Choosing between a single-member LLC’s default sole-proprietor tax treatment and an S-corporation election is a common decision point for small-business owners. Although the S-Corp vs LLC comparison often focuses on employment-tax savings, those savings alone do not determine whether the election is financially beneficial.

A complete analysis must also consider reasonable compensation, the qualified business income deduction, payroll and tax-preparation costs, retirement-plan contribution objectives and the resulting federal, state and local compliance requirements.

An S-corporation election can reduce a business owner’s overall tax and compliance cost, but generally only when the business earns enough sustainable profit above reasonable compensation to justify the additional payroll, tax filings, administrative costs and compliance obligations. This guide explains the federal, New York State and New York City tax and compliance considerations involved in comparing an S-corporation election with a single-member LLC’s default tax treatment.

1.0 LLC vs. S Corporation: What Is the Difference?

An LLC is a legal entity created under state law to protect personal assets. An S corporation is a tax classification obtained through an election.

A single-member LLC is generally treated as a disregarded entity for federal income-tax purposes. The owner reports the company’s income and expenses on Schedule C of Form 1040.

An eligible LLC can elect to be taxed as an S corporation for federal purposes by filing Form 2553 with the IRS. For New York purposes, a qualifying federal S corporation generally must file Form CT-6 to be treated as a New York S corporation.

The primary tax difference relates to how the owner’s business earnings are treated.

1.1 LLC vs. S Corporation: Key Differences

Table 1: Key Differences Between LLC and S Corporation Tax Treatments

Issue	Single-Member LLC—Default Treatment	LLC Taxed as an S Corporation
Federal business return	Schedule C filed with Form 1040	Separate Form 1120-S
Owner compensation	Owner’s draws; no W-2 salary	Reasonable W-2 compensation required
Employment-tax treatment	Net earnings generally subject to self-employment tax	Salary subject to payroll tax; pass-through income generally not subject to self-employment or payroll tax
Income-tax treatment	Business profit reported directly by owner	Salary and pass-through income reported by owner
Owner payroll required	No	Yes
Bookkeeping complexity	Lower	Higher
Tax-planning flexibility	More limited	Greater, if properly administered
Federal filing deadline	Generally April 15 (with Form 1040)	Form 1120-S generally due March 15 for a calendar-year corporation; the shareholder’s Form 1040 is generally due April 15
New York return	Schedule C income flows to the owner’s applicable New York individual return, generally Form IT-201 or IT-203	Form CT-3-S after approval of the New York S election
NYC business-tax treatment	Generally subject to the 4% UBT when carrying on an unincorporated business in NYC; exemptions and credits may reduce or eliminate the liability	Generally subject to the NYC General Corporation Tax; liability depends on the applicable tax bases

To see when the numbers begin to support an S-corporation election, read our companion case study: S-Corp vs. LLC Case Study: At What Profit Level Does an S-Corporation Election Become Beneficial? The analysis compares $100,000, $150,000, $200,000, and $300,000 of annual profit under 2026 federal tax rules.

2.0 Potential Tax Benefits of an S-Corporation Election

The potential benefit of electing S-corporation treatment arises primarily from separating business earnings into:

Reasonable W-2 compensation paid to the working owner; and
Remaining pass-through business income that is generally not subject to self-employment tax.

The IRS requires an S corporation to pay reasonable compensation to a shareholder-employee for services performed before making non-wage distributions. If compensation is unreasonably low, the IRS may reclassify distributions as wages subject to employment taxes. See the IRS guidance on S-corporation compensation.

A single-member LLC owner taxed as a sole proprietor generally owes self-employment tax on 92.35% of net business earnings. The self-employment tax rate is 15.3%. However, the 12.4% Social Security component applies only up to the 2026 wage base of $184,500. The 2.9% Medicare component generally has no ceiling, and an additional 0.9% Medicare tax may apply above the applicable filing-status threshold.

An S corporation’s pass-through business income is generally not subject to self-employment tax. However, Social Security and Medicare taxes apply to the shareholder-employee’s W-2 compensation.

