Practical guide to Order Total modules
First, Order Total Modules manage the format of Order Total price sheet.
Second, Order Total price sheet appears in the final steps of checkout process before the final invoice and clearly displays to customers the values of order subtotal, discounts, coupons, shipping costs and tax charges.
Third, Order Total price sheet clearly displays how (in what order) charges and benefits are calculated on purchased products.
Examples with tax calculations
Order Total Modules should be properly arranged before you calculate tax.
See 'Case 1' and 'Case 2'.
Case 1: Tax is calculated on products only
In the example below the tax amounts to 6.00 USD per 100.00 USD.
Case 2: Tax is calculated on products plus shipping
In the example below the tax amounts to 6.60 USD per 110.00 USD.
Note: The calculation scheme a store owner applies for taxes is determined by his/her national tax rules.