LLC vs S Corp in 2026: The Tax Election, Not the Entity (With Real Payroll Math)

An LLC is a legal entity you form with a state. An S corporation is a federal tax election you file with the IRS. The Google query treats them as rivals. They are not. You form the LLC (or a corporation). Then you decide whether that entity should be taxed under subchapter S. Mix those jobs and you pay twice — once in self-employment tax you did not need to pay, and again in payroll and an 1120-S you did not need to file.

Key Takeaways

• They are not the same category. An LLC is state-law liability wrapping. An S corp is Form 2553. The real question is whether a profitable, owner-operated LLC should elect S taxation.
• The saving is employment tax, not income tax. A default single-member LLC pays self-employment tax of 15.3% (12.4% Social Security + 2.9% Medicare) on 92.35% of net earnings. An S corp pays FICA only on a W-2 salary. Distributions above that salary are not subject to SE tax or FICA.
• The 2026 Social Security cap is $184,500. SSA's contribution and benefit base is $184,500. Employee and employer each pay 6.2% OASDI up to that wage, or $11,439. Medicare 1.45% each has no cap. Self-employed OASDI is 12.4% on the same base.
• QBI cuts the headline saving. Wages reduce qualified business income. IRS Rev. Proc. 2025-32 sets the 2026 §199A threshold at $403,500 married filing jointly ($201,750 for most other returns). Below the threshold, a 20% QBI deduction still applies — and moving profit into salary shrinks it.
• The 2026 calendar-year window closed. Form 2553 is due no later than two months and 15 days after the year begins — March 15 for a calendar year, next business day if that date is a weekend (IRC §7503). March 15, 2026 was a Sunday, so the 2026 election was due March 16. File now for 2027, or ask a CPA about late-election relief under Rev. Proc. 2013-30. Gusto Solo starts at $49 a month for owner-only pay. That is the meter. 1120-S prep is a CPA quote.

The category error

You form an LLC with your secretary of state. Liability, ownership, and the operating agreement live there. For federal tax, a single-member LLC is a disregarded entity: profit lands on Schedule C. A multi-member LLC defaults to a partnership on Form 1065. Either can elect to be taxed as a corporation, then elect S. A C corporation can elect S directly. You do not "form an S corp" at the state.

That is why LegalZoom-style pages that rank "which structure is better" bury the lede. The structure is usually already the LLC. The decision is whether to add payroll, a reasonable salary, Form 1120-S, and shareholder consents.

The election also has a ceiling. Form 2553 eligibility: domestic entity, no more than 100 shareholders, shareholders limited to individuals, estates, certain trusts, and specified exempt organizations, no nonresident alien shareholders (with a narrow ESBT exception), and only one class of stock. Banks using the §585 reserve method, subchapter L insurance companies, and DISCs cannot elect. A priced-equity startup that needs preferred stock is not an S corp candidate. That company is a C corporation, which is a different post.

How the tax actually splits

Default LLC (single member). Net profit is self-employment income. Schedule SE multiplies net earnings by 92.35%, then applies 15.3%. You deduct the employer-equivalent half of SE tax from adjusted gross income. That deduction lowers income tax. It does not lower the SE tax itself.

LLC (or corporation) with an S election. The entity files Form 1120-S. The owner who works in the business takes a W-2 salary. The corporation withholds the employee 7.65% and pays a matching 7.65%. Remaining profit passes through on a K-1 as a distribution. Distributions are not subject to FICA or SE tax. They are still ordinary income for income tax.

The IRS does not let you set the salary at $1. S corporations must pay reasonable compensation to a shareholder-employee for services before non-wage distributions. The agency can reclassify distributions as wages. Court support includes David E. Watson, PC v. United States (8th Cir. 2012) and Veterinary Surgical Consultants, P.C. v. Commissioner. Factors: training, duties, time, what comparable businesses pay, and — the one the IRS emphasizes — whether gross receipts come from the shareholder's personal services, from other employees, or from capital and equipment.

A consultant whose receipts are her hours is not a $20,000 salary on $180,000 of profit. The salaries in the table below are illustrations so the arithmetic is visible. They are not a recommended wage.

The 2026 numbers that actually move

Checked 18 August 2026 against official pages:

Payroll is not optional after the election. An S corporation is liable for employment taxes on Form 941 (or 943) and FUTA on Form 940, plus W-2/W-3. That is why the election drags a payroll platform into a company that previously ran draws.

Worked math at three profit levels

Assumptions, so the table is readable: calendar-year single-member service business, all receipts from the owner's work, federal only, QBI fully allowed at 20% of QBI, 22% ordinary rate on the QBI difference, no state entity tax, no additional Medicare. LLC QBI is net profit minus one-half of SE tax. S corp QBI is profit after the illustrated W-2 (employer FICA also reduces ordinary income; omitted here so the QBI column is just the wage split). FUTA at the typical 0.6% credit rate on the first $7,000 of wages is $42 and is omitted from the FICA column.

The $50,000 row is the trap: gross SE savings vanish once QBI and a $49 payroll seat share the column. The $150,000 row is why people elect. The $100,000 row is the argument with your CPA. Change the salary, filing status, or state, and the net moves.

Two things the table does not do. It does not price Form 1120-S preparation — that is a CPA quote, not a public rate card. It does not invent a universal break-even. Blogs that print "$60,000–$80,000 and you should elect" are compressing this table into a slogan. Run your profit, a defensible salary, your marginal rate, and the actual payroll bill.

