The officer prong, and the cap that keeps it honest. The statute's first category is an officer of the employer having annual compensation greater than $130,000, and a following sentence directs that the $130,000 be adjusted at the same time and in the same manner as under section 415(d), in $5,000 increments rounded to the next lower multiple of $5,000. That is why the working figure is $235,000 for 2026 rather than the number printed in the Code. Then comes the limit: "no more than 50 employees (or, if lesser, the greater of 3 or 10 percent of the employees) shall be treated as officers." A business with 40 employees can treat at most 4 of them as officers for this purpose; a business with 12 can treat at most 3. Officer status here is a question of function and authority rather than of what a business card says, and the cap means a company cannot expand the key employee group simply by expanding the title. Which officers the cap leaves out, where a company has more than the cap allows, is answered by the regulations under section 416 rather than by the statute.
The two ownership prongs work very differently from each other. A 5-percent owner is anyone who owns more than 5 percent of the outstanding stock, or stock with more than 5 percent of the combined voting power, of a corporate employer, or more than 5 percent of the capital or profits interest where the employer is not a corporation. That prong has no compensation requirement at all: an owner earning nothing is still a key employee. A 1-percent owner is the same test with 1 percent substituted, and that prong does carry a compensation requirement of more than $150,000. The $150,000 is a fixed statutory amount. The indexing sentence in section 416(i)(1)(A) reaches only the $130,000 in the officer clause, so wage growth alone pulls steadily more small owners across the 1-percent line over time without Congress doing anything.
Ownership is not counted the way a cap table counts it. Section 318's constructive-ownership rules apply, with one modification the statute makes expressly: the 50 percent threshold in section 318(a)(2)(C) is read as 5 percent for this purpose. Stock owned by a spouse, child, grandchild or parent can be attributed to an employee who holds none personally, which is how a family business ends up with key employees who would deny being owners. In the other direction, section 416(i)(1)(C) switches off the controlled-group and affiliated-service-group aggregation rules of section 414(b), (c) and (m) for the ownership determination, so ownership is tested against the employer entity rather than across the whole related group.
Three smaller rules that change the count. Officers and employees of an entity maintaining a governmental plan under section 414(d) are excluded from key employee status outright. Employees described in section 414(q)(5), the short-service and young and part-time categories a plan may disregard, are left out when counting how many officers there are, which matters most at a business with heavy seasonal or part-time staffing. And the statute provides that "employee" and "key employee" include their beneficiaries, so a deceased participant's balance does not quietly move to the other side of the test.
What the label does not do. Key employee status caps nothing. It does not limit what the person may defer, does not reduce an employer contribution to them, and does not restrict any benefit. It determines whose account balances go in the numerator of a concentration test, and the burden of failing that test falls on the employer, in the form of a minimum contribution owed to the employees who are not key.