diff --git a/controllers/AccountThresholdController.php b/controllers/AccountThresholdController.php
new file mode 100644
index 0000000..0eb2f6f
--- /dev/null
+++ b/controllers/AccountThresholdController.php
@@ -0,0 +1,91 @@
+<?php
+
+namespace app\controllers;
+
+use Yii;
+use app\models\Account;
+use app\models\AccountThreshold;
+use yii\web\Controller;
+use yii\web\NotFoundHttpException;
+use yii\web\Response;
+use yii\widgets\ActiveForm;
+use yii\helpers\Url;
+
+class AccountThresholdController extends Controller
+{
+    public function actionIndex($account_id)
+    {
+        $account = $this->findAccount($account_id);
+        return $this->render('index', [
+            'account' => $account,
+        ]);
+    }
+
+    public function actionCreate($account_id)
+    {
+        $account = $this->findAccount($account_id);
+        $model = new AccountThreshold(['account_id' => $account->id]);
+
+        if ($model->load(Yii::$app->request->post()) && $model->save()) {
+            $account->refresh();
+            $account->checkAndSendNotifications();
+            Yii::$app->session->setFlash('success', 'Порог добавлен');
+            return $this->redirect(['index', 'account_id' => $account->id]);
+        }
+
+        return $this->render('create', ['model' => $model]);
+    }
+
+    public function actionUpdate($account_id, $id)
+    {
+        $account = $this->findAccount($account_id);
+        $threshold = $this->findThreshold($id);
+
+        if ($threshold->account_id != $account->id) {
+            throw new NotFoundHttpException('Данный порог не принадлежит аккаунту');
+        }
+
+        if ($threshold->load(Yii::$app->request->post()) && $threshold->save()) {
+            $account->refresh();
+            $account->checkAndSendNotifications();
+            Yii::$app->session->setFlash('success', 'Порог обновлен');
+            return $this->redirect(['index', 'account_id' => $account->id]);
+        }
+
+        return $this->render('update', ['model' => $threshold]);
+    }
+
+    public function actionDelete($account_id, $id)
+    {
+        $account = $this->findAccount($account_id);
+        $threshold = $this->findThreshold($id);
+
+        if ($threshold->account_id != $account->id) {
+            throw new NotFoundHttpException('Данный порог не принадлежит аккаунту');
+        }
+
+        $threshold->delete();
+        $account->refresh();
+        $account->checkAndSendNotifications();
+
+        Yii::$app->session->setFlash('success', 'Порог удален');
+        return $this->redirect(['index', 'account_id' => $account->id]);
+    }
+
+    // Вспомогательные методы
+    protected function findAccount($id)
+    {
+        if (($model = Account::findOne($id)) !== null) {
+            return $model;
+        }
+        throw new NotFoundHttpException('Аккаунт не найден');
+    }
+
+    protected function findThreshold($id)
+    {
+        if (($model = AccountThreshold::findOne($id)) !== null) {
+            return $model;
+        }
+        throw new NotFoundHttpException('Порог не найден');
+    }
+}
\ No newline at end of file