The S-corporation election does not eliminate federal income tax. The owner generally continues to pay income tax on both W-2 compensation and pass-through business income, regardless of whether all the pass-through income is distributed.

2.1 How QBI Affects the Comparison

The qualified business income deduction can narrow the S corporation’s employment-tax advantage.

Under the LLC’s default tax treatment, QBI generally begins with net business income and is reduced by applicable owner-level deductions attributable to the business, including the deductible portion of self-employment tax.

Under S-corporation treatment, the owner’s W-2 compensation is not a qualified business income. Employer payroll taxes and other deductible corporate expenses also reduce the remaining pass-through income potentially eligible for the deduction. As a result, an S-corporation election may reduce the owner’s QBI deduction, partially offsetting the employment-tax savings.

The calculation becomes more complex when the business is a specified service trade or business, the owner’s taxable income falls within or above the applicable Section 199A phaseout range, or the wage and property limitations apply.

Accordingly, the potential benefit should be measured by comparing the owner’s total federal income and employment taxes under both alternatives.

3.0 Federal Compliance Requirements for an S Corporation

An S corporation generally adds the following obligations.

3.1 Separate S-Corporation Tax Return

The company must file Form 1120-S annually even though its income generally passes through to its shareholders. Each shareholder receives a Schedule K-1 reporting the shareholder’s allocable share of corporate income, deductions and credits. The relevant amounts are reported on the shareholder’s individual income-tax return.

3.2 Owner Payroll

A shareholder who performs more than minor services generally must be treated as an employee and receive reasonable W-2 compensation.

This normally requires:

Regular payroll processing
Federal and state income-tax withholding
Social Security and Medicare withholding
Employer payroll-tax deposits
Quarterly Form 941 filings
Annual Form 940
Forms W-2 and W-3
New York withholding and unemployment filings
Payroll reconciliations

Reasonable compensation is a significant IRS compliance area for S corporations.

3.3 Shareholder Basis

The shareholder must track stock and debt basis. Basis affects:

Whether allocated losses are currently deductible
Whether distributions are tax-free
The tax treatment of loan repayments
Gain or loss when the owner disposes of the shares

Distributions exceeding available stock basis may produce taxable capital gain.

3.4 Separate Books and Bank Accounts

Corporate income, expenses, payroll, shareholder loans, distributions, capital contributions and reimbursements should be properly recorded.

Paying personal expenses directly from the company’s account without appropriate classification can create payroll, distribution, basis and documentation problems.

3.5 Accountable Reimbursement Plan

An S corporation should consider adopting an accountable plan for legitimate business expenses paid personally by the shareholder, including:

Business mileage
Qualifying home-office expenses
Business cellphone and internet costs
Professional dues
Business travel
Supplies

A shareholder-employee generally cannot report the corporation’s expenses on the shareholder’s Schedule C. Proper reimbursement by the corporation is therefore important.

3.6 Shareholder Health Insurance

Health-insurance premiums paid for a shareholder owning more than 2% of the corporation require special payroll and income-tax reporting. Incorrect treatment can jeopardize the shareholder’s above-the-line health-insurance deduction.

3.7 Retirement Plans

Retirement-plan contributions for an S-corporation shareholder are generally based on eligible W-2 compensation, not shareholder distributions.

Setting owner compensation too low may therefore reduce the amount the shareholder can contribute to a retirement plan. See the IRS guidance on retirement contributions for S-corporation shareholders.

4.0 New York State Tax Considerations

A federal S-Corp election does not automatically create a New York S corporation. A qualifying federal S corporation generally must file Form CT-6, and all shareholders must consent.

For a calendar-year corporation, the election is generally due by March 15 of the year for which it is intended to apply. See the New York Form CT-6 instructions.

