You are not paying 40% because the tax code is unfair. You are paying 40% because nobody has restructured your business to stop it. S corp tax savings are not a loophole. They are a straightforward application of IRC § 1362, and high earners who ignore them are simply donating money to the IRS that they are not legally required to give.
This is not a complicated concept. It is, however, one that requires you to do something specific, do it correctly, and maintain it over time. Most people do one of those three things. That is where the money gets lost.
The 40% Tax Bill Is Not Inevitable — It Is a Choice You Keep Making
If you are operating as a sole proprietor or a single-member LLC taxed as a disregarded entity, every dollar of net profit you earn is subject to self-employment tax. That rate is 15.3% on the first $176,100 of net earnings in 2025, and 2.9% on everything above that. Stack your federal income tax on top of that, add California's state income tax if you're here, and you are looking at an effective rate that lands somewhere between 38% and 43% depending on your income level. That is not a worst-case scenario. That is Tuesday for a freelancer billing $400,000 a year.
The frustrating part is that this is entirely legal and entirely avoidable. The self-employment tax exists because, as a sole proprietor, you are both the employer and the employee. You pay both sides of FICA. The IRS does not apologize for this. It is written directly into the structure of how unincorporated income is taxed, and if you have not changed your structure, you are accepting that arrangement by default.
The people who are not paying 40% did not find a secret. They elected S corporation status, set a defensible salary, and started taking the rest of their income as distributions. That is the entire strategy. What changes is not how hard you work or how much you earn. What changes is how your income is classified.
The window to make this election for a given tax year is not forgiving. Under IRC § 1362(a), you file IRS Form 2553, and for the election to be effective for the current tax year, it generally must be filed by March 15 of that year or within two months and fifteen days of forming your entity. If you miss that window, you are waiting another year. Every month you delay is a month you are paying the full self-employment tax rate on income that did not have to be taxed that way.
How S Corp Tax Savings Actually Work (And Why the Math Changes Everything)
The mechanism is simple enough to explain in two sentences, but most people do not actually run the numbers until they see what they have been leaving behind. Here is how it works: an S corporation passes its income through to shareholders, but that income is split into two categories, salary and distributions, and only the salary is subject to payroll taxes.
If you earn $300,000 in net profit and pay yourself a reasonable salary of $120,000, payroll taxes apply to the $120,000. The remaining $180,000 flows to you as a distribution, and under current law, distributions from an S corporation are not subject to self-employment tax. The payroll tax savings on that $180,000, at the 15.3% rate, is $27,540. That is not a rounding error. That is a material number that compounds every single year you are in business.
For those comparing s corp vs sole proprietorship tax savings, this is the core of the analysis. The sole proprietor pays self-employment tax on every dollar of profit. The S corp shareholder pays it only on their salary. The question is not whether the savings are real. They are, and they are documented in IRC § 1401 and § 1402, which govern self-employment tax liability. The question is whether you have set the structure up correctly, because the IRS knows this strategy exists and they are watching for the version of it that does not hold up.
The IRC § 199A deduction adds another layer. If your S corp income qualifies as qualified business income, you may be entitled to deduct up to 20% of that income from your federal taxable income. The One Big Beautiful Bill Act, if enacted as proposed, would make this 20% pass-through deduction permanent rather than allowing it to expire. That is a significant development for anyone building a business that generates consistent S corp distributions, because the deduction applies to the pass-through income, not the salary. The larger your defensible distribution, the more the deduction is worth.
Running an s corp tax savings calculator will give you a rough number, but calculators do not account for your specific salary determination, your state tax exposure, or whether your business type qualifies for the full IRC § 199A deduction. Specified service trades or businesses, which include fields like law, consulting, and financial services, face phase-out limitations on the § 199A deduction once income crosses certain thresholds. A calculator will not tell you that. An attorney who has read your financials will.
The S Corp Is Not Magic. The Salary Is the Strategy.
The single most audited element of an S corporation is the shareholder-employee salary. The IRS is not naive. They know that if you could pay yourself $1 in salary and take everything else as a distribution, every business owner in America would do exactly that. Which is why the law requires that you pay yourself a "reasonable compensation" for the services you actually perform for the corporation.
What is reasonable? The IRS has never given a precise definition, which is either a gift or a trap depending on how seriously you take the question. Courts and auditors look at what a comparable employee would earn for the same work in the same industry. If you are a consultant billing $500,000 a year in client revenue and you pay yourself a $40,000 salary, that is not going to survive scrutiny. The IRS will reclassify your distributions as wages, assess back payroll taxes, and add penalties and interest. The tax savings you thought you had will evaporate, and then some.
The right salary is not the lowest salary you can defend in a panic. It is the salary you can document, justify, and defend before the conversation becomes adversarial. That means looking at industry compensation data, your actual hours and responsibilities, and what your business can reasonably support. It also means running payroll correctly, filing Form 941 quarterly, and treating the salary like the real employment relationship it legally is.
There is also a five-year consideration that does not get enough attention. The question clients sometimes ask is what the five-year rule for S corps means. There is no single rule by that name, but the reference usually points to the built-in gains tax under IRC § 1374, which applies when a C corporation converts to S corporation status and then sells appreciated assets within five years of the election. If you are converting an existing C corp, this matters. If you are electing S corp status from the beginning on a new LLC, it generally does not. Knowing which situation you are in before you elect is not optional.
What California Does to Your S Corp Dream (And Why You Should Do It Anyway)
California is not a friendly state for S corporations, and anyone selling you the S corp strategy without mentioning this is giving you half a plan. The California Franchise Tax Board taxes S corporations at 1.5% of net income, with a minimum of $800 per year under Cal. Rev. & Tax. Code § 23153. That tax does not go away in a bad year. It does not care that your distributions were modest. It is assessed on the corporation's net income, and it is in addition to the personal income tax you pay on your share of that income as a California resident.
This does not make the S corp a bad idea in California. It makes it a more expensive idea that requires a more careful analysis. For many high earners, the federal payroll tax savings still dwarf the California franchise tax cost. But the break-even point is lower than people assume, and the s corp vs llc tax savings comparison looks different here than it does in a state without this additional layer.
California also has its own filing deadlines and its own penalties. The federal Form 1120-S is due March 16, 2026 for the 2025 tax year, with a $255 per shareholder per month late penalty under IRC § 6699. California's Form 100S carries its own penalty structure. A six-month federal extension via Form 7004 extends the federal filing deadline to September 15, 2026, but it does not extend your California deadline, and it does not extend the time to pay any tax owed. Filing late and paying late are two different problems, and California will bill you separately for each.
The two main disadvantages of an S corporation are the administrative burden and the compensation requirements. Payroll, quarterly filings, a separate bank account, corporate formalities, and a salary that can withstand IRS scrutiny. None of this is unmanageable. All of it requires attention. The businesses that get into trouble are the ones that elected S corp status because someone told them it would save money, and then ran it like a sole proprietorship with a different tax form.
Related reading
- How to Legally Reduce Your Income With an S Corporation
- What Is the 5-Year Rule for S Corp?
- How Do I Know If My LLC Is an S Corp or Sole Proprietorship?
- Is It Better to Be an S Corp or a Sole Proprietor?
- Work with an S-Corp attorney
S corp elections, reasonable salary determinations, and California franchise tax exposure are exactly where this firm works.
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