入不敷出
to spend more money than you receive as income
Over 40% of Americans admitted they were living beyond their means.
He was using credit cards to live way beyond his means.
If that's her only income, she appears to be living beyond her means.
I try not to live beyond my means, but it's not always easy.
If you can't afford to pay off your credit card bill at the end of the month, you're living beyond your means.
See also: means (MONEY)