standard is market rate for the role. The salary you choose also interacts with the qualified business income (QBI) deduction: a lower salary increases your QBI deduction (which is based on W-2 wages paid), so there's an offsetting tax benefit to consider. The optimum salary is genuinely a calculation, not simply "as low as the IRS will accept."

The costs of running an S-corp

The election itself is free, but the ongoing overhead is not. Operating as an S-corp — even inside an LLC wrapper — adds real complexity:

• Payroll service. You must run a formal payroll to issue W-2s. A payroll service (Gusto, ADP, QuickBooks Payroll, etc.) typically costs $500–1,500/year for a single-employee setup.
• Separate business tax return. S-corps file Form 1120-S, a separate federal return with its own preparation cost. Add state equivalents where applicable. Expect to pay an accountant $800–1,500 more per year than a Schedule C filer would.
• Bookkeeping. Separating salary from distributions requires clean books. Many owners hire a bookkeeper or upgrade their software to handle payroll journal entries properly.
• State fees and taxes. Some states (notably California) impose a separate minimum tax or gross-receipts tax on S-corps that erases part of the federal savings. Check your state before electing.

Total added admin cost: commonly $1,500–3,000 per year for a lean single-person operation. That number sets your breakeven point.

The breakeven math

The S-corp election only makes financial sense if the SE-tax savings exceed the added costs. Because the savings scale with profit and the costs are relatively fixed, there's a natural breakeven zone:

• Below about $40,000–50,000 in net profit, the election almost never pays off. The tax savings on a modest income are smaller than the admin overhead.
• In the $50,000–70,000 range, it's marginal — worth running the numbers with your accountant, but don't assume it's a win.
• Above roughly $70,000–80,000, the savings typically exceed the costs and the election starts to make sense for most professions.

Worked example: $120,000 net profit

Here's the same business at $120,000 annual net profit, compared under both structures:

Gross payroll-tax saving: roughly $6,200. Now subtract the overhead:

Gross saving minus admin: about $4,200. But there's one more adjustment: the employer half of the FICA on the salary ($70,000 × 7.65% ≈ $5,355) is deductible as a business expense, which reduces taxable income and creates a small income-tax benefit. After accounting for this, the realistic net saving in this example is somewhere in the range of $3,000–4,000 per year.

Not transformational, but real — and it compounds year over year. At $200,000+ net profit, the savings grow substantially because the distribution bucket grows while the salary stays roughly constant.

Other caveats to keep in mind

State rules vary significantly

California imposes a 1.5% S-corp franchise tax plus an $800 minimum, which can easily consume $2,000–3,000 of federal savings. New York City has its own business income tax that S-corps don't escape. Always check state-level implications before electing.

The QBI deduction interaction

The Section 199A qualified business income (QBI) deduction allows eligible pass-through business owners to deduct up to 20% of qualified business income. The deduction is limited to 50% of W-2 wages paid (for high-income taxpayers in service businesses). A higher salary can actually increase your QBI deduction, which partially offsets the payroll tax on the salary. This is why the "minimize the salary" instinct oversimplifies the real optimization.

Timing the election

You can elect S-corp status on a new LLC within 75 days of formation to have it apply from day one, or you can elect during the tax year for it to apply the following year. There are late-election relief procedures, but it's easier to plan in advance. Revoking the election later is possible but has its own rules and can have tax consequences.

Retirement contributions

Salary-based retirement contributions (401k, SEP-IRA linked to W-2 wages) can look different under an S-corp structure than under a sole proprietorship, and in some cases allow larger contributions. This is another area where the interplay with your overall tax picture is worth modeling before committing.

Figro's guides are educational and do not constitute tax or legal advice. Every business situation is different — consult a licensed CPA or tax attorney before making any election. Some pages include affiliate links; if you purchase through them we may earn a commission at no extra cost to you.