diff --git a/alembic/versions/0ea5625b4913_order_durationdays.py b/alembic/versions/0ea5625b4913_order_durationdays.py
new file mode 100644
index 0000000..12007e9
--- /dev/null
+++ b/alembic/versions/0ea5625b4913_order_durationdays.py
@@ -0,0 +1,46 @@
+"""+order.durationdays
+
+Revision ID: 0ea5625b4913
+Revises: b97ce5b7d663
+Create Date: 2026-08-02 13:17:18.429961
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+
+# revision identifiers, used by Alembic.
+revision: str = '0ea5625b4913'
+down_revision: Union[str, Sequence[str], None] = 'b97ce5b7d663'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    orderstatus = postgresql.ENUM('PENDING', 'PAID', 'DISCARDED', name='orderstatus')
+    orderstatus.create(op.get_bind())
+
+    op.create_unique_constraint(None, 'order_addons', ['id'])
+    op.add_column('orders', sa.Column('duration_days', sa.INTEGER(), nullable=False))
+    op.add_column('orders', sa.Column('status', sa.Enum('PENDING', 'PAID', 'DISCARDED', name='orderstatus'), nullable=False))
+    op.create_unique_constraint(None, 'orders', ['id'])
+    op.create_unique_constraint(None, 'subscription_addons', ['id'])
+    op.create_unique_constraint(None, 'subscriptions', ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, 'subscriptions', type_='unique')
+    op.drop_constraint(None, 'subscription_addons', type_='unique')
+    op.drop_constraint(None, 'orders', type_='unique')
+    op.drop_column('orders', 'status')
+    op.drop_column('orders', 'duration_days')
+    op.drop_constraint(None, 'order_addons', type_='unique')
+    # ### end Alembic commands ###
diff --git a/alembic/versions/b97ce5b7d663_subscriptions_infra.py b/alembic/versions/b97ce5b7d663_subscriptions_infra.py
new file mode 100644
index 0000000..265c841
--- /dev/null
+++ b/alembic/versions/b97ce5b7d663_subscriptions_infra.py
@@ -0,0 +1,72 @@
+"""subscriptions infra
+
+Revision ID: b97ce5b7d663
+Revises: 3d767875ec7d
+Create Date: 2026-08-02 12:38:25.357158
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'b97ce5b7d663'
+down_revision: Union[str, Sequence[str], None] = '3d767875ec7d'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('orders',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.INTEGER(), nullable=False),
+    sa.Column('devices', sa.INTEGER(), nullable=False),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('id'),
+    sa.UniqueConstraint('user_id')
+    )
+    op.create_table('subscriptions',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('user_id', sa.INTEGER(), nullable=False),
+    sa.Column('devices', sa.INTEGER(), nullable=False),
+    sa.Column('status', sa.Enum('ACTIVE', 'EXPIRED', name='subscriptionstatus'), nullable=False),
+    sa.Column('expires_at', sa.DateTime(timezone=True), nullable=False),
+    sa.ForeignKeyConstraint(['user_id'], ['users.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('id'),
+    sa.UniqueConstraint('user_id')
+    )
+    op.create_table('order_addons',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('order_id', sa.INTEGER(), nullable=False),
+    sa.Column('addon_id', sa.TEXT(), nullable=False),
+    sa.ForeignKeyConstraint(['addon_id'], ['addons.id'], ),
+    sa.ForeignKeyConstraint(['order_id'], ['orders.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('id')
+    )
+    op.create_table('subscription_addons',
+    sa.Column('id', sa.INTEGER(), autoincrement=True, nullable=False),
+    sa.Column('subscription_id', sa.INTEGER(), nullable=False),
+    sa.Column('addon_id', sa.TEXT(), nullable=False),
+    sa.ForeignKeyConstraint(['addon_id'], ['addons.id'], ),
+    sa.ForeignKeyConstraint(['subscription_id'], ['subscriptions.id'], ),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('subscription_addons')
+    op.drop_table('order_addons')
+    op.drop_table('subscriptions')
+    op.drop_table('orders')
+    # ### end Alembic commands ###
diff --git a/alembic/versions/bc424721d767_order_user_id_not_unique.py b/alembic/versions/bc424721d767_order_user_id_not_unique.py
new file mode 100644
index 0000000..ffd2bcf
--- /dev/null
+++ b/alembic/versions/bc424721d767_order_user_id_not_unique.py
@@ -0,0 +1,32 @@
+"""order.user_id -> NOT UNIQUE
+
+Revision ID: bc424721d767
+Revises: 0ea5625b4913
+Create Date: 2026-08-02 13:23:23.626697
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'bc424721d767'
+down_revision: Union[str, Sequence[str], None] = '0ea5625b4913'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(op.f('orders_user_id_key'), 'orders', type_='unique')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint(op.f('orders_user_id_key'), 'orders', ['user_id'], postgresql_nulls_not_distinct=False)
+    # ### end Alembic commands ###
diff --git a/config.py b/config.py
index 8b6f9bd..fcea463 100644
--- a/config.py
+++ b/config.py
@@ -21,6 +21,8 @@ class Settings(BaseSettings):
     pally_shop_id: str = Field()
     pally_token: str = Field()
 
