S Corp vs LLC Calculator
Compare tax implications of S-Corp vs LLC structures based on your income and expenses. See self-employment tax savings, effective rates, and take-home
S Corp vs LLC Calculator
Calculator
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Formula: Tax Savings = LLC Self-Employment Tax - S-Corp Payroll Tax - S-Corp Compliance Costs
Worked example — S-Corp saves approximately $4,246 per year in this scenario
Formula
Tax Savings = LLC Self-Employment Tax - S-Corp Payroll Tax - S-Corp Compliance Costs
The S-Corp advantage comes from paying payroll taxes only on the owner's reasonable salary rather than all net business income. LLC SE tax applies to all net income at 15.3% (up to the Social Security wage base). S-Corp payroll tax applies only to the salary portion. The difference minus additional S-Corp compliance costs equals the net tax savings.
Worked Examples
Example 1: Solo Consultant Comparison
Problem:A solo consultant earns $150,000 in revenue with $30,000 in expenses (net $120,000). Compare taxes as an LLC vs S-Corp with a $70,000 salary. Single filer, 5% state tax.
Solution:LLC: SE Tax on $120,000 = ~$16,956 | Federal tax on ~$85,400 taxable = ~$14,260 | State = $5,190 LLC Total Tax: ~$36,406 S-Corp: Payroll tax on $70,000 = ~$10,710 | Federal tax on ~$85,400 = ~$14,260 | State = $5,190 | Compliance = $2,000 S-Corp Total Tax: ~$32,160
Result:S-Corp saves approximately $4,246 per year in this scenario
Example 2: Lower Income Freelancer
Problem:A freelancer earns $60,000 net income. Compare LLC vs S-Corp with a $40,000 salary. Single filer, 5% state tax.
Solution:LLC: SE Tax on $60,000 = ~$8,478 | Federal tax = ~$3,420 | State = $2,530 LLC Total Tax: ~$14,428 S-Corp: Payroll tax on $40,000 = ~$6,120 | Federal tax = ~$3,420 | State = $2,530 | Compliance = $2,000 S-Corp Total Tax: ~$14,070
Result:S-Corp saves only ~$358 — not worth the compliance burden at this income level
Frequently Asked Questions
What is the main tax difference between an S-Corp and an LLC?
The primary tax difference lies in how self-employment taxes are applied. In a single-member LLC (taxed as a sole proprietorship), all net business income is subject to self-employment tax at 15.3 percent (12.4% Social Security plus 2.9% Medicare) on the first $168,600 of earnings, with the 2.9% Medicare tax continuing beyond that threshold. In an S-Corp, only the reasonable salary paid to the owner-employee is subject to payroll taxes. Profits distributed beyond that salary are not subject to self-employment or payroll taxes. This means if your business earns $150,000 and you pay yourself a reasonable salary of $70,000, you save self-employment taxes on the remaining $80,000 distribution. This savings can amount to thousands of dollars annually, though it must be weighed against additional compliance costs.
What is a reasonable salary for an S-Corp owner?
The IRS requires S-Corp owner-employees to receive a reasonable salary before taking distributions. A reasonable salary must reflect what you would pay someone with similar experience and qualifications to perform the same work in your industry and geographic area. Setting your salary too low to avoid payroll taxes is a red flag that can trigger IRS audits and penalties including reclassification of distributions as wages with back taxes and penalties. Factors the IRS considers include training and experience, duties and responsibilities, comparable wages in similar businesses, dividend history, compensation agreements, and the use of a formula to determine compensation. A common guideline is that salary should represent 40 to 60 percent of net business income, though this varies significantly by industry and circumstances. Consulting a tax professional is strongly recommended.
When does it make financial sense to elect S-Corp status?
S-Corp election generally becomes financially advantageous when your net business income consistently exceeds $50,000 to $60,000 per year, though the exact threshold depends on your specific situation. Below this level, the self-employment tax savings may not offset the additional costs of S-Corp compliance, which typically include payroll processing fees of $500 to $2,000 annually, additional tax preparation costs of $1,000 to $3,000, state-level S-Corp taxes or franchise fees in some states, and the administrative burden of running payroll. The sweet spot is typically when net income is between $80,000 and $250,000 where the payroll tax savings significantly outweigh compliance costs. Above certain income levels, the Qualified Business Income deduction and other factors may also influence the decision.
