diff --git a/src/nile/core/account.py b/src/nile/core/account.py
index 69861198..ed37bf08 100644
--- a/src/nile/core/account.py
+++ b/src/nile/core/account.py
@@ -135,7 +135,13 @@ def deploy_contract(
         )
 
     def send(
-        self, address_or_alias, method, calldata, max_fee, nonce=None, query_type=None
+        self,
+        address_or_alias,
+        method,
+        calldata,
+        max_fee=None,
+        nonce=None,
+        query_type=None,
     ):
         """Execute a query or invoke call for a tx going through an Account contract."""
         # get target address with the right format
@@ -166,11 +172,13 @@ def send(
             query_flag=query_type,
         )
 
-    def simulate(self, address_or_alias, method, calldata, max_fee, nonce=None):
+    def simulate(self, address_or_alias, method, calldata, max_fee=None, nonce=None):
         """Simulate a tx going through an Account contract."""
         return self.send(address_or_alias, method, calldata, max_fee, nonce, "simulate")
 
-    def estimate_fee(self, address_or_alias, method, calldata, max_fee, nonce=None):
+    def estimate_fee(
+        self, address_or_alias, method, calldata, max_fee=None, nonce=None
+    ):
         """Estimate fee for a tx going through an Account contract."""
         return self.send(
             address_or_alias, method, calldata, max_fee, nonce, "estimate_fee"
diff --git a/tests/commands/test_account.py b/tests/commands/test_account.py
index 080b671d..b1968779 100644
--- a/tests/commands/test_account.py
+++ b/tests/commands/test_account.py
@@ -179,16 +179,55 @@ def test_send_sign_transaction_and_execute(mock_target_address, mock_deploy):
         )
 
 
+@patch("nile.core.account.deploy", return_value=(MOCK_ADDRESS, MOCK_INDEX))
+@patch(
+    "nile.core.account.Account._get_target_address", return_value=MOCK_TARGET_ADDRESS
+)
+@patch("nile.core.account.get_nonce", return_value=0)
+@patch("nile.core.account.call_or_invoke")
+def test_send_defaults(mock_call, mock_nonce, mock_target_address, mock_deploy):
+    account = Account(KEY, NETWORK)
+
+    send_args = [MOCK_TARGET_ADDRESS, "method", [1, 2, 3]]
+    calldata = ["111", "222", "333"]
+    sig_r, sig_s = [999, 888]
+    return_signature = [calldata, sig_r, sig_s]
+
+    # Mock sign_transaction
+    account.signer.sign_transaction = MagicMock(return_value=return_signature)
+
+    account.send(account.address, "method", [1, 2, 3])
+
+    account.signer.sign_transaction.assert_called_once_with(
+        calls=[send_args],
+        nonce=0,
+        sender=account.address,
+        max_fee=0,
+        version=TRANSACTION_VERSION,
+    )
+
+    mock_call.assert_called_with(
+        contract=account,
+        max_fee=str(0),
+        method="__execute__",
+        network=NETWORK,
+        params=calldata,
+        signature=[str(sig_r), str(sig_s)],
+        type="invoke",
+        query_flag=None,
+    )
+
+
 @patch("nile.core.account.deploy", return_value=(MOCK_ADDRESS, MOCK_INDEX))
 def test_estimate_fee(mock_deploy):
     account = Account(KEY, NETWORK)
     # Mock send
     account.send = MagicMock()
 
-    account.estimate_fee(account.address, "method", [1, 2, 3], max_fee=0)
+    account.estimate_fee(account.address, "method", [1, 2, 3])
 
     account.send.assert_called_once_with(
-        account.address, "method", [1, 2, 3], 0, None, "estimate_fee"
+        account.address, "method", [1, 2, 3], None, None, "estimate_fee"
     )
 
 
@@ -198,10 +237,10 @@ def test_simulate(mock_deploy):
     # Mock send
     account.send = MagicMock()
 
-    account.simulate(account.address, "method", [1, 2, 3], max_fee=0)
+    account.simulate(account.address, "method", [1, 2, 3])
 
     account.send.assert_called_once_with(
-        account.address, "method", [1, 2, 3], 0, None, "simulate"
+        account.address, "method", [1, 2, 3], None, None, "simulate"
     )