S Corp vs LLC: Self-Employment Tax in 2026

Tax47

Tax Calculator USA

Estimate your refund as you read

Tax47 builds a federal return from your W-2s and 1099s.

Free · No sign-up needed

Quick Answer: S Corp vs LLC Self-Employment Tax in 2026

The question itself is built wrong, which is why the answers online are such a mess. LLC and S corp are not competing choices. An LLC is a state-law entity. An S corp is a federal tax election made on Form 2553. What most people are actually asking about is an LLC that elects S corp taxation.

An LLC taxed as a sole proprietorship pays 15.3% self-employment tax on 92.35% of all net profit. An S corp splits that same profit into a W-2 salary (which carries FICA) and distributions (which carry none). The saving is 15.3% of whatever you move to the distribution side, and nothing more.

Think of the election less as a loophole and more as a subscription with a fixed annual fee: $2,000 to $6,000 of payroll, filings, and state charges, by common practitioner estimates. Below a certain profit level the fee eats the saving. The rest of this article works out where that line sits.

Key Takeaways

It is an election, not an entity. You keep your LLC. Form 2553 changes only how the profit is taxed.
The saving equals payroll tax on the distribution slice. Below the $184,500 Social Security wage base that runs about 14% of the distributions, not a clean 15.3%.
Reasonable compensation is a facts test with real case law. The IRS lists nine factors. Watson reset a CPA’s $24,000 salary to $91,044, and the Eighth Circuit upheld it.
The overhead is fixed, so scale decides. Fixed cost plus a variable saving gives you a break-even profit level, usually quoted at $60,000 to $80,000 of net profit.
QBI cuts both ways. Below the 2026 Section 199A thresholds ($201,750 single and head of household, $403,500 MFJ), a salary shrinks your deduction. Above them, too small a salary caps it.
Above the wage base the math flattens. Once net earnings clear $184,500, each extra distribution dollar only escapes 2.9% Medicare, not 15.3%.
The 2026 election window has closed. March 15 is the regular deadline, so a 2026 election now needs Rev. Proc. 2013-30 relief. March 15, 2027 is the live date for tax year 2027.

What Actually Gets Hit by the 15.3%

Self-employment tax is 12.4% for Social Security plus 2.9% for Medicare, charged on 92.35% of net profit, with the Social Security half capped at the first $184,500 of earnings for 2026. That is the whole mechanic, and we cover it line by line in how the 15.3% self-employment tax works in 2026.

An S corp repeals none of that; it reclassifies the income instead. Salary paid to the owner is wages, so it carries the same 6.2% and 1.45% from the employee plus a matching 6.2% and 1.45% from the corporation. Distributions of the remaining profit carry no FICA and no SE tax at all.

The same business, both ways

A single-owner business with $150,000 of net profit, taxed two ways (2026)
Line	LLC taxed as sole proprietor	LLC taxed as S corp
Net profit before owner pay	$150,000	$150,000
Owner W-2 salary	Not applicable	$70,000
Base for SE tax or FICA	$138,525 (92.35% of profit)	$70,000 (wages only)
Social Security and Medicare paid	$21,194	$10,710
Profit left as distributions	None (all of it is taxed)	$74,645 via Schedule K-1
Payroll tax difference	Baseline	$10,484 less

The K-1 figure is $74,645 rather than $80,000 because the corporation deducts its own 7.65% share of FICA ($5,355) before the profit passes through. That offset gets forgotten constantly.

There is a second one. A sole proprietor deducts half of their SE tax above the line, while an S corp owner gets no equivalent write-off for the employee half of FICA withheld from their paycheck.

Why the saving is not a clean 15.3%

Notice that 15.3% of the $80,000 distribution slice would be $12,240, but the actual difference is $10,484. The gap comes from the base each tax is charged on: a sole proprietor pays on 92.35% of profit, while the S corp pays FICA on 100% of wages.

