diff --git a/infra/deployments/forms/forms-runner/main.tf b/infra/deployments/forms/forms-runner/main.tf
index 89649d361..53d828d1b 100644
--- a/infra/deployments/forms/forms-runner/main.tf
+++ b/infra/deployments/forms/forms-runner/main.tf
@@ -46,6 +46,7 @@ module "forms_runner" {
   api_base_url                                       = "http://admin.internal.${var.root_domain}"
   admin_base_url                                     = "https://admin.${var.root_domain}"
   product_page_base_url                              = "https://${var.root_domain}"
+  runner_base_url                                    = "https://submit.${var.root_domain}"
   enable_maintenance_mode                            = var.forms_runner_settings.enable_maintenance_mode
   cloudwatch_metrics_enabled                         = var.forms_runner_settings.cloudwatch_metrics_enabled
   analytics_enabled                                  = var.forms_runner_settings.analytics_enabled
diff --git a/infra/modules/forms-runner/main.tf b/infra/modules/forms-runner/main.tf
index ea74d459c..fc91d5402 100644
--- a/infra/modules/forms-runner/main.tf
+++ b/infra/modules/forms-runner/main.tf
@@ -138,6 +138,10 @@ module "ecs_service" {
       name  = "SETTINGS__FORMS_PRODUCT_PAGE__BASE_URL",
       value = var.product_page_base_url
     },
+    {
+      name  = "SETTINGS__FORMS_RUNNER__BASE_URL",
+      value = var.runner_base_url
+    },
     {
       name  = "RACK_ENV",
       value = "production"
diff --git a/infra/modules/forms-runner/variables.tf b/infra/modules/forms-runner/variables.tf
index 01dfcd4f6..98cc6ce2e 100644
--- a/infra/modules/forms-runner/variables.tf
+++ b/infra/modules/forms-runner/variables.tf
@@ -41,6 +41,11 @@ variable "api_base_url" {
   description = "The url for connecting to forms-admin"
 }
 
+variable "runner_base_url" {
+  type        = string
+  description = "The public base url of forms-runner"
+}
+
 variable "enable_maintenance_mode" {
   type        = bool
   description = "Controls whether the maintenance page is shown"