What Is a Closely Held Corporation? IRS 5/50 Test and Taxes

A closely held corporation is a C corporation in which more than 50 percent of the stock’s value is owned, directly or indirectly, by five or fewer individuals at any point during the last half of the tax year, provided the company is not a personal service corporation.¹ The label matters because the IRS applies special rules to these companies: limits on passive activity losses, restrictions under the at-risk rules, and penalty taxes on income the corporation piles up instead of paying out.

The IRS 5/50 Test

Two conditions have to be met, and both are required:²

More than 50 percent of the outstanding stock, by value, is owned by five or fewer individuals at any time during the last half of the tax year.
The corporation is not a personal service corporation (one whose main activity is personal services performed largely by employee-owners).

“Individual” here is broader than it sounds. Certain trusts and private foundations count as individuals for this test, not only natural persons.¹ And because the IRS looks at any moment in the second half of the year, a corporation that begins the year with widely dispersed ownership can still cross the threshold if shares concentrate later.

Who Counts as an Owner: Constructive Ownership

The 5/50 test does not stop at shares registered in a person’s name. Under Section 544 of the Internal Revenue Code, you are treated as owning stock held by close family and by certain entities you are connected to.³ The family members whose shares are attributed to you include:

Your spouse
Brothers and sisters, including half-siblings
Ancestors, such as parents and grandparents
Lineal descendants, such as children and grandchildren

Shares held by a corporation, partnership, estate, or trust are treated as owned proportionately by its shareholders, partners, or beneficiaries.¹ Stock owned by a business partner also counts as yours. These rules can pull a company over the 50-percent line even when no single person appears to hold a controlling block on the stock register.

Passive Activity Loss Rules

Closely held C corporations get a partial break on passive losses that most other taxpayers do not. Ordinarily, passive activity losses can offset only passive income. A closely held C corporation, other than a personal service corporation, may also use passive losses to offset its net active income, meaning income from the corporation’s own operating business.⁴

What passive losses still cannot do is offset portfolio income: interest, dividends, annuities, royalties, and capital gains from investments. The same treatment applies to passive activity credits.¹ So a closely held corporation with a loss-generating rental property can use that loss against income from its main business, but not against the returns on its investment portfolio. Corporations subject to these limits report them on Form 8810.

At-Risk Rules

The at-risk rules cap the deductions a closely held corporation can take from certain activities at the amount it actually has on the line: money and property invested, plus amounts borrowed for which the corporation is personally liable.⁵ The activities covered include farming, oil and gas exploration, producing or distributing films, leasing certain equipment, and geothermal development.¹

There is one significant carveout. If a closely held corporation is actively engaged in equipment leasing and at least 50 percent of its gross receipts come from that activity, the at-risk rules do not apply to its leasing losses.⁵

Penalty Taxes on Retained Income

Two additional federal taxes target closely held corporations that hold onto income instead of distributing it.

Accumulated Earnings Tax

If a corporation retains earnings beyond the reasonable needs of the business, the IRS can impose a 20 percent tax on the excess.⁶ There is a minimum credit that shields the first $250,000 of accumulated earnings. For service corporations in fields such as health, law, engineering, accounting, architecture, actuarial science, performing arts, and consulting, the shielded amount is $150,000.⁷

Retaining earnings is fine when the corporation has specific, definite, and feasible plans to use them. Accumulations for anticipated business expansion, product liability reserves, or funds set aside to redeem stock included in a deceased shareholder’s estate can all qualify as reasonable.⁸ Stockpiling cash with no business purpose is what draws IRS scrutiny.

Personal Holding Company Tax

A closely held corporation earning most of its income from passive sources such as dividends, interest, rents, or royalties may also fall within the personal holding company rules. If it does, undistributed personal holding company income faces a flat 20 percent tax in addition to the regular corporate tax.⁹ The point of this tax is to keep shareholders from using a corporation as a personal investment vehicle to shelter income from higher individual rates. Paying the income out as dividends before year-end removes the exposure.

How Ownership and Control Usually Work

In a closely held corporation, the shareholders typically run the business themselves. They sit on the board and serve as officers, drawing salaries in addition to any dividends or distributions. There is no meaningful separation between ownership and management, so decisions can move quickly without layered approvals.

The trade-off is minority shareholder exposure. Shares are not traded on any public exchange, so there is no ready market to exit through. When the same people set executive pay, approve contracts, and vote on dividends, the checks that protect smaller investors in public companies are largely absent. A well-drafted shareholder agreement, addressing buyout terms, dividend policy, and dispute resolution before any conflict arises, is the standard preventive measure.

The S Corporation Alternative

A closely held corporation organized as a C corporation faces the passive activity limits, the at-risk rules, and double taxation, since the corporation pays tax on its income and shareholders pay tax again on dividends. Electing S corporation status passes income and losses through directly to shareholders and removes the passive activity and at-risk restrictions that apply specifically to closely held C corporations.¹

To qualify, the company must:¹⁰

Have no more than 100 shareholders
Have only individual shareholders, or certain trusts and estates, and no partnerships, corporations, or nonresident aliens
Have only one class of stock
Be a domestic corporation

The election is made on Form 2553. For a calendar-year business, it must be filed no more than two months and 15 days after the start of the tax year the election should take effect, or at any time during the preceding tax year.¹¹ Miss the window and the election generally takes effect the following year.

S status is not the right fit for every closely held company. The single-class-of-stock rule and the shareholder-type limits can be too restrictive for a business that plans to bring in institutional investors or issue preferred shares. The choice comes down to ownership structure, growth plans, and how the company intends to distribute profits.

1
Internal Revenue Service. Publication 542, Corporations
2
Internal Revenue Service. Entities 5
3
Office of the Law Revision Counsel. 26 USC 544 – Rules for Determining Stock Ownership
4
Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited
5
Office of the Law Revision Counsel. 26 U.S. Code 465 – Deductions Limited to Amount at Risk
6
Office of the Law Revision Counsel. 26 U.S. Code 531 – Imposition of Accumulated Earnings Tax
7
Office of the Law Revision Counsel. 26 U.S. Code 535 – Accumulated Taxable Income
8
eCFR. 26 CFR 1.537-1 – Reasonable Needs of the Business
9
Office of the Law Revision Counsel. 26 USC 541 – Imposition of Personal Holding Company Tax
10
Office of the Law Revision Counsel. 26 USC 1361 – S Corporation Defined
11
Internal Revenue Service. Instructions for Form 2553