All the money? (3)
I believe the answer is:
sum
This clue is a double definition.
'all' is the first definition.
(I've seen this before)
'money?' is the second definition.
(I've seen this in other clues)
'the' is the link.
(Other definitions for sum that I've seen before include "Amount of money; add" , "All one has" , "Mathematical problem" , "maths problem" , "See 25" .)