diff --git a/webapp/models/Staking.php b/webapp/models/Staking.php
index d044b106..1dd64459 100644
--- a/webapp/models/Staking.php
+++ b/webapp/models/Staking.php
@@ -215,6 +215,13 @@ class Staking extends BaseModel {
         $dto['stacked_days'] = max(0, $passedDays);
         $dto['remain_days'] = max(0, $saveDays - $dto['stacked_days']);
         $dailyInterest = self::getDailyInterest($row['stake_time'], $dto['remain_days']);
+        if ($saveDays >= 30 * 12 * 2) {
+            if ($dto['remain_days'] < 30 * 12) {
+                $dailyInterest *= 0.6;
+            } else {
+                $dailyInterest *= 0.4;
+            }
+        }
         $dto['daily_rewards'] = $dto['cec_value'] * $dailyInterest;
         /*
         error_log(json_encode(array(