+    minimal_deposit: int = Field()
+
     @computed_field
     @property
     def db_url(self) -> str:
diff --git a/db/models/__init__.py b/db/models/__init__.py
index efbffdb..0b9ee52 100644
--- a/db/models/__init__.py
+++ b/db/models/__init__.py
@@ -1,8 +1,22 @@
 from .addons import Addon
 from .invoice import Invoice
+from .orders import Order, OrderAddon
 from .pricing import PricingConfig
 from .sessions import Session
+from .subscription_addons import SubscriptionAddon
+from .subscriptions import Subscription
 from .transactions import BalanceTransaction
 from .users import User
 
-__all__ = ["Addon", "BalanceTransaction", "Invoice", "PricingConfig", "Session", "User"]
+__all__ = [
+    "Addon",
+    "BalanceTransaction",
+    "Invoice",
+    "Order",
+    "OrderAddon",
+    "PricingConfig",
+    "Session",
+    "Subscription",
+    "SubscriptionAddon",
+    "User",
+]
diff --git a/db/models/orders.py b/db/models/orders.py
new file mode 100644
index 0000000..de493c0
--- /dev/null
+++ b/db/models/orders.py
@@ -0,0 +1,48 @@
+from enum import StrEnum
+from typing import TYPE_CHECKING
+
+from sqlalchemy import INTEGER, Enum, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from db.base import Base
+
+if TYPE_CHECKING:
+    from db.models import User
+
+
+class OrderStatus(StrEnum):
+    PENDING = "pending"
+    PAID = "paid"
+    DISCARDED = "discarded"
+
+
+class OrderAddon(Base):
+    __tablename__ = "order_addons"
+
+    id: Mapped[int] = mapped_column(
+        INTEGER, nullable=False, unique=True, autoincrement=True, primary_key=True
+    )
+    order_id: Mapped[int] = mapped_column(ForeignKey("orders.id"), nullable=False)
+    addon_id: Mapped[str] = mapped_column(ForeignKey("addons.id"), nullable=False)
+
+    order: Mapped["Order"] = relationship("Order", back_populates="addons", lazy="selectin")
+
+
+class Order(Base):
+    __tablename__ = "orders"
+
+    id: Mapped[int] = mapped_column(
+        INTEGER, nullable=False, autoincrement=True, unique=True, primary_key=True
+    )
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False)
+
+    devices: Mapped[int] = mapped_column(INTEGER, nullable=False)
+    duration_days: Mapped[int] = mapped_column(INTEGER, nullable=False)
+    status: Mapped[OrderStatus] = mapped_column(
+        Enum(OrderStatus, name="orderstatus"), nullable=False, default=OrderStatus.PENDING
+    )
+
+    user: Mapped["User"] = relationship("User", back_populates="orders", lazy="selectin")
+    addons: Mapped[list["OrderAddon"]] = relationship(
+        "OrderAddon", back_populates="order", lazy="selectin"
+    )
diff --git a/db/models/subscription_addons.py b/db/models/subscription_addons.py
new file mode 100644
index 0000000..aa3413d
--- /dev/null
+++ b/db/models/subscription_addons.py
@@ -0,0 +1,23 @@
+from typing import TYPE_CHECKING
+
+from sqlalchemy import INTEGER, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from db.base import Base
+
+if TYPE_CHECKING:
+    from db.models import Subscription
+
+
+class SubscriptionAddon(Base):
