Cum-duty valuation prevents double addition of refunded duty to assessable value when the manufacturer has already borne the duty.

A refund of excess duty retained or recovered by a manufacturer could not be added again to assessable value as additional consideration where the sale price was treated on a cum-duty basis. On the accepted facts, the refunded amount was already embedded in the valuation structure and did not represent a fresh element capable of separate loading into assessable value. The department could not adopt a second valuation method to include the same amount twice. The demand based on such addition was therefore not sustainable, and the valuation adjustment was impermissible.

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Issues: Whether the amount of refund retained or recovered by the manufacturer could be added to the assessable value as additional consideration, and whether the demand based on such addition was sustainable.

Analysis: The appeal turned on the valuation treatment of a refund of excess duty in a situation where duty had been borne by the manufacturer and the price recovered from buyers was treated on a cum-duty basis. On the facts accepted in the calculation sheet, the refund already retained or recovered did not represent a fresh amount that could be separately loaded into assessable value. In such circumstances, the refund had to be worked into the cum-duty price structure, and the department could not adopt a second method to again include the same amount in assessable value after the first valuation approach had already been applied.

Conclusion: The demand was not sustainable and the addition of the refund to the assessable value was impermissible.

Final Conclusion: The appeal succeeded because the disputed refund could not be treated as additional assessable value on a cum-duty valuation basis.

Ratio Decidendi: Where duty is borne by the manufacturer and the recovered price is a cum-duty price, a retained or refunded duty amount cannot be again added to assessable value as additional consideration.

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