The most common and most likely answer to this crossword clue is the 3 plus 3 letter word FAT CAT
I've seen this crossword clue in Independent
F
A
T
C
A
T
More clues leading to the result FAT CAT
- Big cheese intact after rolling around bags
- Result of putting lots of dough in the kitty?
- Minutes written up in financial paper, one detested by have-nots?
- Businessman with nothing? Judgment needs reversing
- Tycoon‘s large Jaguar?
- Wealthy man of business, proud owner of a large corporation?
- Prosperous bloke in sporting organisation rejected discretion
- Rich guy’s reason to put pet on diet?
- Cunning statecraft with no rest curiously producing a moneybags
- Tycoon‘s overweight pet?
Buddy explains!

The straight part
We know that "Prosperous bloke" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case prosperous bloke = fat cat.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 FAT CAT mean?
FAT CAT noun- A rich person who contributes to a political campaign.
- Any affluent person who is perceived to have profited from the labour of others.