Difference Between

Difference Between C Corporation and S Corporation

Nex Virox Team
Written byNex Virox Team
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Varshal Nirbhavane
Senior SEO & Organic Growth Professional · 5+ years
20 min read
Quick answer

The main difference between C Corporation and S Corporation is that C Corporations are taxed separately from their owners, while S Corporations pass income directly to shareholders. C Corporation is a default business structure subject to double taxation, while S Corporation is a pass-through entity with limited ownership and single taxation.

Key takeaways

  • Core distinction: C corporations pay corporate income tax, while S corporations pass profits directly to owners.
  • How each works: S corporations file Form 2553 to elect pass-through status, whereas C corporations default to standard taxation.
  • Ownership limits: S corporations cap at 100 shareholders, all US citizens, but C corporations allow unlimited shareholders globally.
  • Best-fit case: Choose an S corporation for small businesses seeking payroll tax savings, and C for venture funding.
  • Common mistake: Owners often miss the S corporation election deadline, accidentally remaining taxed as a C corporation.

Difference Between C Corporation and S Corporation: Comparison Table

AspectC CorporationS Corporation
DefinitionA separate legal entity taxed independently from its owners under Subchapter C.A pass-through entity electing Subchapter S status to avoid entity-level federal tax.
PurposeDesigned for large-scale operations seeking venture capital and unlimited growth potential.Created for small businesses wanting liability protection with single-layer taxation.
Core MechanismCorporate profits face entity tax, then shareholders pay tax again on dividends received.Income, losses, deductions flow through to owners' personal returns via Schedule K-1.
TaxationSubject to double taxation at corporate and individual shareholder levels on distributed profits.Single-level taxation occurs only at the shareholder level; no federal entity tax applies.
Ownership LimitUnlimited number of shareholders may own stock in the corporation.Maximum of 100 shareholders allowed, each meeting strict eligibility requirements.
Shareholder TypeOpen to individuals, partnerships, corporations, trusts, and non-resident aliens without restriction.Restricted to US citizens, resident aliens, and certain trusts; no entities or non-residents.
Stock ClassesMay issue multiple classes with differing voting and dividend rights.Permitted only one class of stock, though voting differences are allowed.
Formation CostState filing fees typically range from $100 to $800 depending on jurisdiction.Same initial filing fees apply, plus Form 2553 election costs no additional federal fee.
Formation SpeedArticles of incorporation processing takes roughly 1 to 4 weeks in most states.Standard incorporation plus IRS election processing adds several weeks to timeline.
Election DeadlineNo election required; corporate status begins automatically upon state filing approval.Form 2553 must file within 2 months and 15 days of tax year start.
Tax RateFederal corporate rate is a flat 21% on all taxable income.Shareholder rates range from 10% to 37% based on individual brackets.
Self-Employment TaxShareholder-employees pay FICA on salaries but not on dividend distributions.Reasonable salary subject to FICA; remaining distributions avoid self-employment tax.
Fiscal YearMay adopt any fiscal year end, including calendar or natural business year.Generally must use calendar year unless business purpose justifies another period.
Accounting MethodAccrual accounting is mandatory once gross receipts exceed $30 million average.Cash method available for most S corporations under $30 million gross receipts.
Profit DistributionDividends paid proportionally to share ownership; no flexibility in allocation.Distributions must follow ownership percentage; special allocations are prohibited.
Loss DeductionCorporate losses remain inside the entity and cannot offset shareholder personal income.Losses pass through to shareholders, limited by basis, at-risk, and passive rules.
Fringe BenefitsHealth insurance, retirement plans, and other perks are fully deductible corporate expenses.More than 2% shareholders face limited deductions on certain employee benefits.
Audit RiskIRS audits corporate returns separately with lower individual examination rates historically.Higher audit scrutiny occurs because pass-through losses often trigger IRS review.
Compliance BurdenRequires annual meetings, board resolutions, and formal corporate record keeping.Same formalities apply plus ongoing shareholder eligibility monitoring.
Administrative CostAnnual franchise taxes and legal fees typically run $800 to $2,000 yearly.Similar state fees apply, but tax preparation costs may rise due to K-1 filings.
ScalabilityUnlimited shareholders and multiple classes enable massive capital raises from investors.100-shareholder cap and single-class stock restrict growth funding options.
Investor AppealVenture capital and institutional investors strongly prefer C corporation structures.Most venture funds cannot invest due to ownership restrictions and tax complexities.
IPO ReadinessFully equipped for public offerings with unlimited shareholders and flexible equity structures.Cannot go public because the 100-shareholder limit blocks exchange listing requirements.
Perpetual ExistenceContinues indefinitely regardless of ownership changes, mergers, or shareholder departures.Election terminates automatically if shareholder count exceeds limits or ineligible owners appear.
TransferabilityShares transfer freely without restriction, enabling easy ownership changes.Transfers restricted to eligible shareholders; improper transfers can void election.
State RecognitionRecognized and taxed as C corporation in all 50 states uniformly.Some states impose entity-level taxes or do not recognize S status at all.
Typical UsersTech startups, public companies, and enterprises seeking venture funding or IPO.Family businesses, professional practices, and local service companies under 100 owners.
Common ExampleGoogle, Apple, and most Fortune 500 publicly traded corporations use this structure.Local dental practices, real estate firms, and consulting agencies commonly elect S status.
Main LimitationDouble taxation on dividends creates significant tax inefficiency for profitable distributions.Restrictive eligibility rules and 100-owner cap prevent substantial external investment.
Best-Fit ScenarioChoose when raising venture capital, planning IPO, or expecting sustained high growth.Choose for stable small business with few owners seeking payroll tax savings.