A closer rule of thumb, below the wage base, is about 14.1% of the distribution slice, minus about 1.2% of the salary. Run your own numbers with the S corp reasonable salary calculator before you trust any percentage shorthand.

Reasonable Compensation: The IRS Standard, Not the 60/40 Rule

All of that saving rests on the word legitimately. The IRS position is that distributions to a corporate officer must be treated as wages to the extent they are reasonable compensation for services actually rendered. Underpay yourself and the agency can simply recharacterize the difference.

The nine factors the IRS actually applies

There is no percentage in the standard. The IRS weighs:

Training and experience
Duties and responsibilities
Time and effort devoted to the business
Dividend history
Payments to non-shareholder employees
Timing and manner of paying bonuses to key people
What comparable businesses pay for similar services
Compensation agreements
The use of a formula to determine compensation

The gross-receipts test

Sorting the revenue by where it came from helps. Receipts traceable to the shareholder’s own personal services should show up as wages. Receipts generated by non-shareholder employees, by capital, or by equipment can reasonably be taken as distributions.

This is why a solo consultant billing their own hours has almost no room to run a small salary, while an agency owner with six employees and a real book of recurring revenue has quite a lot.

What Watson tells you about the downside

In David E. Watson, P.C. v. United States, a CPA with roughly 20 years of experience worked 35 to 45 hours a week and reported wages of $24,000 against distributions of about $203,651 in 2002 and $175,470 in 2003. The court set his reasonable compensation at $91,044 a year, and the Eighth Circuit affirmed in 2012.

That case is also the reason the “50/50 rule” and “60/40 rule” you see repeated online deserve no weight. The IRS has never blessed a percentage. A low owner salary paired with large distributions is a documented audit flag, which we cover alongside the others in 2026 IRS audit triggers.

A defensible method

Benchmark your role against outside data (Bureau of Labor Statistics wage data, industry salary surveys, comparable job postings), write down the comparison, and keep it in the file with the year it was prepared. Redo it when your role or revenue changes materially. Documentation is what turns a number into a position you can defend.

What an S Corp Actually Costs You Every Year

The saving scales with profit while the cost barely moves, and that mismatch is what creates a break-even at all. The dollar ranges below are practitioner estimates rather than IRS or statutory figures.

Payroll processing: a monthly service fee, quarterly Form 941 filings, and an annual W-2 and W-3. Commonly quoted at $1,200 to $2,400 a year.
A separate business return: Form 1120-S for the corporation plus a Schedule K-1 that flows to your 1040. Preparation is commonly quoted at $1,500 to $3,500 a year.
Unemployment tax on your own wages: FUTA is 6.0% on the first $7,000 of each employee’s wages, dropping to a 0.6% net rate with the full 5.4% credit for timely state unemployment tax. State SUTA rates and wage bases vary.
State entity charges: franchise taxes, minimum-entity fees, and in some states a separate S corp tax. California’s 1.5% S corp tax with an $800 minimum is the classic break-even killer, and a handful of states do not recognize the federal election at all.
Workers’ compensation: required for owner-officers in some states once you are on payroll.
Bookkeeping discipline: separate books, real payroll runs, corporate formalities, and shareholder basis tracking. This is a time cost even when it is not a cash cost.

Combined, CPAs commonly quote $2,000 to $6,000 a year. Treat the low end as unrealistic if you are in a high-fee state or you want a professional handling the 1120-S.

Tax47

Tax Calculator USA

App Store Google Play

Check your own refund in Tax47

The Break-Even: Where the Election Starts Paying

Most articles just assert a break-even number. The formula underneath it is short enough to check yourself.

While net earnings stay under the $184,500 Social Security wage base:

Annual payroll-tax saving = (15.3% x 92.35% x net profit) - (15.3% x salary)

Subtract your annual overhead, then adjust for the QBI change covered in the next section. Above the wage base, the Social Security portion is already capped for the sole proprietor, so each additional distribution dollar only escapes the 2.9% Medicare rate.

