Tightwad

A 'tightwad' is a person who likes to hold on to their money and not spend it. The term is not a compliment, but is pejorative, and the person is often considered to be 'cheap.'

Example:
-My favorite kids' store is Gymboree. Where do you get your girls' clothes?
-I love Gymboree, too, but my husband is a total tightwad.