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

This is the question I get more than any other from business owners who've been operating for a year or two: "Should I switch to an S-Corp?"

The short answer: it depends on how much you're netting. The longer answer involves self-employment tax math, a concept called "reasonable salary," and a handful of trade-offs most people don't consider until they're already knee-deep in the paperwork.

Let me walk you through it with real numbers.

First, Clear Up the Confusion

An LLC is a legal structure. An S-Corp is a tax election. They're not the same category of thing, and comparing them directly is like comparing a pickup truck to a diesel engine. One is the vehicle, the other is what powers it.

Here's what that means in practice:

Single-member LLC (default): The IRS treats you as a sole proprietor. All your business profit flows to your personal return on Schedule C. You pay income tax and self-employment tax (15.3%) on all of it.

Multi-member LLC (default): The IRS treats you as a partnership. Profit flows through to each member's personal return based on their ownership share. Self-employment tax applies to each member's share of the profit.

LLC with S-Corp election: You file Form 2553 with the IRS, and your LLC is now taxed as an S-Corp. The legal structure stays the same. Your state still sees an LLC. But the IRS sees an S-Corp, and that changes how your income gets taxed.

Actual S-Corporation: A corporation formed under state law that files Form 2553. Functionally, for tax purposes, it works the same as an LLC with an S-Corp election.

The decision most people are actually facing: "Should I elect S-Corp taxation for my existing LLC?" That's what we're analyzing here. For more on the broader LLC vs S-Corp question, see our LLC vs S-Corp overview.

The Core Tax Advantage of an S-Corp

As a sole proprietor or standard LLC, you pay self-employment tax (Social Security + Medicare) on your entire net business income. That's 15.3% on the first $168,600 (2026 projected) and 2.9% on everything above.

As an S-Corp, you pay yourself a "reasonable salary" through W-2 payroll. You pay payroll taxes (same 15.3%) only on that salary. The remaining profit passes through to you as a distribution, which is not subject to self-employment tax.

That spread between your salary and your total profit is where the tax savings live.

Real Numbers: Side-by-Side Comparison

Let's say your business nets $120,000 in profit after all business expenses.

Scenario A: Standard LLC (Sole Proprietor)

Scenario B: LLC with S-Corp Election

You pay yourself a reasonable salary of $60,000 and take $60,000 as a distribution.

The Savings

$34,330 minus $27,080 = $7,250 in annual tax savings.

That's the self-employment tax you're no longer paying on the $60,000 distribution. It's real money. For a business netting $120,000, this is significant.

Plug your own numbers into the KnowYourNut Quarterly Tax Estimator to see what your specific savings would look like.

The Reasonable Salary Requirement

This is where people get into trouble. The IRS requires that S-Corp owner-employees pay themselves a "reasonable salary" before taking distributions. You can't pay yourself $15,000 and take $105,000 as a distribution. The IRS will reclassify those distributions as wages, charge you the payroll taxes you avoided, plus penalties and interest.

What counts as "reasonable"?

The IRS looks at:

• What would someone with your skills and experience earn doing similar work for another company?
• What do comparable businesses in your industry and region pay for similar roles?
• How much time do you spend working in the business?

There's no fixed formula, but a common benchmark is 40-60% of net business income for most small service businesses where the owner is the primary revenue generator. The more your business relies on your personal labor versus systems, employees, or equipment, the higher your salary needs to be relative to total profit.

Resources for setting salary: Bureau of Labor Statistics data, salary surveys from your industry, job postings for similar roles in your area. Document your reasoning. If the IRS questions it, you want a paper trail showing you didn't just pick the lowest number you could find.

For a deeper look at how to split your pay between salary and distributions, read our salary vs distribution guide.

When the S-Corp Makes Sense

The S-Corp election is not universally beneficial. Here's when it typically works in your favor:

Net profit above $60,000 to $80,000. Below this range, the tax savings are usually eaten up by the additional costs of running an S-Corp (more on those below). The break-even point varies based on your specific situation, but this is the range where the conversation starts to make sense.

Your business generates profit beyond your personal labor. If your business earns money because of systems, employees, intellectual property, or established client relationships, there's a stronger argument that not all profit is compensation for your work. If you're a solo consultant and every dollar of revenue requires your time, the "reasonable salary" floor will be higher, shrinking your savings.

You're disciplined about payroll. S-Corp means running real payroll: W-2s, payroll tax deposits, quarterly filings (Form 941), annual filings (Form 940, W-3). If you're not going to do this consistently, the penalties for payroll tax noncompliance are far worse than the self-employment tax you're saving.

When the S-Corp Doesn't Make Sense

Net profit below $50,000. The math doesn't work. Your reasonable salary eats up most of the profit, leaving minimal distributions. The added compliance costs may actually put you behind.

You plan to reinvest heavily. Sole proprietor income retains basis more flexibly. S-Corp distributions reduce your stock basis and can create tax issues if distributions exceed your basis. If you're plowing profits back into growth and taking minimal cash out, the S-Corp adds complexity without proportional benefit.

You have significant losses. S-Corp losses can only offset income up to your stock basis plus any loans you've personally made to the company. With a sole proprietorship, losses flow through more directly to offset other income.

You operate in multiple states. Some states don't recognize the S-Corp election. California charges a minimum $800 franchise tax plus a 1.5% tax on S-Corp net income. New York City taxes S-Corp income at the corporate level. Other states have their own wrinkles. Check your state's treatment before making the election.

You're in a community property state and unmarried business partners are involved. The ownership rules get complicated.

The Hidden Costs of an S-Corp

The tax savings look great in isolation. But running an S-Corp adds costs that eat into those savings.

