Alberta’s Boot Division is located in a country with a corporate tax rate of 10%, and the Sole Division is located in a country with a tax rate of 30%. The following illustrates the after tax contribution margin per unit under alternative transfer prices $18 and $11.

Boot Division

Sole Division

Selling price of hiking boots

$90

Selling price of sole

$18

Variable cost of manufacturing boot(not including sole)

35

Variable cost per sole

11

Cost of sole purchased internally

18

 

 

Why do the after tax contribution margins differ?