From Longman Dictionary of Contemporary Englishtime is moneytime is moneyused to say that wasting time or delaying something costs money → time
Examples from the Corpus
time is money• That costs time, and time is money.• That would be a waste of their time, and time is money.• Plus, it only takes seconds to connect up, and as time is money that's always important.• For the developer, time is money.• They know time is money so they have a policy of buying it with yours and everyone else's. 5.• My time is money for me and the firm.• It is often said that time is money, but it is seen as cost and not value. 