Should my business be a C corporation?
It depends on whether profits stay in the business
It depends on what you do with the profit. IRC §11(b) taxes C corporation income at a flat 21%. Profit kept in the company for growth is taxed only at that rate, which can be lower than an owner's top individual rate. Profit paid out as dividends is taxed again, at up to 20% plus the 3.8% net investment income tax, so the combined tax can exceed the pass-through result.
Reviewed by Ebot Mbi, CPA, EA · Last reviewed · Law and figures current as of September 17, 2026
Key takeaways
- IRC §11(b) sets a flat 21% corporate rate; individual rates are graduated up to 37%.
- Distributed profit is taxed twice: 21% at the company, then up to 23.8% on qualified dividends.
- Pass-through owners may qualify for the QBI deduction, which C corporation income does not receive.
- The accumulated earnings tax (IRC §531) and personal holding company tax (IRC §541) limit stockpiling.
- C corporation status is required for qualified small business stock under IRC §1202.
What it is
A C corporation is a separate taxpayer. It reports its income on Form 1120 and pays corporate income tax. When it distributes earnings to shareholders as dividends, the shareholders pay tax again on their individual returns. This is the double tax.
In a pass-through business, by contrast, profit is taxed once, on the owners' returns, at graduated individual rates. The C corporation choice is a trade-off: a lower flat rate on profit kept in the business, in exchange for a second tax when that profit comes out.
What the law says
IRC §11(a) imposes tax on the taxable income of every corporation, and IRC §11(b) sets the rate at 21%. Qualified dividends are taxed to individuals at 0%, 15%, or 20% under IRC §1(h), and IRC §1411 adds a 3.8% net investment income tax for individuals whose modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly).
IRC §531 imposes a 20% accumulated earnings tax on corporations that accumulate earnings beyond the reasonable needs of the business to avoid shareholder-level tax. IRC §541 imposes a similar tax on personal holding company income.
Requirements and tests
A C corporation strategy works only when these conditions hold:
- The business can reinvest a meaningful share of profit for real business needs, such as equipment, inventory, expansion, or working capital, and documents those needs.
- Owners can live on a reasonable salary (deductible to the company) rather than on dividends.
- Accumulated earnings stay within the reasonable needs of the business, generally above the $250,000 accumulated earnings credit ($150,000 for certain service corporations).
- The company is not primarily an investment holding company, which could trigger personal holding company tax.
- There is a plan for eventual exit: a sale of stock, a qualified small business stock exclusion, or a step-up in basis at death.
How it works
The company pays you a salary for your work, which it deducts. It pays 21% on remaining taxable income. Profit left inside funds growth. When you take profit out as a dividend, you report it on Form 1040. If you later sell your stock, the retained earnings are generally reflected in a higher sale price and taxed as capital gain.
The comparison must include the whole path. Retained profit may benefit from the 21% rate for years, but if you need the money personally, the combined tax on distributed profit usually exceeds the tax on pass-through income. Pass-through owners may also claim the IRC §199A QBI deduction, which OBBBA made permanent, lowering their effective rate below the bracket rate.
Other factors belong in the comparison. A C corporation can deduct certain fringe benefits for owner-employees that pass-through owners cannot, and it can claim a full deduction for state income taxes it pays. Losses stay inside the corporation as net operating losses instead of reaching your return. When you sell, buyers often prefer to buy assets, which can produce corporate-level gain followed by a second tax on liquidation, while a stock sale may qualify for the IRC §1202 exclusion if the requirements are met. Each of these points can change the answer for your business.
Assumptions: Tax year 2026; married filing jointly.; The owner has enough other income that every additional dollar is taxed at the top 37% bracket and the owner is above the NIIT threshold.; No QBI deduction is available on the pass-through income (for example, a specified service business above the phase-out).; Dividends are qualified and taxed at 20% plus 3.8% NIIT.; Ignores state taxes, payroll taxes, and the time value of money.
| Pass-through: $500,000 × 37% | $185,000 |
|---|---|
| C corporation, profit retained: $500,000 × 21% | $105,000 |
| Profit left in the company after corporate tax | $395,000 |
| Dividend tax if all $395,000 is paid out (23.8%) | $94,010 |
| C corporation, profit fully distributed: total tax | $199,010 |
Under these assumptions, retaining profit costs $80,000 less tax than the pass-through this year, but distributing everything costs about $14,000 more; with lower brackets or a QBI deduction, the pass-through gap narrows or reverses.
Illustration only; not a projection of your results.
Risks and IRS scrutiny
The IRS can challenge excessive salaries paid to owners as disguised dividends, which are not deductible, and can assert the accumulated earnings tax when cash builds up without documented business needs. Personal expenses paid by the company can be treated as constructive dividends. Converting later from C to S status can trigger built-in gains tax on appreciated assets.
Moving from a pass-through to a C corporation also requires careful structuring of the transfer of assets, usually under IRC §351.
Who it is not for
A C corporation usually does not fit owners who need most of the profit for personal living costs, because the second layer of tax applies to every dividend. It is a poor fit for businesses that qualify for a sizable QBI deduction, for owners who want losses to flow to their personal return, and for companies that would accumulate cash without a documented business purpose. Small businesses may also find that the added compliance cost outweighs any rate difference.
How ebotCPA helps
We model your profit through both structures over several years, including salary, dividends, QBI, NIIT, and the exit, and we document reasonable business needs for any earnings the company keeps. We coordinate with your attorney, who drafts the legal documents.
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.
We coordinate with your attorney, who drafts the legal documents.
Frequently asked questions
Is a C corporation better than an S corporation for taxes?
It depends on whether profit stays in the business. Retained profit is taxed at 21%, but distributed profit faces a second tax. Owners who take most profit out generally pay less as a pass-through.
What is the double taxation of a C corporation?
The company pays 21% on its taxable income, and shareholders pay tax again when they receive dividends, at up to 20% plus the 3.8% net investment income tax.
How much cash can a C corporation keep without penalty?
Most corporations may accumulate $250,000 without justification ($150,000 for certain service corporations). Beyond that, the accumulated earnings tax can apply unless the earnings are held for reasonable business needs.
Does a C corporation help with qualified small business stock?
Yes. The IRC §1202 exclusion applies only to stock of a C corporation that meets the statute's requirements.
Have facts like these?
Book a $497 Case Analysis to have Ebot Mbi, CPA, EA review your facts before you act.