What Is C Corporation?

C Corporation is a legal business structure taxed separately from its owners. It exists to shield shareholders from personal liability while allowing unlimited growth through stock sales and reinvested profits.

Definition of C Corporation

A C Corporation is a business entity incorporated under state law that files its own federal tax return using Form 1120, paying corporate income tax on profits before any dividends are distributed to shareholders.

Key Characteristics of C Corporation

CharacteristicWhat It Means in Practice
Separate legal entityThe corporation owns assets and signs contracts in its own name, not the owners' names.
Unlimited shareholdersNo cap on investor count, allowing public stock exchange listings and massive capital raises.
Double taxationProfits taxed at corporate rate, then dividends taxed again on shareholders' personal returns.
Perpetual existenceThe company continues operating even if founders die, retire, or sell their shares.
Limited liabilityShareholders lose only their investment, never personal assets, in lawsuits or debts.
Formal governanceRequires a board of directors, annual meetings, and written corporate minutes for decisions.
Stock classesCan issue multiple classes of stock with different voting rights and dividend preferences.
Fiscal year choiceMay select any 12-month tax year, not forced to use the calendar year like S Corporations.
Benefit deductionsCan deduct health insurance, retirement plans, and other benefits for employees and owners.
Public offeringEligible for initial public offerings, enabling shares to trade freely on exchanges like NYSE.

Common Examples of C Corporation

  • Apple Inc. – a publicly traded technology giant that uses C Corp status to issue multiple stock classes.
  • Microsoft Corporation – a multinational software firm that raises capital through public share sales.
  • Walmart Inc. – a retail chain whose C Corp structure supports nationwide expansion and employee stock plans.
  • Ford Motor Company – an automaker that retains earnings for factory investment while paying corporate taxes.
  • JPMorgan Chase – a bank that must use C Corp form to meet federal banking regulations.
  • Pfizer Inc. – a pharmaceutical company that funds research through retained corporate earnings.
  • Coca-Cola Company – a beverage producer with perpetual existence spanning over a century of operations.
  • Amazon.com Inc. – an e-commerce leader that reinvests profits into logistics without S Corp distribution limits.
  • Boeing Company – an aerospace manufacturer whose C Corp status allows complex joint ventures and contracts.
  • Netflix Inc. – a streaming service that issues preferred stock to institutional investors, which S Corps cannot do.

