Conservative forking out nothing in tax (3)
I believe the answer is:
try
'tax' is the definition.
(I've seen this in another clue)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for try that I've seen before include "Attempt a score" , "shot" , "Attempt; smooth (wood)" , "crack" , "Aim" .)