Extension to provide tax integration through specific tax provider implementation numeric priority value, higher value is of higher priority 1.0.0 <pre> <extension id="org.adempiere.model.StandardTaxProvider" name="Standard Tax Provider" point="org.adempiere.model.ITaxProvider"> <provider class="org.adempiere.model.StandardTaxProvider" priority="0"> </provider> </extension> C_TaxProvider.TaxProviderClass="org.adempiere.model.StandardTaxProvider" </pre> The class attribute must implement the org.adempiere.model.ITaxProvider class.