LLC vs. S Corporation: Which Tax Setup Could Save Your Small Business Money?

We often hear people say that you should elect S corporation taxation for your business. Is this right for you?

Myth: You should go with S corp.

Reality: There is no universal profit threshold at which every LLC should elect S corporation taxation.

An LLC and an S corporation are not competing business types. An LLC is a legal entity created under state law, while an S corporation is a federal tax election available to eligible businesses — and an LLC can generally elect it without changing its underlying entity.

For some profitable small businesses, S corporation taxation can reduce employment taxes. But the savings come with additional payroll, accounting, tax-return, and compliance work. So the right question isn't "Should I have an LLC or an S corporation?" — it's whether the tax savings would outweigh the added cost and complexity.

Where the Potential Tax Savings Come From

For a single-member LLC with default tax treatment, the owner's net business profit is generally subject to self-employment tax — 15.3%, before adjustments, wage-base limits, and other rules — on top of federal income tax.

With S corporation taxation, a working owner generally becomes a shareholder-employee. The S corporation must pay reasonable compensation through payroll, and those wages are subject to employment taxes. But after salary and expenses, the remaining profit passes through to the owner and generally isn't treated as wages for Social Security and Medicare taxes. That gap is where the potential savings come from.

Keep in mind: income tax still applies whether or not the owner takes the cash out. The benefit is an employment-tax difference, not an income-tax exemption.

LLC vs. S Corporation: At a Glance

Default-taxed LLC

Legal entity: LLC

Federal tax treatment: Generally disregarded entity for one owner; partnership for multiple owners

Owner compensation: Generally draws/distributions

Employment taxes: Generally apply to net self-employment earnings

Federal return: Schedule C for a typical one-owner business

Payroll: Generally not required solely to pay the owner

Administration: Generally simpler

LLC taxed as an S corporation

Legal entity: LLC remains an LLC

Federal tax treatment: S corporation

Owner compensation: W-2 wages plus potential distributions

Employment taxes: Apply to wages; qualifying distributions generally aren't wages

Federal return: Form 1120-S plus Schedule K-1

Payroll: Required for a working shareholder-employee

Administration: More payroll, bookkeeping, and filing requirements

Reasonable Compensation: The Requirement That Holds the Strategy Together

This strategy only works if the shareholder-employee is paid reasonable compensation through payroll. The goal is not an artificially low salary — it's distinguishing fair pay for the services you provide from your return as an owner.

The IRS can challenge unreasonably low compensation and reclassify distributions as wages. Factors include your duties, experience, time devoted to the business, and what comparable businesses pay for similar work. Document that analysis — it drives the numbers in the example below.

A Simple Example: A $140,000 Consulting Business

Consider a solo consulting business with $140,000 of net profit. Here are the inputs before any math:

Profit: $140,000 of net business profit.

Reasonable salary: $85,000, based on the owner's duties, experience, time commitment, location, and comparable pay.

Under default LLC taxation, net earnings are generally subject to self-employment tax (within wage-base limits and other rules), plus income tax.

Under S corporation taxation, only the $85,000 salary goes through payroll; the remaining pass-through profit generally isn't treated as wages for Social Security and Medicare taxes.

Default LLC taxation

The $140,000 of net earnings is generally exposed to self-employment tax, in addition to income tax.

S corporation taxation

Only the $85,000 salary is subject to payroll taxes; the remaining pass-through profit generally isn't treated as wages. That gap is the potential savings, before payroll-administration and filing costs.

The potential savings come from that gap — but they aren't simply 15.3% of the distribution. The actual result also depends on the owner's other wages, the Social Security wage base, the QBI deduction, retirement contributions, state taxes, and the cost of maintaining the structure. That's why the decision calls for a complete projection, not a single tax-rate calculation.

The Cost of S Corporation Tax Treatment

Tax savings are only one side of the equation. An S election generally adds: regular payroll runs and tax deposits, quarterly payroll filings, W-2 reporting, federal and state unemployment taxes, a separate Form 1120-S with Schedule K-1s, and heavier bookkeeping — wages, distributions, reimbursements, and shareholder basis must each be tracked properly, plus any additional state filings.

Those costs matter. If an S corporation saves $5,000 in employment taxes but costs nearly as much in payroll service, bookkeeping, and tax preparation, the net benefit may be much smaller than it first appears.

When an S Election Fits — and When It Doesn't

As noted at the outset, no single profit number makes an S election right for every LLC. Online advice sometimes names a trigger profit level, but the real break-even depends on compensation, other wages, state taxes, retirement planning, and administrative costs.

An S election may be worth modeling when:

Profit is consistently above reasonable compensation, leaving meaningful income attributable to ownership.

Cash flow can support payroll, which has firm deadlines even when customer payments fluctuate.

The books are reliable — wages, distributions, reimbursements, and basis tracked appropriately.

Projected savings clearly exceed the added costs of payroll, bookkeeping, tax preparation, and filings.

The ownership structure qualifies, given S corporation restrictions on shareholders and stock.

Default LLC taxation may remain the better choice when most of the profit would count as reasonable compensation anyway, when profit is low or unpredictable, when the business expects losses or heavy reinvestment, when compliance costs would consume the savings, or when the ownership doesn't fit S corporation requirements.

One more consideration — retirement. For a shareholder-employee, retirement-plan contributions generally depend on W-2 wages rather than distributions, so a lower salary can reduce retirement contributions even as it trims payroll taxes.

Don't Forget the QBI Deduction

The qualified business income (QBI) deduction also affects the comparison: reasonable compensation paid to the shareholder isn't qualified business income, while qualifying pass-through profit may be. Weigh it alongside payroll taxes, retirement contributions, and the owner's overall picture — the goal is to compare the complete tax picture, not optimize one line of the return in isolation.

Five Questions to Ask Before Filing Form 2553

What salary is reasonable? Document duties, time commitment, experience, location, and comparable pay.

What is the expected recurring profit? Use normalized results — not one strong month or gross revenue.

What will the structure cost to run? Include payroll, bookkeeping, tax preparation, state filings, and professional fees.

How does it affect the rest of the tax return? Consider other wages, retirement, health insurance, and the QBI deduction.

Does the ownership qualify? Confirm the shareholder restrictions, 100-shareholder limit, and one-class-of-stock requirement.

The Answer Comes From a Side-by-Side Projection

Start both scenarios from the same facts — expected profit, reasonable compensation, payroll taxes, other household income, retirement goals, QBI, Maryland and other state taxes, and operating costs — and project the complete picture. If the benefit remains meaningful after costs, the election may be worth pursuing. If the savings are thin or depend on an unrealistic salary, the simpler default may be the better structure.

Considering an S Corporation Election?

Ascend Tax Advisory can model both scenarios using your actual numbers — federal and Maryland tax effects, reasonable compensation, retirement and QBI considerations, and the payroll and filing requirements of an S election.

Disclaimer: This article is for general educational purposes and does not constitute tax or legal advice. Tax results depend on individual facts and current law. Consult a qualified tax professional and, when appropriate, an attorney before changing an entity or tax election.