The most common and most likely answer to this crossword clue is the 8 letter word RESOURCE
I've seen this crossword clue in The Daily Telegraph
R
E
S
O
U
R
C
E
More clues leading to the result RESOURCE
- Find a new supplier for stock
- Rescuer splashing about round pool
- Supply troops before spring
- To find a new supplier is expedient
- To find new supplier is expedient
- Invested in shares, our central fund
- Soldiers have gone off with church fund
- Military informant shows initiative
- Reserves on booze reportedly!
- Support we can call on partly secures our centre
Buddy explains!

The straight part
We know that "supply of money" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case supply of money = resource.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does RESOURCE mean?
RESOURCE noun- Something that one uses to achieve an objective, e.g. raw materials or personnel.
- A person's capacity to deal with difficulty.
- To supply with resources.