For freelancers weighing 1099 vs S corp taxation, the switch generally starts saving money once your net business profit consistently clears about $40,000 to $50,000 a year. Below that, the payroll service, separate corporate return, and higher CPA fees usually eat whatever you’d save on self-employment tax. Above it, the savings grow quickly, and by the time you’re netting $80,000 or more, staying on a plain Schedule C almost always means overpaying the IRS.
Why the Two Structures Are Taxed Differently
When you take work on a 1099 without a formal entity, or through a single-member LLC that hasn’t elected otherwise, the IRS treats you as a sole proprietor. Every dollar of net profit on your Schedule C flows onto your 1040 and gets hit with self-employment tax on top of ordinary income tax.1Internal Revenue Service. Reporting Payments to Independent Contractors2Internal Revenue Service. Single Member Limited Liability Companies
Self-employment tax is where the whole conversation lives. The combined rate is 15.3%: 12.4% for Social Security up to the annual wage base ($184,500 for 2026) and 2.9% for Medicare with no cap.3Internal Revenue Service. Self-Employment Tax (Social Security and Medicare Taxes)4Social Security Administration. Contribution and Benefit Base The tax applies to 92.35% of your net profit, and you can deduct half of what you pay as an above-the-line adjustment, which brings the effective rate closer to 14.1%.5Internal Revenue Service. Topic No 554 Self-Employment Tax If your self-employment earnings clear $200,000 single or $250,000 married filing jointly, an extra 0.9% Medicare tax stacks on top, and those thresholds aren’t indexed.6Internal Revenue Service. Topic No 560 Additional Medicare Tax
An S corporation isn’t a different kind of business at the state level. It’s a federal tax election you make by filing Form 2553, telling the IRS to tax your existing corporation or LLC under Subchapter S.7Internal Revenue Service. S Corporations8Internal Revenue Service. Topic No 751 Social Security and Medicare Withholding Rates9Internal Revenue Service. S Corporation Employees, Shareholders and Corporate Officers
Every dollar you route into distributions instead of salary avoids the 15.3% payroll-tax hit. That’s the whole engine.
What the Savings Actually Look Like
Suppose your freelance business nets $120,000 after expenses. As a sole proprietor, self-employment tax applies to 92.35% of that (about $110,820) at 15.3%, so you owe roughly $16,955 in SE tax before income tax even enters the picture.
Now assume you elect S corp status and pay yourself a $70,000 W-2 salary. FICA on that salary runs about $10,710 across the employer and employee sides combined. The remaining $50,000 comes to you as a distribution with no FICA. Your total payroll tax burden drops to about $10,710, a savings of roughly $6,245. After payroll service fees and a bigger CPA bill, you’re realistically keeping $3,000 to $5,000 more per year.
Those numbers scale up with profit. At $200,000 in net profit, the annual difference typically runs well into five figures.
The Catch: Reasonable Compensation
You can’t pay yourself $10,000 and call the rest a distribution. The IRS requires your salary to reflect what someone with your skills, experience, and workload would earn doing the same job in your industry and market. The factors the IRS and courts weigh include your actual duties and hours, comparable pay data, dividend history, what you pay non-owner employees, and any written compensation agreement.10Internal Revenue Service. Wage Compensation for S Corporation Officers
If the IRS reclassifies distributions as wages during an audit, you owe back FICA, penalties, and interest on the reclassified amount. This is the biggest audit risk S corp owners face. Document your salary decision with real comparable data and refresh that documentation each year.
How the QBI Deduction Complicates the Salary Choice
The Section 199A qualified business income deduction, made permanent in 2025, lets pass-through owners deduct up to 20% of qualified business income. Both sole proprietors and S corp shareholders can claim it, but the S corp split changes the math. Your W-2 salary is not QBI. Only the profit passed through on your Schedule K-1 counts. Set the salary higher and your QBI shrinks, along with the 20% deduction.
At modest income levels, the SE tax savings on distributions still outrun the lost QBI deduction, so the trade-off is easy. Above roughly $200,000 single or $400,000 married filing jointly, the QBI deduction becomes limited by W-2 wages the business pays, and specified service businesses (consulting, law, accounting, health care, and others) phase out entirely. At those income levels, setting the salary too low can cost you QBI you would otherwise have claimed. A tax professional who models both the SE tax savings and the QBI limits at the same time is worth the fee.
What Switching Actually Costs
The 1099 setup is cheap and simple: one tax return, quarterly estimates, done. The S corp election trades that simplicity for tax savings, and the trade is real.
