2.2 C corporations and S corporations

C and S corporations are crucial business entities with distinct tax treatments. C corps face double taxation on profits, while S corps offer pass-through taxation. Understanding these differences is key for strategic business planning and tax management.

This topic explores the tax implications of C and S corps, including entity classification, shareholder taxation, and eligibility requirements. It highlights how business structure choices can significantly impact overall tax burden and financial flexibility.

C vs S Corporations: Tax Treatment

Entity Classification and Taxation Basics

• C corporations and S corporations represent distinct business entities with different tax treatments under U.S. tax law
• C corporations pay corporate income tax on earnings while S corporations generally avoid federal income tax at the corporate level
• C corporations can retain earnings for business growth (reinvestment, expansion) while S corporations must distribute profits to shareholders annually
• C corporations offer flexibility with no restrictions on shareholder number or type while S corporations face limitations (100 shareholders maximum, U.S. citizens/residents only)
• C corporations allow multiple classes of stock (common, preferred) while S corporations are limited to one class

Shareholder Taxation and Distributions

• C corporation shareholders pay taxes on dividends received as personal income
• S corporation shareholders are taxed on their proportionate share of company income, regardless of actual distribution
• S corporation pass-through taxation allows profits to be taxed only once at the individual shareholder level
• C corporation dividend distributions do not affect shareholder basis while S corporation distributions reduce shareholder basis
• S corporation shareholders may deduct business losses against other income (subject to passive activity loss rules and basis limitations)

Double Taxation for C Corporations

Corporate-Level Taxation

• Double taxation occurs when corporate profits are taxed twice: first at the corporate level, then at the individual shareholder level
• C corporations pay corporate income tax on earnings at the applicable corporate tax rate (currently 21% flat rate)
• Corporate taxable income calculated by subtracting allowable deductions (operating expenses, depreciation) from gross revenue
• Corporations may carry forward net operating losses to offset future taxable income

Shareholder-Level Taxation

• When C corporations distribute dividends, shareholders pay personal income tax on these dividends
• Qualified dividends taxed at preferential capital gains rates (0%, 15%, or 20% depending on income level)
• Non-qualified dividends taxed as ordinary income (up to 37% federal rate)
• Effective tax rate on distributed C corporation earnings can exceed 50% when combining corporate and individual taxes
• Tax Cuts and Jobs Act of 2017 reduced corporate tax rate from 35% to 21%, partially alleviating double taxation burden

Mitigation Strategies

• Corporations may pay salaries to shareholder-employees to reduce corporate taxable income (subject to reasonable compensation rules)
• Retention of earnings for business purposes can defer shareholder-level taxation
• Use of corporate-owned life insurance policies can provide tax-free death benefits to the corporation
• Implementation of employee stock ownership plans (ESOPs) can provide tax benefits to both corporation and employees

Pass-Through Taxation for S Corporations

S Corporation Tax Filing Requirements

• S corporations file informational tax return Form 1120S annually
• Form 1120S reports company's financial results, including income, deductions, and credits
• S corporations provide each shareholder with Schedule K-1 detailing their proportionate share of company's financial items
• Shareholders report their share of S corporation income on individual tax returns (Form 1040, Schedule E)

Shareholder Basis and Taxation

• S corporation income "passes through" to shareholders, who pay taxes on their proportionate share regardless of actual distribution
• Shareholders' basis in S corporation stock adjusted annually to reflect share of income, losses, and distributions
• Increases in basis: share of income, capital contributions
• Decreases in basis: share of losses, distributions
• Distributions exceeding shareholder basis treated as capital gain
• Losses limited to shareholder's basis in stock and debt owed to shareholder by corporation

Special Considerations for S Corporations

• S corporations may be subject to built-in gains tax on appreciation of assets held at time of S election (if sold within 5 years)
• Excess net passive income tax applies if S corporation has accumulated earnings and profits from C corporation years and passive income exceeds 25% of gross receipts
• S corporations with more than $25 million in average annual gross receipts must use accrual method accounting

Eligibility for S Corporation Status

Shareholder Requirements

• S corporations limited to 100 shareholders (spouses counted as one shareholder)
• Eligible shareholders include U.S. citizens, residents, certain trusts, and estates
• Partnerships, corporations, and non-resident aliens prohibited as shareholders
• All shareholders must consent to S corporation election

Corporate Structure Limitations

• Must be domestic corporation incorporated in the United States
• Only one class of stock allowed (differences in voting rights permitted)
• Certain types of corporations ineligible (insurance companies, domestic international sales corporations)
• Corporations with nonresident alien shareholders ineligible

Election Process and Maintenance

• Eligible corporations file Form 2553 with IRS to elect S corporation status
• Deadlines: New corporations (within 2 months and 15 days of incorporation), Existing corporations (by March 15 for current year election)
• S corporations must continuously maintain eligibility requirements
• Termination of S status occurs if requirements violated (intentionally or unintentionally)
• Terminated S corporations generally prohibited from re-electing S status for 5 years without IRS approval