+    __tablename__ = "subscription_addons"
+
+    id: Mapped[int] = mapped_column(
+        INTEGER, nullable=False, unique=True, autoincrement=True, primary_key=True
+    )
+    subscription_id: Mapped[int] = mapped_column(ForeignKey("subscriptions.id"), nullable=False)
+    addon_id: Mapped[str] = mapped_column(ForeignKey("addons.id"), nullable=False)
+
+    subscription: Mapped["Subscription"] = relationship(
+        "Subscription", back_populates="addons", lazy="selectin"
+    )
diff --git a/db/models/subscriptions.py b/db/models/subscriptions.py
new file mode 100644
index 0000000..44a0b8c
--- /dev/null
+++ b/db/models/subscriptions.py
@@ -0,0 +1,33 @@
+import datetime
+from typing import TYPE_CHECKING
+
+from sqlalchemy import INTEGER, DateTime, Enum, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from db.base import Base
+from schemas.enums import SubscriptionStatus
+
+if TYPE_CHECKING:
+    from db.models import SubscriptionAddon, User
+
+
+class Subscription(Base):
+    __tablename__ = "subscriptions"
+
+    id: Mapped[int] = mapped_column(
+        INTEGER, nullable=False, autoincrement=True, unique=True, primary_key=True
+    )
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id"), nullable=False, unique=True)
+
+    devices: Mapped[int] = mapped_column(INTEGER, nullable=False)
+    status: Mapped[SubscriptionStatus] = mapped_column(
+        Enum(SubscriptionStatus, name="subscriptionstatus"),
+        nullable=False,
+        default=SubscriptionStatus.EXPIRED,
+    )
+    expires_at: Mapped[datetime.datetime] = mapped_column(DateTime(True), nullable=False)
+
+    user: Mapped["User"] = relationship("User", back_populates="subscription", lazy="selectin")
+    addons: Mapped[list["SubscriptionAddon"]] = relationship(
+        "SubscriptionAddon", back_populates="subscription", lazy="selectin"
+    )
diff --git a/db/models/users.py b/db/models/users.py
index 4295f58..3aa68c5 100644
--- a/db/models/users.py
+++ b/db/models/users.py
@@ -6,7 +6,7 @@ from sqlalchemy.orm import Mapped, mapped_column, relationship
 from db.base import Base
 
 if TYPE_CHECKING:
-    from db.models.sessions import Session
+    from db.models import Order, Session, Subscription
 
 
 class User(Base):
@@ -22,6 +22,10 @@ class User(Base):
 
     balance: Mapped[float] = mapped_column(REAL, nullable=False, default=0)
 
+    orders: Mapped[list["Order"]] = relationship("Order", back_populates="user", lazy="selectin")
+    subscription: Mapped["Subscription"] = relationship(
+        "Subscription", back_populates="user", lazy="selectin"
+    )
     sessions: Mapped[list["Session"]] = relationship(back_populates="user", lazy="selectin")
     referal: Mapped["User | None"] = relationship(
         "User",
diff --git a/external/pally.py b/external/pally.py
index b673594..75c4080 100644
--- a/external/pally.py
+++ b/external/pally.py
@@ -224,7 +224,7 @@ class BillService(BaseService):
         super().__init__(session)
         self._payer_pays_commission = payer_pays_commission
 
