Explanation
Two ways that a developer should configure taxes in B2B Commerce for Ursa Major are: configure a tax engine using third-party software and configure tax rates and rules for each state in Salesforce B2B Commerce. Configuring a tax engine using third-party software allows the developer to integrate with an external tax service provider that can calculate and apply accurate and up-to-date tax rates and rules for different states and jurisdictions. The developer can use the sfdc_checkout.TaxCalculations interface or the RegisteredExternalService object to connect to the third-party tax service provider's API or service.
Configuring tax rates and rules for each state in Salesforce B2B Commerce allows the developer to implement their own custom tax calculation logic using Apex code. The developer can use custom objects, such as TaxRate__c and TaxRule__c, to store and manage tax rates and rules for different states and products. The developer can also use the sfdc_checkout.TaxCalculations interface to define how to retrieve and apply tax rates and rules for a cart or an order. Using a different pricebook for each state is not a good way to configure taxes in B2B Commerce, as it can create complexity and inconsistency in pricing and discounting logic. Using the Salesforce out-of-the-box tax calculator is not a good way either, as it does not support complex or dynamic tax scenarios that may vary by state or jurisdiction. Salesforce References: [B2B Commerce Developer Guide: Tax Integration], [B2B Commerce Developer Guide: Tax Calculations Interface], [B2B Commerce Developer Guide: TaxRate Object], [B2B Commerce Developer Guide: TaxRule Object]