diff --git a/src/Form/EntityInlineForm.php b/src/Form/EntityInlineForm.php
index 4dae436..5229906 100644
--- a/src/Form/EntityInlineForm.php
+++ b/src/Form/EntityInlineForm.php
@@ -8,10 +8,13 @@ use Drupal\Core\Entity\EntityInterface;
 use Drupal\Core\Entity\EntityFieldManagerInterface;
 use Drupal\Core\Entity\EntityTypeInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Entity\RevisionableInterface;
+use Drupal\Core\Entity\RevisionLogInterface;
 use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Field\WidgetBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\inline_entity_form\InlineFormInterface;
+use Drupal\node\NodeInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -285,4 +288,47 @@ class EntityInlineForm implements InlineFormInterface {
     return EntityFormDisplay::collectRenderDisplay($entity, $form_mode);
   }
 
+  /**
+   * Determines wheter we should save a new revision.
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The entity.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The form state.
+   *
+   * @return bool
+   */
+  protected function hasNewRevision(EntityInterface $entity, FormStateInterface $form_state) {
+    $new_revision = FALSE;
+    if ($entity instanceof RevisionableInterface && $entity->getEntityType()->isRevisionable()) {
+      if ($entity->isNewRevision()) {
+        $new_revision = TRUE;
+      }
+
+      // Most of the time we don't know yet if the host entity is going to be
+      // saved as a new revision using RevisionableInterface::isNewRevision().
+      // Most entity types (at least nodes) however use a boolean property named
+      // "revision" to indicate whether a new revision should be saved. Use that
+      // property.
+      elseif ($entity->getEntityType()->hasKey('revision') && $form_state->getValue('revision')) {
+        $new_revision = TRUE;
+      }
+    }
+    return $new_revision;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function widgetSubmit($entity, $form, $form_state) {
+    if ($this->hasNewRevision($entity, $form_state) && $entity instanceof RevisionableInterface) {
+      $entity->setNewRevision();
+      if ($entity instanceof RevisionLogInterface) {
+        // If a new revision is created, save the current user as revision author.
+        $entity->setRevisionUserId(\Drupal::currentUser()->id());
+        $entity->setRevisionCreationTime(REQUEST_TIME);
+      }
+    }
+  }
+
 }
diff --git a/src/Form/NodeInlineForm.php b/src/Form/NodeInlineForm.php
index 4f6c377..1ab5a9c 100644
--- a/src/Form/NodeInlineForm.php
+++ b/src/Form/NodeInlineForm.php
@@ -2,8 +2,10 @@
 
 namespace Drupal\inline_entity_form\Form;
 
+use Drupal\Core\Entity\RevisionableInterface;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
+use Drupal\node\NodeInterface;
 
 /**
  * Node inline form handler.
@@ -57,4 +59,18 @@ class NodeInlineForm extends EntityInlineForm {
     return $entity_form;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function widgetSubmit($entity, $form, $form_state) {
+    if ($this->hasNewRevision($entity, $form_state) && $entity instanceof RevisionableInterface) {
+      $entity->setNewRevision();
+      if ($entity instanceof NodeInterface) {
+        $entity->setRevisionCreationTime(REQUEST_TIME);
+        // If a new revision is created, save the current user as revision author.
+        $entity->setRevisionAuthorId(\Drupal::currentUser()->id());
+      }
+    }
+  }
+
 }
diff --git a/src/InlineFormInterface.php b/src/InlineFormInterface.php
index c663602..2e3d395 100644
--- a/src/InlineFormInterface.php
+++ b/src/InlineFormInterface.php
@@ -126,4 +126,18 @@ interface InlineFormInterface extends EntityHandlerInterface {
    */
   public function delete($ids, $context);
 
+  /**
+   * Submits the widget.
+   *
+   * This method is executed before ::save().
+   *
+   * @param \Drupal\Core\Entity\EntityInterface $entity
+   *   The entity.
+   * @param array $form
+   *   The entity form.
+   * @param \Drupal\Core\Form\FormStateInterface $form_state
+   *   The form state of the parent form.
+   */
+  public function widgetSubmit($entity, $form, $form_state);
+
 }
diff --git a/src/WidgetSubmit.php b/src/WidgetSubmit.php
index 42f1c51..ddbe134 100644
--- a/src/WidgetSubmit.php
+++ b/src/WidgetSubmit.php
@@ -49,19 +49,8 @@ class WidgetSubmit {
           /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
           $entity = $entity_item['entity'];
           $handler = InlineEntityForm::getInlineFormHandler($entity->getEntityTypeId());
-          if ($entity instanceof RevisionableInterface && $entity->getEntityType()->isRevisionable()) {
-            $entity->setNewRevision();
-            if ($entity instanceof NodeInterface) {
-              $entity->setRevisionCreationTime(REQUEST_TIME);
-              // If a new revision is created, save the current user as revision author.
-              $entity->setRevisionAuthorId(\Drupal::currentUser()->id());
-            }
-            elseif ($entity instanceof RevisionLogInterface) {
-              // If a new revision is created, save the current user as revision author.
-              $entity->setRevisionUserId(\Drupal::currentUser()->id());
-              $entity->setRevisionCreationTime(REQUEST_TIME);
-            }
-          }
+
+          $handler->widgetSubmit($entity, $form, $form_state);
           $handler->save($entity);
           $widget_state['entities'][$delta]['needs_save'] = FALSE;
         }