diff --git a/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/order-summary-item.js b/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/order-summary-item.js
index d376e05e136..7ce9a95535f 100644
--- a/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/order-summary-item.js
+++ b/plugins/woocommerce-blocks/assets/js/base/components/cart-checkout/order-summary/order-summary-item.js
@@ -9,6 +9,7 @@ import { getCurrency } from '@woocommerce/price-format';
 import { __experimentalApplyCheckoutFilter } from '@woocommerce/blocks-checkout';
 import PropTypes from 'prop-types';
 import Dinero from 'dinero.js';
+import { DISPLAY_CART_PRICES_INCLUDING_TAX } from '@woocommerce/block-settings';
 
 /**
  * Internal dependencies
@@ -60,8 +61,13 @@ const OrderSummaryItem = ( { cartItem } ) => {
 		.convertPrecision( priceCurrency.minorUnit )
 		.getAmount();
 	const totalsCurrency = getCurrency( totals );
+
+	let lineTotal = parseInt( totals.line_total, 10 );
+	if ( DISPLAY_CART_PRICES_INCLUDING_TAX ) {
+		lineTotal += parseInt( totals.line_total_tax, 10 );
+	}
 	const totalsPrice = Dinero( {
-		amount: parseInt( totals.line_total, 10 ),
+		amount: lineTotal,
 	} )
 		.convertPrecision( totals.currency_minor_unit )
 		.getAmount();
diff --git a/plugins/woocommerce-blocks/assets/js/blocks/cart-checkout/cart/full-cart/cart-line-item-row.js b/plugins/woocommerce-blocks/assets/js/blocks/cart-checkout/cart/full-cart/cart-line-item-row.js
index 7d9db883297..66e29f58a50 100644
--- a/plugins/woocommerce-blocks/assets/js/blocks/cart-checkout/cart/full-cart/cart-line-item-row.js
+++ b/plugins/woocommerce-blocks/assets/js/blocks/cart-checkout/cart/full-cart/cart-line-item-row.js
@@ -18,6 +18,7 @@ import {
 import { getCurrency } from '@woocommerce/price-format';
 import { __experimentalApplyCheckoutFilter } from '@woocommerce/blocks-checkout';
 import Dinero from 'dinero.js';
+import { DISPLAY_CART_PRICES_INCLUDING_TAX } from '@woocommerce/block-settings';
 
 /**
  * @typedef {import('@woocommerce/type-defs/cart').CartItem} CartItem
@@ -81,6 +82,7 @@ const CartLineItemRow = ( { lineItem = {} } ) => {
 			currency_decimal_separator: '.',
 			currency_thousand_separator: ',',
 			line_total: '0',
+			line_total_tax: '0',
 		},
 		extensions,
 	} = lineItem;
@@ -117,8 +119,12 @@ const CartLineItemRow = ( { lineItem = {} } ) => {
 	);
 	const saleAmount = saleAmountSingle.multiply( quantity );
 	const totalsCurrency = getCurrency( totals );
+	let lineTotal = parseInt( totals.line_total, 10 );
+	if ( DISPLAY_CART_PRICES_INCLUDING_TAX ) {
+		lineTotal += parseInt( totals.line_total_tax, 10 );
+	}
 	const totalsPrice = Dinero( {
-		amount: parseInt( totals.line_total, 10 ),
+		amount: lineTotal,
 	} );
 
 	const firstImage = images.length ? images[ 0 ] : {};