vested interest
US /ˈves.tɪd ˈɪn.trəst/
UK /ˈves.tɪd ˈɪn.trəst/

1.
kepentingan peribadi, kepentingan yang terjamin
a personal stake or involvement in an undertaking or state of affairs, especially one with an expectation of financial or other gain
:
•
As a shareholder, he has a vested interest in the company's success.
Sebagai pemegang saham, dia mempunyai kepentingan peribadi dalam kejayaan syarikat.
•
The politician's decision was influenced by his vested interest in the new development project.
Keputusan ahli politik itu dipengaruhi oleh kepentingan peribadinya dalam projek pembangunan baharu.