Forming an LLC does not, by itself, lower your federal taxes compared to working as an independent contractor. The real tax benefits of an LLC versus an independent contractor arrangement show up only when the LLC elects to be taxed as an S-Corporation, which lets you split business income into a salary and a distribution that escapes self-employment tax. That one election can save thousands of dollars a year once your profit is high enough to carry the extra compliance costs.
Why a Plain LLC Is Taxed Like a Sole Proprietor
An independent contractor with no formal entity is a sole proprietor by default. A single-member LLC that files no separate tax election is classified by the IRS as a “disregarded entity,” meaning it is treated the same way for federal tax purposes.1Internal Revenue Service. Limited Liability Company (LLC) In both cases you report income and expenses on Schedule C, attached to your personal Form 1040.2Internal Revenue Service. About Schedule C (Form 1040)
Your Schedule C net profit flows straight into the self-employment tax calculation. For 2026, the combined self-employment tax rate is 15.3% on the first $184,500 of net self-employment earnings, covering Social Security (12.4%) and Medicare (2.9%).3Social Security Administration. Contribution and Benefit Base Above that threshold the Social Security portion drops off, but the 2.9% Medicare tax continues on all remaining earnings.4Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes) You can deduct half of the self-employment tax as an above-the-line adjustment, which trims your taxable income slightly.
The LLC does give you personal liability protection, which is a genuine legal benefit. But until you make a tax election, every dollar of profit is hit with self-employment tax exactly as it would be for a sole proprietor. That is the baseline both structures share, and it is why most people asking whether an LLC saves them taxes are really asking about the S-Corp election.
The S-Corp Election: Where the Savings Begin
The meaningful tax divergence happens when your LLC elects S-Corporation status by filing IRS Form 2553.5Internal Revenue Service. Instructions for Form 2553 You become both an employee and a shareholder of your own company. Business income splits into two streams: a W-2 salary subject to payroll taxes, and shareholder distributions that are not.
The salary works like any other job. Your S-Corp withholds Social Security, Medicare, and income taxes from the paycheck and pays the employer half of FICA. The distribution passes through to your personal return on Schedule K-1 and is subject only to income tax. No Social Security tax. No Medicare tax.
Picture an LLC netting $200,000 in profit. As a sole proprietor, all of it carries self-employment tax. With an S-Corp election and a reasonable salary of $80,000, only the $80,000 carries payroll taxes. The remaining $120,000 paid as a distribution avoids the 15.3% self-employment tax entirely, saving roughly $18,000 in a single year. The math improves at higher profit levels.
Form 2553 must be filed no later than two months and 15 days after the beginning of the tax year you want it to cover. For a calendar-year business, that is March 15. You can also file at any point during the preceding year. Miss the window and the election will not apply until the following year unless you qualify for late-election relief under Revenue Procedure 2013-30.
Once elected, the S-Corp files its own return on Form 1120-S, and the income flows through to you on Schedule K-1.6Internal Revenue Service. About Form 1120-S, U.S. Income Tax Return for an S Corporation The corporation itself generally pays no federal income tax.
The Reasonable Compensation Rule
You cannot just set your salary at zero and take everything as a distribution. The IRS requires every S-Corp owner who performs services for the business to receive “reasonable compensation” before taking distributions.7Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers Paying yourself $20,000 for work that comparable employees in your industry get $85,000 for will get your distributions reclassified as wages, with back taxes, penalties, and interest attached.
Factors the IRS and courts weigh when testing a salary include:8Internal Revenue Service. Wage Compensation for S Corporation Officers
- What similar businesses pay employees performing the same work in your geographic area
- Your training, qualifications, and years in the field
- The hours you devote to the business versus passive oversight
- A pattern of large distributions with minimal salary draws scrutiny
- What the company pays other employees for comparable responsibilities
The goal is not the lowest possible salary. It is a defensible number that reflects market rates while leaving room for distributions. Salary surveys, industry job postings, and a conversation with a CPA who handles S-Corps are worth the time.
How the QBI Deduction Interacts With Your Salary
The Section 199A qualified business income deduction lets owners of pass-through businesses deduct up to 20% of their qualified business income from taxable income. The deduction had been scheduled to expire at the end of 2025 but was extended under the One, Big, Beautiful Bill Act signed into law on July 4, 2025. It applies to sole proprietors, LLCs, and S-Corps alike, but how you set your S-Corp salary directly affects the deduction size.
Your QBI from an S-Corp is the income on your Schedule K-1, not your W-2 salary. A higher salary shrinks the K-1 income and therefore the 20% deduction. At lower income levels, that pushes you toward the lower end of the reasonable compensation range to maximize QBI.
Above certain taxable income thresholds, a wage limitation phases in. Once fully phased in, your QBI deduction cannot exceed the greater of 50% of W-2 wages paid by the business, or the sum of 25% of W-2 wages plus 2.5% of the unadjusted basis of qualified business property.9GovInfo. 26 CFR 1.199A-1 – Operational Rules This flips the earlier logic: at higher incomes, too low a salary can shrink or eliminate your QBI deduction. The ratio works out to roughly $1 of W-2 wages for every $2.50 of QBI to capture the full deduction under the 50%-of-wages test.
One boundary worth knowing: if you work in health, law, accounting, consulting, financial services, athletics, or performing arts, your business is a specified service trade or business. Once taxable income exceeds the threshold, the QBI deduction phases out entirely for these fields. Below the threshold, you qualify for the full deduction regardless of profession.
