At a glance
- An LLC and an S corporation are not alternatives. One is a state law entity, the other a federal tax election, and a single LLC can be both at the same time. The real question is whether to make the election.
- Electing does not mean filing two forms. An LLC that timely elects S corporation status is treated as having elected corporate classification as well, so Form 2553 is normally the only filing.
- The first breakeven is employment tax. On $120,000 of profit with a $70,000 salary, the election saves $6,245 a year before the cost of payroll and a second return.
- The second breakeven catches people by surprise. Above the section 199A threshold a sole proprietor with no employees and no equipment loses the deduction entirely, because the limit is measured against W-2 wages they do not have.
The question people search for is which is better, an LLC or an S corporation. The honest answer is that the comparison does not exist as posed. An LLC is created under state law and says nothing about how it is taxed. An S corporation is a federal tax classification that a qualifying entity elects. Most of the S corporations this firm files for are LLCs.
Once that is clear the real decision becomes visible, and it is a narrower one: your LLC is currently taxed as a sole proprietorship or a partnership, and the question is whether electing to have it taxed as an S corporation is worth what it costs to run. That has an arithmetic answer, and it has a second answer at higher income that most comparisons never reach.
What the default is, and what the election changes
Under the classification regulations an LLC is an eligible entity, which means it can elect how it is taxed. Absent an election, Reg. section 301.7701-3(b)(1) classifies a domestic LLC as a partnership if it has two or more members and disregards it as separate from its owner if it has one. Disregarded means the activity lands on the owner’s Schedule C, which is why a single-member LLC files no return of its own.
Electing S corporation status changes the tax classification — and, contrary to what the phrasing of the question implies, nothing about the entity. The LLC remains an LLC in its state, keeps its operating agreement and its liability shield, and keeps its name. What changes is that the owner who works in it becomes an employee of it, takes a salary through payroll, and receives the rest of the profit as a distribution that carries no employment tax.
One mechanic is worth knowing because it removes a step people expect. Paragraph (c)(1)(v)(C) of the same regulation provides that an eligible entity making a timely S election under section 1362(a)(1) “is treated as having made an election under this section to be classified as an association,” provided it meets the section 1361(b) requirements. In plain terms, Form 2553 does the whole job. Form 8832 is not also required.
What this looks like on an actual return
If you read nothing else, read this. Same business, same $120,000, one election apart.
A single-member LLC earns $120,000 of net profit. In the second column it has elected S corporation status and pays its owner a $70,000 salary, which is assumed to be reasonable for the work. All figures are below the $184,500 Social Security wage base for 2026.
| On $120,000 of profit | Taxed as a sole proprietorship | Taxed as an S corporation |
|---|---|---|
| Owner’s W-2 salary | — | $70,000 |
| Net earnings from self-employment, 92.35% of profit | $110,820 | — |
| Self-employment tax at 15.3% | $16,955 | — |
| Social Security and Medicare on the salary, both halves | — | $10,710 |
| K-1 ordinary income, no employment tax | — | $44,645 |
| Employment tax on the same profit | $16,955 | $10,710 |
The election saves $6,245 a year at this profit level. That is the gross figure — and it is not the answer on its own. Against it sit the real costs of being an S corporation: a payroll service running at least quarterly, a separate Form 1120-S, the state’s own corporate or franchise filing, and the bookkeeping to support a balance sheet the return now asks for. Get those quoted for your own situation and subtract them. The election pays when the saving clears them with enough left over to be worth the administration.
The one-line version. The election does not reduce your income tax. It reduces the part of your profit exposed to employment tax, and it charges you a payroll system for the privilege. Figures are illustrative and rounded.
The second breakeven, which arrives much later
The comparison above stops being the whole story once taxable income passes the section 199A threshold, which for 2026 is $201,750 on a single return and $403,500 on a joint one. Above the top of the phase-in range the qualified business income deduction cannot exceed the greater of half your W-2 wages, or a quarter of wages plus 2.5% of the basis in qualified property.
Read that against a sole proprietor with no employees and no equipment. There are no W-2 wages, because an owner’s draw is not a wage, and there is no qualified property. Half of nothing is nothing — and the deduction disappears. The same business as an S corporation, paying its owner a real salary, keeps a deduction worth up to half that salary. At that income level the election stops being a payroll tax question and becomes a much larger one.
This is also why the answer changes as a business grows rather than staying settled. An election that was not worth making at $70,000 of profit is usually worth making at $150,000, and is a different calculation again once taxable income clears the threshold. The arithmetic behind the salary itself is worked through in S corp salary versus distributions.
Whether you can elect at all
Not every LLC qualifies. Section 1361(b)(1) requires a domestic entity that does not have more than 100 shareholders, does not have a shareholder who is not an individual apart from certain estates and trusts, does not have a nonresident alien shareholder, and does not have more than one class of stock.
Three of those catch real businesses — and the third catches them quietly. A partner who is another LLC or a corporation is fatal. A non-resident foreign owner is fatal, which rules the election out for most of the foreign-owned entities this firm files for. And an operating agreement giving one member a preferred return is a second class of stock in substance, even though an LLC has members rather than stock, so an agreement drafted without the election in mind can quietly disqualify it.
