26/05/2026
How the Closing Entry Amount is Formed in the “Avg. Cost Calculation Overview” Window in Business Central
One of the most commonly misunderstood areas in inventory costing within Business Central is the Closing Entry Amount shown in the Avg. Cost Calculation Overview window.
At first glance, it may look like a simple summed value, but in reality, it is the result of a structured calculation process driven by valuation entries, cost adjustments, and the average cost logic applied during the closing run.
In this article, we break down how this amount is formed and what really drives it behind the scenes.
📊 What is the “Closing Entry Amount”?
The Closing Entry Amount represents the final valuation impact that will be posted when the average cost calculation is executed for a period.
⚙️ Key Components That Form the Closing Entry Amount
1. Opening Inventory Value
This is the starting point of the calculation period:
Remaining quantity carried forward
Valued at previous average cost
2. Item Ledger Entries During the Period
All transactions posted in the period contribute:
Purchases (increases inventory value)
Sales (reduces quantity at previous average cost)
Positive/negative adjustments
Each entry carries:
Quantity impact
Initial cost impact (if any)
Expected vs. actual cost variance
3. Expected Average Cost vs. Actual Cost
Business Central continuously calculates a running average cost:
Average Cost = Total Inventory Value / Total Quantity
4. Cost Adjustment Factor (Revaluation Effect)
During closing:
Remaining inventory is revalued to the final average cost
Variances are distributed across usage entries
Corrections are generated for prior postings if required
🧮 How the Closing Entry Amount is Derived (Conceptually)
The system essentially calculates:
Closing Entry Amount = Total Expected Cost Impact − Final Revalued Cost Impact
Or more practically:
Sum of all inventory value differences identified during recalculation
Adjusted for remaining stock valuation at period end
🔍 Why This Matters
Understanding this calculation is critical because it helps you:
Explain unexpected inventory value changes
Debug costing discrepancies
Validate audit and financial reporting accuracy
Improve control over inventory valuation processes
📌 Common Misconception
Many assume the closing entry is based only on:
“Purchases minus sales”
In reality, it is much more dynamic and includes:
Average cost revaluation logic
Historical correction effects
System-generated adjustments across entries
🚀 Final Thoughts
The Avg. Cost Calculation Overview is not just a reporting tool—it is a reflection of how Business Central continuously reconciles inventory value across time.
The Closing Entry Amount is the final outcome of that reconciliation process.
Once understood, it becomes a powerful diagnostic tool for inventory costing analysis.
