(1) An entity obtains a
"duty benefit" if an amount of duty payable by the entity under this Act apart from this chapter is, or could reasonably be expected to be, less than it would have been apart from the scheme or a part of the scheme.
(2) The amount of the duty benefit is the difference between the amount of duty payable and the amount of duty that would have been payable apart from the scheme or part of the scheme.