Tax xC extension points
You can use the tax_integration_custom extension point to integrate with
an external tax system to calculate sales and shipping tax.
The following table identifies the extension point that you can use for integrating with
an external tax system.
For an example of registering the extension code and assigning the code to the extension
point, see Enabling tax integration extensions.
| Extension point | Where the extension point is used | Extension code implementation tips | Request, Response formats | Sample extension code location |
|---|---|---|---|---|
| tax_integration_custom | The calculate cart operation (POST cart/calculate or POST cart/{cartId}/calculate) or the
pre-checkout cart operation (POST cart/@self/precheckout) calls the tax_integration_custom extension
point to calculate tax. Tax_integration_custom is called once to calculate sales tax, with the costs
and discounts of the order items as inputs; and once to calculate shipping tax, with the freights of
the order items as inputs. |
When costs and discounts are supplied, the tax_integration_custom extension code should call the tax system to calculate the sales tax of each order item and set it as the order item's total tax. When freights are supplied, the tax_integration_custom extension code should call the tax system to calculate the shipping tax of each order item and set it as the order item's total tax. | TaxIntegrationCustomCmdUEInput, TaxIntegrationCustomCmdUEOutput | The taxIntegrationOrderCus method in workspace_dir/commerceue-app/src/main/java/com/ibm/commerce/order/ue/rest/OrderResource.java |