Payroll service: $30 to $150 per month, depending on provider and complexity. Gusto, ADP, and similar services handle the filings, deposits, and W-2 generation. DIY payroll is possible but risky: late payroll tax deposits carry steep penalties.

Tax preparation: An S-Corp return (Form 1120-S) is more complex than a Schedule C. Expect your tax prep costs to increase by $500 to $2,000 per year.

Bookkeeping: You now need to track shareholder equity, distributions, and loan balances in addition to normal business income and expenses. If you're not already paying a bookkeeper, you may need one.

State filing fees: Many states charge annual S-Corp filing fees or franchise taxes.

Reasonable estimate of added annual costs: $2,000 to $5,000.

So that $7,250 in tax savings from our earlier example? After deducting $3,000 in added compliance costs, you're netting about $4,250. Still worthwhile at $120,000 in profit. Less clear at $70,000.

Use the KnowYourNut Profit Margin Calculator to see how these added costs affect your bottom line.

State-by-State Considerations

Your state's tax treatment of S-Corps can significantly affect the math. Here's a quick overview of states that create complications:

California: $800 minimum franchise tax for LLCs and S-Corps, plus a 1.5% income tax on S-Corp net income. This is on top of personal income tax on pass-through income. The 1.5% tax is unique to California and reduces S-Corp savings.

New York: S-Corps pay a fixed dollar minimum tax based on New York receipts, ranging from $25 to $4,500. New York City adds its own business tax. The combined burden can be substantial.

Texas: No personal income tax, but Texas has a franchise (margin) tax that applies to most business entities, including S-Corps. The tax is 0.375% for qualifying wholesalers/retailers and 0.75% for other businesses, on revenue above $2.47 million (2026 projected threshold).

New Hampshire: Taxes business profits at 7.5% for most entities, including S-Corps passing through income.

States that are S-Corp friendly: Florida, Wyoming, Nevada, South Dakota, and Washington have no personal income tax and minimal entity-level taxes, making the S-Corp savings nearly pure.

Bottom line: Run the state numbers before you file Form 2553. What saves you $5,000 in federal taxes might only save you $2,000 after state costs.

How to Make the Switch

If you've decided the S-Corp election makes sense, here's the process.

For an existing LLC:

1. File IRS Form 2553. To be effective for the current tax year, it must be filed by March 15 of that year. Late elections are possible with reasonable cause.
2. Set up payroll before you take any distributions. Your first paycheck should predate your first distribution.
3. Open a new business checking account if you don't already have one dedicated to the business.
4. Start tracking shareholder basis from day one.

For a new business:

You can form an LLC and file Form 2553 simultaneously. Some states let you form as a corporation directly and file the S election at the federal level.

The 2-month and 15-day rule: For an existing entity, Form 2553 must be filed within 2 months and 15 days of the start of the tax year for which the election is to take effect. For calendar-year businesses, that's March 15.

Missed the deadline? The IRS grants late election relief under certain conditions. You'll need to attach a statement explaining reasonable cause. Common reasons that the IRS accepts: your accountant advised you but failed to file on time, or you were unaware of the filing requirement for a newly formed entity.

When to Switch: The Decision Framework

Here's the framework I use when advising small business owners on this decision.

Stay as a sole proprietor/standard LLC if:

• Net profit is consistently below $60,000
• Your income fluctuates wildly year to year
• You're in the first year of business and still finding your footing
• You operate in California, New York, or another state with significant S-Corp costs
• You want maximum simplicity

Elect S-Corp status if:

• Net profit has been consistently above $80,000 for at least two years
• You can set a reasonable salary that still leaves meaningful distributions
• You're willing to run proper payroll and maintain clean books
• Your state's tax treatment doesn't erode the savings
• You've talked to a CPA who's run your specific numbers

The in-between zone ($60,000 to $80,000): Run the full calculation including compliance costs. If the net savings are less than $2,000, the hassle probably isn't worth it. Revisit the decision next year when your income may be higher.

Use the KnowYourNut Break-Even Calculator to understand your baseline profit picture before making structural tax decisions that add fixed costs to your business.

Common Mistakes to Avoid

Setting salary too low. The IRS has gotten more aggressive about this. A $30,000 salary on $200,000 in net income for a solo consultant won't hold up.

Forgetting to run payroll. Taking only distributions with no salary is treated as a violation. The IRS can reclassify all distributions as wages.

Mixing personal and business funds. This is risky for any business structure, but S-Corps have stricter rules about distributions and basis. Keep your accounts separate.

Not tracking basis. If your cumulative distributions exceed your stock basis (initial investment plus accumulated undistributed income minus losses), the excess is taxed as capital gains. Tracking basis isn't optional.

Ignoring the payroll tax calendar. Payroll tax deposits are due semi-weekly or monthly depending on your deposit schedule. Late deposits trigger penalties that start at 2% and climb to 15%. The IRS does not mess around with payroll taxes.

The Bottom Line

The S-Corp election is a powerful tax tool, but it's a tool with a cost. It works best for established businesses with consistent profits above $80,000, owners who are willing to run payroll properly, and situations where state taxes don't eat the savings.

Don't make this decision based on a friend's recommendation or a social media post promising massive tax savings. Run your specific numbers. Talk to a CPA who works with small businesses in your state. And remember that the cheapest structure is the one that matches your actual business, not the one that looks best on a napkin calculation.

If you're new to business taxes altogether, start with our guide to tax obligations for new businesses for the full picture.

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*This article is for educational purposes and does not constitute tax advice. Consult a qualified tax professional for guidance specific to your situation. Tax rates and thresholds referenced are based on projected 2026 figures and may be adjusted by the IRS.*