Payroll
You have to run formal payroll for your salary. That means registering with federal and state tax authorities, withholding income tax and FICA from each paycheck, depositing those taxes on time, filing Form 941 quarterly (or Form 944 annually if the IRS has notified you that your liability qualifies), filing Form 940 for federal unemployment tax, and issuing yourself a W-2 at year-end.11Internal Revenue Service. Topic No 758 Form 941 Employers Quarterly Federal Tax Return and Form 944 Employers Annual Federal Tax Return12Internal Revenue Service. Instructions for Form 940 A payroll service for a single-employee S corp typically costs $40 to $150 per month, or $500 to $1,800 a year. Skipping the service to save money is usually a mistake; the penalty structure for late payroll deposits punishes small errors hard.
A Separate Corporate Return
The S corporation files its own return, Form 1120-S, due March 15 for calendar-year entities.13Internal Revenue Service. Starting or Ending a Business FAQ It reports the company’s income, deductions, and distributions and produces a Schedule K-1 that flows onto your personal 1040.14Internal Revenue Service. Instructions for Form 1120-S Professional preparation runs $700 to $3,500 depending on complexity and location. This is in addition to your personal return, not instead of it.
Clean Books and State Fees
Business and personal finances have to stay fully separate: dedicated business bank accounts, dedicated cards, no mixing. Commingling isn’t just a tax problem; it can undermine the liability shield your entity provides. Many states also charge annual filing fees or minimum franchise taxes on LLCs and corporations regardless of profit, ranging from nothing to several hundred dollars or more. Check your state before running the numbers.
What It Does to Your Retirement Contributions
Both structures let you open tax-advantaged retirement plans, but the S corp changes the compensation base your employer contributions are calculated from.
A sole proprietor can put up to 25% of net self-employment earnings (after the SE tax deduction) into a SEP-IRA, capped at $72,000 for 2026.15Internal Revenue Service. SEP Contribution Limits (Including Grandfathered SARSEPs) A solo 401(k) allows $24,500 in employee deferrals for 2026 plus employer contributions up to 25% of compensation.16Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
With an S corp, the employer contribution is based on your W-2 salary rather than total profit. Set your salary at $70,000 and the company can contribute up to 25% of that, or $17,500. You can still make the full $24,500 employee deferral into a solo 401(k), but the employer side rides on the salary you chose. A sole proprietor netting $120,000 has a larger contribution base. That doesn’t automatically make the sole proprietorship better overall (the SE tax savings often more than make up the difference), but it’s a variable worth modeling before you set the salary.
Deciding by Profit Level
The exact break-even depends on your state’s fees, your CPA rates, and how much of your income you can legitimately classify as distribution. As a rough framework:
- Net profit under $40,000: the compliance costs usually eat the savings. Stay on Schedule C and revisit each year.
- Net profit between $40,000 and $80,000: run real numbers with a tax professional. The savings are real but modest and depend heavily on your reasonable salary, your state’s costs, and how you handle QBI.
- Net profit above $80,000: the S corp election almost always comes out ahead, often by several thousand dollars a year after all costs.
Whatever level you’re at, the right salary isn’t a set-and-forget number. Revisit it every year as revenue changes and as industry benchmarks shift.
How to Make the Election if You’re Going Ahead
You need a formal legal entity first. A bare sole proprietorship can’t make the S election; you need an LLC or a corporation in place. A single-member LLC can file Form 2553 directly, and the IRS treats that filing as an automatic election to be taxed as a corporation combined with the S election, so a separate Form 8832 isn’t required.
To qualify, the business must be a domestic entity with no more than 100 shareholders, all U.S. citizens or residents, and a single class of stock. Partnerships and other corporations can’t be shareholders.17Office of the Law Revision Counsel. 26 US Code 1361 – S Corporation Defined For a one-person LLC, these are easy boxes to check.
File Form 2553, signed by all shareholders, no later than two months and 15 days into the tax year you want the election to take effect: March 15 for most calendar-year filers, and March 16 in 2026 because the 15th falls on a Sunday.7Internal Revenue Service. S Corporations A newly formed business gets the same 75-day window starting from formation, first asset acquisition, or the date it begins doing business, whichever comes first.
If you miss the deadline, the IRS offers late-election relief for businesses that meant to elect and have been operating as if they had. You generally need to file within three years and 75 days of the intended effective date, with reasonable cause for the delay. A CPA can file the late election with the explanatory statement.
One boundary worth naming: the S corp election is a tax choice, not a liability choice. Liability protection comes from the underlying LLC or corporation, not from Subchapter S. If you’re weighing entity choice for asset protection reasons, that’s a separate analysis from the tax question this article answers.