The most common and most likely answer to this crossword clue is the 1 plus 4 plus 4 letter word A FAST BUCK
I've seen this crossword clue in Financial Times
A
F
A
S
T
B
U
C
K
More clues leading to the result A FAST BUCK
- Easy profit The Deer Hunter might struggle to net?
- . American football authority baffled about British making easy money
- One tight young man quickly earned cash
- Easy money made by one firm throw
- Bet on this to win this?
- One wild young fellow easily made money
- A firm to resist such easy money
- Easy money from racing stag?
- Easily secured rhino is something hunter might miss
Buddy explains!

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.