The Additional Medicare Tax Angle
Self-employment income above $200,000 for single filers (or $250,000 for married filing jointly) triggers an extra 0.9% Medicare surtax on top of the standard 2.9%.10Internal Revenue Service. Questions and Answers for the Additional Medicare Tax For a sole proprietor, the whole net profit counts toward that threshold. For an S-Corp owner, only the W-2 salary does.
A sole proprietor earning $300,000 single pays the surtax on $100,000, which runs $900. An S-Corp owner with an $80,000 salary owes zero Additional Medicare Tax because the salary falls below the threshold, and the distribution carries no Medicare liability. At higher income levels this savings layer stacks on top of the base self-employment tax savings.
Retirement Contributions and Health Insurance
Retirement savings is one area where the S-Corp structure creates a real structural advantage. An S-Corp owner-employee can contribute to a Solo 401(k) in two capacities. As an employee, you can defer up to $24,500 for 2026 (or $32,500 if you are 50 or older, and up to $35,750 if you are between 60 and 63).11Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 On top of that, the corporation can make a profit-sharing contribution of up to 25% of your W-2 compensation. The combined total across both contribution types cannot exceed $72,000 for 2026 before catch-up contributions.12TIAA. IRS Announces 2026 Plan Contribution and Benefit Limits
A sole proprietor can open a Solo 401(k) too, but the employer piece is calculated on net self-employment income after the deduction for half of self-employment tax, which makes the math less generous. The common sole proprietor option is a SEP IRA at up to 25% of net self-employment earnings, capped at $72,000 for 2026. A SIMPLE IRA allows employee deferrals of up to $17,000 for 2026, with employer matching of up to 3% of compensation or a flat 2% nonelective contribution.13Internal Revenue Service. Retirement Topics – SIMPLE IRA Contribution Limits
Health insurance treatment is close to a wash. Both sole proprietors and S-Corp owner-employees can deduct health insurance premiums above the line on their personal returns. For a greater-than-2% S-Corp shareholder, the corporation pays the premiums and deducts them, reports them as wages on the W-2, and the shareholder then claims the self-employed health insurance deduction on the 1040.14Internal Revenue Service. S Corporation Compensation and Medical Insurance Issues Those premiums are exempt from Social Security and Medicare taxes, which is a modest payroll tax advantage. A sole proprietor takes the same above-the-line deduction directly on Form 1040.
One trap worth knowing: a 2% S-Corp shareholder is treated more like a partner than an employee for most fringe benefits.15Internal Revenue Service. Publication 15-B (2026), Employer’s Tax Guide to Fringe Benefits The $50,000 group-term life insurance exclusion does not apply. Pre-tax HSA salary reductions through the S-Corp are off the table. The $5,250 educational assistance exclusion is effectively unavailable to a single-owner S-Corp because of the 5% shareholder rule.16Office of the Law Revision Counsel. 26 U.S. Code 127 – Educational Assistance Programs
The Costs That Eat the Savings
S-Corp tax savings do not arrive free. An S-Corp requires running payroll for yourself: calculating withholdings, filing quarterly payroll tax returns, issuing W-2s, and paying both halves of FICA. Most owners hire a payroll service or accountant for this. The S-Corp also files its own annual return on Form 1120-S and issues you a K-1, so you have a second return to complete before your personal 1040.
Late filing penalties for Form 1120-S are steep: $255 per shareholder per month the return is late or incomplete, for up to 12 months.17Internal Revenue Service. Instructions for Form 1120-S (2025) A single-owner S-Corp filing two months late owes $510 before any other consequences. The minimum penalty for returns more than 60 days late is $525 or the tax due, whichever is less.
States add their own costs. Many impose annual fees, franchise taxes, or minimum taxes on LLCs and corporations that sole proprietors do not pay. These typically run from under $100 to $800 per year, and some states charge an additional fee based on gross receipts or net income. Initial LLC formation fees generally fall between $70 and $300. These expenses come straight out of your federal tax savings.
Estimated taxes apply either way. Both sole proprietors and S-Corp owners owe quarterly payments if they expect to owe more than $1,000 at filing. The 2026 due dates are April 15, June 15, and September 15 of 2026, plus January 15, 2027. The S-Corp adds a wrinkle because W-2 withholdings cover part of your obligation, but K-1 income still needs estimated payments unless withholding covers the balance.
When the S-Corp Election Is Worth It
The S-Corp election makes financial sense when your net profit consistently clears the cost of compliance by enough to generate meaningful self-employment tax savings. Most CPAs put the rough breakeven somewhere around $50,000 to $60,000 in annual net profit, though the exact figure depends on your state’s LLC fees, what you pay for payroll and a second tax return, and what counts as reasonable compensation in your field.
If your business nets $40,000 and a reasonable salary in your industry is $35,000, the distribution is only $5,000 and the self-employment tax savings on that will not cover payroll and Form 1120-S. At $150,000 of profit with a $70,000 reasonable salary, the savings on $80,000 of distributions become substantial and comfortably justify the overhead. The higher your profit relative to your reasonable salary, the more the S-Corp structure saves.
Sole proprietors just starting out, with inconsistent income, or in states with heavy LLC fees are usually better off staying on Schedule C until the numbers clearly justify the switch. You can make the election for any future tax year, so there is no reason to lock it in before the math works.