S Corp vs. LLC Taxes Explained: Which Structure Actually Saves You More Money?

If you're self-employed, freelancing, or running a small business, you've probably encountered the S corp vs. LLC question. And you've probably found the explanations unsatisfying — full of caveats, vague about the actual numbers, or wrong about the underlying mechanics.

Here's the foundational point that almost every comparison article gets wrong or buries: an S corporation is not a business entity type the way an LLC is. An S corp is a tax classification that an LLC (or a C corp) can elect. You don't choose between an LLC and an S corp the way you choose between a Chevy and a Ford. You choose an LLC, then separately decide whether to have it taxed as a sole proprietorship, a partnership, or an S corporation.

That distinction matters because once you understand it, the decision becomes clearer: you're always forming an LLC, and the question is whether to make the additional S corp tax election — and if so, when.

How a Single-Member LLC Is Taxed by Default

When you form a single-member LLC, the IRS ignores it for tax purposes. The LLC is what's called a "disregarded entity." All of your business income flows directly onto your personal return as if you were a sole proprietor.

This has two consequences:

Pass-through taxation. Your business profit is taxed as your ordinary income. If your LLC nets $80,000, that $80,000 shows up on your Schedule C and flows into your Form 1040. You pay federal income tax at your marginal rate — the same rate you'd pay on wages.

Self-employment tax on all net profit. Here's where it hurts. In addition to income tax, you pay self-employment (SE) tax on all LLC net profit. SE tax is 15.3% on the first $176,100 of net earnings (2026), and 2.9% above that. This covers both the employee and employer portions of Social Security and Medicare.

For an LLC with $80,000 in net profit:

SE tax base: $80,000 × 92.35% = $73,880 (the 92.35% factor accounts for the deductible employer half)
SE tax: $73,880 × 15.3% = $11,303
Half of SE tax is deductible: $5,652 deduction reduces your income tax base

You'll also owe federal income tax on the remaining income after the SE deduction (and after the 20% qualified business income deduction under Section 199A, which applies to many self-employed people). But the SE tax hit is the one that surprises people most.

How S Corp Taxation Works

When your LLC elects S corp status, it becomes a separate tax entity in the eyes of the IRS (even though it's still an LLC legally at the state level). This changes the flow of money in a critical way.

Under S corp taxation, you are required to pay yourself a reasonable salary as an employee of your own business. You take that salary as W-2 wages. Any remaining profit above your salary can be taken as a distribution.

Here's why this matters for SE tax:

W-2 salary: Subject to payroll taxes (the equivalent of SE tax, split equally between "employer" and "employee" portions)
Distributions: Not subject to payroll taxes at all

This split is the mechanism behind the S corp tax savings. By converting some of your business income from salary (payroll-taxed) to distribution (not payroll-taxed), you reduce your total payroll tax burden.

The same $80,000 business, structured as an S corp with a $50,000 salary:

	LLC (Default)	S Corp
Total business profit	$80,000	$80,000
W-2 salary	—	$50,000
Distribution	—	$30,000
Payroll taxes (employer + employee)	$11,303	$7,650
Payroll tax savings	—	$3,653

The distribution amount ($30,000) avoids the 15.3% payroll tax entirely. That saves $3,653 annually on this example — before accounting for the administrative costs of running the S corp.

The Break-Even Point: What Running an S Corp Actually Costs

The S corp saves money on paper. But it creates real costs that don't exist with a default LLC.

Payroll setup and administration. You're now an employee of your own company. You need payroll software or a payroll service (Gusto, ADP, Paychex) to run payroll, withhold taxes, and file quarterly payroll tax returns. Cost: $500–$1,500/year for basic payroll services.

Additional tax filings. The S corp must file Form 1120-S (the S corp tax return) annually in addition to your personal return. If you use a CPA, expect to pay more. Cost: $500–$1,500/year additional accounting fees.

State filing fees and franchise taxes. Most states charge an annual LLC or S corp registration fee ($50–$800+ depending on state). Some states add franchise taxes or minimum taxes specifically for S corps.

Total annual S corp overhead: roughly $1,500–$3,000/year for a solo operator using standard payroll and accounting services.

The break-even calculation is straightforward:

Break-even net profit = Annual S corp costs ÷ SE tax rate

At $2,000/year in S corp costs: $2,000 ÷ 15.3% = $13,072 in distributions needed to cover the overhead

In practice, this means you need to be taking at least $13,000 in distributions (i.e., having $13,000+ in profit above your reasonable salary) just to break even. Most financial advisors set the practical break-even at $40,000–$60,000 in annual net profit, with the math becoming clearly favorable in the $70,000–$80,000+ range.

At $80,000 net profit (from the example above):

Gross S corp savings: $3,653
Annual overhead: −$2,000 (estimated)
Net annual benefit: ~$1,650

At $120,000 net profit with a $70,000 salary and $50,000 distribution:

Payroll tax savings: $50,000 × 15.3% = $7,650 gross
Annual overhead: −$2,000
Net annual benefit: ~$5,650

The savings scale with profit, which is why the S corp election becomes increasingly attractive as income grows.

The Reasonable Compensation Requirement

The IRS is aware of the salary/distribution strategy. They require S corp owner-employees to pay themselves a "reasonable salary" — meaning compensation comparable to what you'd pay an employee doing the same work.

