LLC vs S Corp: Which Is Better for Your Business?

The phrase "LLC vs S corp" is one of the most common questions small-business owners ask, and it contains a hidden confusion that causes most of the trouble. The two are not the same kind of thing. An LLC is a legal business entity you form with your state. An S corp is a tax status you elect with the IRS. You are not choosing one instead of the other in the way the question implies, because an LLC can actually be an S corp for tax purposes. Once that clicks, the real decision becomes clear: it is about how your business is taxed, not which entity exists on paper.

This guide untangles the two, shows what the S corp election actually does, and helps you decide whether electing S corp status is worth it for your business.

What each one really is

An LLC, a limited liability company, is a legal entity formed by filing with your state. Its main job is liability protection, separating your personal assets from the business's debts and lawsuits. By default, the IRS taxes a single-member LLC like a sole proprietorship and a multi-member LLC like a partnership, with the profits flowing through to the owners' personal returns. The LLC is the container; it says nothing about how you are taxed beyond that default.

An S corp, or S corporation, is not an entity you form but a tax election you make with the IRS using Form 2553. Both an LLC and a traditional corporation can elect S corp status. What the election changes is how the business's profits are taxed, specifically how much of them are subject to self-employment tax. So the accurate framing is that you almost always form an LLC for the legal protection, and then separately decide whether to elect S corp taxation on top of it. The federal overview of these classifications is in the IRS guide to business structures.

The self-employment tax difference

Here is the mechanism that makes the S corp election matter. As a default LLC or sole proprietor, all of your business profit is subject to self-employment tax, which covers Social Security and Medicare at a combined 15.3 percent on net earnings. On a profitable business, that adds up quickly, because the full profit is exposed to it.

An S corp splits your income into two parts: a reasonable salary you pay yourself, which is subject to payroll taxes, and the remaining profit, which you take as a distribution that is not subject to self-employment tax. Only the salary portion gets hit with the 15.3 percent equivalent, so the distribution portion escapes it. For a business earning well beyond what a reasonable salary would be, that split can save thousands of dollars a year in self-employment tax. This single feature is the entire reason the S corp election exists in the small-business conversation, and it is why profitable owners gravitate toward it.

The catch: reasonable compensation and payroll

The savings are real, but the IRS built a guardrail. You cannot pay yourself a one-dollar salary and take everything as a distribution to dodge payroll tax. The law requires that your salary be "reasonable compensation" for the work you actually do, meaning what someone would be paid for that role in the market. Pay yourself an unreasonably low salary and you invite an IRS challenge that can reclassify your distributions as wages, with back taxes and penalties.

Running an S corp also means running payroll. You become an employee of your own company, which requires payroll processing, payroll tax filings, and usually an accountant, all of which cost money and time that a default LLC does not. This administrative overhead is the price of the tax savings, and it is why the election only makes sense above a certain profit level. Below that level, the self-employment tax saved is less than the cost and hassle of payroll and the extra tax preparation, so the election loses money rather than saving it.

When the S corp election is worth it

The math turns on profit. The S corp election generally starts to pay off once your business nets enough that the self-employment tax saved on distributions exceeds the added cost of payroll, accounting, and compliance. That breakeven varies, but many advisors point to net profits somewhere in the range of a reasonable salary plus a meaningful distribution on top, often cited in the vicinity of forty to eighty thousand dollars of profit and up, before the election clearly wins.

Below that, stay a default LLC and keep things simple. Above it, the election can save real money year after year, and the savings compound as profit grows. The honest answer to "should I elect S corp status" is almost always "not yet" for a new or small business, and "probably" once the business is consistently profitable. It is a decision to revisit annually as the numbers change, not a one-time choice locked in at formation.

What about the QBI deduction

A piece of recent tax news affects this comparison and is worth getting right, because outdated guides have it wrong. The Qualified Business Income deduction under Section 199A lets eligible pass-through owners deduct up to 20 percent of their qualified business income. This deduction was scheduled to expire at the end of 2025, but the One Big Beautiful Bill Act, signed in July 2025, made it permanent, so it remains available for the 2026 tax year and beyond.