Once approved, the company generally files:

Federal Form 1120-S
New York Form CT-3-S
Form CT-34-SH shareholder information with the applicable New York filing

4.1 Fixed-Dollar Minimum Tax

A New York S corporation generally pays a fixed-dollar minimum franchise tax based on its New York receipts. The applicable amount should be confirmed annually using the current Form CT-3-S instructions.

This tax applies even though the corporation’s income generally passes through to its shareholders.

4.2 LLC Filing Fee

A New York single-member LLC treated as a disregarded entity generally pays a $25 annual filing fee using Form IT-204-LL.

Multimember LLCs taxed as partnerships are generally subject to a filing fee based on New York-source gross income. The fee ranges from $25 to $4,500 under the current schedule. See the New York LLC filing-fee guidance.

An LLC that elects corporate tax treatment generally leaves the disregarded-entity or partnership filing-fee regime but becomes subject to the applicable corporate-return and franchise-tax requirements.

4.3 NYS Pass-Through Entity Tax

Eligible New York S corporations may make an annual State Pass-Through Entity Tax (PTET) election.

PTET may allow the entity to deduct the tax for federal income-tax purposes while the eligible shareholder receives a corresponding refundable New York State personal income-tax credit. If the credit exceeds the shareholder’s New York tax due, the excess is generally refunded without interest.

The election and estimated-payment deadlines are strict. PTET is not automatically beneficial in every situation, particularly when ownership, residency, losses, credits, or cash-flow considerations complicate the calculation.

4.4 New York Employer Compliance: Business With No Other Employees

Once an S-corporation owner becomes a shareholder-employee, the company may need to address employer obligations even when it has no unrelated employees.

Depending on the facts and available shareholder exemptions, these obligations can include:

Registering as a New York employer
New York wage withholding
Federal and state unemployment filings
Workers’ compensation coverage or an eligible officer exclusion
Disability Benefits Law coverage
Paid Family Leave coverage or an applicable shareholder waiver
Payroll notices and wage statements
Timely payroll-tax deposits
Quarterly payroll returns
Annual W-2 reporting

A sole shareholder should not assume that being the company’s only employee automatically eliminates every insurance or payroll requirement. Any available exclusion for a one- or two-person corporation should be reviewed, elected, and documented properly.

4.5 New York Employer Compliance: Business With Employees

A New York business with employees generally has broader obligations regardless of whether it is taxed as a sole proprietorship, partnership, or S corporation.

These commonly include:

Federal Form I-9 employment verification
Federal and New York payroll-tax withholding
New-hire reporting
Federal and New York unemployment insurance
Workers’ compensation insurance
New York disability benefits insurance
New York Paid Family Leave coverage
Wage notices and compliant pay statements
Applicable minimum wage and overtime requirements
Required workplace postings
Sick-leave compliance
Employee-versus-independent-contractor classification
Retirement plan mandates, when applicable
Periodic payroll and insurance audits

Virtually all New York employers must maintain disability and Paid Family Leave coverage for covered employees. See the New York Workers’ Compensation Board guidance.

An S-corporation election does not eliminate these employer obligations. It adds the shareholder-employee to the company’s payroll and compensation analysis. If the business already has employees, it may already maintain payroll software, employer registrations, workers’ compensation coverage, and payroll-compliance procedures. Adding the shareholder-owner to an existing payroll system may therefore cost less than establishing payroll solely for the owner. However, the presence of employees does not directly increase the owner’s S-corporation employment-tax savings because employee wages and related employer taxes generally apply under either tax treatment.

5.0 Special Considerations for New York City Businesses

New York City can materially change the S-corporation analysis.

5.1 General Corporation Tax

New York City does not recognize the federal S-corporation election in the same manner as New York State. A federal S corporation doing business in the city generally remains subject to the New York City General Corporation Tax.

The corporation may be required to calculate tax under multiple bases, including a tax measured by entire net income at 8.85%, an alternative tax base and an applicable minimum tax. Owner-officer compensation may also affect the calculation.

As a result, an S corporation may incur entity-level GCT while its shareholder also pays New York City personal income tax on pass-through income.

