I would like to add discount codes that do not affect the calculation of tax. In our other platform, it is called an instant rebate. For example, we would want a code that will apply a 50% off instant rebate to the product price, but its added after the calculation of tax and shipping. The manufacturer then reimburses the rebate amount. Shopify doesn’t have a native solution. And I can’t find an app that will mimic this feature. Does anyone have any suggestions or apps that may work.