LLC vs S-Corp Tax Calculator 2026 — How Much Could You Actually Save?

If you're a freelancer or solopreneur earning $60,000 or more, you've probably heard that electing S-Corp status could save you thousands in taxes every year. But the math isn't always obvious — and getting it wrong in either direction costs real money. This calculator shows you the exact numbers at your income level, and explains when S-Corp makes sense and when it doesn't.

How the LLC vs S-Corp Tax Difference Actually Works

As a single-member LLC, all of your net business income flows through to your personal tax return as self-employment income. You pay self-employment (SE) tax at 15.3% on the first $184,500 of net earnings (2026 rate), plus 2.9% Medicare on everything above that. On $100,000 net income, that's roughly $14,130 in SE tax alone — before income tax.

When you elect S-Corp status for your LLC, the structure changes. You must pay yourself a "reasonable salary" as a W-2 employee. Only the salary portion is subject to payroll taxes (equivalent to SE tax). The remaining profit can be taken as an owner distribution — which is not subject to payroll tax. That's where the savings come from.

The Break-Even Point: When S-Corp Starts Making Sense

S-Corp status comes with real ongoing costs: payroll software, a separate business tax return (Form 1120-S), and typically a CPA who knows S-Corp compliance. These costs typically run $2,000–$4,500/year. Below certain income levels, these costs exceed the tax savings.

The Reasonable Salary Rule — And Why It Matters

The IRS requires S-Corp owners who work in the business to pay themselves a "reasonable salary" before taking distributions. This is the most important variable in the S-Corp calculation — and the most commonly misunderstood.

• Too low: IRS audit risk. The IRS looks for W-2 salaries that are artificially depressed to minimize payroll taxes. Getting caught means back taxes, interest, and penalties.
• Too high: You eliminate the benefit. If your salary equals your net income, there's nothing left for distributions — no savings.
• The general rule: Most CPAs recommend 40–60% of net profit as a starting point. The IRS benchmark is what you'd pay a market-rate employee doing the same work.

The Real Compliance Costs of S-Corp

Many guides only mention the tax savings. Here are the full annual costs to factor in:

• Payroll software (Gusto/Rippling): $480–$1,200/year
• S-Corp tax return (Form 1120-S): $800–$2,000/year via CPA
• State-level S-Corp fees: Varies — California charges $800 minimum; some states don't recognize S-Corp
• Additional bookkeeping: $0–$1,500/year depending on complexity
• Your time: Quarterly payroll deposits, record-keeping — estimated 3–5 hours/month

State-Level Considerations: The 4 State Tax Models

Federal SE tax savings are consistent across states, but your net benefit varies significantly depending on where you operate. Rather than evaluate all 50 states individually, we group states into four practical models that determine how state tax affects your S-Corp decision:

• Model A — No income tax states (TX, FL, NV, WA, WY, SD, AK, NH, TN): No state tax complexity at all — your S-Corp savings are purely a federal calculation.
• Model B — Flat/low tax states (AZ, IN, CO, UT, NC, PA, and similar): A consistent flat rate applies regardless of income level, making the math simple and predictable.
• Model C — Progressive tax states (NY, OR, NJ, MN, and similar): Tax rate increases with income. We use a weighted-average estimate (~5–6%) since exact brackets vary by year and filing status.
• Model D — California: The most distinct case. California imposes a 1.5% S-Corp franchise tax on net income, with an $800 minimum regardless of profit. At lower incomes, this minimum can erase your federal savings entirely — this is the one state where the math genuinely flips for some users.