LLC vs S-Corp Tax Savings 2026: When to Make the Switch

LLC vs S-Corp Tax Savings 2026: When to Make the Switch

If you're self-employed and earning more than $60,000–$80,000 in net income, you've probably heard that electing S-Corp status can cut your tax bill significantly. The strategy is real — but the math is more nuanced than many advisors suggest.

This guide explains exactly how the S-Corp SE tax saving works, what it costs to operate, how the QBI deduction interacts with the strategy, and what the actual net saving looks like at common income levels. We include a full worked example at $120,000 net income so you can see every number before talking to a CPA.

Use our USA Income Tax Calculator and Self-Employment Tax Calculator to model your specific numbers.

How the Default Single-Member LLC Is Taxed

By default, a single-member LLC is treated as a disregarded entity for federal income tax purposes. This means the IRS ignores the LLC and taxes the owner directly as a sole proprietor. The LLC provides liability protection at the state level, but offers no special federal tax treatment on its own.

The tax consequence: 100% of net LLC income is subject to self-employment (SE) tax. Under IRS Topic 554, SE tax is 15.3% (12.4% Social Security + 2.9% Medicare) applied to 92.35% of net earnings. The 92.35% factor exists because you can deduct the employer-equivalent portion of SE tax before calculating the base — mirroring how W-2 employees never pay SE tax on the employer's matching FICA contribution.

Example — $120,000 net LLC income: SE tax = $120,000 × 0.9235 × 15.3% = $16,956.

You also get two offsetting deductions: (1) you can deduct 50% of SE tax from AGI ($8,478 deduction), and (2) you can claim the 20% QBI deduction on qualified business income. On $120,000, the QBI deduction is $24,000 — at a 22% marginal rate, worth $5,280 in income tax savings.

But there is no way to split off any portion of your net income from SE tax. Every dollar of LLC profit faces the full 15.3% SE tax rate.

How the S-Corp Election Works

An S-Corporation is a pass-through entity that files its own federal return (Form 1120-S) but does not pay corporate income tax. The tax advantage comes from how S-Corp income is classified at the shareholder level.

By filing Form 2553 with the IRS, an LLC can elect to be treated as an S-Corp for tax purposes (while remaining an LLC at the state level — this is called a "QSST" or more commonly an LLC taxed as S-Corp). Alternatively, you can form a C-Corp and elect S-Corp treatment. The election must typically be filed by March 15 of the tax year for which it is to be effective, or within 75 days of entity formation.

Under S-Corp treatment (governed by IRC §1361–§1378), the owner who works in the business must receive a W-2 salary for services rendered. That salary is subject to standard FICA (7.65% employee + 7.65% employer = 15.3% combined). Profits remaining after the salary are paid as shareholder distributions — and critically, distributions are not subject to FICA or SE tax.

The FICA saving on the distribution portion is the entire basis of the S-Corp strategy.

Key mechanics:

• The S-Corp pays the owner a W-2 salary: both employer and employee FICA apply (15.3% combined)
• The employer's half of FICA (7.65%) is deductible as a business expense — reducing the owner's income tax
• Remaining profit flows through as distribution: zero FICA, zero SE tax
• The owner reports both salary and distribution on their personal return

The Reasonable Compensation Requirement

The S-Corp strategy only works if the IRS accepts the salary split. The IRS requires that S-Corp owner-employees receive "reasonable compensation" for services performed before any distributions are paid — per IRS Publication 15-A and longstanding IRS enforcement practice.

"Reasonable compensation" means what the business would pay an unrelated employee to perform the same services. The IRS considers factors including:

• Compensation paid to non-owner employees doing similar work
• What comparable businesses pay for equivalent roles
• The nature and volume of services provided by the owner
• The owner's qualifications, experience, and duties
• BLS Occupational Employment Statistics for the role

Why this matters: If you pay yourself a salary of $30,000 but the market rate for your work is $80,000, the IRS can recharacterise distributions as wages — assessing back FICA taxes plus penalties and interest. Underpaying the salary to maximise the distribution split is the single biggest audit risk of the S-Corp strategy.

