diff --git a/app/schemas.py b/app/schemas.py
index f82b4c8..9371673 100644
--- a/app/schemas.py
+++ b/app/schemas.py
@@ -1,6 +1,6 @@
 from pydantic import BaseModel
 from datetime import date
-from typing import Optional
+from typing import Optional, List
 
 # -----------------------
 # Customer Schemas
@@ -28,6 +28,7 @@ class Customer(CustomerBase):
     class Config:
         orm_mode = True
 
+
 # -----------------------
 # Account Schemas
 # -----------------------
@@ -43,3 +44,32 @@ class Account(AccountBase):
     account_number: str
     class Config:
         orm_mode = True
+
+
+# -----------------------
+# Transaction Schemas
+# -----------------------
+class TransactionBase(BaseModel):
+    account_id: str
+    branch_id: Optional[int] = None
+    transaction_type: str
+    amount: float
+    date: date
+    balance_after: float
+    vendor: Optional[str] = None
+    transaction_location: Optional[str] = None
+
+class Transaction(TransactionBase):
+    transaction_id: str
+    class Config:
+        orm_mode = True
+
+
+# -----------------------
+# Nested Schemas
+# -----------------------
+class AccountWithTransactions(Account):
+    transactions: Optional[List[Transaction]] = []
+
+class CustomerWithAccounts(Customer):
+    accounts: Optional[List[AccountWithTransactions]] = []