diff --git a/changelog/fix-9806-ECE-subscription-checkout-signed-out b/changelog/fix-9806-ECE-subscription-checkout-signed-out
new file mode 100644
index 00000000000..fa25afd1f10
--- /dev/null
+++ b/changelog/fix-9806-ECE-subscription-checkout-signed-out
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Ensure ECE login confirmation dialog is shown on Blocks.
diff --git a/client/express-checkout/blocks/hooks/use-express-checkout.js b/client/express-checkout/blocks/hooks/use-express-checkout.js
index 962f74e5876..e2d68bc6bce 100644
--- a/client/express-checkout/blocks/hooks/use-express-checkout.js
+++ b/client/express-checkout/blocks/hooks/use-express-checkout.js
@@ -8,6 +8,7 @@ import { useStripe, useElements } from '@stripe/react-stripe-js';
  * Internal dependencies
  */
 import {
+	displayLoginConfirmation,
 	getExpressCheckoutButtonStyleSettings,
 	getExpressCheckoutData,
 	normalizeLineItems,
@@ -52,6 +53,12 @@ export const useExpressCheckout = ( {
 
 	const onButtonClick = useCallback(
 		( event ) => {
+			// If login is required for checkout, display redirect confirmation dialog.
+			if ( getExpressCheckoutData( 'login_confirmation' ) ) {
+				displayLoginConfirmation( event.expressPaymentType );
+				return;
+			}
+
 			const options = {
 				lineItems: normalizeLineItems( billing?.cartTotalItems ),
 				emailRequired: true,
diff --git a/client/tokenized-express-checkout/blocks/hooks/use-express-checkout.js b/client/tokenized-express-checkout/blocks/hooks/use-express-checkout.js
index f33604354f7..afdcca3f6d2 100644
--- a/client/tokenized-express-checkout/blocks/hooks/use-express-checkout.js
+++ b/client/tokenized-express-checkout/blocks/hooks/use-express-checkout.js
@@ -8,6 +8,7 @@ import { useStripe, useElements } from '@stripe/react-stripe-js';
  * Internal dependencies
  */
 import {
+	displayLoginConfirmation,
 	getExpressCheckoutButtonStyleSettings,
 	getExpressCheckoutData,
 	normalizeLineItems,
@@ -52,6 +53,12 @@ export const useExpressCheckout = ( {
 
 	const onButtonClick = useCallback(
 		( event ) => {
+			// If login is required for checkout, display redirect confirmation dialog.
+			if ( getExpressCheckoutData( 'login_confirmation' ) ) {
+				displayLoginConfirmation( event.expressPaymentType );
+				return;
+			}
+
 			const options = {
 				lineItems: normalizeLineItems( billing?.cartTotalItems ),
 				emailRequired: true,