Sales tax combined with promotion

[pmw]

Hi, all,

I've configured a shopping cart to use a sales tax, and a percentage-based "Product Discount" promotion. When I apply the promotion via a code, the right percentage is deducted. Then, however, a sales tax is calculated on the pre-promotion total. So a customer is charged tax on the portion of product that's been discounted.

That may be how it's designed, but at least in my state of Iowa, sales tax is to be collected only on the remaining portion of the total after all promotions/deductions. Is it possible to configure KonaKart for this via the admin GUI? If not, can you point me at what to change to make the smallest number of changes to the code?

[trevor]

In the admin app under Modules >> Order Totals, try moving the order of the Tax module below the discount module.

[pmw]

Trevor, thanks for the reply. The only thing that changing the order does is move around the display of entries on the ShowCartItems.do page. For example:

Subtotal: $100
-10% discount: $90
6% tax: $6
Total: $96

Versus:

Subtotal: $100
6% tax: $6
-10% discount: $90
Total: $96

[jasonmaclean]

I've tried the same thing in order to get the tax recalculated, but it does not. The desired outcome is to have the tax reflect the discounted sub total.