Advantages and Limitations of C Corporation

AdvantagesLimitations
Raises capital by selling unlimited shares to any investor worldwide.Pays corporate income tax first, then shareholders pay tax again on dividends received.
Attracts venture capital and private equity firms that only invest in C Corps.Faces complex compliance with state filings, board resolutions, and annual report fees.
Offers full deduction for health insurance premiums paid on behalf of employee-owners.Cannot deduct dividend payments as a business expense, unlike interest on debt.
Provides perpetual existence that survives ownership changes or founder departure.Incurs higher accounting and legal fees due to separate tax return and corporate records.
Allows unlimited number of shareholders, including foreigners and other corporations.Suffers potential double taxation on liquidation when assets are sold and proceeds distributed.
Permits flexible profit retention to fund growth without forcing distributions to owners.Requires formal board meetings and minutes, which small owners often find burdensome.
Enables employee stock options that attract top talent without immediate cash outlay.Faces stricter IRS scrutiny on unreasonable compensation and excessive accumulated earnings.
Separates business debts from personal assets, protecting owner homes and savings.Charges state franchise taxes based on net worth or shares, even in unprofitable years.
Supports multiple classes of stock to separate voting control from economic ownership.Restricts net operating loss carryforwards to 80% of taxable income in future years.
Builds credibility with banks, suppliers, and large customers that prefer corporate structures.Exposes profits to double tax when cash is extracted as dividends rather than salary.

What Is S Corporation?

S Corporation is a special tax election status for a corporation that passes income, losses, deductions, and credits directly to shareholders. It avoids double taxation on profits. This structure exists to help small businesses avoid corporate-level taxes.

Definition of S Corporation

S Corporation is a closely held business entity that elects to be taxed under Subchapter S of the Internal Revenue Code. Profits and losses flow through to shareholders' personal tax returns. The corporation itself generally pays no federal income tax on its earnings.

Key Characteristics of S Corporation

CharacteristicWhat It Means in Practice
Pass-through taxationProfits are reported on owners' personal returns, avoiding corporate income tax.
Shareholder limitOnly 100 shareholders are allowed, restricting growth and outside investment.
Ownership restrictionShareholders must be US citizens or resident aliens, limiting foreign capital.
Single stock classOnly one class of stock is permitted, preventing complex equity structures.
Form 1120-SAnnual informational return must be filed, though no corporate tax is paid.
Calendar yearMost S corporations must use a calendar year for tax reporting purposes.
Reasonable salaryOwner-employees must pay themselves fair wages subject to payroll taxes.
Loss deductionShareholders can deduct business losses on personal returns, subject to basis limits.
Asset protectionOwners enjoy limited liability, protecting personal assets from business debts.
Election requirementForm 2553 must be filed timely with all shareholders consenting.

Common Examples of S Corporation

  • Chick-fil-A – a fast-food chain operating as an S corporation, keeping ownership within the Cathy family.
  • Publix Super Markets – employee-owned grocery chain that uses S corporation status for tax efficiency.
  • New York Times – historically operated as an S corporation under the Ochs-Sulzberger family control.
  • Hobby Lobby – craft retailer structured as an S corporation for family ownership and tax purposes.
  • SC Johnson – family-owned consumer goods company that benefits from pass-through taxation.
  • Behr Paint – paint manufacturer owned by the Behr family through an S corporation structure.
  • Fidelity Investments – mutual fund giant run as an S corporation under the Johnson family.
  • Mary Kay – cosmetics company operating as an S corporation under the Rogers family ownership.
  • Hearst Corporation – media conglomerate structured as an S corporation for family shareholders.
  • Levi Strauss & Co. – jean manufacturer that operated as an S corporation under the Haas family.

Advantages and Limitations of S Corporation

AdvantagesLimitations
Single layer of tax on business profits, saving significant money.Strict 100-shareholder cap blocks large-scale equity fundraising.
Owners can deduct business losses against other personal income.Non-US residents cannot own shares, limiting global investors.
No self-employment tax on distributed profits, only on salary.Unreasonable low salaries trigger IRS audits and penalties.
Limited liability protects personal assets from corporate lawsuits.Only one stock class prevents preferred stock or investor tiers.
Business value increases without immediate tax on appreciation.Converting from C corporation triggers built-in gains tax.
Shareholders receive tax-free fringe benefits in some cases.Retirement plan contributions are limited for owner-employees.
Easy transfer of ownership through stock sales, no approval needed.State-level taxes may still apply, reducing federal savings.
Credibility with banks and vendors is higher than sole proprietorships.Annual filing fees and administrative costs still apply.
Profits avoid double taxation compared to standard corporations.Shareholder basis tracking is complex and error-prone.
Flexible profit allocation based on ownership percentage.Passive income over 25% of gross receipts triggers corporate tax.

