diff --git a/core/lib/Drupal/Core/Form/FormCache.php b/core/lib/Drupal/Core/Form/FormCache.php
index ea38fd2..621bfca 100644
--- a/core/lib/Drupal/Core/Form/FormCache.php
+++ b/core/lib/Drupal/Core/Form/FormCache.php
@@ -26,6 +26,14 @@
 class FormCache implements FormCacheInterface {
 
   /**
+   * The default lifetime of the form's cache is set to 6 hours.
+   */
+  const CACHE_LIFETIME = 21600;
+
+  /**
+   *
+   */
+  /**
    * The factory for expirable key value stores used by form cache.
    *
    * @var \Drupal\Core\KeyValueStore\KeyValueExpirableFactoryInterface
@@ -188,8 +196,13 @@ protected function loadCachedFormState($form_build_id, FormStateInterface $form_
    * {@inheritdoc}
    */
   public function setCache($form_build_id, $form, FormStateInterface $form_state) {
-    // 6 hours cache life time for forms should be plenty.
-    $expire = 21600;
+    $system_form = $this->configFactory->get('system.form');
+    if (empty($system_form)) {
+      $expire = static::CACHE_LIFETIME;
+    }
+    else {
+      $expire = $system_form->get('cache_lifetime');
+    }
 
     // Ensure that the form build_id embedded in the form structure is the same
     // as the one passed in as a parameter. This is an additional safety measure
diff --git a/core/modules/system/config/install/system.form.yml b/core/modules/system/config/install/system.form.yml
new file mode 100644
index 0000000..9e2e584
--- /dev/null
+++ b/core/modules/system/config/install/system.form.yml
@@ -0,0 +1 @@
+cache_lifetime: 21600
diff --git a/core/modules/system/config/schema/system.schema.yml b/core/modules/system/config/schema/system.schema.yml
index a8d13fa..f571a25 100644
--- a/core/modules/system/config/schema/system.schema.yml
+++ b/core/modules/system/config/schema/system.schema.yml
@@ -143,6 +143,14 @@ system.filter:
         - type: string
           label: 'Protocol'
 
+system.form:
+  type: mapping
+  label: 'Form settings'
+  mapping:
+    cache_lifetime:
+      type: integer
+      label: 'Form cache lifetime'
+
 system.logging:
   type: mapping
   label: 'Logging settings'