diff --git a/changelog/fix-woopay-woocommerce-multicurrency-support b/changelog/fix-woopay-woocommerce-multicurrency-support
new file mode 100644
index 00000000000..d0caf0158b2
--- /dev/null
+++ b/changelog/fix-woopay-woocommerce-multicurrency-support
@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Add WooCommerce Multi-Currency support on WooPay.
diff --git a/includes/woopay/class-woopay-adapted-extensions.php b/includes/woopay/class-woopay-adapted-extensions.php
index b0d943d87bd..340af75bfab 100644
--- a/includes/woopay/class-woopay-adapted-extensions.php
+++ b/includes/woopay/class-woopay-adapted-extensions.php
@@ -155,6 +155,25 @@ public function get_gift_cards_data( $user ) {
 		return $gift_cards_script_data;
 	}
 
+	/**
+	 * The custom data from plugins to be used on WooPay,
+	 * it's not an adapted extension because it doesn't
+	 * use the email verification integration.
+	 *
+	 * @return array The custom data.
+	 */
+	public function get_extension_data() {
+		$extension_data = [];
+
+		if ( defined( 'WOOCOMMERCE_MULTICURRENCY_VERSION' ) ) {
+			$extension_data[ 'woocommerce-multicurrency' ] = [
+				'currency' => get_woocommerce_currency(),
+			];
+		}
+
+		return $extension_data;
+	}
+
 	/**
 	 * Get WC Blocks registered integrations.
 	 *
diff --git a/includes/woopay/class-woopay-session.php b/includes/woopay/class-woopay-session.php
index 6d374689f5b..f4ec84b3d15 100644
--- a/includes/woopay/class-woopay-session.php
+++ b/includes/woopay/class-woopay-session.php
@@ -384,13 +384,15 @@ private static function get_init_session_request( $order_id = null, $key = null,
 		remove_filter( 'woocommerce_store_api_disable_nonce_check', '__return_true' );
 		$checkout_data = isset( $preloaded_checkout_data['/wc/store/v1/checkout'] ) ? $preloaded_checkout_data['/wc/store/v1/checkout']['body'] : '';
 
+		$email = ! empty( $_POST['email'] ) ? wc_clean( wp_unslash( $_POST['email'] ) ) : '';
+
 		$request = [
 			'wcpay_version'        => WCPAY_VERSION_NUMBER,
 			'user_id'              => $user->ID,
 			'customer_id'          => $customer_id,
 			'session_nonce'        => self::create_woopay_nonce( $user->ID ),
 			'store_api_token'      => self::init_store_api_token(),
-			'email'                => '',
+			'email'                => $email,
 			'store_data'           => [
 				'store_name'                     => get_bloginfo( 'name' ),
 				'store_logo'                     => $store_logo,
@@ -423,6 +425,26 @@ private static function get_init_session_request( $order_id = null, $key = null,
 			'tracks_user_identity' => WC_Payments::woopay_tracker()->tracks_get_identity( $user->ID ),
 		];
 
+		$woopay_adapted_extensions  = new WooPay_Adapted_Extensions();
+		$request['extension_data']     = $woopay_adapted_extensions->get_extension_data();
+
+		if ( ! empty( $email ) ) {
+			// Save email in session to skip TYP verify email and check if
+			// WooPay verified email matches.
+			WC()->customer->set_billing_email( $email );
+			WC()->customer->save();
+
+			$request['adapted_extensions'] = $woopay_adapted_extensions->get_adapted_extensions_data( $email );
+
+			if ( ! is_user_logged_in() && count( $request['adapted_extensions'] ) > 0 ) {
+				$store_user_email_registered = get_user_by( 'email', $email );
+
+				if ( $store_user_email_registered ) {
+					$request['email_verified_session_nonce'] = self::create_woopay_nonce( $store_user_email_registered->ID );
+				}
+			}
+		}
+
 		return $request;
 	}
 
@@ -441,33 +463,13 @@ public static function ajax_init_woopay() {
 			);
 		}
 
-		$email         = ! empty( $_POST['email'] ) ? wc_clean( wp_unslash( $_POST['email'] ) ) : '';
 		$order_id      = ! empty( $_POST['order_id'] ) ? absint( wp_unslash( $_POST['order_id'] ) ) : null;
 		$key           = ! empty( $_POST['key'] ) ? sanitize_text_field( wp_unslash( $_POST['key'] ) ) : null;
 		$billing_email = ! empty( $_POST['billing_email'] ) ? sanitize_text_field( wp_unslash( $_POST['billing_email'] ) ) : null;
 
 		$body                 = self::get_init_session_request( $order_id, $key, $billing_email );
-		$body['email']        = $email;
 		$body['user_session'] = isset( $_REQUEST['user_session'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['user_session'] ) ) : null;
 
-		if ( ! empty( $email ) ) {
-			// Save email in session to skip TYP verify email and check if
-			// WooPay verified email matches.
-			WC()->customer->set_billing_email( $email );
-			WC()->customer->save();
-
-			$woopay_adapted_extensions  = new WooPay_Adapted_Extensions();
-			$body['adapted_extensions'] = $woopay_adapted_extensions->get_adapted_extensions_data( $email );
-
-			if ( ! is_user_logged_in() && count( $body['adapted_extensions'] ) > 0 ) {
-				$store_user_email_registered = get_user_by( 'email', $email );
-
-				if ( $store_user_email_registered ) {
-					$body['email_verified_session_nonce'] = self::create_woopay_nonce( $store_user_email_registered->ID );
-				}
-			}
-		}
-
 		$args = [
 			'url'     => WooPay_Utilities::get_woopay_rest_url( 'init' ),
 			'method'  => 'POST',
diff --git a/tests/unit/woopay/test-class-woopay-adapted-extensions.php b/tests/unit/woopay/test-class-woopay-adapted-extensions.php
index 02ad41b2fec..9144ea7ed31 100644
--- a/tests/unit/woopay/test-class-woopay-adapted-extensions.php
+++ b/tests/unit/woopay/test-class-woopay-adapted-extensions.php
@@ -139,4 +139,14 @@ public function test_get_gift_cards_data_while_logged_out_with_zero_balance() {
 
 		$this->assertEquals( $this->woopay_adapted_extensions->get_gift_cards_data( $this->test_user ), $expected );
 	}
+
+	public function test_get_extension_data_with_no_data() {
+		$this->assertEquals( $this->woopay_adapted_extensions->get_extension_data(), [] );
+	}
+
+	public function test_get_extension_data() {
+		define( 'WOOCOMMERCE_MULTICURRENCY_VERSION', '0.0.0' );
+
+		$this->assertEquals( $this->woopay_adapted_extensions->get_extension_data(), [ 'woocommerce-multicurrency' => [ 'currency' => 'USD' ] ] );
+	}
 }