Similarities Between C Corporation and S Corporation

Shared AspectHow C Corporation and S Corporation Are Alike
Legal FormationC Corporation and S Corporation both require filing Articles of Incorporation with the state to legally exist.
Business PurposeC Corporation and S Corporation both operate as distinct legal entities formed to conduct business and generate profit.
Entity CategoryC Corporation and S Corporation are both classified as corporations, not partnerships or sole proprietorships.
Ownership StructureC Corporation and S Corporation both issue shares of stock to owners who hold equity in the company.
Shareholder RightsC Corporation and S Corporation both grant shareholders voting rights on major corporate decisions and board elections.
Board DirectorsC Corporation and S Corporation both require a board of directors to oversee major policies and strategic direction.
Officer RolesC Corporation and S Corporation both require corporate officers like a president and treasurer to manage daily operations.
Legal LiabilityC Corporation and S Corporation both provide limited liability, protecting personal assets of owners from business debts.
Perpetual ExistenceC Corporation and S Corporation both continue to exist legally even if an owner leaves, dies, or sells shares.
State FilingsC Corporation and S Corporation both must file annual reports and pay state franchise taxes to remain compliant.
Registered AgentC Corporation and S Corporation both must maintain a registered agent with a physical address in the state.
Corporate BylawsC Corporation and S Corporation both adopt corporate bylaws that define internal governance rules and procedures.
Formal MeetingsC Corporation and S Corporation both hold regular shareholder and director meetings with documented minutes kept on file.
Separate IdentityC Corporation and S Corporation both are separate legal persons from their owners for contracts, lawsuits, and taxes.
Stock TransferC Corporation and S Corporation both allow ownership transfer through the sale or gift of stock shares.
Capital RaisingC Corporation and S Corporation both raise capital by selling equity shares to investors rather than taking loans only.
Tax FilingsC Corporation and S Corporation both file annual federal tax returns with the IRS using Form 1120 series.
Deductible ExpensesC Corporation and S Corporation both deduct ordinary business expenses like salaries, rent, and supplies from taxable income.
Employee WagesC Corporation and S Corporation both pay employee salaries that are deductible business expenses for the company.
Fringe BenefitsC Corporation and S Corporation both offer employee benefits like health insurance and retirement plans to attract talent.
Accounting MethodC Corporation and S Corporation both use accrual or cash accounting methods to track income and expenses consistently.
Fiscal YearC Corporation and S Corporation both adopt a fiscal year for tax reporting, typically the calendar year ending December 31.
Audit ExposureC Corporation and S Corporation both face potential IRS audits and must maintain accurate financial records for review.
Compliance CostsC Corporation and S Corporation both incur legal and accounting fees for formation, filings, and ongoing compliance work.
Filing DeadlinesC Corporation and S Corporation both face strict tax filing deadlines and penalties for late submissions to the IRS.
State RegistrationC Corporation and S Corporation both register with the state and pay initial filing fees to incorporate legally.
Foreign QualificationC Corporation and S Corporation both must qualify as foreign corporations to do business in other states.
Liquidation ProcessC Corporation and S Corporation both follow a formal dissolution process to pay debts and distribute remaining assets.
Exit StrategyC Corporation and S Corporation both offer a sale of the business through stock sale or asset sale for owners exiting.
Credibility SignalC Corporation and S Corporation both signal formal business legitimacy to customers, vendors, and potential partners.

C Corporation or S Corporation: Which Should You Choose?

The single variable that decides it for most founders is your exit plan and investor strategy. If you will raise venture capital or sell the company publicly, choose C Corporation. If you want pass-through taxation with limited liability and no outside investors, choose S Corporation.

When to Use C Corporation

Choose C Corporation when you plan to raise institutional funding, issue multiple classes of stock, or pursue an IPO. C Corporations also fit companies with international operations, employee stock option plans, or a long-term plan to reinvest all profits back into rapid growth without distributing dividends.

