No place for sudden expenditure increase (5)

I believe the answer is:
surge
'increase' is the definition.
(surge is a kind of increase)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for surge that I've seen before include "Eddy" , "Rise rapidly" , "significant increase" , "Movement in crowd" , "Sudden rapid rise" .)