Payroll-tax saving by profit level, 2026 rates (illustrative salaries, $3,000 assumed overhead)
Net profit	Illustrative salary	Sole-prop SE tax	S corp FICA	Gross saving	Net of overhead
$60,000	$45,000	$8,478	$6,885	$1,593	-$1,407
$80,000	$55,000	$11,304	$8,415	$2,889	-$111
$120,000	$70,000	$16,955	$10,710	$6,245	$3,245
$200,000	$100,000	$28,234	$15,300	$12,934	$9,934
$300,000	$130,000	$30,912	$19,890	$11,022	$8,022

Salaries in that table are illustrative, not recommendations. They exist to show the shape of the curve.

What the table shows that most pages skip

The election loses money below roughly $80,000 of profit. At $60,000 the payroll saving does not clear a $3,000 overhead bill. That is where the widely quoted $60,000 to $80,000 range actually comes from.

The saving stops growing above the wage base. Look at the $300,000 row: the gross saving is lower than at $200,000. Once the sole proprietor’s Social Security portion is already capped at $184,500, a bigger salary still costs a full 15.3% while the extra distributions only avoid 2.9%. Shifting more profit to distributions stops being worth much.

Two businesses at the same profit can land on opposite sides. A solo consultant at $120,000 may only defend a $95,000 salary, which shrinks the saving to about $2,400. An agency owner at the same profit with three employees might defend $60,000. Same revenue, opposite answer.

One partial offset at high incomes: the 0.9% Additional Medicare Tax applies to self-employment earnings above $200,000 (single), $250,000 (MFJ), or $125,000 (MFS) but never to distributions, so it widens the S corp edge slightly at the top of the table.

The QBI Trap: When a Lower Salary Costs More Than It Saves

This is where most comparisons go wrong, because they describe the Section 199A interaction in one direction when there are two. Which one applies depends entirely on which side of the threshold you sit. The full rules are in our guide to the Section 199A QBI deduction for 2026.

The 2026 thresholds: $201,750 for single and head of household (phasing in to $276,750), and $403,500 for married filing jointly (phasing in to $553,500).

Below the threshold: a salary shrinks your deduction

Owner W-2 wages are not qualified business income. A sole proprietor’s whole net profit (less the deductible half of SE tax) is QBI. Convert part of it into salary and you convert QBI into non-QBI wages, giving up 20% of that salary as deduction.

Take the $120,000 row above, single filer, no other income, standard deduction of $16,100.

As a sole proprietor: QBI is $111,522 after the SE tax adjustment. Taxable income before the deduction is $95,422, and the 20%-of-taxable-income limit caps the deduction at $19,084. Taxable income lands at $76,338.
As an S corp with a $70,000 salary: QBI is only the $44,645 K-1, so the deduction is $8,929. Taxable income lands at $89,616.

That is $13,278 more taxable income, all of it in the 22% bracket, for roughly $2,921 of extra income tax. Set against the $3,245 net payroll saving, the election nets about $324 at $120,000 of profit. Effectively a wash, for a year of payroll filings.

Run the same comparison at $200,000 of profit and the picture improves: the QBI cost rises to about $5,269 (24% bracket), but the payroll saving nets $9,934, leaving roughly $4,665. What the election really rewards is scale, and a big profit number on its own does not always supply it.

Above the threshold: too small a salary caps your deduction

Past the threshold the 50%-of-W-2-wages limitation switches on, and the incentive flips. A sole proprietor with no employees pays no W-2 wages at all, so the deduction phases toward zero. An S corp paying the owner real wages keeps a wage base to test against, and paying too little now becomes the expensive mistake.

Same election, opposite advice, decided entirely by which side of $201,750 or $403,500 your taxable income falls on. If you are in a specified service trade or business, the deduction disappears completely once you pass the phase-in top, no matter how you pay yourself.

One floor worth knowing: from 2026 the deduction has a $400 minimum for taxpayers with at least $1,000 of QBI from an active business. Test your own figures with the QBI deduction calculator.

