1. He's short on cash.
2. He's broke. (= he has no money)
3. His bank account is overdrawn.
4. He's just scraping by. (= he is just barely surviving on little money)
5. He makes minimum wage. (= he earns the minimum salary)
6. He's pinching pennies.
7. He's scrimping and saving.
8. She's very wealthy.
9. She's quite well-off.
10. She's loaded.
11. She's filthy rich.
12. She inherited a fortune.
13. She's making a killing.
14. She's raking in the cash.
15. She's rolling in dough.
#6 and #7 express the idea that the person is trying to conserve money, when they have very little money.

History Facts
During the Great Plague that struck England in 1665–66, boys at Eton school were punished for not smoking – smoking was thought to protect them from the disease.      .. More >>