Introduction:

This calculates the relative price based on the group total amount excluding sibling Order lines that are marked with a custom property.

• The custom property name is specified by the calculator setting ExemptCustomPropertyName.
• For example ExemptCustomPropertyName="Is exempt from sales tax;"

Example:

The Sales tax line is 10% from the Uplift line excluding the Airport Flowage fee.

Configuration:

1. Edit Fuel Sales Tax product and assign this calculator.

2. In the settings box enter

ExemptCustomPropertyName=Is exempt from sales tax;

3. Edit the Airport Flowage Fee product and Assign the custom value Is exempt from sales tax | yes