|informal an entertainment, meal, etc, where each person pays for himself|
An outing or date on which each person pays his or her own way. To “go Dutch” is to go on such a date.
An outing or date in which each person pays his or her own expenses. For example, Her parents agreed that she might date if it were a Dutch treat. The related expression go Dutch means "to go on a date with each person paying their own way," as in Students often elect to go Dutch. The first term dates from about 1870, and the variant from the early 1900s.