Disable Coupon in Magento2 in the cart and in the checkout
The best approche is to add these files "checkout_cart_index.xml" and "checkout_index_index.xml" in this directory
app/design/frontend/{Vendor}/{theme}/Magento_Checkout/layout/
with this content
checkout_cart_index.xml
<?xml version="1.0"?> <page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <body> <referenceBlock name="checkout.cart.coupon" remove="true"/> </body> </page>
and checkout_index_index.xml
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <body> <referenceBlock name="checkout.root"> <arguments> <argument name="jsLayout" xsi:type="array"> <item name="components" xsi:type="array"> <item name="checkout" xsi:type="array"> <item name="children" xsi:type="array"> <item name="steps" xsi:type="array"> <item name="children" xsi:type="array"> <item name="billing-step" xsi:type="array"> <item name="component" xsi:type="string">uiComponent</item> <item name="children" xsi:type="array"> <item name="payment" xsi:type="array"> <item name="children" xsi:type="array"> <item name="afterMethods" xsi:type="array"> <item name="children" xsi:type="array"> <!--Disable Discount here--> <item name="discount" xsi:type="array"> <item name="config" xsi:type="array"> <item name="componentDisabled" xsi:type="boolean">true</item> </item> </item> </item> </item> </item> </item> </item> </item> </item> </item> </item> </item> </item> </argument> </arguments> </referenceBlock> </body> </page>