Practical guidance: Many CPAs recommend paying 40–60% of net business income as salary when the owner performs all or most of the services, and ensuring the salary aligns with published Bureau of Labor Statistics wage data for the role. Document your rationale in writing. Courts have upheld IRS recharacterisations in numerous cases where the salary was clearly below market.

There is no fixed IRS rule on the exact salary percentage — only that it must be reasonable for the services rendered. A CPA who understands your industry and role is essential.

The Breakeven Calculation: When Does S-Corp Pay Off?

The S-Corp strategy generates savings by eliminating FICA on distributions. But those savings must exceed the fixed costs of operating an S-Corp. Here is the framework:

Annual S-Corp admin costs (typical range):

• Payroll service (e.g., Gusto, ADP): $500–$2,500/year
• Additional CPA work — Form 1120-S preparation: $500–$1,500/year
• State franchise fees / annual report fees: $0–$800+/year (varies widely by state)
• Total: typically $1,500–$3,500/year

FICA saving per dollar of distributions: When you take $1 as a distribution instead of salary, you avoid 15.3% FICA on that dollar (or more precisely, 15.3% of the first $184,500 SS wage base). However, you must compare this against what you would have paid in SE tax as an LLC: the LLC equivalent would be 15.3% × 0.9235 = 14.13% on each dollar of net income. So the gross saving per dollar shifted to distribution is approximately 14.13%.

Rough breakeven formula:

• SE tax saved on distributions: (Net Income − Reasonable Salary) × 14.13%
• Less: admin costs of S-Corp
• Less: QBI deduction lost (see next section)
• = Net annual saving

Working backwards: to generate $2,500 in savings to cover admin costs at a 14.13% effective SE rate: $2,500 ÷ 0.1413 = ~$17,700 in distributions above the salary needed. If your salary is $40,000 and distributions are $17,700+, total income is ~$57,700 before admin savings matter. Adding the QBI offset (see below), the real breakeven moves higher — typically $60,000–$80,000 in net SE income is the threshold where the strategy starts to make sense.

Below $60,000 in net SE income: the combination of admin costs, QBI deduction reduction, and limited FICA base means the S-Corp election will likely cost you money, not save it. Above $80,000: the savings generally accelerate meaningfully.

QBI Deduction Interaction: The Hidden Cost of S-Corp

One calculation that many introductory S-Corp guides omit is the Qualified Business Income (QBI) deduction interaction. This is material and must be modelled before deciding to elect.

The QBI deduction (20% of qualified business income, made permanent by the OBBBA) applies differently to LLC and S-Corp income:

• Default LLC: All net self-employment income is QBI. A $120,000 LLC earns a $24,000 QBI deduction.
• S-Corp: The W-2 salary paid to the owner is not QBI — only shareholder distributions qualify. An S-Corp with $60,000 salary and $60,000 distribution has QBI of only $60,000 → $12,000 QBI deduction.

The QBI reduction cost: Moving $60,000 of income from LLC profit to S-Corp salary eliminates $12,000 of QBI deduction. At a 22% marginal rate, that costs an additional $2,640 in federal income tax. At 24%, it costs $2,880.

This partially offsets the FICA saving from not paying SE tax on the distribution. You must net the FICA saving against the QBI loss to get the true net benefit. The higher your marginal income tax rate and the larger the salary-to-distribution ratio, the larger this QBI offset becomes.

There is one exception: for S-Corps with employees (not just the owner), the W-2 wages paid to those employees can increase the QBI deduction under the W-2 wage limitation — but this does not apply to the owner's own salary when calculating QBI.

Worked Example: $120,000 Net SE Income

Here is a full side-by-side comparison at $120,000 net self-employment income, 22% marginal federal income tax bracket, assuming single filing status and no other income adjustments.

