Warning Messages

Some combinations of tax-related options might be confusing to customers and trigger a warning. These conditions might occur when the tax calculation method is set to “Row” or “Total,” and the customer is presented with prices that both exclude and include tax, or a tax on an item basis in the cart. Because the tax calculation is rounded, the amount that appears in the cart might differ from the amount that a customer expects to pay.

If your tax calculation is based on a problematic configuration, the following warnings appear:

Warning. Tax discount configuration might result in different discounts than a customer might expect for store(s); Europe Website (French), Europe Website (German). Please see source for more details.

Warning. Tax configuration can result in rounding errors for store(s): Europe Websites (French), Europe Websites (German).

Calculation Settings

Use the following tables for reference when configuring tax calculation settings:

Tax Calculation Method Based On: Excluding Tax

Tax Excluded

Price Display Unit Price Row Total Total
Tax Class for Shipping Shipping (is taxed)    
Excluding tax OK OK OK
Including tax OK OK OK
Including and Excluding tax OK OK Warning

Catalog Prices: Including Tax

Tax Included

Price Display Unit Price Row Total Total
Excluding tax OK OK OK
Including tax OK OK OK
Including and Excluding tax OK Warning Warning

Calculation Settings

Discount Settings

We strongly recommend that you use the following settings to avoid issues when configuring taxes in relation to discounts:

Field Recommended Setting
Apply Customer Tax After Discount
Apply Discount on Prices US and Canada—Excluding Tax
EU—Including Tax