The Tax Calculation Features provide automated, real-time sales tax calculations during the payment process for merchants. This feature integrates seamlessly with payment gateways to ensure that the correct sales tax is applied based on the customer's location and the nature of the goods or services being sold. By automating this process, merchants can reduce the risk of human error, ensure compliance with varying tax regulations, and simplify their accounting processes. The feature is designed to handle complex tax rules and rates, making it easier for businesses to operate in multiple jurisdictions without the need for extensive manual calculations.