tighten your belt
US /ˈtaɪ.tən jʊər bɛlt/
UK /ˈtaɪ.tən jʊər bɛlt/
1.
to spend less money than you did before because you have less money
:
•
Due to the economic downturn, many families have to tighten their belts.
•
If we want to afford that vacation, we'll have to tighten our belts for a few months.