diff --git a/banking/banking/transaction_processing.py b/banking/banking/transaction_processing.py
new file mode 100644
index 000000000..137cee646
--- /dev/null
+++ b/banking/banking/transaction_processing.py
@@ -0,0 +1,41 @@
+# banking/transaction_processing.py
+
+def deposit(account_id: int, amount: float) -> bool:
+    """
+    Deposit an amount into an account.
+
+    Args:
+        account_id (int): The ID of the account.
+        amount (float): The amount to deposit.
+
+    Returns:
+        bool: True if the deposit was successful, False otherwise.
+    """
+    # implementation
+
+def withdraw(account_id: int, amount: float) -> bool:
+    """
+    Withdraw an amount from an account.
+
+    Args:
+        account_id (int): The ID of the account.
+        amount (float): The amount to withdraw.
+
+    Returns:
+bool: True if the withdrawal was successful, False otherwise.
+    """
+    # implementation
+
+def transfer(from_account_id: int, to_account_id: int, amount: float) -> bool:
+    """
+    Transfer an amount between two accounts.
+
+    Args:
+        from_account_id (int): The ID of the source account.
+        to_account_id (int): The ID of the destination account.
+        amount (float): The amount to transfer.
+
+    Returns:
+        bool: True if the transfer was successful, False otherwise.
+    """
+    # implementation