S-Corp vs LLC Tax Comparison 2026: What Actually Changes on Your Return

By Connor Davis, AE Tax Advisors · Billings, Montana · Updated 2026-08-15

An LLC is a state-law legal entity and an S-Corp is a federal tax election under IRC Subchapter S, so a single LLC can be taxed as a disregarded entity, a partnership, or an S-Corp. The practical comparison in 2026 is between default pass-through taxation, where all net profit is subject to self-employment tax, and S-Corp taxation, where the owner takes reasonable W-2 wages subject to payroll tax and the remaining profit is distributed free of self-employment tax. The election typically begins to pay for itself once net profit reaches roughly $60,000 to $80,000 per owner.

The Comparison Is Not LLC vs S-Corp

An LLC is formed under state law and governs liability, ownership, and governance. It has no default federal tax treatment of its own. A single-member LLC is disregarded and reported on Schedule C, a multi-member LLC defaults to partnership taxation on Form 1065, and either can elect S-Corp treatment on Form 2553.

So the real decision is whether to make the S election, and it can be made by an LLC or a corporation. Making the election does not change your liability protection, your operating agreement, or your state filing status. It changes how profit is characterized and taxed.

This matters because many owners form a corporation when they wanted an LLC, on the belief that S-Corp status required it. An LLC taxed as an S-Corp gives you the payroll tax result with the simpler state law entity.

Where the Savings Actually Come From

Under default treatment, all net earnings from self-employment are subject to SE tax at 15.3%, comprising 12.4% Social Security up to the annual wage base and 2.9% Medicare with no cap, plus the 0.9% additional Medicare tax above $200,000 single or $250,000 married filing jointly. Half of the SE tax is deductible above the line.

Under S-Corp treatment, only the owner's W-2 wages are subject to payroll tax. Distributions of remaining profit are not subject to SE tax or payroll tax.

The saving is therefore 15.3% of the amount characterized as distribution rather than wages, up to the wage base, and 2.9% to 3.8% above it. It is not a saving on income tax. The profit is taxed at ordinary rates either way.

That last point is worth emphasizing because it is widely misunderstood. An S election does not reduce income tax. It reduces employment tax only.

A Numerical Comparison at Several Income Levels

These are approximations using the 2026 Social Security wage base and standard rates, and they ignore state payroll taxes and unemployment insurance, which reduce the benefit somewhat. Confirm current-year figures before relying on them.

Two patterns are visible. Below roughly $60,000 of profit, the compliance cost exceeds the saving. And the saving does not scale linearly, because above the Social Security wage base only the Medicare portion is at stake, so the marginal benefit per dollar shifted drops from 15.3% to 2.9% or 3.8%.

The Costs You Are Trading Against

An S-Corp requires a separate return on Form 1120-S with K-1s to shareholders, actual payroll with quarterly Forms 941, annual Form 940, W-2 and W-3 filings, and state payroll registration and returns.

Realistic annual cost is $1,500 to $2,500 for the tax return and $600 to $1,500 for payroll processing, plus state unemployment insurance and any state-level entity or franchise taxes. Several states impose an S-Corp franchise tax or minimum fee that can materially change the math.

There are also structural costs. Reasonable compensation must be documented and defended. Basis must be tracked, and distributions in excess of basis are taxable gain. Health insurance for a more-than-2% shareholder must run through W-2 wages to be deductible. And the S-Corp cannot allocate income disproportionately to ownership, which a partnership can.

Ownership and Eligibility Restrictions

S-Corps have eligibility rules that partnerships do not. No more than 100 shareholders, only one class of stock, and shareholders limited to individuals, certain trusts and estates, and certain exempt organizations. Nonresident aliens cannot be shareholders, and corporations and partnerships cannot hold S-Corp stock.

The single class of stock requirement is the one that most often forces a different answer. If you need preferred returns, waterfall distributions, or special allocations, an S-Corp cannot do it and an LLC taxed as a partnership can. This is why real estate ventures with outside investors are almost never S-Corps.

Real estate is generally a poor fit for S-Corp treatment for a second reason: distributing appreciated property out of an S-Corp triggers gain recognition as though it were sold at fair market value, while a partnership can generally distribute property without gain. Locking appreciating real estate inside an S-Corp creates an exit problem that is difficult to undo.

Interaction With the Section 199A Deduction

The qualified business income deduction under Section 199A, made permanent by the OBBBA, allows up to a 20% deduction against qualified business income, and it interacts with the wage decision in a way that cuts against minimizing wages.

Below the taxable income thresholds, the deduction is simply 20% of QBI and W-2 wages are irrelevant. Above the thresholds, the deduction is limited to the greater of 50% of W-2 wages, or 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified property.

For a specified service trade or business, including health, law, accounting, consulting, athletics, financial services, and any business whose principal asset is the reputation or skill of its employees or owners, the deduction phases out entirely above the thresholds regardless of wages.

For non-service businesses above the thresholds, wages are the constraint on the deduction. Reducing your W-2 wage to save payroll tax can reduce the 199A deduction by more than the payroll tax saved. This is the single most common modeling error we correct on new engagements, and it flips the answer at higher income levels.

When to Elect, and When Not To

Elect when net profit reliably exceeds roughly $80,000 per owner, the business is not a real estate holding entity, ownership is simple and eligible, and you are prepared to run genuine payroll.

Do not elect when profit is volatile or below the breakeven, when you hold appreciating real estate, when you need special allocations or multiple equity classes, when you have ineligible owners, or when the QBI wage limitation would cost more than the payroll tax saved.

Timing matters. Form 2553 is generally due within two months and fifteen days after the beginning of the tax year the election is to take effect. Revenue Procedure 2013-30 provides relief for late elections within three years and seventy-five days where there was reasonable cause, which is granted routinely when the facts support it.

Key Takeaways

• An LLC can elect S-Corp taxation; the two are layers, not alternatives.
• The election saves employment tax only, never income tax.
• Breakeven is roughly $60,000 to $80,000 of net profit per owner after compliance costs.
• Above the Section 199A thresholds, a lower wage can cost more in lost QBI deduction than it saves in payroll tax.
• Appreciating real estate does not belong in an S-Corp because distributions trigger gain.

Frequently Asked Questions

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• Reasonable Compensation for S-Corp Owners
• C-Corp Income Shifting Strategy
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• Business Owner and Small Business Tax Services
• Advanced Tax Strategies for Business Owners