LLC vs S-Corp Tax Savings Calculator

LLC vs S-Corp Tax Savings Calculator

Find out how much you could save in taxes by electing S-Corp status — and whether the savings justify the added administrative costs.

An S-Corp election can significantly reduce self-employment taxes by splitting income into salary and distributions. But the savings only make sense above a certain profit level. This calculator runs the full comparison — including payroll taxes, income tax brackets, QBI deduction, and S-Corp administrative costs — so you can see your real net savings before making the decision.

Business Details

Revenue minus business expenses, before owner salary or taxes.
Must be reasonable for your role. The IRS requires S-Corp owners to pay themselves a fair market salary. Payroll taxes apply to this amount only.
Solo 401k, SEP-IRA, or SIMPLE IRA contributions reduce taxable income on both sides.
Self-employed health insurance is deductible from income tax on both sides.
Includes payroll service, accountant premium for S-Corp return, and state fees. Default $2,000 — adjust for your situation.

Tax Settings

Include taxable income from a spouse or other household sources to improve the accuracy of your estimated income tax bracket. Does not affect SE tax, payroll taxes, or business profit calculations.

How to Use This Calculator

Step 1 — Enter your net business profit

This is your total revenue minus business expenses, before paying yourself or taxes. Do not subtract your salary yet — that is handled separately on the S-Corp side.

Step 2 — Set your S-Corp owner salary

The IRS requires S-Corp owners to pay themselves a reasonable salary for services rendered. This is the amount subject to payroll taxes. The remaining profit becomes a distribution not subject to self-employment or payroll taxes — that is where the savings come from.

Step 3 — Add deductions

Retirement contributions and self-employed health insurance premiums reduce taxable income on both sides of the comparison. Enter what you currently contribute or plan to contribute.

Step 4 — Set your administrative cost estimate

S-Corps require payroll processing, a more complex tax return, and state fees. The default of $2,000 per year is a reasonable estimate for most small businesses. Adjust up if you expect higher accounting or payroll costs.

Step 5 — Add household income if applicable

If you or your spouse have other taxable income, entering it here improves the accuracy of your income tax bracket calculation. It does not affect your SE tax, payroll taxes, or business profit figures.

How the Math Works

LLC / Sole Proprietor: All net profit is subject to self-employment tax (15.3% on 92.35% of profit). Half of SE tax is deductible. A simplified QBI deduction of 20% of qualified income is applied, capped at 20% of AGI. Federal income tax is calculated on AGI minus standard deduction minus QBI deduction using 2025 brackets.

S-Corporation: Only the owner salary is subject to payroll taxes — both the employee share (7.65%) and employer share (7.65%), totaling 15.3% on the salary only. The employer FICA is a business deduction. The remaining profit flows as a distribution not subject to payroll taxes. QBI is calculated on the net S-Corp income. Federal income tax applies to salary plus distribution minus deductions.

The Tax Savings: The difference comes entirely from payroll taxes. As an LLC, you pay 15.3% SE tax on all net profit. As an S-Corp, you pay 15.3% payroll taxes only on the salary portion. On a $60,000 distribution, that saves approximately $9,180 in payroll taxes — before accounting for the additional S-Corp costs.

Break-Even: Calculated dynamically using binary search. The calculator finds the profit level at which S-Corp net savings (tax savings minus admin costs) equals zero. Below this point the LLC is simpler and equally or more cost-effective.

Who This Is For

Freelancers and consultants earning $60,000 or more in net profit wondering if an S-Corp election makes sense

Single-member LLC owners who have been advised to consider S-Corp status but want to see the actual numbers first

Small business owners comparing entity structures before their next tax filing

Accountants and tax professionals who want a quick estimate tool to share with clients evaluating S-Corp elections

Key Considerations Before Electing S-Corp Status

The reasonable salary requirement is non-negotiable

The IRS actively scrutinizes S-Corp owner salaries. Paying yourself $1 to maximize distributions is a red flag that triggers audits and penalties. Your salary should reflect what you would pay someone else to do your job. Industry compensation surveys and Bureau of Labor Statistics wage data are your reference points.

California has an $800 minimum franchise tax

California charges S-Corps an $800 annual minimum franchise tax plus 1.5% of net income. This calculator does not include state-specific entity taxes — California residents should factor this into their analysis and may find the break-even point is higher than the calculator shows.

