diff --git a/app/eco/models/account.py b/app/eco/models/account.py
new file mode 100644
index 0000000..98cebc5
--- /dev/null
+++ b/app/eco/models/account.py
@@ -0,0 +1,17 @@
+from sqlalchemy import Column, String, Date, Boolean, Integer
+from app.extensions import db
+
+class Account(db.Model):
+    __tablename__ = 'accounts'
+    __bind_key__ = 'eco'
+
+    id = Column(Integer, primary_key=True)
+    affiliate_code = Column(String(3), nullable=False)
+    customer_id = Column(String(9), nullable=False)
+    account_id = Column(String(10), unique=True, nullable=False)
+    registration_date = Column(Date, nullable=False)
+    account_currency_code = Column(String(3), nullable=False)
+    plastic_card_attached = Column(Boolean, default=False)
+    
+    def __repr__(self):
+        return f"<Account(id={self.id}, account_id={self.account_id}, customer_id={self.customer_id})>"
\ No newline at end of file
diff --git a/app/eco/models/customer.py b/app/eco/models/customer.py
new file mode 100644
index 0000000..7c3dc42
--- /dev/null
+++ b/app/eco/models/customer.py
@@ -0,0 +1,18 @@
+from sqlalchemy import Column, String, Date, Integer
+from sqlalchemy.orm import relationship
+from app.extensions import db
+
+
+class Customer(db.Model):
+    __tablename__ = 'customers'
+    __bind_key__ = 'eco'
+
+    id = Column(Integer, primary_key=True)
+    affiliate_code = Column(String(3), nullable=False)
+    customer_id = Column(String(9), unique=True, nullable=False)
+    msisdn = Column(String(15), nullable=True)
+    created_at = Column(Date, nullable=False)
+
+
+    def __repr__(self):
+        return f"<Customer(id={self.id}, customer_id={self.customer_id}, msisdn={self.msisdn})>"
\ No newline at end of file
diff --git a/app/eco/models/installment.py b/app/eco/models/installment.py
new file mode 100644
index 0000000..b44ea36
--- /dev/null
+++ b/app/eco/models/installment.py
@@ -0,0 +1,21 @@
+from app.eco.enums.installment_status import InstallmentStatus
+from sqlalchemy import Column, String, Date, Numeric, ForeignKey, Enum, Integer, DateTime
+from app.extensions import db
+import enum
+
+class Installment(db.Model):
+    __tablename__ = 'installments'
+    __bind_key__ = 'eco'
+
+
+    id = Column(Integer, primary_key=True)
+    loan_id = Column(Integer, nullable=False)
+    installment_number = Column(Integer, nullable=False)
+    due_date = Column(Date, nullable=False)
+    amount = Column(Numeric(12, 2), nullable=False)
+    paid_amount = Column(Numeric(12, 2), default=0.00)
+    status = Column(Enum(InstallmentStatus), default=InstallmentStatus.PENDING)
+    penalty_amount = Column(Numeric(12, 2), default=0.00)
+    
+    def __repr__(self):
+        return f"<Installment(id={self.id}, loan_id={self.loan_id}, status={self.status})>"
\ No newline at end of file
diff --git a/app/eco/models/loan.py b/app/eco/models/loan.py
new file mode 100644
index 0000000..096e9bf
--- /dev/null
+++ b/app/eco/models/loan.py
@@ -0,0 +1,26 @@
+from app.eco.enums.loan_status import LoanStatus
+from sqlalchemy import Column, String, Date, Numeric, Enum
+from app.extensions import db
+import enum
+
+class Loan(db.Model):
+    __tablename__ = 'loans'
+    __bind_key__ = 'eco'
+
+    id = Column(Integer, primary_key=True)
+    request_id = Column(String(50), unique=True, nullable=False)
+    affiliate_code = Column(String(3), nullable=False)
+    customer_id = Column(String(9), nullable=False)
+    account_id = Column(String(10), nullable=False)
+    product_id = Column(String(4), nullable=False)
+    debt_id = Column(String(20), unique=True, nullable=False)
+    initial_credit_amount = Column(Numeric(12, 2), nullable=False)
+    current_balance = Column(Numeric(12, 2), nullable=False)
+    interest_rate = Column(Numeric(5, 2), nullable=False)
+    status = Column(Enum(LoanStatus), default=LoanStatus.PENDING)
+    disbursement_date = Column(Date, nullable=False)
+    due_date = Column(Date, nullable=False)
+    lien_amount = Column(Numeric(12, 2), default=0.00)
+    
+    def __repr__(self):
+        return f"<Loan(id={self.id}, debt_id={self.debt_id}, status={self.status})>"
\ No newline at end of file
diff --git a/app/eco/models/offer.py b/app/eco/models/offer.py
new file mode 100644
index 0000000..7214148
--- /dev/null
+++ b/app/eco/models/offer.py
@@ -0,0 +1,22 @@
+from sqlalchemy import Column, String, Numeric, Date, Integer
+from app.extensions import db
+
+class Offer(db.Model):
+    __tablename__ = 'offers'
+    __bind_key__ = 'eco'
+
+    id = Column(Integer, primary_key=True)
+    offer_id = Column(String(50), unique=True, nullable=False)
+    session_id = Column(String(50), nullable=False)
+    customer_id = Column(String(9), nullable=False)
+    product_id = Column(String(4), nullable=False)  
+    amount = Column(Numeric(12, 2), nullable=False)
+    upfront_payment = Column(Numeric(12, 2), nullable=False)
+    interest_rate = Column(Numeric(5, 2), nullable=False)
+    installment_amount = Column(Numeric(12, 2), nullable=False)
+    total_repayment_amount = Column(Numeric(12, 2), nullable=False)
+    expiration_date = Column(Date, nullable=False)
+    status = Column(String(20), default='AVAILABLE') 
+    
+    def __repr__(self):
+        return f"<Offer(id={self.id}, offer_id={self.offer_id}, status={self.status})>"
\ No newline at end of file
diff --git a/app/eco/models/session.py b/app/eco/models/session.py
new file mode 100644
index 0000000..8d59343
--- /dev/null
+++ b/app/eco/models/session.py
@@ -0,0 +1,18 @@
+from sqlalchemy import Column, String, DateTime, Integer
+from app.extensions import db
+
+class Session(db.Model):
+    __tablename__ = 'sessions'
+    __bind_key__ = 'eco'
+
+    id = Column(Integer, primary_key=True)
+    session_id = Column(String(50), unique=True, nullable=False)
+    customer_id = Column(String(9), nullable=True)
+    account_id = Column(String(10), nullable=True)
+    msisdn = Column(String(15), nullable=False)
+    channel = Column(String(10), nullable=False) 
+    expires_at = Column(DateTime, nullable=False)
+    status = Column(String(20), default='ACTIVE') 
+    
+    def __repr__(self):
+        return f"<Session(id={self.id}, session_id={self.session_id}, status={self.status})>"
\ No newline at end of file