diff --git a/addons/payment_alipay/models/payment_transaction.py b/addons/payment_alipay/models/payment_transaction.py
index 6ba77737a8b..10ebd9003a6 100644
--- a/addons/payment_alipay/models/payment_transaction.py
+++ b/addons/payment_alipay/models/payment_transaction.py
@@ -44,7 +44,7 @@ class PaymentTransaction(models.Model):
             'partner': self.provider_id.alipay_merchant_partner_id,
             'return_url': urls.url_join(base_url, AlipayController._return_url),
             'subject': self.reference,
-            'total_fee': total_fee,
+            'total_fee': f'{total_fee:.2f}',
         }
         if self.provider_id.alipay_payment_method == 'standard_checkout':
             # https://global.alipay.com/docs/ac/global/create_forex_trade
diff --git a/addons/payment_alipay/tests/test_alipay.py b/addons/payment_alipay/tests/test_alipay.py
index 26a37f57ceb..d081efeac3d 100644
--- a/addons/payment_alipay/tests/test_alipay.py
+++ b/addons/payment_alipay/tests/test_alipay.py
@@ -118,7 +118,7 @@ class AlipayTest(AlipayCommon, PaymentHttpCommon):
             processing_values = tx._get_processing_values()
         redirect_form_data = self._extract_values_from_html_form(processing_values['redirect_form_html'])
 
-        self.assertEqual(redirect_form_data['inputs']['total_fee'], str(total_fee))
+        self.assertEqual(redirect_form_data['inputs']['total_fee'], f'{total_fee:.2f}')
 
     def test_21_standard_checkout_feedback(self):
         self.alipay.alipay_payment_method = 'standard_checkout'