diff --git a/brewman/models/voucher.py b/brewman/models/voucher.py
index eb320491..25bc881c 100644
--- a/brewman/models/voucher.py
+++ b/brewman/models/voucher.py
@@ -81,12 +81,7 @@ class Voucher(Base):
     )
 
     journals = relationship("Journal", back_populates="voucher", cascade="delete, delete-orphan", cascade_backrefs=False,)
-    inventories = relationship(
-        "Inventory",
-        backref="voucher",
-        cascade="delete, delete-orphan",
-        cascade_backrefs=False,
-    )
+    inventories = relationship("Inventory",back_populates="voucher",cascade="delete, delete-orphan",cascade_backrefs=False,)
     salary_deductions = relationship(
         "SalaryDeduction",
         backref="voucher",
@@ -284,9 +279,11 @@ class Inventory(Base):
     tax = Column("tax", Numeric)
     discount = Column("discount", Numeric)
 
+    voucher = relationship("Voucher", back_populates="inventories")
+
     def __init__(
         self,
-        id=None,
+        id_=None,
         voucher_id=None,
         product_id=None,
         batch_id=None,
@@ -296,7 +293,7 @@ class Inventory(Base):
         discount=None,
         batch=None,
     ):
-        self.id = id
+        self.id = id_
         self.voucher_id = voucher_id
         self.product_id = product_id
         self.batch_id = batch_id
diff --git a/brewman/routers/reports/closing_stock.py b/brewman/routers/reports/closing_stock.py
index ebe864cf..240fe6c5 100644
--- a/brewman/routers/reports/closing_stock.py
+++ b/brewman/routers/reports/closing_stock.py
@@ -1,4 +1,4 @@
-import datetime
+from datetime import datetime, date
 
 from fastapi import APIRouter, Depends, Security, Request
 from sqlalchemy.orm import Session
@@ -9,6 +9,7 @@ from ...core.security import get_current_active_user as get_user
 from ...db.session import SessionLocal
 from brewman.models.master import Product, CostCentre
 from brewman.models.voucher import Voucher, Journal, Inventory
+import brewman.schemas.reports as schemas
 from ...core.session import (
     set_period,
     get_start_date,
@@ -27,7 +28,7 @@ def get_db() -> Session:
         db.close()
 
 
-@router.get("")  # "Closing Stock"
+@router.get("", response_model=schemas.ClosingStock)
 def report_blank(
     request: Request,
     user: UserToken = Security(get_user, scopes=["closing-stock"]),
@@ -35,19 +36,18 @@ def report_blank(
     return {"date": get_finish_date(request.session), "body": []}
 
 
-@router.get("/{date}")
+@router.get("/{date_}", response_model=schemas.ClosingStock)
 def report_data(
-    date: str,
+    date_: str,
     request: Request,
     db: Session = Depends(get_db),
     user: UserToken = Security(get_user, scopes=["closing-stock"]),
 ):
-    set_period(get_start_date(request.session), date, request.session)
-    return {"date": date, "body": build_report(date, db)}
+    set_period(get_start_date(request.session), date_, request.session)
+    return {"date": date_, "body": build_report(datetime.strptime(date_, "%d-%b-%Y").date(), db)}
 
 
-def build_report(date, db):
-    date = datetime.datetime.strptime(date, "%d-%b-%Y")
+def build_report(date_: date, db: Session):
     amount_sum = func.sum(
         Journal.debit * Inventory.quantity * Inventory.rate * (1 + Inventory.tax)
     ).label("amount")
@@ -57,7 +57,7 @@ def build_report(date, db):
         .join(Product.inventories)
         .join(Inventory.voucher)
         .join(Voucher.journals)
-        .filter(Voucher.date <= date)
+        .filter(Voucher.date <= date_)
         .filter(Journal.cost_centre_id == CostCentre.cost_centre_purchase())
         .group_by(Product)
         .order_by(amount_sum.desc())
@@ -78,7 +78,7 @@ def build_report(date, db):
     return body
 
 
-def get_opening_stock(start_date, db):
+def get_opening_stock(date_: date, db: Session):
     opening_stock = (
         db.query(
             func.sum(
@@ -91,14 +91,14 @@ def get_opening_stock(start_date, db):
         .join(Journal.voucher)
         .join(Journal.account)
         .join(Voucher.inventories)
-        .filter(Voucher.date < start_date)
+        .filter(Voucher.date < date_)
         .filter(Journal.cost_centre_id == CostCentre.cost_centre_purchase())
         .scalar()
     )
     return 0 if opening_stock is None else opening_stock
 
 
-def get_closing_stock(finish_date, db):
+def get_closing_stock(date_, db: Session):
     closing_stock = (
         db.query(
             func.sum(
@@ -111,7 +111,7 @@ def get_closing_stock(finish_date, db):
         .join(Journal.voucher)
         .join(Journal.account)
         .join(Voucher.inventories)
-        .filter(Voucher.date <= finish_date)
+        .filter(Voucher.date <= date_)
         .filter(Journal.cost_centre_id == CostCentre.cost_centre_purchase())
         .scalar()
     )
diff --git a/brewman/schemas/reports.py b/brewman/schemas/reports.py
index 37bf7d39..c1b121da 100644
--- a/brewman/schemas/reports.py
+++ b/brewman/schemas/reports.py
@@ -147,3 +147,33 @@ class CashFlow(BaseModel):
         ).date()
 
 
+class ClosingStockItem(BaseModel):
+    product: str
+    group:  str
+    quantity: Decimal
+    amount: Decimal
+
+    class Config:
+        anystr_strip_whitespace = True
+        alias_generator = to_camel
+
+
+class ClosingStock(BaseModel):
+    date_: date
+    body: List[ClosingStockItem]
+
+    class Config:
+        anystr_strip_whitespace = True
+        alias_generator = to_camel
+        json_encoders = {
+            date: lambda v: v.strftime("%d-%b-%Y")
+        }
+
+    @validator("date_", pre=True)
+    def parse_date(cls, value):
+        return datetime.strptime(
+            value,
+            "%d-%b-%Y"
+        ).date()
+
+