diff --git a/src/Entities/Interfaces/RefreshTokenEntityInterface.php b/src/Entities/Interfaces/RefreshTokenEntityInterface.php
index a095d4a1..5b382754 100644
--- a/src/Entities/Interfaces/RefreshTokenEntityInterface.php
+++ b/src/Entities/Interfaces/RefreshTokenEntityInterface.php
@@ -39,4 +39,10 @@ interface RefreshTokenEntityInterface
      * @return \League\OAuth2\Server\Entities\Interfaces\AccessTokenEntityInterface
      */
     public function getAccessToken();
+
+    /**
+     * Has the token expired?
+     * @return bool
+     */
+    public function isExpired();
 }
diff --git a/src/Entities/Traits/RefreshTokenTrait.php b/src/Entities/Traits/RefreshTokenTrait.php
index 0e0a3500..b0e2a247 100644
--- a/src/Entities/Traits/RefreshTokenTrait.php
+++ b/src/Entities/Traits/RefreshTokenTrait.php
@@ -50,4 +50,13 @@ trait RefreshTokenTrait
     {
         $this->expiryDateTime = $dateTime;
     }
+
+    /**
+     * Has the token expired?
+     * @return bool
+     */
+    public function isExpired()
+    {
+        return (new DateTime()) > $this->getExpiryDateTime();
+    }
 }