LLC vs. S Corp: Which Saves More Tax in 2026?

An S corporation election can reduce employment taxes for a profitable business owner—but the savings depend on a defensible salary, payroll costs, administrative expenses and the owner’s personal tax return. An LLC can elect S corporation taxation, so you do not necessarily need to replace your LLC to use this strategy.

For consultants and professional-service owners, the useful question is: How much would S corporation taxation save after paying a reasonable salary and covering the added costs? Below, we compare hypothetical businesses earning $150,000, $300,000 and $500,000 in annual profit.

LLC vs. S corp: understand the difference first

An LLC is a legal business structure formed under state law. An S corporation is a federal tax classification available to eligible businesses.

A single-owner LLC ordinarily reports its operating business income on the owner’s federal return, often using Schedule C. A domestic LLC with multiple owners generally defaults to partnership taxation. An eligible LLC can instead elect S corporation treatment while remaining an LLC under state law. In other words, “LLC vs. S corp” often describes a choice between default LLC taxation and LLC taxation as an S corporation.

Question	Single-owner LLC with default taxation	Eligible LLC taxed as an S corporation
Legal structure	LLC	LLC
Typical federal business filing	Schedule C with the owner’s Form 1040	Form 1120-S and Schedule K-1, plus owner’s Form 1040
Owner compensation	Owner draws; the owner generally is not their own employee	W-2 wages for services, with possible distributions
Employment-tax treatment	Active operating profit generally generates self-employment tax	Wages generate payroll taxes; qualifying non-wage distributions generally do not
Administration	Usually simpler for a solo business	Payroll, corporate tax filing and more detailed records

Sources: IRS guidance on limited liability companies and the Instructions for Form 2553.

How S corp tax benefits work

A sole proprietor generally pays self-employment tax on net earnings from an active business. An S corporation pays its working owner wages, and the owner may also receive distributions from remaining earnings.

The potential benefit comes from the different employment-tax treatment. It does not make business earnings disappear from the owner’s income-tax return. S corporation profit generally passes through to shareholders and can be taxable even when the cash stays in the business. A distribution’s separate income-tax treatment depends on basis and other rules.

For 2026, Social Security tax applies up to $184,500 of covered earnings. The combined employer and employee Social Security rate is 12.4%; regular Medicare tax is 2.9% combined, without an earnings cap. Self-employment tax generally starts with 92.35% of Schedule C net profit. Additional Medicare Tax can apply at higher income levels.

An S corporation does not avoid payroll tax on the owner’s salary. Both the employee and employer portions matter when comparing the total cost to an owner who controls the business. These rates and the 2026 wage base are confirmed in IRS Publication 15; the IRS also explains the filing-status thresholds for the 0.9% Additional Medicare Tax.

S corp vs. LLC taxes at $150,000, $300,000 and $500,000

These examples use annual business profit after ordinary operating expenses, but before owner wages, employer payroll taxes and added S corporation costs. Profit is not revenue: a company with $500,000 in sales and $350,000 in expenses belongs in the $150,000 comparison.

Each example assumes one active owner, single filing status, no other wages or self-employment income, and a full year under the chosen tax treatment. The salaries are hypothetical modeling inputs—not findings that those amounts are reasonable for any particular occupation.

The added annual costs are illustrative budgets for payroll administration, additional accounting and tax preparation, unemployment taxes and other incremental compliance expenses. They are not MFS quotes or measured market averages. Existing costs common to both structures are excluded.

Annual comparison	$150,000 profit	$300,000 profit	$500,000 profit
Hypothetical owner W-2 salary	$90,000	$150,000	$200,000
Default LLC self-employment taxes, including Additional Medicare Tax where applicable	$21,194	$31,606	$38,625
S corp owner payroll taxes, employer and employee combined, including Additional Medicare Tax where applicable	$13,770	$22,950	$28,678
Employment-tax reduction before added costs	$7,424	$8,656	$9,947
Assumed added annual S corp costs	$3,000	$4,500	$6,000
Employment-tax reduction less added costs, before income-tax effects	$4,424	$4,156	$3,947
Remaining S corp business profit after salary, employer FICA and added costs	$50,115	$134,025	$279,661

Figures are rounded from unrounded calculations. Remaining business profit is not a promise of distributable cash; reserves, liabilities and shareholder basis also matter. The table excludes federal and state income-tax effects, QBI deductions, retirement contributions, health-insurance adjustments and one-time conversion costs. It therefore does not show total tax savings.

At $150,000: salary can make or break the benefit

Consider a consultant whose business earns $150,000 before owner compensation. Using a $90,000 salary, combined owner payroll taxes are $13,770. Default LLC self-employment tax is approximately $21,194.

The difference is about $7,424. After $3,000 in added annual costs, approximately $4,424 remains before income-tax effects.

Now suppose the consultant’s responsibilities and comparable compensation support a $120,000 salary instead. Combined payroll taxes rise to $18,360. The employment-tax reduction falls to about $2,834, which is less than the assumed $3,000 in added costs. The modeled result becomes approximately $166 worse before income-tax effects.

The business earns the same profit in both versions. The salary assumption changes the decision.

At $300,000: more profit does not mean proportionately more savings

Consider an agency owner whose business earns $300,000 after paying staff and ordinary expenses. With a hypothetical $150,000 owner salary, combined payroll taxes are $22,950.

Default LLC employment taxes total approximately $31,606, including Additional Medicare Tax under the single-owner assumptions. After $4,500 in added annual costs, approximately $4,156 remains before income-tax effects.

