Save for a rainy day

To keep some money for a time in the future when you might need it.

Examples

I try to save for a rainy day, even if it's only a little each month.
My grandmother always told me to save for a rainy day.

How to use it

Neutral. Also "put something aside for a rainy day" and the noun "rainy-day fund".

a penny saved is a penny earnedSaving money is as valuable as earning it.