diff --git a/.changeset/perfect-spies-cheat.md b/.changeset/perfect-spies-cheat.md
new file mode 100644
index 000000000..72cd76f17
--- /dev/null
+++ b/.changeset/perfect-spies-cheat.md
@@ -0,0 +1,5 @@
+---
+"@bigcommerce/catalyst-core": patch
+---
+
+Use amount and discount values for cart summary in Cart page
diff --git a/apps/core/app/[locale]/(default)/cart/_components/checkout-summary.tsx b/apps/core/app/[locale]/(default)/cart/_components/checkout-summary.tsx
index 62ad91004..c6425f9a3 100644
--- a/apps/core/app/[locale]/(default)/cart/_components/checkout-summary.tsx
+++ b/apps/core/app/[locale]/(default)/cart/_components/checkout-summary.tsx
@@ -127,7 +127,7 @@ export const CheckoutSummary = ({
       <div className="flex justify-between border-t border-t-gray-200 py-4">
         <span className="text-base font-semibold">{t('discounts')}</span>
         <span className="text-base">
-          {currencyFormatter.format(checkoutSummary.totalDiscountedAmount.value)}
+          -{currencyFormatter.format(checkoutSummary.discountedAmount.value)}
         </span>
       </div>
 
@@ -135,7 +135,7 @@ export const CheckoutSummary = ({
         <span className="text-h5">{t('grandTotal')}</span>
         <span className="text-h5">
           {currencyFormatter.format(
-            checkoutSummary.totalExtendedSalePrice.value +
+            checkoutSummary.amount.value +
               checkoutSummary.shippingCostTotal.value +
               checkoutSummary.handlingCostTotal.value,
           )}
diff --git a/apps/core/client/queries/get-cart.ts b/apps/core/client/queries/get-cart.ts
index 61fd695d8..52217e8f2 100644
--- a/apps/core/client/queries/get-cart.ts
+++ b/apps/core/client/queries/get-cart.ts
@@ -28,9 +28,6 @@ export const GET_CART_QUERY = /* GraphQL */ `
             extendedSalePrice {
               ...MoneyFields
             }
-            discountedAmount {
-              ...MoneyFields
-            }
             selectedOptions {
               __typename
               entityId
@@ -60,6 +57,12 @@ export const GET_CART_QUERY = /* GraphQL */ `
             }
           }
         }
+        amount {
+          ...MoneyFields
+        }
+        discountedAmount {
+          ...MoneyFields
+        }
       }
     }
   }
@@ -91,27 +94,11 @@ export const getCart = cache(async (cartId?: string) => {
     return acc + item.extendedListPrice.value;
   }, 0);
 
-  const totalDiscountedAmount = cart.lineItems.physicalItems.reduce((acc, item) => {
-    return acc + item.discountedAmount.value;
-  }, 0);
-
-  const totalExtendedSalePrice = cart.lineItems.physicalItems.reduce((acc, item) => {
-    return acc + item.extendedSalePrice.value;
-  }, 0);
-
   return {
     ...cart,
     totalExtendedListPrice: {
       currencyCode: cart.currencyCode,
       value: totalExtendedListPrice,
     },
-    totalDiscountedAmount: {
-      currencyCode: cart.currencyCode,
-      value: totalDiscountedAmount,
-    },
-    totalExtendedSalePrice: {
-      currencyCode: cart.currencyCode,
-      value: totalExtendedSalePrice,
-    },
   };
 });