Inventory Holding Cost Calculator
Calculate the true annual carrying cost of warehouse inventory across capital financing costs, storage space, insurance, taxes, shrinkage, and obsolescence.
Inventory Carrying Cost Formula
Holding Cost % = Capital % + Storage % + Service/Insurance % + Risk/Shrinkage %; Annual Holding Cost = Inventory Value × Holding Cost %- Capital Cost: Cost of money tied up in unsold stock (interest rate on line of credit or opportunity cost of capital).
- Storage Cost: Warehouse lease, pallet racking, climate control, utilities, and material handling wages.
- Service & Tax: Property taxes on physical inventory and commercial stock insurance premiums.
- Risk & Shrinkage: Damaged packaging, employee theft, shelf expiration, and obsolete inventory markdowns.
Step-by-Step Worked Example
Calculation Steps:
- Total Holding Cost Rate = 8% + 7% + 4% + 6% = 25.0%
- Annual Total Holding Cost = $200,000 × 0.25 = $50,000 / year
- Monthly Carrying Cost = $50,000 / 12 = $4,166.67 / month
- Holding Cost Per Unit = $50,000 / 5,000 units = $10.00 / unit / year
How to Use This Calculator
- 1Enter your average annual dollar inventory valuation.
- 2Input the four component holding rates (capital, storage, insurance/tax, and obsolescence/shrinkage).
- 3Optionally provide annual unit counts to view carrying cost on a per-unit basis.
Assumptions & Limitations
- Industry standard inventory carrying rates typically range between 20% and 30% annually.
- Holding cost applies uniformly across the average inventory valuation.
Frequently Asked Questions
Why is inventory holding cost so much higher than just warehouse rent?
Storage space is usually only 5% to 8% of inventory value. The remaining costs include interest on borrowed cash, insurance, shrinkage, theft, and obsolete stock that must be liquidated at a loss.
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