Penalty payment, if cleaner punctures balloon (9)
I believe the answer is:
surcharge
'penalty payment' is the definition.
'cleaner punctures balloon' is the wordplay.
'cleaner' becomes 'char' (charwoman is a type of cleaner).
'punctures' is an insertion indicator (some letters create an opening in a word).
'balloon' becomes 'surge' (both can mean to increase sharply).
'char' going within 'surge' is 'SURCHARGE'.
'if' is the link.
(Other definitions for surcharge that I've seen before include "Additional cost" , "Additional sum demanded" , "Additional payment" , "Excess fee" , "Tax" .)