A tax return? (6)
I believe the answer is:
refund
This clue could be a double definition.
'a tax' is the first definition.
The answer and definition can be both related to property as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'return?' is the second definition.
(I know that give back can be written as refund)
Can you help me to learn more?
(Other definitions for refund that I've seen before include "money to be paid back" , "Give back" , "Money returned" , "Cash back" .)