Entry in account’s less, should have hundred instead of fifty... (6)
I believe the answer is:
access
'entry' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for access that I've seen before include "Entry (code)" , "drive, perhaps" , "Point of entry" , "Entrance or passage" , "fit" .)