Setting your salary unreasonably low (say, $15,000 salary on $200,000 of S corp profit) is an audit red flag. The IRS has won cases requiring owners to reclassify distributions as wages, resulting in back payroll taxes, penalties, and interest.

What is reasonable? Look at Bureau of Labor Statistics data for your occupation, comparable job postings, and what your services would cost on the open market. For many solo consultants, a salary in the range of 40–60% of net profit is defensible. For high earners, the Social Security tax cap ($176,100 in 2026) creates a natural upper bound on salary — once your salary hits the cap, additional Social Security tax doesn't apply, which changes the calculus.

Document your salary decision annually and have a rationale you can explain. Your CPA should help you set this number.

Administrative Burden Comparison

Task	Default LLC	S Corp LLC
Annual state filing	Simple report + fee	Report + fee
Federal tax return	Schedule C on 1040	Form 1120-S + K-1 + Schedule E
Payroll taxes	None	Quarterly Form 941, annual W-2
Payroll software	Not needed	Required
Separate business bank account	Recommended	Required
Bookkeeping complexity	Low	Moderate
Estimated time burden per year	~5–10 hours	~20–30 hours
Estimated annual cost (CPA + payroll)	$300–$800	$1,500–$3,000

The administrative lift is real. If you're running a seasonal business, have highly variable income, or are just starting out, the overhead of S corp administration may consume the tax savings.

State-Level Differences That Can Change the Math

Federal analysis is one thing. State taxes can significantly alter whether the S corp election makes sense.

California: California imposes an $800 annual minimum franchise tax on LLCs and S corps, plus an additional 1.5% gross income tax on S corp net income. For lower-income California S corp owners, the state-level costs can eliminate the federal savings entirely. California self-employed people generally need $80,000+ in net profit before the S corp election makes economic sense.

New York: New York has its own franchise tax on S corps and additional filing complexity. New York City additionally does not recognize the S corp election for city taxes — S corps are taxed as regular corporations for NYC purposes, which adds another cost layer.

Texas, Florida, Nevada: No state income tax significantly improves the S corp math since there's no state-level drag eating into savings.

Before making the S corp election, model it with your specific state's rules, not just the federal calculation.

When to Stay as a Default LLC

Keep the default LLC structure if:

Your net profit is consistently below $40,000. The overhead exceeds or matches the savings.
Your income is highly variable year to year. Payroll commitments create rigidity that's hard to unwind.
You're just starting the business. Spend the first year focused on revenue, not entity optimization. Revisit when income stabilizes.
You're in California or New York with moderate income. Run the state-specific math first.
You want maximum simplicity. The default LLC is genuinely low-maintenance. An S corp is not.

When to Elect S Corp Status

Make the S corp election when:

Your business generates consistent annual net profit of $60,000+
You have stable, predictable income that makes a reasonable salary straightforward to set
You can handle (or outsource) the payroll administration without it becoming a distraction
You've modeled the state-specific math and it works in your favor
You have a CPA or accountant familiar with S corp compliance (not optional — this is a meaningful step up in tax complexity)

How to Make the S Corp Election

The S corp election is made by filing IRS Form 2553 — Election by a Small Business Corporation. Key timing rules:

To be effective for the current tax year, Form 2553 must be filed by March 15 of that year (for calendar-year businesses)
For a newly formed LLC, you have 75 days from formation to file and have it apply to the current year
Late elections are possible with IRS relief provisions in some circumstances

Once elected, the S corp status continues indefinitely. You can revoke it (by filing a revocation with the IRS), but this is a formal process and should not be done casually.

Frequently Asked Questions

Can I switch from an LLC to an S corp later?

You don't change the LLC structure — you file Form 2553 to change how the IRS taxes the existing LLC. The LLC remains an LLC under state law. You're just adding a tax election on top of it.

Does the QBI deduction apply to S corp income?

Yes. The 20% qualified business income (QBI) deduction under Section 199A generally applies to S corp distributions (not the W-2 salary portion). This is an additional benefit of the S corp structure that further reduces your taxable income on the distribution side. High-income earners in specified service trades (doctors, lawyers, financial advisors) may face limitations on QBI.

What happens if I don't pay myself a reasonable salary?

The IRS can reclassify your distributions as wages during an audit, requiring you to pay back employment taxes plus penalties and interest. This is one of the more commonly triggered penalties for self-employed S corp owners. Document your salary rationale each year.

Can a multi-member LLC elect S corp status?

Yes. A multi-member LLC can also elect S corp status. The mechanics are more complex (each member must meet S corp eligibility requirements — U.S. citizens or resident aliens only, maximum 100 shareholders), and the reasonable compensation analysis becomes more involved. A CPA is essential for multi-member S corps.

Is an S corp worth it if I earn $50,000?

At $50,000 net profit, the savings are marginal at the federal level and may disappear entirely in high-tax states. Model your specific numbers using your state's rules. Many advisors recommend revisiting the election when net profit reliably clears $60,000–$70,000 annually.

For a comprehensive look at the full range of deductions available to both LLCs and S corps, see our guide on self-employment tax deductions. If you're deciding how to use the cash you save through the S corp structure, our Roth IRA guide covers how S corp owners can maximize retirement contributions using distributions — one of the most effective combined strategies for self-employed high earners.