diff --git a/app/Http/Requests/Payment/StorePaymentRequest.php b/app/Http/Requests/Payment/StorePaymentRequest.php
index 34bba9f648af..ee25c509e629 100644
--- a/app/Http/Requests/Payment/StorePaymentRequest.php
+++ b/app/Http/Requests/Payment/StorePaymentRequest.php
@@ -11,6 +11,7 @@
 
 namespace App\Http\Requests\Payment;
 
+use App\Exceptions\DuplicatePaymentException;
 use App\Http\Requests\Request;
 use App\Http\ValidationRules\Credit\CreditsSumRule;
 use App\Http\ValidationRules\Credit\ValidCreditsRules;
@@ -78,7 +79,13 @@ class StorePaymentRequest extends Request
 
         /** @var \App\Models\User $user */
         $user = auth()->user();
+        
 
+        if(\Illuminate\Support\Facades\Cache::has($this->ip()."|".$this->input('amount', 0)."|".$this->input('client_id', '')."|".$user->company()->company_key))
+            throw new DuplicatePaymentException('Duplicate request.', 429);
+
+        \Illuminate\Support\Facades\Cache::put(($this->ip()."|".$this->input('amount', 0)."|".$this->input('client_id', '')."|".$user->company()->company_key), true, 1);
+        
         $input = $this->all();
 
         $invoices_total = 0;
diff --git a/app/Providers/RouteServiceProvider.php b/app/Providers/RouteServiceProvider.php
index e4a9f010050b..ab1b40ca2ed2 100644
--- a/app/Providers/RouteServiceProvider.php
+++ b/app/Providers/RouteServiceProvider.php
@@ -92,8 +92,7 @@ class RouteServiceProvider extends ServiceProvider
         RateLimiter::for('portal', function (Request $request) {
             return Limit::perMinute(15)->by($request->ip());
         });
-
-
+        
     }
 
     /**
diff --git a/tests/Feature/PaymentTest.php b/tests/Feature/PaymentTest.php
index 696bf0b937e2..513a331df231 100644
--- a/tests/Feature/PaymentTest.php
+++ b/tests/Feature/PaymentTest.php
@@ -75,6 +75,7 @@ class PaymentTest extends TestCase
                 ],
             ],
             'date' => '2020/12/11',
+            'idempotency_key' => 'xx',
         ];
 
         $response = $this->withHeaders([
@@ -83,7 +84,9 @@ class PaymentTest extends TestCase
         ])->postJson('/api/v1/payments/', $data);
 
         $response->assertStatus(200);
-                
+        
+        sleep(1);
+
         $response = $this->withHeaders([
             'X-API-SECRET' => config('ninja.api_secret'),
             'X-API-TOKEN' => $this->token,
@@ -1877,6 +1880,8 @@ class PaymentTest extends TestCase
 
         $response->assertStatus(200);
 
+sleep(1);
+
         $response = $this->withHeaders([
             'X-API-SECRET' => config('ninja.api_secret'),
             'X-API-TOKEN' => $this->token,