Why does the benefit not double when profit doubles? The default LLC has already reached the Social Security earnings cap. Profit above that cap does not continue generating the full combined Social Security and Medicare rate. Applying 15.3% to every dollar of proposed distributions overstates the savings in this example.

At $500,000: the wider tax plan becomes especially important

Consider a professional-service firm earning $500,000 after staff and operating expenses. A hypothetical $200,000 owner salary produces $28,678 in combined regular Social Security and Medicare taxes.

Default LLC employment taxes total approximately $38,625 under the stated assumptions. After $6,000 in added annual costs, approximately $3,947 remains before income-tax effects.

Both structures have reached the Social Security cap. Salary, compliance costs and Medicare treatment drive much of the remaining difference. At this profit level, QBI eligibility, retirement contributions and the owner’s other income can materially affect the final answer. The smaller modeled benefit here reflects the chosen salaries and costs; it does not establish that every $500,000 business saves less than every $150,000 business.

What is a reasonable S corporation salary?

Reasonable compensation reflects the work the owner performs. The IRS considers duties, experience, hours, comparable compensation and the source of business receipts.

A solo consultant who personally delivers nearly every engagement may have different compensation requirements from an agency owner whose employees generate much of the revenue. Management and administrative work also count.

There is no universal IRS-approved “60% salary, 40% distributions” rule. Document the owner’s roles, time commitment, compensation research and the reasons for the selected wage. Revisit that analysis when responsibilities change.

If an owner receives distributions instead of appropriate wages, the IRS can reclassify payments as wages, creating employment-tax exposure and potentially penalties and interest. The IRS states that S corporations must pay shareholder-employees reasonable compensation before making non-wage distributions.

The QBI deduction can change the answer

The qualified business income deduction can provide an eligible owner a deduction of up to 20% of QBI, subject to limitations. Both default LLC taxation and S corporation taxation can qualify. Owner W-2 wages from an S corporation are excluded from QBI.

For illustration, the $150,000 default LLC example has roughly $139,403 of potential QBI after deducting half of regular self-employment tax, before other adjustments. The S corporation example has $50,115 of remaining business profit. At 20%, those amounts suggest deductions of approximately $27,881 and $10,023 before other limits—a difference of about $17,858 in deductions, not tax dollars.

That difference can offset employment-tax savings. A complete projection must also account for employer payroll deductions, deductible compliance costs and other income-tax effects.

For 2026, QBI limitations begin above taxable income of $201,750 for single filers or $403,500 for married couples filing jointly, calculated before the QBI deduction. Specified service businesses face phaseouts ending at $276,750 and $553,500, respectively. Many consulting, accounting, legal and healthcare businesses fall within these rules; classification matters. See the IRS overview of the qualified business income deduction and Revenue Procedure 2025-32, section 4.26.

Which costs should you include before electing S corp taxation?

Use the costs your business will actually incur:

1. Payroll administration. Include payroll processing, payroll tax deposits and wage reporting.
2. Additional tax preparation. Budget for Form 1120-S, Schedule K-1 and related owner-return work.
3. More detailed bookkeeping. Track wages, distributions, shareholder loans and basis records.
4. Federal and state charges. Include applicable unemployment taxes, state entity taxes and annual fees.
5. One-time implementation. Consider election assistance, payroll setup and any legal review.

Subtract only the added cost over the current structure. A business already using professional bookkeeping should not count its entire accounting budget as a new S corporation expense.

Also consider retirement contributions: S corporation employer retirement contributions generally depend on W-2 compensation rather than distributions. A lower salary can affect retirement funding capacity. Owners with another W-2 job need a separate analysis because Social Security wage coordination can change the comparison.

When default LLC taxation may be the better choice

Default taxation can remain attractive when profits fluctuate, reasonable wages would absorb most earnings, or the expected benefit is small after costs and income-tax effects.

Ownership plans matter too. S corporation eligibility restricts shareholders and generally requires one class of stock. Investors or arrangements requiring flexible economic allocations may make S corporation treatment unsuitable.

These examples address active service businesses. Rental-property income often has different self-employment-tax treatment, so a real estate investor should not apply the table to rental profits without a separate analysis.

How can an LLC elect S corporation taxation?

An eligible LLC generally uses Form 2553 to make the election. A qualifying timely election can also establish corporate classification without a separate Form 8832.

The usual deadline is no later than two months and 15 days after the beginning of the tax year the election is intended to cover, or during the preceding tax year. Weekend and holiday rules affect the exact date. Late-election relief may be available when its requirements are met.

Before filing, review eligibility, the intended effective date, shareholder consent, payroll readiness and any tax consequences of the conversion. As of October 2026, an existing calendar-year business seeking January 1, 2026 treatment would generally need to evaluate late-election relief; a 2027 election can be planned in advance. Review the current Instructions for Form 2553 before acting.

Plan the election around your business—not a generic profit threshold

For a consultant, agency owner or other professional-service business, a useful LLC vs. S corp analysis connects four things: reliable profit figures, documented owner compensation, actual compliance costs and a projection of the owner’s personal return.

McGregor Financial Services helps business owners bring tax planning, business accounting and payroll into the same conversation. Clean books establish the profit available. Tax planning evaluates the election. Payroll and ongoing accounting support the structure after implementation.

Want to know whether S corporation taxation would improve your position? Speak with McGregor Financial Services about your business profit, owner responsibilities and current tax structure.