Crossword Clue:

to require payment

Answer	Crossword Clue
MALWARE	It might require antiviral treatment to beat
EYETESTS	They require you to read the fine print
SOCCER	It may require you to use your head

DIARY	Book that might require a key to open
CHINUPS	They require you to pull your own weight
ALIMONY	Payment to an ex
IOU	Payment-to-come-later note
CONDOFEE	Payment to a building board
TOLL	Payment that many wait in line to make