What is the Qualified Business Income (QBI) deduction and how does it apply?
The Qualified Business Income deduction, established by the 2017 Tax Cuts and Jobs Act under Section 199A, allows eligible business owners to deduct up to 20 percent of their qualified business income from their taxable income. For LLC owners, QBI generally includes all net business income. For S-Corp owners, QBI includes only the distribution portion, not the salary component. This creates an interesting dynamic where the QBI deduction may partially offset the LLC self-employment tax disadvantage. The deduction begins to phase out for taxable incomes above $191,950 for single filers and $383,900 for married filing jointly. Above these thresholds, the deduction depends on W-2 wages paid and the unadjusted basis of qualified property. Specified service businesses face additional limitations at higher income levels.
What are the formation and ongoing compliance requirements for each structure?
An LLC is formed by filing Articles of Organization with your state, typically costing $50 to $500 depending on the state. Ongoing requirements include annual reports and fees, maintaining a registered agent, and keeping an operating agreement. Tax filing for a single-member LLC uses Schedule C attached to your personal Form 1040. An S-Corp requires first forming an LLC or corporation, then filing IRS Form 2553 to elect S-Corp tax status within 75 days of the desired effective date. Ongoing requirements include running formal payroll with W-2 reporting, filing quarterly payroll tax returns using Forms 941 and paying FUTA taxes, filing an S-Corp tax return on Form 1120-S annually, issuing K-1 forms to shareholders, maintaining corporate minutes, holding annual meetings, and potentially filing state-level S-Corp returns. The administrative burden and cost of S-Corp compliance are meaningfully higher than for an LLC.
Is an S-Corp a type of entity or a tax election?
S-Corp status is a federal tax election, not a separate state entity type. An LLC or a corporation formed under state law elects to be taxed under Subchapter S by filing the election form with the IRS, generally within a set window near the start of the tax year it should apply to. An LLC can therefore keep its operating agreement, membership interests and limited liability protection while changing only how profits are taxed and how the owner must be paid.
What is the built-in gains tax and when does it affect a converted S-Corp?
When an existing C corporation elects Subchapter S treatment, assets that appreciated during the C years still carry that unrealised gain. If those assets are sold inside the statutory recognition period after conversion, the gain attributable to the pre-election appreciation is taxed at the corporate level first, and the shareholders are then taxed on the remaining pass-through amount. An LLC electing S status with no C-corporation history is not exposed to this. Valuing assets as of the election date fixes the baseline.
Why does shareholder basis limit the losses an S-Corp owner can deduct?
A shareholder may deduct pass-through losses only up to stock basis plus any loan the shareholder personally made to the corporation. Basis rises with allocated income and contributions and falls with losses and distributions. Losses beyond basis are suspended and carried forward until basis is restored. Distributions taken above basis are treated as capital gain. Unlike a partnership, entity debt that a shareholder merely guarantees does not create basis.
How can a state's treatment of the S election change the savings shown here?
Not every state follows the federal election. Some tax S corporations at the entity level, some charge a franchise tax or minimum fee measured by receipts or capital, and a few require a separate state-level election alongside Form 2553. Rules for non-resident shareholders and for composite or pass-through entity taxes vary too. This comparison applies one flat state rate to income, so confirm your state's treatment before relying on the difference.
What ownership restrictions apply to an S-Corp that do not apply to an LLC?
Subchapter S limits who may hold shares: generally individuals who are US citizens or residents plus certain estates and trusts, subject to a statutory cap on the number of shareholders, and there may be only one class of stock as to distribution and liquidation rights. An LLC faces no such limits and can allocate profits disproportionately to capital. If you plan on foreign investors, entity members or tiered economics, the S election may simply be unavailable.
References
Reviewed for accuracy by Daniel Agrici, Founder & Lead Developer · Editorial policy
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