5.2 Unincorporated Business Tax

A sole proprietorship or unincorporated LLC carrying on a business in New York City may be subject to the Unincorporated Business Tax, generally imposed at 4% of taxable business income allocated to the city.

An exemption and business tax credit may reduce or eliminate the liability. If tax before the business tax credit is $3,400 or less, the credit generally eliminates the tax. A partial credit applies when tax before the credit is more than $3,400 but less than $5,400. No business tax credit is available when tax before the credit is $5,400 or more. Eligible New York City residents may also qualify for a partial personal income-tax credit based on UBT paid. See New York Unincorporated Business Tax Guide for further details.

5.3 NYC Pass-Through Entity Tax (PTET)

An eligible New York City resident S-corporation shareholder may benefit from an annual NYC PTET election. The entity-level payment may generate a federal deduction, while the eligible shareholder receives a corresponding refundable New York City personal income-tax credit. The NYC PTET credit is refundable for eligible claimants. See New York City PTET credit guidance for additional information.

NYC PTET does not eliminate the corporation’s separate General Corporation Tax obligation.

5.4 Effect on the S-Corporation Decision

An S corporation that produces federal employment-tax savings may produce a smaller overall benefit after New York City taxes. For some businesses, GCT can materially reduce or eliminate the federal savings.

The final result depends on:

The applicable GCT tax base
UBT liability and credits
Owner compensation
NYC PTET
Business-income allocation
The shareholder’s residency
Other income and deductions

A separate New York City calculation should therefore be completed before making the S-corporation election.

6.0 Disadvantages of Electing S-Corporation Treatment

Before electing S-Corp status, small-business owners must weigh the projected employment-tax savings against these key disadvantages:

6.1 Reasonable-Compensation Exposure

The owner cannot arbitrarily select a low salary to avoid taxes. Relevant factors include:

Training and experience
Duties and responsibilities
Time devoted to the business
Compensation paid to comparable workers
The company’s revenue and profitability
Whether employees produce part of the company’s income
The owner’s administrative versus revenue-producing work
The use of equipment, capital, intellectual property, and other income-producing assets

A service business whose revenue depends almost entirely on the owner’s labor often requires a higher salary than a business in which employees, equipment, or proprietary assets generate a significant portion of income. If the business depends primarily on the owner’s personal labor, the defensible W-2 wage should reflect comparable market compensation, reducing the potential tax savings.

6.2 Higher Recurring Costs

An S corporation generally requires a separate tax return, payroll processing, additional bookkeeping, corporate-level state filings, shareholder-basis schedules, payroll insurance and employer registrations, and additional professional oversight.

6.3 Additional Filing Deadlines and Late-Filing Penalties

Late filings of Form 1120-S and companion Schedules K-1 trigger automatic IRS penalties assessed per shareholder, per month. These accumulate rapidly even if the business owes zero federal tax. Payroll-deposit penalties can also become significant because employer trust-fund taxes are subject to strict deposit requirements.

6.4 Limited Flexibility in Allocating Economic Items

An S corporation generally may have only one class of stock, although differences in voting rights are permitted. Income and losses generally must be allocated to shareholders based on their ownership interests on a per-share, per-day basis. Disproportionate distributions can create tax and one-class-of-stock concerns and should be reviewed carefully.

6.5 Ownership Restrictions

An S corporation is generally limited to 100 eligible shareholders. Partnerships, corporations, and nonresident aliens generally cannot be shareholders, subject to limited exceptions for qualifying trusts and estates.

6.6 Reduced Retirement-Plan Contribution Base

For an S-corporation shareholder, employee deferrals and employer contributions to a solo 401(k), as well as SEP IRA contributions, are generally determined using eligible W-2 compensation, subject to the applicable plan and annual limits. S-corporation distributions do not constitute earned income for this purpose. Setting compensation too low may therefore restrict the shareholder’s tax-advantaged retirement contributions.

6.7 Potentially Smaller QBI Deduction

Owner wages are not qualified business income. Increasing salary reduces the pass-through income potentially eligible for the Section 199A deduction.

