Pay back something related to income tax? (6)
I believe the answer is:
return
'pay back' is the definition.
(thesaurus)
'something related to income tax?' is the wordplay.
I cannot quite understand how this works, but
'related to' could be 're' (abbreviation for 'regarding') and 're' is found in the answer.
The remaining letters 'turn' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for return that I've seen before include "Profit earned on money" , "Yield" , "get back to original state" , "election to parliament" , "Come back with financial statement" .)