What a Low Salary Costs You Off the Tax Return

Minimizing salary is not free even when the tax math favors it.

Retirement contributions shrink. The solo 401(k) elective deferral is $24,500 for 2026 ($8,000 more at age 50 or older), but the employer contribution is a percentage of W-2 wages, and total annual additions are capped at $72,000. A small salary caps the employer side hard. The solo 401(k) contribution calculator shows the effect.
Social Security benefits accrue on wages, not distributions. Years of a minimal salary lower the earnings record that eventually sets your benefit.
Lenders underwrite W-2 income. Mortgage and business-loan qualification often leans on wages and tax return income, and a stripped-down salary can shrink what you qualify for.

So take the election if the math works. Just resist the urge to drive the salary to the floor because the payroll-tax arithmetic says you can get away with it.

How to Elect: Form 2553, Deadlines, and Late Relief

To make the election, the business must be a domestic corporation or an eligible entity, have no more than 100 shareholders, limit shareholders to individuals and certain trusts and estates (no partnerships, corporations, or nonresident aliens), and have only one class of stock. Form 2553 makes the election and must be signed by every shareholder. The corporation then files Form 1120-S each year.

Timing

The election must be filed no later than two months and 15 days after the beginning of the tax year it takes effect, which is March 15 for a calendar-year business, or at any time during the preceding tax year.

For a 2026 election that window has already passed. Two paths remain:

Tax year 2027: file by March 15, 2027, or any time during 2026. Filing now for 2027 is the clean route.
Tax year 2026, late: Rev. Proc. 2013-30 offers simplified relief if you had reasonable cause, the entity and all shareholders reported consistently with S corp treatment, and you file within 3 years and 75 days of the intended effective date. Write “INCLUDES LATE ELECTION(S) FILED PURSUANT TO REV. PROC. 2013-30” at the top of the Form 1120-S.

The consistent-reporting condition is the hard one. It generally means you were already running payroll and behaving like an S corp, not deciding retroactively in December that you would have preferred to.

Getting out again

Revoking is possible, but once you revoke you generally wait five years before re-electing without IRS consent. Treat the decision as a multi-year commitment rather than something to toggle annually.

If you decide to stay a sole proprietor, keep working the deduction side instead: our guide to Schedule C business deductions for 2026 covers what actually reduces the profit the 15.3% applies to, and the estimated quarterly tax calculator handles the payment schedule.

Model Both Structures Before You File

Nothing above substitutes for running your own numbers, because the answer turns on three inputs nobody can guess for you: your defensible salary, your state’s fees, and where your taxable income sits relative to the Section 199A thresholds.

The Tax47 app (tax47.app) handles Schedule C and W-2 plus Schedule K-1 as separate form types on a return, so you can build the comparison directly: one return as a sole-prop LLC with Schedule C only, a second as an S corp owner with a W-2 for the salary and a K-1 for the distribution. Self-employment tax, the QBI deduction, and the 2026 One Big Beautiful Bill changes are applied automatically, and the estimated refund updates as you go. Additional returns beyond the first are a premium feature.

To size the pieces first, start with the S corp reasonable salary calculator, check the baseline with the self-employment tax calculator, and price the wage side with the FICA payroll tax calculator. The full set lives in the tax calculator library.

Sources & References

IRS: S Corporation Compensation and Medical Insurance Issues: the reasonable-compensation authority, including the nine factors and the gross-receipts test.
IRS: S Corporations: eligibility rules, the 100-shareholder limit, one class of stock, and Form 1120-S.
IRS: Instructions for Form 2553: the two months and 15 days election deadline and filing mechanics.
IRS: About Form 2553: the election form itself and its signature requirements.
IRS: Rev. Proc. 2013-30 (PDF): simplified relief for late S corp elections.
IRS: Topic No. 759, Form 940 and FUTA Tax: the 6.0% rate, $7,000 wage base, 5.4% credit, and 0.6% net rate.
IRS: Self-Employment Tax: the sole-proprietor side of the comparison, including the 92.35% factor.
IRS: Qualified Business Income Deduction: Section 199A basics and the W-2 wage limitation.
SSA: Contribution and Benefit Base: the official 2026 Social Security wage base of $184,500.
David E. Watson, P.C. v. United States, 668 F.3d 1008 (8th Cir. 2012): the leading reasonable-compensation case, $24,000 reported against $91,044 imposed.
SBA: Choose a Business Structure: neutral background on how entity type and tax classification differ.

