expression, godan verb (-ru)
hold the purse strings; control the finances
Idiomatic expression meaning to have control over household or organizational spending; often used for the person who manages the budget.
うちでは母が財布の紐を握っている。
In our house, my mother holds the purse strings.
会社の財布の紐を握るのは
It's the accounting manager who controls the company's purse strings.