The atg.commerce.pricing.TaxPricingCalculator interface modifies the price of tax for an order.

The tax pricing engine invokes the priceTax method of the TaxPricingCalculator (or calculators). The calculator’s priceTax method modifies the input pPriceQuote according to the current pricing context. The specific way in which the calculator modifies a tax price varies according to individual implementations.

Oracle ATG Web Commerce includes several classes that are implementations of the TaxPricingCalculator interface. For example, it includes the atg.commerce.pricing.NoTaxCalculator class, which you can use for situations in which a sales tax of zero is applicable for an order.