moderately wealthy person; person of modest means
Refers to someone who is not extremely rich but has a comfortable amount of money; often carries a slightly humble or self-deprecating tone.
He is moderately wealthy and goes on an overseas trip once a year.
I'm only a person of modest means, so I can't afford such a luxury car.
大金持ち means a very wealthy person, contrasting with the moderate wealth of 小金持ち.
Compound of 小 (ko, 'small') + 金持ち (kanemochi, 'rich person'). The reading こがねもち is a rendaku form of かねもち.