Learn how C corporation taxation works, why dividends can create double taxation, which forms apply, and how California taxes corporations.
A C corporation is a corporation taxed under the regular federal corporate income-tax rules. The corporation is a separate taxpayer that reports its own income and deductions, generally on Form 1120, and pays tax on its taxable income.
The name refers to Subchapter C of the Internal Revenue Code. A corporation is generally taxed as a C corporation unless it makes and maintains a valid S corporation election or qualifies for another specialized regime.
An eligible LLC can elect corporate classification and be taxed under the C corporation rules without changing its state-law form. That is another reason to separate legal entity type from tax classification.
The corporation calculates taxable income using its income, gains, deductions, losses, and credits. A regular domestic C corporation generally applies the 21% federal corporate income-tax rate to taxable income, subject to specialized rules.
Corporate taxable income is not the same as book profit or cash in the bank. Tax depreciation, capitalization, meals, compensation, interest limitations, credits, net operating losses, and other provisions can create differences.
The corporation's shareholders do not place corporate profit directly on their individual returns each year. Instead, owner-level tax generally arises from payments or transactions such as:
Each category has different rules. Calling every owner withdrawal a "distribution" does not determine its tax treatment.
C corporation income can face two levels of income tax:
The corporation generally does not deduct a dividend. By contrast, reasonable wages for actual services generally are deductible by the corporation and taxable to the employee, with payroll taxes and withholding.
Not every corporate dollar is double-taxed. Amounts retained in the company have not yet been taxed to shareholders as dividends. Salary is generally deducted before corporate taxable income is determined. Stock basis, return-of-capital rules, benefits, and other provisions can change owner-level treatment.
Assume Pacific Manufacturing has $120,000 of federal taxable income after deductible wages and other expenses.
| Step | Amount |
|---|---|
| Federal corporate taxable income | $120,000 |
| Federal corporate tax ($120,000 × 21%) | $25,200 |
| After-tax amount retained or available | $94,800 |
If the corporation later distributes $50,000 as a taxable dividend, the shareholder generally reports dividend income. The corporation does not deduct the $50,000 dividend. The shareholder's rate depends on whether the dividend is qualified, the shareholder's other income, holding-period rules, and possible net investment income tax.
This example excludes California tax, credits, payroll, alternative taxes, and specialized corporate rules.
A C corporation generally pays federal tax at the entity level. An S corporation generally passes taxable items through to shareholders and usually does not pay regular federal corporate income tax, although special entity-level taxes can apply.
C corporations can generally have an unrestricted number and type of shareholders and multiple classes of stock. S corporations have shareholder eligibility, number, and stock-class limitations.
An S corporation's pass-through income can create shareholder tax without cash distributions. A C corporation can retain after-tax earnings without immediately passing ordinary corporate profit to shareholder returns, although accumulated-earnings and personal-holding-company rules can matter.
A corporation and an LLC are different state-law entities. An LLC can be disregarded, partnership-classified, S-corporation-classified, or C-corporation-classified for federal tax purposes.
Choosing between them requires more than comparing 21% with an individual tax bracket. Owner compensation, payroll, dividends, loss use, benefits, investors, financing, exit plans, California taxes, administrative costs, and legal objectives all matter.
A regular C corporation generally files Form 1120. It may also file:
Corporate books should track shareholder contributions, stock basis information, loans, compensation, dividends, retained earnings, fixed assets, and tax-basis adjustments.
A C corporation incorporated, registered, or doing business in California generally files Form 100. The regular California corporation tax rate is 8.84% of net income; banks and financial corporations use different rules and rates. Corporations are generally subject to an $800 minimum franchise tax, with statutory exceptions that should be checked for the specific year and entity.
California taxable income can differ from federal taxable income because the state does not conform to every federal rule. Apportionment, nonbusiness income, credits, estimated payments, and doing-business standards can also affect the return.
Dividends received by California individual shareholders may also be taxable on their state returns. California does not provide a lower individual rate solely because a dividend qualifies for preferential federal treatment.
Heath Income Tax can prepare federal and California corporation returns, reconcile shareholder transactions and payroll, and help owners model compensation, dividends, and estimated payments.
Is a C corporation taxed at 21%?
A regular domestic corporation generally applies the 21% federal rate to taxable income, but credits, special taxes, state taxes, and owner-level tax affect the complete result.
Can a C corporation pass losses to shareholders?
Generally no. Corporate losses remain with the corporation and are used under corporate loss rules.
Are dividends deductible by the corporation?
Generally no. That nondeductibility creates the familiar second tax layer.
Can an LLC be taxed as a C corporation?
Yes. An eligible LLC can elect corporate classification, generally using Form 8832.
The definitions and examples on this page are for informational purposes only and do not constitute tax advice. Tax laws change frequently and individual circumstances vary. Consult a qualified tax professional before making decisions based on this content.
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