diff --git a/app/models.py b/app/models.py
index 49ea53c..203bbed 100644
--- a/app/models.py
+++ b/app/models.py
@@ -49,6 +49,8 @@ class User(Base):
     twofa_sensitive_actions = Column(Boolean, default=False)
 
     role = Column(String, default="user")  # "user", "admin"
+    
+    # Legal
     consent_training = Column(Boolean, default=False)
     terms_accepted_at = Column(DateTime, nullable=True)
     privacy_accepted_at = Column(DateTime, nullable=True)
@@ -56,7 +58,10 @@ class User(Base):
     cookies_accepted_at = Column(DateTime, nullable=True)
     security_accepted_at = Column(DateTime, nullable=True)
     
+    # Billing
+    plan_id = Column(String, ForeignKey("plans.id"), default="free")
 
+    # Capabilities
     can_use_audio = Column(Boolean, default=False)
     can_use_vision = Column(Boolean, default=False)
     can_share = Column(Boolean, default=True)
@@ -72,7 +77,37 @@ class Cache(Base):
     response = Column(Text)
     created_at = Column(DateTime, default=datetime.utcnow)
 
-    
+class Plan(Base):
+    __tablename__ = "plans"
+    id = Column(String, primary_key=True)
+    name = Column(String)
+    price_monthly = Column(Float)
+    price_yearly = Column(Float)
+    description = Column(Text)
+
+    # ACL / capabilities
+    can_use_audio = Column(Boolean, default=False)
+    can_use_vision = Column(Boolean, default=False)
+    can_import_docs = Column(Boolean, default=True)
+    can_import_excel = Column(Boolean, default=True)
+    can_export_pdf = Column(Boolean, default=False)
+    can_export_md = Column(Boolean, default=True)
+    priority_queue = Column(String, default="default")  # default, premium, admin
+    max_conversations = Column(Integer, default=50)
+    max_attachment_size_mb = Column(Integer, default=10)
+    allowed_models = Column(Text)  # JSON list of models
+
+
+class Subscription(Base):
+    __tablename__ = "subscriptions"
+    id = Column(String, primary_key=True)
+    user_email = Column(String, ForeignKey("users.email"))
+    plan_id = Column(String, ForeignKey("plans.id"))
+    status = Column(String)  # active, expired, canceled, pending
+    renew_at = Column(DateTime)
+    created_at = Column(DateTime, default=datetime.utcnow)
+    updated_at = Column(DateTime, default=datetime.utcnow)
+
 
 
 class Preferences(Base):