S-Corp vs LLC: Which Structure Saves You More on Taxes?

title: "S-Corp vs LLC: Which Structure Saves You More on Taxes?" description: "Compare S-Corp and LLC tax treatment side by side. Learn which business structure saves more on self-employment taxes and when to make the switch." date: "2026-03-03" author: "Vincent Boettcher" category: "S-Corp Tax"

Every business owner reaches the same fork in the road: "Should I be an LLC or an S-Corp?" It sounds like a legal question, but it's really a tax question. The answer depends on how much you earn — and how much of that you want to keep.

Here's what you need to know to make the right call for your business.

How LLCs Are Taxed

By default, a single-member LLC is treated as a sole proprietorship for tax purposes. A multi-member LLC is treated as a partnership. Neither is recognized as a separate tax entity by the IRS — your business income flows directly onto your personal return.

That simplicity has a cost. When you earn money through an LLC, 100% of your net profit is subject to self-employment (SE) tax — 15.3% on the first $176,100 (2025) and 2.9% on everything above that. You pay both the employer and employee share because you're both.

On $100,000 of net profit, that's roughly $14,130 in self-employment tax before you even think about federal or state income tax.

How S-Corps Are Taxed

An S-Corp doesn't change what you owe in income tax — the profit still passes through to your personal return. The difference is in how that income is classified.

As an S-Corp owner who works in the business, you're required to pay yourself a reasonable salary. That salary goes through payroll and is subject to FICA taxes (the same 15.3%/2.9% as SE tax). Any profit left over after your salary is distributed to you as a shareholder distribution — and distributions are not subject to FICA or SE tax.

That's the savings mechanism: you split your income into salary (taxed for FICA) and distributions (not taxed for FICA).

Side-by-Side: $100,000 Net Income

Let's put real numbers on this. Assume your business nets $100,000 and you work full-time in it.

LLC (default taxation):

Net income: $100,000
SE tax (92.35% × 15.3%): ~$14,130
SE tax deduction: ~$7,065
Taxable income: ~$92,935

S-Corp with $50,000 salary:

Salary: $50,000 → FICA: ~$7,650 (split between you and the "company," but both sides come from your business)
Distribution: $50,000 → no FICA
FICA tax total: ~$7,650
Tax savings vs. LLC: ~$6,480

Now add in the additional S-Corp costs — payroll service (~$500–$1,500/year), an extra tax return (Form 1120-S, typically $500–$1,000), and slightly higher accounting overhead — and your net savings on $100,000 in income might be $4,000–$5,500.

At $150,000 in net income with a $60,000 salary, that savings figure climbs to $8,000–$12,000 annually. The math gets better as income grows.

When an S-Corp Makes Sense

The S-Corp election pays off when your net profit consistently clears $40,000–$50,000 per year. Below that threshold, the administrative costs — payroll, extra tax return, bookkeeping — tend to eat up most or all of the SE tax savings.

The sweet spot is typically $75,000–$400,000 in net business income. Above the Social Security wage base ($176,100 in 2025), the marginal SE tax rate drops to 2.9%, which reduces the advantage of distributions somewhat, but it remains meaningful.

S-Corps work particularly well for:

Service businesses with high margins (consultants, coaches, freelancers, real estate agents)
Established businesses with predictable income
Owners who can justify a salary well below their total profit

When an LLC Is the Better Choice

An LLC without S-Corp election is often the right call when:

Your profit is under $40,000. The administrative overhead exceeds the tax savings.
You're in the startup phase. Losses and variable income make payroll complicated.
Your state has high S-Corp fees. Some states (California charges $800/year minimum franchise tax, for example) eat into S-Corp savings significantly.
You want maximum simplicity. One fewer return to file, no payroll obligations.

Colorado doesn't impose a separate franchise tax on S-Corps beyond the standard income tax, so Colorado-based businesses generally don't face that specific headwind. But state compliance still adds up.

What S-Corp Compliance Actually Involves

The S-Corp savings are real, but they come with administrative requirements that a plain LLC doesn't have. You need to understand these before electing.

Payroll. You must run actual payroll for yourself — withhold and remit federal and state payroll taxes, file quarterly 941s, issue a W-2 at year-end. A payroll service like Gusto or QuickBooks Payroll handles this for $500–$1,500/year, but it's a real obligation.

Separate business tax return. An S-Corp files Form 1120-S annually, due March 15. This is in addition to your personal 1040. Most tax professionals charge $500–$1,200 to prepare a 1120-S.

Corporate formality. S-Corps should maintain basic corporate records: meeting minutes (even as a solo owner), written compensation decisions, and a separate business bank account. This doesn't require an attorney on retainer, but it does require attention.

Reasonable compensation. The IRS requires you to pay yourself a market-rate salary — you can't set it artificially low to maximize distributions. This is enforced through audits and has resulted in significant penalties for owners who abused the structure. (More on this in our reasonable compensation guide.)

None of these requirements are unmanageable, but they aren't free either. Factor the total administrative cost — typically $1,500–$3,000/year for most small businesses — into your breakeven analysis.

The Conversion Process: Form 2553

If you're already an LLC and want S-Corp tax treatment, you don't need to dissolve and re-form. You file Form 2553 with the IRS to elect S-Corp status. Your LLC stays intact as an entity; you're just changing how it's taxed.

Timing matters. To elect S-Corp status for a given tax year, you generally need to file Form 2553 within 75 days of the start of that tax year (or within 75 days of formation for a new entity). Late elections are possible in some cases but require reasonable cause.

Once elected, the S-Corp status stays in effect until you revoke it. This isn't a decision to revisit every year — it's a structural choice with multi-year implications.

Frequently Asked Questions

Can my single-member LLC be taxed as an S-Corp? Yes. A single-member LLC can elect S-Corp status by filing Form 2553. You'll still have a one-owner business; you'll just run payroll for yourself and file Form 1120-S each year.

Does an S-Corp election affect my liability protection? No. The S-Corp election is a tax classification only. Your LLC's liability protection — the separation between your personal assets and business debts — remains intact.

What happens if my income drops after I elect S-Corp status? If your net income falls back below the threshold where S-Corp makes sense, you can revoke the election. Revocation requires filing a statement with the IRS. Once revoked, you generally can't re-elect for five years, so think carefully before switching back.

Ready to run the numbers for your specific situation? Read our complete S-Corp tax guide for a deeper look at how the election works — or schedule a consultation and we'll build the comparison around your actual income.