Pulse finally brisk in one obsessed with fiscal matters? (6,3)
I believe the answer is:
monkey nut
'pulse' is the definition.
(monkey nuts are pulses)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for monkey nut that I've seen before include "goober" , "seed" , "It could be in the bag" , "source of oil" , "Not my nuke (anag.)" .)