Both default LLCs and LLCs taxed as S corps can qualify for the QBI deduction, since both are pass-through structures, with the full deduction available below income thresholds of roughly two hundred thousand dollars for single filers and four hundred thousand for joint filers, indexed each year. Because the deduction interacts with the salary-versus-distribution split in an S corp, the optimal salary for QBI purposes is not always the lowest reasonable one, which is exactly the kind of calculation worth running with an accountant. The takeaway is that the QBI deduction survives, it applies to both options, and it adds a wrinkle that rewards getting professional advice once your income approaches the thresholds.

How they compare on liability and formation

On liability protection, there is no difference between an LLC and an LLC that elected S corp status, because the S corp election changes only taxation, not the legal entity. The liability shield comes from the LLC itself, and it stays the same regardless of the tax election. If you are weighing the entity-level protection question more broadly, our LLC vs sole proprietorship guide covers why forming an LLC at all matters.

Formation is also largely the same, because you form the LLC the usual way and then file the separate S corp election with the IRS if you want it. The election adds the ongoing payroll and compliance obligations described above, but it does not change how you create or maintain the underlying entity. In practical terms, you are not formed as an S corp; you become one by election after the LLC exists, and you can make or revoke that election as your situation evolves. The Small Business Administration keeps a plain-language overview of the structures if you want a second federal source.

A worked example of the savings

Numbers make the tradeoff concrete. Picture a consultant whose LLC nets one hundred and twenty thousand dollars in profit, and assume a reasonable salary for that work is seventy thousand.

As a default LLC, all one hundred and twenty thousand is exposed to self-employment tax at the 15.3 percent combined rate, which is roughly eighteen thousand dollars before the deduction for half of it. As an S corp, the owner pays themselves the seventy-thousand salary, which carries the payroll tax equivalent, and takes the remaining fifty thousand as a distribution that escapes self-employment tax entirely. The tax saved on that fifty-thousand distribution is in the neighborhood of seven thousand dollars a year.

Against that saving, weigh the costs the election adds: payroll processing, payroll tax filings, a separate corporate tax return, and usually higher accounting fees, which might total a couple thousand dollars annually. Net it out and this owner comes out several thousand dollars ahead by electing S corp status, year after year. Now run the same exercise on a business netting thirty thousand. The salary would absorb most or all of the profit, leaving little distribution to shield, and the payroll and accounting costs would likely exceed any saving. That is the whole decision in two examples: the election wins when profit comfortably exceeds a reasonable salary, and loses when it does not. The breakeven is personal to your salary level and your state's costs, which is why the number is worth running for your own figures rather than borrowing a rule of thumb.

The mistakes owners make

A few errors recur. The first is electing S corp status too early, when the business is not profitable enough to outrun the payroll and accounting costs, so the election loses money. The second is the reverse, staying a default LLC long after the business became profitable enough that the election would have saved thousands, simply because no one ran the numbers. The third is paying an unreasonably low salary after electing, which invites an IRS reclassification with penalties. The fourth is treating this as a permanent decision rather than an annual one, when the right answer genuinely changes as profit rises or falls.

The clean way to think about it is sequential: form an LLC for the legal protection, operate as a default LLC while small, and elect S corp taxation once profit clears the threshold where the self-employment tax savings beat the added cost. Revisit the math each year, and bring in an accountant once it is close, because the payroll and QBI interactions are where a professional earns their fee.

Quick answers

Is an LLC or S corp better? They are not alternatives in the usual sense. You form an LLC for liability protection, then decide whether to elect S corp tax status on top of it. The election is better once the business is profitable enough to outweigh payroll and compliance costs.

How does an S corp save taxes? It splits income into a reasonable salary, subject to payroll tax, and distributions, which avoid self-employment tax. Only the salary is hit with the 15.3 percent equivalent, so profitable owners save on the distribution portion.

When should I elect S corp status? Generally once your net profit is high enough that the self-employment tax saved exceeds the added cost of payroll, accounting, and compliance. Many owners reach that point as profits climb into the tens of thousands and beyond.

Does an S corp change my liability protection? No. The election changes only taxation. The liability shield comes from the LLC and is unchanged.

This article is general information and not legal, tax, or financial advice. Business and tax decisions involve federal and state law and your specific circumstances, so consult a licensed attorney or accountant before electing a tax status. For related reading, see LLC vs sole proprietorship.