-    async def create(
+    async def create(  # noqa: PLR0917
         self,
         amount: float,
         shop_id: str,
diff --git a/repositories/orders.py b/repositories/orders.py
new file mode 100644
index 0000000..54f8883
--- /dev/null
+++ b/repositories/orders.py
@@ -0,0 +1,51 @@
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from db.models.orders import Order, OrderAddon, OrderStatus
+
+
+class OrderRepository:
+    def __init__(self, session: AsyncSession) -> None:
+        self.session = session
+
+    async def create(
+        self,
+        user_id: int,
+        devices: int,
+        duration_days: int,
+        addons: list[str] | None = None,
+        status: OrderStatus = OrderStatus.PENDING,
+    ) -> Order:
+        if not addons:
+            addons = []
+
+        order = Order(
+            user_id=user_id,
+            devices=devices,
+            duration_days=duration_days,
+            status=status,
+        )
+        self.session.add(order)
+        await self.session.flush()
+
+        for addon_id in addons:
+            addon = OrderAddon(order_id=order.id, addon_id=addon_id)
+            self.session.add(addon)
+
+        await self.session.commit()
+
+        return order
+
+    async def get_order_by_user_id(self, user_id: int) -> list[Order]:
+        stmt = select(Order).where(Order.user_id == user_id)
+        r = await self.session.execute(stmt)
+
+        return list(r.scalars().all())
+
+    async def get_active_by_user_id(self, user_id: int) -> list[Order]:
+        stmt = (
+            select(Order).where(Order.user_id == user_id).where(Order.status == OrderStatus.PENDING)
+        )
+        r = await self.session.execute(stmt)
+
+        return list(r.scalars().all())
diff --git a/routes/orders.py b/routes/orders.py
index 3e26fb8..2937926 100644
--- a/routes/orders.py
+++ b/routes/orders.py
@@ -7,15 +7,17 @@ from db.session import get_db
 from external.pally import PallyClient
 from repositories import AddonsRepository, PricingRepository
 from repositories.invoices import InvoiceRepository
+from repositories.orders import OrderRepository
+from schemas.checkout import CheckoutResponse
 from schemas.dto import AuthContext
-from schemas.invoices import InvoiceResponse, InvoiceStatus
+from schemas.invoices import InvoiceStatus
 from schemas.plans import OrderDetails
 from services.plans import calculate_price, get_pricing_model
 
 router = APIRouter(prefix="/orders")
 
 
-@router.post("/checkout", response_model=InvoiceResponse, status_code=201)
+@router.post("/checkout", response_model=CheckoutResponse, status_code=201)
 async def checkout(
     order: OrderDetails,
     ctx: AuthContext = Depends(get_auth_context),
@@ -25,17 +27,36 @@ async def checkout(
     addons_repo = AddonsRepository(session)
     pricing_repo = PricingRepository(session)
     invoices_repo = InvoiceRepository(session)
+    orders_repo = OrderRepository(session)
+
+    order_entry = await orders_repo.create(
+        ctx.user.id,
+        order.devices,
+        order.duration_days,
+        addons=order.addons,
+    )
 
     pricing = await get_pricing_model(addons_repo, pricing_repo)
     price = await calculate_price(addons_repo=addons_repo, order=order, pricing=pricing)
+    bonus_covered = ctx.user.balance
+    amount_to_pay = max(price - bonus_covered, cfg.minimal_deposit) if bonus_covered < price else 0
 