Scenario A — Default Single-Member LLC:

• SE tax base: $120,000 × 0.9235 = $110,820
• SE tax: $110,820 × 15.3% = $16,956
• SE tax deduction (50%): −$8,478 from AGI
• QBI deduction: 20% × $120,000 = $24,000
• Admin costs: ~$0 (no payroll, no 1120-S)
• Total SE + extra income tax: ~$16,956 − (SE deduction income tax saving: $8,478 × 22% = $1,865) − (QBI income tax saving: $24,000 × 22% = $5,280) = net SE/FICA burden ~$9,811

Scenario B — S-Corp, $60,000 salary + $60,000 distribution:

• FICA on $60,000 salary: $60,000 × 15.3% = $9,180 (employer + employee combined)
• Employer FICA deductible: $60,000 × 7.65% = $4,590 deductible business expense
• SE tax on distribution: $0 (distributions are not subject to FICA/SE)
• FICA saving vs LLC equivalent on $60,000 distribution: $60,000 × 0.9235 × 15.3% = $8,478 in SE tax avoided
• But employer FICA still paid on salary: $4,590 (though deductible, it is still a cash cost)
• Gross FICA saving on distribution: ~$8,478 SE tax not paid on that $60k
• Less employer FICA on salary: −$4,590 (paid out, partially offset by deductibility)
• QBI deduction: 20% × $60,000 distribution = $12,000 (vs $24,000 LLC) — loss of $12,000 QBI
• QBI deduction income tax cost vs LLC: −$12,000 × 22% = −$2,640 more income tax
• Admin costs: −$2,000/year (midpoint estimate)
• Net annual saving (S-Corp vs LLC): ~$8,478 − $2,640 (QBI) − $2,000 (admin) = ~$3,838/year

Note: This is a simplified illustration. Actual savings depend on state taxes, exact reasonable salary, payroll costs, CPA fees, and marginal rate. Figures rounded for clarity. The employer FICA deductibility creates a secondary income tax saving not fully modelled here — a CPA can calculate the precise benefit for your situation.

At $80,000 net income with a $50,000 salary and $30,000 distribution, the saving narrows significantly and may not justify the complexity. At $60,000, the breakeven is marginal at best.

State Considerations

The federal FICA saving is consistent regardless of state, but state-level factors can significantly affect whether the S-Corp election is worth it:

State franchise / minimum taxes: Some states impose an annual franchise tax or minimum tax on S-Corps that does not apply to single-member LLCs. California imposes an $800 annual minimum franchise tax on all S-Corps plus a 1.5% S-Corp net income tax (minimum $800). New York imposes separate filing fees. These costs reduce or eliminate the S-Corp saving for lower-income owners in high-fee states.

State income tax on distributions: Most states tax S-Corp distributions as ordinary income at the same rate as LLC profits. A few states have special treatment. Verify with your state tax authority.

State payroll registration: Operating payroll requires registering as an employer with your state unemployment and withholding agencies. This adds administrative burden beyond federal payroll.

States with no income tax: In states with no individual income tax (Texas, Florida, Nevada, etc.), the federal QBI deduction interaction is the only income tax consideration — but state franchise fees still apply for entities operating in those states.

Always have a CPA calculate the all-in state + federal picture for your specific state before electing S-Corp treatment.

When NOT to Elect S-Corp Treatment

The S-Corp election is not right for every situation. Here are the circumstances where it typically does not make sense:

1. Net SE income below $60,000: At low income levels, the FICA saving on distributions is small. Admin costs ($1,500–$3,500) will likely exceed the saving. A default LLC is simpler and cheaper.

2. High reasonable salary relative to income: If your role commands a market salary close to your total net income (e.g., a software engineer earning $90k who would earn $85k on the open market), there is little room for distributions. The S-Corp saving depends on having meaningful distribution income after paying a defensible salary.

3. Business is in early growth phase: If you are reinvesting most profits and not taking large distributions, the strategy provides minimal benefit while adding cost and complexity.

4. Single-state S-Corp adverse tax treatment: In California, the 1.5% S-Corp franchise tax and $800 minimum tax often eliminate or reverse the federal FICA saving for owners earning under $100,000. Model your specific state.

5. You want maximum simplicity: S-Corp requires quarterly payroll deposits, annual W-2 filing, Form 1120-S (due March 15), potential state payroll registration, and ongoing reasonable salary documentation. This is meaningfully more complex than a single-member LLC filing Schedule C. If you value simplicity over tax optimization, the LLC remains the right choice.

6. Income above $184,500 (SS wage base): If your income significantly exceeds the Social Security wage base, the saving diminishes because the employer FICA on salary already covers most of the Social Security portion. At very high incomes, the calculus changes — consult a CPA.