When to Use S Corporation

Choose S Corporation when you are a US citizen or resident with 100 or fewer shareholders who want to avoid double taxation. S Corporations suit profitable small businesses that pay owners a reasonable salary, allowing remaining profits to pass through tax-free at the personal level without corporate income tax.

Common Misconceptions About C Corporation and S Corporation

Common MythThe Reality
A C Corporation and an S Corporation are two completely different types of business entities.Both a C Corporation and an S Corporation are the same legal entity type, a corporation, but they differ only in how they are taxed.
An S Corporation is a separate legal structure you file for when starting a business.An S Corporation is an IRS tax election, filed with Form 2553, that a C Corporation makes to change its federal tax treatment.
You can form an S Corporation directly with your state's Secretary of State office.You form a corporation with your state, and that corporation is automatically a C Corporation until you separately file the S Corporation election with the IRS.
An S Corporation does not pay any taxes at all, ever, on any income.An S Corporation pays no federal income tax, but it may still pay state taxes, payroll taxes, and taxes on passive income.
A C Corporation pays taxes, but an S Corporation is completely tax-free for owners.An S Corporation is not tax-free; profits pass through to owners who pay personal income tax on their share of the earnings.
Choosing an S Corporation means you will never face double taxation on any income.An S Corporation avoids federal double taxation, but it can still face double taxation on built-in gains and passive income at the corporate level.
Only small businesses can elect to become an S Corporation in the United States.An S Corporation must have 100 or fewer shareholders, but a small C Corporation with similar size can also exist and is not limited by that rule.
A C Corporation can have unlimited shareholders, but an S Corporation is capped at exactly 100 owners.An S Corporation is limited to 100 shareholders, but a family counts as one shareholder, so the actual number of individual owners can exceed 100.
Shareholders of an S Corporation must be United States citizens or permanent residents.An S Corporation shareholder must be a US citizen or resident alien, but non-resident aliens cannot own shares in an S Corporation.
An S Corporation cannot have another business entity as one of its shareholders.An S Corporation can be owned by certain trusts, estates, and single-member LLCs, but it cannot be owned by a partnership or another C Corporation.
A C Corporation must have at least two shareholders to be legally valid in any state.A C Corporation can have just one shareholder in all states, and that sole owner can also serve as the only director and officer.
An S Corporation cannot issue more than one class of stock to its investors.An S Corporation can issue only one class of stock, but that class can have differences in voting rights without breaking the rule.
A C Corporation can issue multiple classes of stock, but an S Corporation can issue only common shares.An S Corporation can issue common stock with voting and non-voting shares, but it cannot issue preferred stock like a C Corporation can.
An S Corporation is always better for taxes than a C Corporation for every business owner.An S Corporation is often better for small profits, but a C Corporation can be better when owners want to reinvest profits at lower corporate tax rates.
A C Corporation pays a flat 21% tax rate on all of its profits every single year.A C Corporation pays a 21% federal rate on taxable income, but state taxes and the 20% qualified dividend tax on distributions increase the total burden.
An S Corporation owner pays self-employment tax on 100% of the business's net profit.An S Corporation owner pays payroll taxes only on a reasonable salary, and the remaining profit distributions are not subject to self-employment tax.
An S Corporation owner can avoid all payroll taxes by taking no salary and only taking distributions.The IRS requires an S Corporation owner to take a reasonable salary, and failing to do so can trigger penalties, back taxes, and audits.
A C Corporation cannot deduct the cost of health insurance premiums for its employee-owners.A C Corporation can deduct health insurance premiums as a business expense, and the value is taxable income to the employee-owner.
An S Corporation owner can deduct health insurance premiums fully without any tax consequences.An S Corporation owner who owns more than 2% of the company must include health insurance premiums as wages, but then can deduct them personally.
Converting from a C Corporation to an S Corporation requires dissolving the business and starting over.Converting from a C Corporation to an S Corporation is just a tax election with Form 2553, and the legal corporation continues without interruption.
An S Corporation cannot convert back to a C Corporation once the election is made.An S Corporation can revoke its election voluntarily, and it automatically reverts to a C Corporation if it violates eligibility rules.
An S Corporation must use a calendar year for its fiscal year, but a C Corporation can choose any year.An S Corporation generally must use a calendar year, but it can request a fiscal year if it has a legitimate business purpose.
A C Corporation is always subject to double taxation on every dollar of profit it earns.A C Corporation avoids double taxation on profits paid out as reasonable salaries, and only dividends and retained earnings face the double tax.
An S Corporation never pays any corporate-level tax on any type of income it generates.An S Corporation pays a corporate-level tax on excess passive income and on built-in gains recognized within five years of conversion.
An S Corporation is easier to raise venture capital funding with than a C Corporation.Most venture capital firms require a C Corporation structure because an S Corporation has limits on shareholders and stock classes that block typical VC deals.
A C Corporation cannot have an S Corporation as a shareholder in its ownership structure.A C Corporation can be owned by an S Corporation, but an S Corporation cannot be owned by a C Corporation, which limits certain holding company structures.
An S Corporation is the same thing as an LLC, and the two terms are interchangeable.An S Corporation is a tax election on a corporation, while an LLC is a separate state entity that can also elect S Corporation tax status.
An S Corporation provides stronger liability protection than a C Corporation for its owners.Both an S Corporation and a C Corporation provide identical limited liability protection, and the tax election does not affect legal liability.
A C Corporation cannot have a single owner, because it requires a board of directors and officers.A C Corporation with one owner can have that person serve as the sole director, president, secretary, and treasurer in most states.
An S Corporation must distribute all of its profits to shareholders in cash each year.An S Corporation allocates profits to shareholders based on ownership percentage, but actual cash distributions can differ and are not mandatory annually.

