diff --git a/changelog/account-migration-feature b/changelog/account-migration-feature
new file mode 100644
index 00000000000..673d2362b31
--- /dev/null
+++ b/changelog/account-migration-feature
@@ -0,0 +1,4 @@
+Significance: minor
+Type: add
+
+Make it possible to migrate a test account to a live account
diff --git a/includes/admin/class-wc-rest-payments-onboarding-controller.php b/includes/admin/class-wc-rest-payments-onboarding-controller.php
index 9062e43283f..6df13680dff 100644
--- a/includes/admin/class-wc-rest-payments-onboarding-controller.php
+++ b/includes/admin/class-wc-rest-payments-onboarding-controller.php
@@ -97,6 +97,12 @@ public function register_routes() {
 							],
 						],
 					],
+					'migrate_to_live' => [
+						'required'    => false,
+						'description' => 'Whether to migrate the account to live.',
+						'type'        => 'boolean',
+						'default'     => false,
+					],
 				],
 			]
 		);
@@ -227,11 +233,13 @@ public function create_embedded_kyc_session( WP_REST_Request $request ) {
 		$self_assessment_data = ! empty( $request->get_param( 'self_assessment' ) ) ? wc_clean( wp_unslash( $request->get_param( 'self_assessment' ) ) ) : [];
 		$progressive          = ! empty( $request->get_param( 'progressive' ) ) && filter_var( $request->get_param( 'progressive' ), FILTER_VALIDATE_BOOLEAN );
 		$capabilities         = ! empty( $request->get_param( 'capabilities' ) ) ? wc_clean( wp_unslash( $request->get_param( 'capabilities' ) ) ) : [];
+		$migrate_to_live      = ! empty( $request->get_param( 'migrate_to_live' ) ) && filter_var( $request->get_param( 'migrate_to_live' ), FILTER_VALIDATE_BOOLEAN );
 
 		$account_session = $this->onboarding_service->create_embedded_kyc_session(
 			$self_assessment_data,
 			$progressive,
-			$capabilities
+			$capabilities,
+			$migrate_to_live
 		);
 
 		if ( $account_session ) {
diff --git a/includes/class-wc-payments-account.php b/includes/class-wc-payments-account.php
index d3320a59071..c9836fa1da7 100644
--- a/includes/class-wc-payments-account.php
+++ b/includes/class-wc-payments-account.php
@@ -2327,6 +2327,12 @@ public function get_cached_account_data( bool $force_refresh = false ) {
 			return [];
 		}
 
+		// Check if there's an ongoing migration to live payments.
+		if ( $this->onboarding_service->is_onboarding_init_in_progress() ) {
+			// Return empty array to indicate no account is connected yet.
+			return [];
+		}
+
 		$refreshed = false;
 
 		$account = $this->database_cache->get_or_add(
diff --git a/includes/class-wc-payments-onboarding-service.php b/includes/class-wc-payments-onboarding-service.php
index 33c81b9e642..aa69d6081da 100644
--- a/includes/class-wc-payments-onboarding-service.php
+++ b/includes/class-wc-payments-onboarding-service.php
@@ -281,12 +281,13 @@ public function should_enable_woopay( bool $default_value, array $capabilities )
 	 * @param array   $capabilities Optional. List keyed by capabilities IDs (payment methods) with boolean values
 	 *                             indicating whether the capability should be requested when the account is created
 	 *                             and enabled in the settings.
+	 * @param bool    $migrate_to_live Whether to migrate the account to live.
 	 *
 	 * @return array Session data.
 	 *
 	 * @throws API_Exception|Exception
 	 */
-	public function create_embedded_kyc_session( array $self_assessment_data, bool $progressive = false, array $capabilities = [] ): array {
+	public function create_embedded_kyc_session( array $self_assessment_data, bool $progressive = false, array $capabilities = [], bool $migrate_to_live = false ): array {
 		if ( ! $this->payments_api_client->is_server_connected() ) {
 			return [];
 		}
@@ -339,7 +340,8 @@ public function create_embedded_kyc_session( array $self_assessment_data, bool $
 				WC_Payments_Utils::array_filter_recursive( $account_data ), // nosemgrep: audit.php.lang.misc.array-filter-no-callback -- output of array_filter is escaped.
 				$actioned_notes,
 				$progressive,
-				$this->get_referral_code()
+				$this->get_referral_code(),
+				$migrate_to_live
 			);
 		} catch ( API_Exception $e ) {
 			$this->clear_onboarding_init_in_progress();
diff --git a/includes/wc-payment-api/class-wc-payments-api-client.php b/includes/wc-payment-api/class-wc-payments-api-client.php
index 9d1233bd0e9..327c2fba1d1 100644
--- a/includes/wc-payment-api/class-wc-payments-api-client.php
+++ b/includes/wc-payment-api/class-wc-payments-api-client.php
@@ -1095,6 +1095,7 @@ public function get_onboarding_data(
 	 * @param array   $actioned_notes Actioned notes to be sent.
 	 * @param bool    $progressive Whether progressive onboarding should be enabled for this onboarding.
 	 * @param ?string $referral_code Referral code to be used for onboarding.
+	 * @param ?bool   $migrate_to_live Whether to migrate the account to live.
 	 *
 	 * @return array
 	 *
@@ -1107,7 +1108,8 @@ public function initialize_onboarding_embedded_kyc(
 		array $account_data = [],
 		array $actioned_notes = [],
 		bool $progressive = false,
-		?string $referral_code = null
+		?string $referral_code = null,
+		?bool $migrate_to_live = false
 	): array {
 		$request_args = apply_filters(
 			'wc_payments_get_onboarding_data_args',
@@ -1118,6 +1120,7 @@ public function initialize_onboarding_embedded_kyc(
 				'actioned_notes'      => $actioned_notes,
 				'create_live_account' => $live_account,
 				'progressive'         => $progressive,
+				'migrate_to_live'     => $migrate_to_live,
 			]
 		);
 
diff --git a/tests/unit/test-class-wc-payments-account.php b/tests/unit/test-class-wc-payments-account.php
index 7d42386e11f..bbdf887a345 100644
--- a/tests/unit/test-class-wc-payments-account.php
+++ b/tests/unit/test-class-wc-payments-account.php
@@ -1154,7 +1154,7 @@ public function test_maybe_handle_onboarding_init_stripe_onboarding_another_onbo
 
 		// There is another onboarding started.
 		$this->mock_onboarding_service
-			->expects( $this->once() )
+			->expects( $this->atLeastOnce() )
 			->method( 'is_onboarding_init_in_progress' )
 			->willReturn( true );
 
diff --git a/tests/unit/test-class-wc-payments-onboarding-service.php b/tests/unit/test-class-wc-payments-onboarding-service.php
index d65bb02653d..d03eea595c6 100644
--- a/tests/unit/test-class-wc-payments-onboarding-service.php
+++ b/tests/unit/test-class-wc-payments-onboarding-service.php
@@ -31,14 +31,14 @@ class WC_Payments_Onboarding_Service_Test extends WCPAY_UnitTestCase {
 	/**
 	 * Mock Database_Cache
 	 *
-	 * @var MockObject
+	 * @var Database_Cache|MockObject
 	 */
 	private $mock_database_cache;
 
 	/**
 	 * Mock WC_Payments_Session_Service
 	 *
-	 * @var MockObject
+	 * @var WC_Payments_Session_Service|MockObject
 	 */
 	private $mock_session_service;