The term “Double Income No Kids”, more commonly called “DINKs”, refers to, you guessed it, couples that both work and have no kids. DINKs are typically in a demographic rich in disposable income, given the lack of expense of children and the fact that both partners are capable of producing income instead of caring for children.

Bankapedia's Take

Many people avoid using DINK in its acronym form for it sounds uncomfortably racist, despite the innocence of the term. As any great comedian will tell you, know your audience, and this is certainly true when it comes to using this word.

Also note the acronym for its cousin the DEWKS (Dually Employed with Kids).