diff --git a/packages/core/src/Managers/DiscountManager.php b/packages/core/src/Managers/DiscountManager.php
index c562c98dd4..acc51d262c 100644
--- a/packages/core/src/Managers/DiscountManager.php
+++ b/packages/core/src/Managers/DiscountManager.php
@@ -122,6 +122,10 @@ public function getDiscounts(?Cart $cart = null): Collection
             $this->channel($defaultChannel);
         }
 
+        if ($cart && $customerGroups = $cart->customer?->customerGroups) {
+            $this->customerGroup($customerGroups);
+        }
+
         if ($this->customerGroups->isEmpty() && $defaultGroup = CustomerGroup::getDefault()) {
             $this->customerGroup($defaultGroup);
         }