Charging Tax on Freight/Shipping Amount in Dynamics CRM 2011

Question

Is there a way to charge sales tax on shipping/freight in Dynamics CRM 2011 with the Orders entity?

By default, CRM charges tax only on the Amount and considers the Freight as tax-exempt, however many regions (such as Canada) require that tax is charged on the shipping freight/amount.

Alternatively, is it possible to change the Total Tax calculation (a CRM managed field), from currently:

Total Tax = (Detail Amount) * TaxRate

to:

Total Tax = (Detail Amount + Freight Amount) * TaxRate

?

Answer 1

Add a custom field called "Total tax (inc. freight)" with custom javascript to perform the calculation.

Answer 2

We've ultimately decided to bypass the built-in Freight Amount calculation and just create shipping as a separate line item. Not the ideal solution, but at least it gives us full control on the tax charged for shipping.