-    invoice = await invoices_repo.create(
-        creator_id=ctx.user.id, amount=price, status=InvoiceStatus.ACTIVE
+    if amount_to_pay > 0:
+        invoice = await invoices_repo.create(
+            creator_id=ctx.user.id, amount=amount_to_pay, status=InvoiceStatus.ACTIVE
+        )
+
+        bill = await pally.bills.create(amount_to_pay, cfg.pally_shop_id, order_id=invoice.id)
+        payment_link = bill.link_page_url
+        if not payment_link:
+            raise HTTPException(500, detail="failed to create invoice")
+    else:
+        payment_link = None
+
+    return CheckoutResponse(
+        order_id=order_entry.id,
+        total_amount=price,
+        bonus_paid=bonus_covered,
+        amount_to_pay=amount_to_pay,
+        payment_link=payment_link,
     )
-
-    bill = await pally.bills.create(price, cfg.pally_shop_id, order_id=invoice.id)
-
-    if not (bill.success and bill.link_page_url):
-        raise HTTPException(500, detail="Failed to create an invoice.")
-
-    return InvoiceResponse(success=True, payment_link=bill.link_page_url, amount=float(price))
diff --git a/routes/payments/pally.py b/routes/payments/pally.py
index 3d6a82b..90be1a1 100644
--- a/routes/payments/pally.py
+++ b/routes/payments/pally.py
@@ -1,4 +1,5 @@
 # ruff: noqa: N803
+from datetime import UTC, datetime, timedelta
 import hashlib
 import hmac
 import logging
@@ -6,14 +7,19 @@ import math
 
 from fastapi import Depends, Form, HTTPException
 from fastapi.routing import APIRouter
+from sqlalchemy import delete
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from config import cfg
 from core.deps import get_db
+from db.models import Subscription, SubscriptionAddon
+from db.models.orders import OrderStatus
+from db.models.transactions import BalanceTransaction
 from db.models.transactions import BalanceTxType
 from external.pally import BillStatus
 from repositories.invoices import InvoiceRepository
-from repositories.users import UserRepository
+from repositories.orders import OrderRepository
+from schemas.enums import SubscriptionStatus
 from schemas.invoices import InvoiceStatus
 
 router = APIRouter(prefix="/payments/pally")
@@ -45,8 +51,8 @@ async def pally_callback(  # noqa: PLR0911
     ErrorMessage: str | None = Form(None),
     session: AsyncSession = Depends(get_db),
 ):
-    users_repo = UserRepository(session)
     invoice_repo = InvoiceRepository(session)
+    orders_repo = OrderRepository(session)
     invoice_id_str = InvId
 
     logger.info(
@@ -171,39 +177,97 @@ async def pally_callback(  # noqa: PLR0911
                 )
                 return "OK"
 
+        active_orders = await orders_repo.get_active_by_user_id(invoice.creator_id)
+        if not active_orders:
+            logger.critical(
+                "Active order not found for bill %s (TrsId: %s, user_id=%s)",
+                invoice.id,
+                TrsId,
+                invoice.creator_id,
+            )
+            return "OK"
+
+        order = active_orders[0]
+        user = invoice.creator
+        subscription = user.subscription
+        now = datetime.now(UTC)
+
         logger.info(
-            "Processing payment: bill_id=%s, user_id=%s, amount=%s",
+            "Processing payment: bill_id=%s, order_id=%s, user_id=%s, amount=%s",
             invoice.id,
+            order.id,
             invoice.creator_id,
             amount,
         )
 
-        # Credit user balance
-        await users_repo.increase_balance(
-            invoice.creator_id,
-            amount=amount,
-            tx_type=BalanceTxType.DEPOSIT,
-            description=f"payment via PALLY (TrsId: {TrsId})",
-        )
+        order.status = OrderStatus.PAID
+        invoice.status = InvoiceStatus.PAID
+
+        if subscription is None:
+            subscription = Subscription(
+                user_id=invoice.creator_id,
+                devices=order.devices,
+                status=SubscriptionStatus.ACTIVE,
+                expires_at=now + timedelta(days=order.duration_days),
+            )
+            session.add(subscription)
+            await session.flush()
+        else:
+            logger.warning(
+                "Subscription already exists for user_id=%s, updating existing subscription %s",
+                invoice.creator_id,
+                subscription.id,
+            )
+            subscription.devices = order.devices
+            subscription.status = SubscriptionStatus.ACTIVE
+            subscription.expires_at = max(subscription.expires_at, now) + timedelta(
+                days=order.duration_days
+            )
+            await session.execute(
+                delete(SubscriptionAddon).where(SubscriptionAddon.subscription_id == subscription.id)
+            )
+
+        for addon in order.addons:
+            session.add(SubscriptionAddon(subscription_id=subscription.id, addon_id=addon.addon_id))
 
