vested interest

American  

noun

1. a special interest in an existing system, arrangement, or institution for particular personal reasons.

2. a permanent right given to an employee under a pension plan.

3. vested interests, the persons, groups, etc., who benefit the most from existing business or financial systems.

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vested interest British  

noun

1. property law an existing and disposable right to the immediate or future possession and enjoyment of property

2. a strong personal concern in a state of affairs, system, etc, usually resulting in private gain

3. a person or group that has such an interest

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vested interest Cultural  

1. A phrase that indicates a deep personal (and possibly financial) interest in some political or economic proposal: “As a major stockholder of the Ford Motor Company, Senator Bilge had a vested interest in legislation restricting the import of Japanese autos.” The plural, vested interests, often refers to powerful, wealthy property holders: “His radical policies enraged vested interests.”

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vested interest Idioms  

1. A personal stake in something, as in She has a vested interest in keeping the house in her name. This term, first recorded in 1818, uses vested in the sense of “established” or “secured.”

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Usage

What does vested interest mean? A vested interest is a special interest in something due to a personal reason, especially the potential to benefit from the situationIf you didn’t study for a test and you ask your teacher to change the test date, you have a vested interest in their answer. A vested interest is a personal stake, often tied to money or power, as in I have a vested interest in you winning this match—I bet a lot of money on you!A company or organization can also have a vested interest, as in Tobacco companies have a vested interest in the prevention of any laws that would reduce smoking. The plural vested interests is used to refer to those people or organizations that will benefit from a system, arrangement, or situation. Example: As the owner of the company, Michelle had a vested interest in seeing it succeed.

Etymology

Origin of vested interest

First recorded in 1810–20

Example Sentences

It is working well enough for the big professional leagues, which collect sportsbook sponsorships and, probably more importantly, sometimes get a ratings bounce from people who are watching their games with a vested interest.

From Slate • Apr. 28, 2026

“It really gives us a vested interest in doing what we can to protect the state and mitigating the causes of climate change.”

From Los Angeles Times • Apr. 20, 2026

First, the fact that she felt a vested interest in how much money he gives to his kids crosses a boundary that would make most people uncomfortable.

From MarketWatch • Apr. 13, 2026

The intent was to remove map-drawing authority from politicians with a vested interest in picking their constituents and to create a process governed by constitutional rules.

From The Wall Street Journal • Feb. 13, 2026

But we too embrace faulty causes, usually at the urging of an expert proclaiming a truth in which he has a vested interest.

From "Freakonomics: A Rogue Economist Explores the Hidden Side of Everything" by Steven D. Levitt