S-Corps require ongoing compliance

You must run payroll, file quarterly payroll tax returns, issue yourself a W2, file Form 1120-S annually, and maintain corporate formalities. This is real administrative overhead — not just a number in a calculator. Budget time as well as money.

The QBI deduction may change in 2026

The 20% qualified business income deduction is currently scheduled to expire after 2025 under current law. If it is not extended, the tax math shifts slightly in favor of the LLC structure for some taxpayers. Factor this uncertainty into multi-year planning.

S-Corps reduce future Social Security benefits

Social Security benefits are based on your earnings record. As an LLC owner paying SE tax on all profits, you are building a higher earnings record. As an S-Corp owner, only your salary counts toward Social Security. If you pay yourself a low salary to maximize distributions, you are trading future Social Security benefits for current tax savings.

Frequently Asked Questions

What is the main tax advantage of an S-Corp over an LLC?+
In an LLC taxed as a sole proprietorship, all net profit is subject to self-employment tax at 15.3% (on 92.35% of profit). In an S-Corp, only your owner salary is subject to payroll taxes. Profit above your salary flows as a distribution not subject to payroll taxes. On significant income, this can save thousands of dollars annually.
How do I know what a reasonable salary is for my S-Corp?+
The IRS requires S-Corp owner-employees to receive reasonable compensation for services rendered. Reasonable means what you would pay a third party to perform the same work. You can reference Bureau of Labor Statistics wage data, industry salary surveys, or comparable job postings. Document your reasoning in case of an audit.
At what income level does an S-Corp start making sense?+
This varies based on your salary, state, deductions, and administrative costs — which is why this calculator computes break-even dynamically for your specific situation. As a general reference, many CPAs begin recommending S-Corp evaluation between $40,000 and $60,000 of annual net profit, but your actual break-even may be higher or lower.
Can an existing LLC elect S-Corp status?+
Yes. An LLC can elect to be taxed as an S-Corp by filing IRS Form 2553. The LLC remains an LLC for legal purposes but is treated as an S-Corp for federal tax purposes. The election must generally be filed within 75 days of the start of the tax year you want it to take effect, or by March 15 of the following year for late elections.
What are the actual costs of running an S-Corp?+
Typical annual costs include: payroll service ($400-$1,200/yr), accountant premium for Form 1120-S vs Schedule C ($500-$1,500/yr), and state registration or franchise fees ($50-$800+ depending on state). California adds an $800 minimum franchise tax. Total costs commonly range from $1,500 to $3,000+ per year for a simple single-owner S-Corp.
Does an S-Corp affect my QBI deduction?+
Yes, and the interaction is complex. S-Corp income passed through to the owner is generally eligible for the QBI deduction. However, the W-2 wages paid by the S-Corp (your salary) can actually help maximize the QBI deduction for high-income taxpayers who hit the wage-based limitations. This calculator uses a simplified QBI estimate — high earners should consult a CPA.
What payroll taxes does an S-Corp owner pay?+
As an S-Corp owner-employee you pay the employee share of FICA (6.2% Social Security up to the wage base plus 1.45% Medicare) on your salary. The S-Corp also pays the employer share (same amounts) as a business deduction. Distributions above your salary are not subject to payroll taxes — that is the source of the tax savings.
Is the S-Corp election permanent?+
No. You can revoke an S-Corp election, but the process requires shareholder consent and IRS notification. After revocation, you generally cannot re-elect S-Corp status for five years without IRS permission. Make the decision carefully and with professional guidance.
Why doesn’t this calculator include California’s franchise tax?+
California charges S-Corps an $800 annual minimum franchise tax plus 1.5% of net income — on top of normal state income taxes. This makes the S-Corp break-even point significantly higher for California residents. This calculator uses average state effective rates for income tax only. California residents should factor in the additional $800+ franchise tax when evaluating their break-even.
Should I talk to a CPA before electing S-Corp status?+
Yes. This calculator gives you a solid estimate to enter that conversation informed, but an S-Corp election has legal, accounting, and long-term financial implications specific to your situation. A CPA who works with small businesses can review your full picture and confirm whether the election makes sense for your state, industry, and income trajectory.
Scroll to Top