diff --git a/modules/ppcp-settings/resources/js/data/common/constants.js b/modules/ppcp-settings/resources/js/data/common/constants.js
index 4ec4ad20d..60d8512fa 100644
--- a/modules/ppcp-settings/resources/js/data/common/constants.js
+++ b/modules/ppcp-settings/resources/js/data/common/constants.js
@@ -8,7 +8,7 @@
 export const STORE_NAME = 'wc/paypal/common';
 
 /**
- * REST path to hydrate data of this module by loading data from the WP DB..
+ * REST path to hydrate data of this module by loading data from the WP DB.
  *
  * Used by resolvers.
  *
diff --git a/modules/ppcp-settings/resources/js/data/common/reducer.js b/modules/ppcp-settings/resources/js/data/common/reducer.js
index 63c231f85..cca47ac6f 100644
--- a/modules/ppcp-settings/resources/js/data/common/reducer.js
+++ b/modules/ppcp-settings/resources/js/data/common/reducer.js
@@ -17,6 +17,13 @@ const defaultTransient = {
 	activities: new Map(),
 
 	// Read only values, provided by the server via hydrate.
+	merchant: {
+		isConnected: false,
+		isSandbox: false,
+		id: '',
+		email: '',
+	},
+
 	wooSettings: {
 		storeCountry: '',
 		storeCurrency: '',
@@ -75,12 +82,17 @@ const commonReducer = createReducer( defaultTransient, defaultPersistent, {
 	[ ACTION_TYPES.HYDRATE ]: ( state, payload ) => {
 		const newState = setPersistent( state, payload.data );
 
-		if ( payload.wooSettings ) {
-			newState.wooSettings = {
-				...newState.wooSettings,
-				...payload.wooSettings,
-			};
-		}
+		// Populate read-only properties.
+		[ 'wooSettings', 'merchant' ].forEach( ( key ) => {
+			if ( ! payload[ key ] ) {
+				return;
+			}
+
+			newState[ key ] = Object.freeze( {
+				...newState[ key ],
+				...payload[ key ],
+			} );
+		} );
 
 		return newState;
 	},
diff --git a/modules/ppcp-settings/resources/js/data/common/selectors.js b/modules/ppcp-settings/resources/js/data/common/selectors.js
index 17e422b7a..30d513784 100644
--- a/modules/ppcp-settings/resources/js/data/common/selectors.js
+++ b/modules/ppcp-settings/resources/js/data/common/selectors.js
@@ -16,7 +16,8 @@ export const persistentData = ( state ) => {
 };
 
 export const transientData = ( state ) => {
-	const { data, wooSettings, ...transientState } = getState( state );
+	const { data, merchant, wooSettings, ...transientState } =
+		getState( state );
 	return transientState || EMPTY_OBJ;
 };
 
diff --git a/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php b/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
index 62ee44ff7..b6fe29d4a 100644
--- a/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
+++ b/modules/ppcp-settings/src/Endpoint/CommonRestEndpoint.php
@@ -61,7 +61,27 @@ class CommonRestEndpoint extends RestEndpoint {
 	);
 
 	/**
-	 * Map the internal flags to JS names.
+	 * Map merchant details to JS names.
+	 *
+	 * @var array
+	 */
+	private array $merchant_info_map = array(
+		'merchant_connected' => array(
+			'js_name' => 'isConnected',
+		),
+		'sandbox_merchant'   => array(
+			'js_name' => 'isSandbox',
+		),
+		'merchant_id'        => array(
+			'js_name' => 'id',
+		),
+		'merchant_email'     => array(
+			'js_name' => 'email',
+		),
+	);
+
+	/**
+	 * Map woo-settings to JS names.
 	 *
 	 * @var array
 	 */
@@ -124,6 +144,7 @@ class CommonRestEndpoint extends RestEndpoint {
 		);
 
 		$extra_data = $this->add_woo_settings( array() );
+		$extra_data = $this->add_merchant_info( $extra_data );
 
 		return $this->return_success( $js_data, $extra_data );
 	}
@@ -147,6 +168,23 @@ class CommonRestEndpoint extends RestEndpoint {
 		return $this->get_details();
 	}
 
+	/**
+	 * Appends the "merchant" attribute to the extra_data collection, which
+	 * contains details about the merchant's PayPal account, like the merchant ID.
+	 *
+	 * @param array $extra_data Initial extra_data collection.
+	 *
+	 * @return array Updated extra_data collection.
+	 */
+	protected function add_merchant_info( array $extra_data ) : array {
+		$extra_data['merchant'] = $this->sanitize_for_javascript(
+			$this->settings->to_array(),
+			$this->merchant_info_map
+		);
+
+		return $extra_data;
+	}
+
 	/**
 	 * Appends the "wooSettings" attribute to the extra_data collection to
 	 * provide WooCommerce store details, like the store country and currency.