Tighten your belt
Meaning: to spend less money than one did previously
Example: Marian lost her job so now the family has to make it on Sam’s paycheck. They’re going to have to tighten their belts and spend less until she finds another job.
Example: Marian lost her job so now the family has to make it on Sam’s paycheck. They’re going to have to tighten their belts and spend less until she finds another job.