Conclusion

Difference Between C Corporation and S Corporation comes down to taxation and ownership. C Corps face double taxation but allow unlimited shareholders and diverse stock classes. S Corps offer pass-through taxation with strict limits of 100 shareholders and one stock class. Choose C for investors; choose S for simple, owner-operated businesses.

FAQs on Difference Between C Corporation and S Corporation

What is the main difference between a C Corporation and an S Corporation?
The main difference is taxation, because a C Corporation pays corporate income tax while an S Corporation passes profits and losses directly to shareholders' personal tax returns.
Which is better for a small business, a C Corporation or an S Corporation?
An S Corporation is usually better for a small business because it avoids double taxation, but a C Corporation becomes better if you plan to seek venture capital or issue multiple classes of stock.
How much does it cost to form a C Corporation versus an S Corporation?
Formation costs are identical because an S Corporation is simply a tax election applied to a standard corporation, so you pay the same state filing fees for both entities.
Is an S Corporation safer than a C Corporation for liability protection?
No, both structures offer the same limited liability protection, because the corporate veil shields personal assets from business debts equally regardless of which tax status you choose.
Can a C Corporation own shares of an S Corporation?
No, a C Corporation cannot own shares of an S Corporation, because the IRS restricts S Corporation shareholders to individuals, certain trusts, and estates, not other corporations.
What is the most common mistake beginners make when choosing between C and S Corporations?
The most common mistake is assuming the S Corporation status changes liability protection, when it actually only changes taxation and still requires proper corporate formalities to protect personal assets.
Are C Corporation and S Corporation interchangeable terms for the same business entity?
No, they are not interchangeable, because a C Corporation is a default legal entity type while an S Corporation is a tax election that the same legal entity must file with the IRS to obtain.
When should a real-world business choose a C Corporation over an S Corporation?
A real-world business should choose a C Corporation when it plans to raise money from venture capitalists or go public, because those investors require the unlimited shareholder and multiple stock class options that S Corporations cannot offer.
Can I switch my business from a C Corporation to an S Corporation later?
Yes, you can switch from a C Corporation to an S Corporation by filing Form 2553 with the IRS, but you must meet eligibility rules and make the election within a specific time window.
Do C Corporations and S Corporations pay the same tax rates on their profits?
No, they do not pay the same rates, because a C Corporation pays a flat corporate tax on profits while an S Corporation pays no corporate tax and instead distributes taxable income to shareholders at their personal rates.