6.8 Greater Cash-Flow Discipline

The owner must distinguish among:

Payroll
Shareholder distributions
Loan repayments
Expense reimbursements
Capital contributions

Taking irregular draws without maintaining sufficient payroll can create tax and compliance exposure.

6.9 New York City Business Taxes

For businesses operating in New York City, the General Corporation Tax can reduce or eliminate part of the federal employment-tax benefit.

6.10 Difficulty Reversing the Election

Terminating S status or converting to another tax classification may cause unexpected consequences involving asset basis, accumulated adjustments, distributions and the timing of future elections.

7.0 When an S-corporation election is more or less likely to be beneficial

7.1 When an S Corporation Is More Likely to Be Beneficial

An S-corporation election is more likely to be beneficial when:

Annual profit before owner compensation is consistently and meaningfully higher than reasonable compensation for the owner’s services.
Profits are expected to remain stable.
The company can support a defensible salary.
Meaningful profit will remain after salary and employer payroll taxes.
The owner is willing to process regular payroll.
The business maintains accurate books and records.
Expected savings comfortably exceed recurring compliance costs.
The ownership structure satisfies the S-corporation requirements.
Applicable New York and New York City entity-level taxes have been considered in calculating the projected after-tax benefit.

7.2 When an S Corporation Is Less Likely to Be Beneficial

The election is less likely to be appropriate when:

Profit before owner compensation is below approximately $100,000 for a full-time owner-operated professional service business.
Profit fluctuates substantially.
Nearly all profit would be required as reasonable compensation.
The owner has not established reliable bookkeeping.
The owner needs maximum flexibility in allocating income among multiple owners.
An ineligible shareholder may be admitted.
The business expects losses.
The owner intends to take large distributions while maintaining minimal payroll.
The projected net savings are only a few hundred or a few thousand dollars.
New York City business taxes offset the federal savings.
The owner does not want the additional payroll and corporate-compliance obligations.

8.0 Practical Decision Framework

Before making an S-corporation election, a New York business owner should consider:

What is the company’s expected profit before owner compensation?
Is the profit recurring or temporary?
What would a comparable business pay someone to perform the owner’s duties?
How much profit will remain after reasonable compensation and employer payroll taxes?
Does the business already maintain payroll for employees?
What will payroll, bookkeeping, tax preparation, insurance, and legal compliance cost?
How will the salary affect the owner’s QBI deduction?
Does the owner have other wages that already use part or all of the Social Security wage base?
Will the company operate in New York City?
Would New York PTET or NYC PTET be beneficial?
Does the owner want to maximize retirement-plan contributions?
Are all current and anticipated owners eligible S-corporation shareholders?

The election should generally be made only after preparing a side-by-side projection that includes federal income tax, employment taxes, New York taxes, New York City taxes when applicable, and administrative costs.

9.0 Conclusion

An S-corporation election is not automatically better than a single-member LLC’s default tax treatment. The election is most likely to help when sustainable profit is consistently and meaningfully higher than defensible compensation for the owner’s services, and when the resulting employment-tax benefit comfortably exceeds payroll, tax-preparation, bookkeeping, insurance and entity-level tax costs.

New York business owners should evaluate federal tax, New York State obligations, and when applicable, New York City UBT, GCT and PTET before filing an election.

Find Out Whether an S-Corporation Election is Right for Your Business

An S-corporation election should be evaluated based on sustainable profit, reasonable compensation, potential QBI deduction, payroll costs, ongoing compliance costs, and applicable New York State and New York City tax obligations.

Baccus Consulting helps business owners evaluate entity-tax elections and develop tax planning strategies aligned with their current circumstances and stage of growth.

If you are considering an S-corporation election, get in touch to schedule a consultation.

Learn more about our Tax Planning & Compliance Services and Financial Advisory Services.

S-Corp vs. LLC: 2026 Tax Comparison for New York Small-Business Owners

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