Pay for everyone (5)
I believe the answer is:
treat
'pay for everyone' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for treat that I've seen before include "Stand a drink" , "Deal with - delightful surprise" , "Pay for someone's food or entertainment" , "Deal with - source of great pleasure" , "Something that causes special pleasure or delight" .)