a vested interest Meaning If you have a vested interest in s | English Language

a vested interest

Meaning
If you have a vested interest in something, you have a strong personal interest in it because you stand to gain from it.

For example

The Minister of Commerce is suspected of having vested interests in several companies that have won big government contracts recently.

As both a shareholder in a publishing company and a published author, the newspaper's book reviewer is seen as having vested interests in certain publishers.

Note
This idiom is mostly used in reference to people who use their power or influence unethically for their personal benefit.
━━━━━━━━━━━━━
#Idiom_of_the_Day
@EnglishoftheDay
@QuizoftheDay