diff --git a/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/style.scss b/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/style.scss
index 180d0d462c1..119668b534f 100644
--- a/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/style.scss
+++ b/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/style.scss
@@ -1,6 +1,8 @@
 .wc-block-components-order-summary {
-	// Compensate for removing Panel.
-	padding: 0 $gap;
+	&.is-large {
+		// Compensate for removing Panel.
+		padding: 0 $gap;
+	}
 
 	.wc-block-components-order-summary__button-text {
 		font-weight: 500;
@@ -113,14 +115,3 @@
 		padding-top: $gap-smaller;
 	}
 }
-
-.is-medium,
-.is-small,
-.is-mobile {
-	.wp-block-woocommerce-checkout-order-summary-block {
-		.wc-block-components-totals-wrapper {
-			padding-left: $gap-small;
-			padding-right: $gap-small;
-		}
-	}
-}
diff --git a/plugins/woocommerce-blocks/assets/js/blocks/checkout/inner-blocks/checkout-order-summary-block/style.scss b/plugins/woocommerce-blocks/assets/js/blocks/checkout/inner-blocks/checkout-order-summary-block/style.scss
index c1d248f4220..723065632d5 100644
--- a/plugins/woocommerce-blocks/assets/js/blocks/checkout/inner-blocks/checkout-order-summary-block/style.scss
+++ b/plugins/woocommerce-blocks/assets/js/blocks/checkout/inner-blocks/checkout-order-summary-block/style.scss
@@ -2,6 +2,12 @@
 	border: 1px solid $universal-border-light;
 	border-radius: 5px;
 
+	&.checkout-order-summary-block-fill-wrapper {
+		.wc-block-components-order-summary {
+			padding: 0 $gap;
+		}
+	}
+
 	.wc-block-components-formatted-money-amount {
 		font-weight: 600;
 	}
diff --git a/plugins/woocommerce/changelog/52604-dev-alignment-on-mobile-order-summary-48899 b/plugins/woocommerce/changelog/52604-dev-alignment-on-mobile-order-summary-48899
new file mode 100644
index 00000000000..26cc2aaaa40
--- /dev/null
+++ b/plugins/woocommerce/changelog/52604-dev-alignment-on-mobile-order-summary-48899
@@ -0,0 +1,4 @@
+Significance: minor
+Type: tweak
+
+Adjust paddings on top of page order summary to better align on mobile.
\ No newline at end of file