This article is for educational purposes only and is not tax, legal, or financial advice. Tax rules change periodically, always check current IRS guidance or consult a qualified tax professional.

Tax47

Tax Calculator USA

App Store Google Play

See your refund before you file

Tax47 checks your return for credits and deductions you may qualify for, then shows the refund or the amount you owe.

Free · No sign-up needed

Scan to get the app

Frequently Asked Questions

Does an S corp really avoid self-employment tax?

Partly. An S corp owner pays FICA on their W-2 salary (6.2% Social Security plus 1.45% Medicare withheld, matched by the corporation, for the same 15.3% combined) but pays no self-employment or payroll tax on distributions. The saving is roughly 15.3% of whatever profit is legitimately taken as distributions, below the $184,500 Social Security wage base.

How much profit do I need before an S corp is worth it in 2026?

Most practitioners put the break-even around $60,000 to $80,000 of net profit, because $2,000 to $6,000 of annual payroll, tax-return, and state fees have to be cleared first. Those are professional estimates, not IRS figures. Your own number depends on your defensible salary, your state's fees, and how the election changes your QBI deduction.

What is a reasonable salary for an S corp owner?

Whatever a comparable business would pay someone else for the same work. The IRS weighs training and experience, duties and responsibilities, time and effort devoted to the business, dividend history, payments to non-shareholder employees, timing and manner of paying bonuses, what comparable businesses pay for similar services, compensation agreements, and any formula used to set pay. The 50/50 and 60/40 rules are practitioner shorthand, not IRS policy.

Can an LLC be taxed as an S corp?

Yes, and that is the usual setup. An LLC is a state-law entity. S corp is a federal tax classification elected on Form 2553. You keep the LLC, its operating agreement, and its liability protection, and you change only how the IRS taxes the profit.

What is the deadline to elect S corp status?

Form 2553 must be filed no later than two months and 15 days after the start of the tax year the election takes effect, which is March 15 for a calendar-year business, or any time during the preceding tax year. The regular window for tax year 2026 has already closed, so a 2026 election now depends on late-election relief under Rev. Proc. 2013-30, available within 3 years and 75 days of the intended effective date.

Does an S corp reduce my QBI deduction?

It can. Owner W-2 wages are not qualified business income, so below the 2026 Section 199A thresholds ($201,750 single and head of household, $403,500 married filing jointly) paying yourself a salary shrinks your QBI base and costs you 20% of that salary as deduction. Above those thresholds the 50%-of-W-2-wages limit reverses the incentive, and a salary set too low caps the deduction instead.

What does it actually cost to run an S corp?

Payroll processing, quarterly Form 941 filings, an annual W-2 and W-3, a separate Form 1120-S return with a K-1 to your 1040, FUTA (6.0% on the first $7,000 of wages, 0.6% net with the full state credit) and state unemployment tax on your own wages, plus any state franchise or minimum-entity fee and workers' compensation coverage. Practitioner estimates commonly total $2,000 to $6,000 a year.

What happens if I pay myself too little salary?

The IRS can recharacterize distributions as wages and assess back employment taxes, interest, and penalties. In David E. Watson, P.C. v. United States, a CPA who reported $24,000 in wages against roughly $175,000 to $200,000 in annual distributions had his reasonable compensation reset to $91,044 a year, and the Eighth Circuit affirmed that result in 2012.