What the election costs besides tax

Payroll, every quarter. Owner draws stop. You need a reasonable wage, withholdings, 941s, a W-2, and unemployment accounts. Gusto Simple is $49 a month plus $6 per person for single-state payroll; Solo is the owner-only packaging of that job and starts at $49. Patriot and OnPay sit in the same band on the startup payroll ranking. ADP-scale payroll companies are the wrong buy for one shareholder-employee.

A separate business return. Form 1120-S and K-1s. S corporations that file 10 or more returns in a calendar year must e-file 1120-S. The owner still files Form 1040.

Reasonable-comp risk. A salary that exists only to manufacture distributions is the audit issue. If the business is the owner's time, look at what that role actually pays before you pick a number that makes the blog table look pretty.

Ownership rigidity. One class of stock. No preferred. No nonresident alien shareholders. One hundred-shareholder cap. The election generally stays until it is terminated or revoked; a new election usually needs IRS consent before the fifth tax year after a termination.

State extras. Some states impose an entity-level tax on S corps that the federal election does not erase. That is a state question, not a federal one. Do not copy a national break-even into California or New York without the franchise line.

Books that can survive payroll. You need a wage, a distribution, and a clean split. That is a job for accounting software, not a spreadsheet of Venmo draws.

When to stay default LLC

Keep disregarded or partnership taxation when profit is lumpy, below the range where FICA savings clear payroll plus an 1120-S, or when you still need flexible profit splits, a foreign owner, or more than one class of economic rights. A seed company that is not yet profitable does not elect S to look legit — there is no SE tax to save on a loss. A company that will take a priced round should not elect S and then unwind it for preferred stock.

When the election is the job

Elect when net profit is consistently high enough that employment-tax savings survive a reasonable salary, QBI shrinkage, payroll, and the extra return — and the owner is a U.S. person who will actually run payroll. Service businesses with stable profit and no venture path are the classic fit. The salary has to look like the work. The distribution is the residual, not the plan.

If you are still hiring the people who generate the receipts, the ATS and the entity election are different jobs.

Form 2553: timing, late relief, and the EIN

File Form 2553 no later than two months and 15 days after the beginning of the tax year the election is to take effect, or at any time during the preceding tax year. All shareholders must consent. An LLC without stock enters ownership percentage instead of share count.

For a calendar-year entity that wanted S status for 2026, that window closed 16 March 2026. Filing in August 2026 is, by default, an election for 2027. Late-election relief under Rev. Proc. 2013-30 can still make a late 2553 effective for the intended year if you meet the reasonable-cause and consistent-reporting tests (generally within 3 years and 75 days of the intended effective date, with a longer path if returns were already filed consistent with S status). Write "FILED PURSUANT TO REV. PROC. 2013-30" at the top. That is a CPA motion, not a self-serve one.

You need an EIN before the 2553. Apply free at IRS.gov/EIN. Do not pay a formation mill for a number the IRS issues in a session. The IRS also wants the state entity to exist first; applying for an EIN before articles are filed can delay the number.

The service center generally notifies you of acceptance within 60 days. If you hear nothing in two months, follow up at 800-829-4933. Do not file 1120-S for a year before the election takes effect.

A 15-minute way to choose

1. Write last-twelve-months net profit, and whether that profit is stable. A one-time spike is not an election.
2. Write a salary you could defend to the IRS: what a comparable hire would earn for the hours you actually work.
3. Compute LLC SE tax: profit × 0.9235 × 0.153, with Social Security only up to $184,500.
4. Compute S corp FICA: salary × 0.153. Subtract. Then subtract 22% (or your real marginal rate) of the QBI you lose when wages replace QBI.
5. Subtract a year of payroll (Gusto Solo starts at $49 a month) and a quoted 1120-S. If step 4 minus step 5 is still clearly positive, talk to a CPA about Form 2553 for 2027 — or late relief if 2026 returns will be filed consistent with S. If it is not, stay default and revisit when profit is no longer a maybe.

Frequently Asked Questions

Is an S corp better than an LLC in 2026?

It is not a vs. Form the LLC for liability. Elect S only if employment-tax savings on a reasonable salary beat payroll, an 1120-S, and the QBI you give up. Below roughly the $50,000 profit row in the table, the election is usually a cost. Above $150,000 of stable, owner-earned profit, it is usually a save. The middle is a worksheet, not a slogan.

Can an LLC be an S corp?

Yes. A domestic LLC that meets the shareholder tests files Form 2553. A timely 2553 also serves as the corporate classification election, so a separate Form 8832 is not required.

What is the Form 2553 deadline for 2027?

Any time during 2026, or no later than 15 March 2027 (next business day if that date is a weekend or D.C. legal holiday). New entities have a window of two months and 15 days from the start of their first tax year.

Do I need payroll if I elect S?

Yes if you work in the business. Reasonable compensation is wages. Draws are not a substitute. Owner-only products exist specifically for this — Gusto Solo starts at $49 a month.

Will an S election help me raise venture capital?

No. One class of stock and a 100-shareholder cap are incompatible with preferred equity. Priced rounds want a C corporation.

Does the S election change my liability protection?

No. Limited liability comes from the state entity, not from subchapter S. The election changes how the IRS taxes the profit.

Methodology

We compared default LLC taxation with an LLC (or corporation) that has a valid S election, on category, 2026 employment-tax math, QBI interaction, eligibility, filing burden, and timing. Rates and caps from official pages checked on 18 August 2026: IRS self-employment tax, SSA contribution and benefit base ($184,500), Form 2553 instructions, IRS S corporation filing chart, IRS reasonable-compensation page, and Rev. Proc. 2025-32 for §199A thresholds. Payroll dollars are Gusto's published Solo/Simple prices. 1120-S prep is not a public rate card. Salaries in the table are illustrations, not reasonable-comp opinions. Not tax advice.