be strapped for cash
To not have any or very much money at the moment; to be broke, especially temporarily. Would you mind covering the cost of dinner? I'm a little strapped for cash at the moment. My brother always complains that he's strapped for cash, but it's no surprise when he won't go find a job!
be ˌstrapped for ˈcash
(informal) have very little money: I can’t come to the club tonight — I’m a bit strapped for cash.