diff --git a/app/controllers/check.controller.js b/app/controllers/check.controller.js
index 1420fb0ad8..f168a7914e 100644
--- a/app/controllers/check.controller.js
+++ b/app/controllers/check.controller.js
@@ -5,9 +5,36 @@
  * @module CheckController
  */
 
+const DetermineSupplementaryBillingFlagsService = require('../services/import/determine-supplementary-billing-flags.service.js')
 const ProcessLicenceReturnLogsService = require('../services/jobs/return-logs/process-licence-return-logs.service.js')
 
-const redirectStatusCode = 204
+const NO_CONTENT_STATUS_CODE = 204
+
+/**
+ * A test end point for the licence supplementary billing flags process
+ *
+ * This endpoint takes a licenceId and an expired, lapsed and revoked date. It passes this onto the
+ * `DetermineSupplementaryBillingFlagsService` to test if it correctly flags the licence for supplementary billing. This
+ * normally happens during the licence import process.
+ *
+ * @param request - the hapi request object
+ * @param h - the hapi response object
+ *
+ * @returns {Promise<object>} - A promise that resolves to an HTTP response object with a 204 status code
+ */
+async function flagForBilling (request, h) {
+  const { licenceId, expiredDate, lapsedDate, revokedDate } = request.payload
+
+  const transformedLicence = {
+    expiredDate,
+    lapsedDate,
+    revokedDate
+  }
+
+  await DetermineSupplementaryBillingFlagsService.go(transformedLicence, licenceId)
+
+  return h.response().code(NO_CONTENT_STATUS_CODE)
+}
 
 /**
  * A test end point to create return logs for a given licence reference
@@ -28,9 +55,10 @@ async function returnLogsForLicence (_request, h) {
 
   ProcessLicenceReturnLogsService.go(licenceReference)
 
-  return h.response().code(redirectStatusCode)
+  return h.response().code(NO_CONTENT_STATUS_CODE)
 }
 
 module.exports = {
+  flagForBilling,
   returnLogsForLicence
 }
diff --git a/app/routes/check.routes.js b/app/routes/check.routes.js
index 6aa6161519..599b123825 100644
--- a/app/routes/check.routes.js
+++ b/app/routes/check.routes.js
@@ -3,6 +3,21 @@
 const CheckController = require('../controllers/check.controller.js')
 
 const routes = [
+  {
+    method: 'POST',
+    path: '/check/flag-for-billing',
+    options: {
+      handler: CheckController.flagForBilling,
+      app: {
+        excludeFromProd: true,
+        plainOutput: true
+      },
+      auth: false,
+      plugins: {
+        crumb: false
+      }
+    }
+  },
   {
     method: 'POST',
     path: '/check/licence-return-logs',