The deadline, and what happens when it is missed
Section 1362(b)(1) gives two windows: at any time during the preceding taxable year, or during the taxable year on or before the fifteenth day of the third month. For a calendar-year business that means March 15 for an election effective the same year. An election filed after that is treated under section 1362(b)(3) as made for the following year.
Missing it is common — and usually fixable. Section 1362(b)(5) lets the Secretary treat a late election as timely where there was reasonable cause, and the administrative relief built on it is routine enough that a first-year election filed late is more often a paperwork exercise than a lost year. It is still a step that costs time and creates a return nobody planned for, which is the argument for deciding before the year starts rather than in April.
What to do about it
- Work out your actual profit, not your revenue. The comparison runs on net profit after every deduction. A business with $300,000 of revenue and $110,000 of profit is a $110,000 decision.
- Get the running cost quoted before you elect. Payroll, the 1120-S, the state filing and the bookkeeping to support a balance sheet. The election is worth making when the employment tax saving clears that number comfortably rather than marginally.
- Check eligibility against the operating agreement, not just the ownership. A preferred return or a second class of membership interest can disqualify the election even where every member is an eligible individual.
- Price the salary before you commit. The saving in the table depends on a salary that would survive examination. If the defensible figure is much higher than you assumed, the saving is smaller than you assumed.
- Diary March 15. Decide in the fourth quarter for the following year. Late relief exists, but a decision made on time is cheaper than relief.
Frequently asked questions
Can an LLC be taxed as an S corporation?
Yes, and it is the usual arrangement. An LLC is an eligible entity under the classification regulations, so it can elect how it is taxed. Filing a timely Form 2553 both makes the S election and is treated as an election to be classified as an association, so a separate Form 8832 is not normally needed. The LLC stays an LLC in its state throughout.
How do I know whether my LLC is already an S corporation?
Look at the return it files. An S corporation files Form 1120-S and issues you a K-1; a single-member LLC with no election files nothing of its own and lands on your Schedule C; a multi-member LLC with no election files Form 1065. If you have a copy of an accepted Form 2553 or a CP261 notice from the IRS, that is the confirmation. If you cannot find either and the returns are ambiguous, the entity’s transcript will settle it.
At what profit does the election start to pay?
There is no universal figure, because the answer is the employment tax saving minus what payroll and a second return cost you. At $120,000 of profit with a $70,000 salary the saving is $6,245 a year, which clears most running costs with room to spare. Well below $100,000 of profit the margin narrows quickly, and for a business whose owner needs most of the profit as salary anyway there may be no saving at all.
Does an S corporation pay less income tax than an LLC?
No. Both are pass-through arrangements and the profit is taxed to you at your own rates either way. The election changes what is exposed to Social Security and Medicare, not what is exposed to income tax. Anyone describing an S corporation as a lower tax rate is describing something else.
Can a multi-member LLC elect S corporation status?
Yes, if every member is an eligible shareholder and the agreement does not create a second class of interest. Both conditions fail more often than people expect. A member that is itself an LLC or a corporation disqualifies the election, a non-resident foreign member disqualifies it, and a preferred return to one member is a second class of stock in substance.
What happens if I miss the March 15 deadline?
A late election is treated as made for the following taxable year, so without relief you wait a year. Section 1362(b)(5) allows a late election to be treated as timely where there was reasonable cause, and the administrative relief built on that provision handles most first-year cases. It is a real remedy rather than a formality, but it is also avoidable by deciding before the year begins.
Does electing change my liability protection?
No. Liability protection comes from state law and from how you actually operate the business, not from a federal tax election. The LLC that protected you before the election protects you after it. What changes is the tax classification, the payroll obligation and the return the entity files.
Related reading
- S corporation owners. How the firm handles the election, the salary and the 1120-S.
- S corp salary and distributions. The number the whole saving depends on.
- Accountable plan reimbursements. What the election changes about getting costs out of the company.
- Reducing self-employment tax. The alternatives before the election is worth it.
- The QBI deduction. The threshold that creates the second breakeven.
- LLC or S corp for real estate agents. The same decision with commission income.
- SEP IRA versus solo 401(k). What the salary has to support once there is one.
Schedule a call
A short conversation about your situation, our read on it, and whether it is a mutual fit. We can run your own profit through both treatments and tell you what the election is worth before March 15 rather than after it.
Sources. Entity classification and the default treatment of an LLC are Reg. section 301.7701-3(a), (b)(1) and (c)(1)(v)(C), the last of which treats a timely S election as an election to be classified as an association. Eligibility is section 1361(b)(1), and the election deadlines and late relief are section 1362(b)(1), (b)(3) and (b)(5). Self-employment tax and the limited partner exclusion are section 1402(a), with rates at section 1401; Social Security and Medicare rates on wages are section 3101, and the $184,500 wage base for 2026 is published by the Social Security Administration. The qualified business income deduction and its W-2 wage limitation are section 199A(b)(2)(B), and the 2026 threshold amounts of $201,750 and $403,500 are section 4.26 of Rev. Proc. 2025-32. This article is general information about 2026 and is not advice for your situation. Figures in the illustration are rounded and assume a reasonable salary and profit below the Social Security wage base.