         # Process referral bonus
-        user = invoice.creator
-        referal = user.referal
-        if referal is not None:
+        referal_id = user.referal_id
+        if referal_id is not None:
             referal_amount = math.floor(amount * (cfg.referal_bonus / 100))
-            await users_repo.increase_balance(
-                referal,
-                referal_amount,
-                tx_type=BalanceTxType.REFERRAL_BONUS,
-                description=f"referral reward for user {invoice.creator_id} (TrsId: {TrsId})",
-            )
-            logger.info(
-                "Referral bonus processed: referrer_id=%s, amount=%s", referal, referal_amount
-            )
+            if referal_amount > 0:
+                referal_user = await session.get(type(user), referal_id)
+                if referal_user is not None:
+                    session.add(
+                        BalanceTransaction(
+                            user_id=referal_id,
+                            amount=referal_amount,
+                            tx_type=BalanceTxType.REFERRAL_BONUS,
+                            balance_before=referal_user.balance,
+                            balance_after=referal_user.balance + referal_amount,
+                            description=f"referral reward for user {invoice.creator_id} (TrsId: {TrsId})",
+                        )
+                    )
+                    referal_user.balance += referal_amount
+
+                    logger.info(
+                        "Referral bonus processed: referrer_id=%s, amount=%s",
+                        referal_id,
+                        referal_amount,
+                    )
+                else:
+                    logger.warning(
+                        "Referrer %s not found for user_id=%s while processing TrsId %s",
+                        referal_id,
+                        invoice.creator_id,
+                        TrsId,
+                    )
+
+        await session.commit()
 
         logger.info("Payment processing completed successfully for TrsId %s", TrsId)
 
     except Exception as e:
+        await session.rollback()
         logger.exception(
             "CRITICAL ERROR processing payment for TrsId %s, bill_id %s, user_id %s: %s",
             TrsId,
@@ -211,12 +275,8 @@ async def pally_callback(  # noqa: PLR0911
             invoice.creator_id,
             str(e),
         )
-        # Don't return early - still mark as success to prevent retries
-        # The balance operation might have partially succeeded
+        raise HTTPException(500, detail="Payment processing failed.") from e
 
-    # Update bill status to success
-    await invoice_repo.update_status_by_id(int(invoice.id), status=InvoiceStatus.PAID)
-
-    logger.info("Bill %s marked as SUCCESS for TrsId %s", invoice.id, TrsId)
+    logger.info("Bill %s marked as PAID for TrsId %s", invoice.id, TrsId)
 
     return "OK"
diff --git a/schemas/checkout.py b/schemas/checkout.py
new file mode 100644
index 0000000..f847d90
--- /dev/null
+++ b/schemas/checkout.py
@@ -0,0 +1,15 @@
+from pydantic import BaseModel, Field, computed_field
+
+
+class CheckoutResponse(BaseModel):
+    order_id: str = Field()
+    total_amount: float = Field()
+    bonus_paid: float = Field()
+    amount_to_pay: float = Field()
+
+    payment_link: str | None = Field(None)
+
+    @property
+    @computed_field
+    def is_fully_paid(self):
+        return self.total_amount <= self.bonus_paid and self.amount_to_pay <= 0
diff --git a/schemas/enums.py b/schemas/enums.py
new file mode 100644
index 0000000..dd598f5
--- /dev/null
+++ b/schemas/enums.py
@@ -0,0 +1,6 @@
+from enum import StrEnum
+
+
+class SubscriptionStatus(StrEnum):
+    ACTIVE = "active"
+    EXPIRED = "expired"