take care of the pence, and the pounds will take care of themselves

take care of the pence, and the pounds will take care of themselves

You will always have money if you are attentive to your finances, especially the smallest amounts or transactions. Those little bits of money you spend here and there all add up and will drain your bank account in no time. Take care of the pence, and the pounds will take care of themselves.
See also: and, care, of, pound, take, themselves, will