No, a C corporation is not a pass-through entity. It pays federal income tax on its own profits at a flat 21 percent rate under Internal Revenue Code Section 11, and shareholders pay tax a second time when those profits come out as dividends.1Office of the Law Revision Counsel. 26 USC 11 – Tax Imposed Pass-through entities work the opposite way: the business itself owes no federal income tax, and profits are taxed once on the owners’ personal returns.
Why the C Corporation Sits Outside the Pass-Through Category
The IRS treats a C corporation as a separate taxpaying person. The corporation tracks its own gross revenue, subtracts its deductible expenses, and pays 21 percent on what’s left, all out of its own accounts before any money reaches shareholders.2Internal Revenue Service. Forming a Corporation Whether the company distributes every dollar of profit or reinvests all of it, the entity-level tax applies.
That is the wall that defines the category. Pass-through means no wall: the business earns, and the income is reported straight through to the owners. A C corporation, by design, keeps the IRS and the owners on opposite sides of a taxpaying entity. Because that structural feature is what disqualifies it from pass-through treatment, no accounting choice or distribution pattern can change the classification.
The Second Layer: Dividend Tax on Shareholders
After the corporation pays its 21 percent, profits distributed as dividends are taxed again on shareholders’ personal returns. The IRS treats those dividends as personal income even though the underlying dollars have already been taxed once at the corporate level. This is the double taxation people talk about when they compare structures.
The rate on the second layer depends on whether the dividend qualifies for preferential capital gains treatment. To qualify, a shareholder must hold the stock for at least 61 days during the 121-day period beginning 60 days before the ex-dividend date.3Internal Revenue Service. IRS Guidance on Qualified Dividend Holding Period Qualified dividends are taxed at 0, 15, or 20 percent depending on income.4Internal Revenue Service. 1099-DIV Dividend Income Dividends that fail the holding period are taxed at ordinary income rates, which run as high as 37 percent.
Higher earners face an additional 3.8 percent net investment income tax on the lesser of net investment income or the amount by which modified adjusted gross income exceeds $200,000 for single filers, $250,000 for married joint filers, and $125,000 for married separate filers.5Internal Revenue Service. Topic No. 559, Net Investment Income Tax Those thresholds are not indexed for inflation.6Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax
How Pass-Through Entities Tax the Same Dollar
Pass-through taxation works on a different principle. S corporations, partnerships, and sole proprietorships owe no federal income tax at the entity level. Profits and losses flow directly to the owners’ personal returns, where they are taxed once at individual rates. A partnership that earns $500,000 owes nothing itself beyond an informational filing; each partner reports their share and pays personal tax on it.
There is a catch on the owner’s side. Pass-through owners owe tax on their share of profits even when the money stays in the business, which can create a cash squeeze if profits were reinvested in inventory or equipment. The tradeoff is that the second layer of tax never appears. Because a C corporation maintains that taxpaying barrier between the business and its owners, it falls outside the pass-through category by definition.
The 199A Deduction C Corporation Shareholders Cannot Use
Pass-through owners picked up another advantage under the Tax Cuts and Jobs Act. Section 199A allows a deduction of up to 20 percent of qualified business income, but the statute limits it to taxpayers “other than a corporation,” and the deduction is computed at the individual partner or shareholder level for partnerships and S corporations.7Office of the Law Revision Counsel. 26 USC 199A – Qualified Business Income C corporation shareholders get no equivalent break on their dividend income, so the effective tax gap between the two structures is wider than the headline rates alone suggest.
Which Entities Actually Qualify as Pass-Throughs
Federal tax law recognizes a defined set of pass-through structures: S corporations, general and limited partnerships, limited liability companies taxed as partnerships or sole proprietorships, and sole proprietorships themselves. They differ on formation rules and liability protection, but they share the core feature of no entity-level federal income tax. A C corporation is the standard alternative, and any business classified as a C corporation is by definition not on this list.
How Losses Behave in Each Structure
The classification also changes what happens in a bad year. When a C corporation loses money, the loss stays inside the corporation. It does not flow through to shareholders’ personal returns, so owners cannot use it to offset wages, investment income, or other personal income. The corporation carries the loss forward against future taxable income, capped at 80 percent of taxable income in any given year for losses arising after 2017.8Office of the Law Revision Counsel. 26 USC 172 – Net Operating Loss Deduction
Pass-through owners can often apply business losses against other personal income in the year they occur, subject to basis and at-risk limits. That difference is one of the reasons some new businesses that expect early losses prefer a pass-through structure while they are still burning cash.
Converting a C Corporation to Pass-Through Status
A C corporation that wants pass-through treatment can elect S corporation status by filing Form 2553. The election must be made no later than two months and 15 days after the beginning of the tax year it is meant to take effect, or at any point during the preceding tax year, and every shareholder must consent.9Internal Revenue Service. Instructions for Form 255310Office of the Law Revision Counsel. 26 USC 1362 – Election, Revocation, Termination
Not every C corporation qualifies. The business must be a domestic corporation with no more than 100 shareholders, all of whom are individuals, certain trusts, or estates. Partnerships, other corporations, and nonresident aliens cannot be shareholders, and the corporation can have only one class of stock.10Office of the Law Revision Counsel. 26 USC 1362 – Election, Revocation, Termination A corporation that misses the filing window may still qualify for late-election relief if it can show reasonable cause and files within three years and 75 days of the intended effective date.9Internal Revenue Service. Instructions for Form 2553
Converting does not wipe out every trace of the C corporation years. The IRS imposes a built-in gains tax on appreciated assets held at the time of conversion if those assets are sold within five years. Any accumulated earnings and profits from the C corporation years can also create problems if the new S corporation earns passive investment income exceeding 25 percent of gross receipts. These transition rules are where most conversion planning mistakes happen, and they deserve careful attention before Form 2553 goes in.