The idea is that you were "given" that money when you got the loan and you weren't taxed on the value of the loan when it was provided to yoy, so you can't deduct it when you pay it back.
The idea is that you were "given" that money when you got the loan and you weren't taxed on the value of the loan when it was provided to yoy, so you can't deduct it when you pay it back.