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.

Fact
Jeremy Bentham, a British philosopher who died in 1832,left his entire estate to the London Hospital provided that his body be allowed to preside over its board meetings. His skeleton was clothed and fitted with a wax mask of his face. It was present at the meeting for 92 years.      .. More >>