Providing returns while facing company collapse (6)
I believe the answer is:
fiasco
'collapse' is the definition.
(fiasco is a kind of collapse)
'providing returns while facing company' is the wordplay.
'providing' becomes 'if' (I've seen this in other clues).
'returns' says the letters should be written in reverse.
'while' becomes 'as'.
'facing' means one lot of letters go next to another.
'company' becomes 'co' (abbreviation).
'if' back-to-front is 'fi'.
'fi'+'as'+'co'='FIASCO'
(Other definitions for fiasco that I've seen before include "Sudden and complete collapse" , "Embarrassing failure" , "Complete disaster" , "A hopeless mess or ludicrous failure" , "Calamity" .)