Inventory Carrying Cost: Formula & How to Reduce It

What Is Inventory Carrying Cost?

Inventory carrying cost (also called holding cost) is the total cost of keeping unsold stock over a period—usually a year. It’s expressed as a percentage of your average inventory value. It’s the hidden tax on overstocking: the more inventory you hold, the more you pay simply to keep it on the shelf.

Not sure what your stock is really costing you? GOIS gives you live stock value and turnover data so you can size inventory correctly. Request a demo

The 4 Components of Carrying Cost

• Capital costs — the money tied up in inventory, plus financing and interest. Usually the largest component.
• Storage/space costs — warehouse rent or mortgage, utilities, climate control, security, and handling.
• Service costs — insurance, taxes, inventory management software, and the labor to count and manage stock.
• Risk costs — depreciation, obsolescence, spoilage, damage, and shrinkage. Anything that loses value before it sells.

The Inventory Carrying Cost Formula

Carrying Cost (%) = (Total Annual Carrying Costs ÷ Average Inventory Value) × 100

Step-by-Step Calculation

Example: Your average inventory value is $500,000. Over the year you spend:

• Capital/financing: $40,000
• Storage and utilities: $30,000
• Service (insurance, tax, software, labor): $15,000
• Risk (obsolescence, shrinkage): $15,000

Total carrying cost = $100,000

Carrying Cost % = ($100,000 ÷ $500,000) × 100 = 20%

So every dollar of inventory costs you 20 cents a year just to hold.

What’s a “Good” Carrying Cost?

Industry guidance from the Association for Supply Chain Management generally places carrying costs in the 15–25% range, though it varies widely by product type and can run higher for perishable or fast-obsolescing goods. If you’re above 25%, you likely have too much slow-moving stock. Below 15% is efficient—but check you’re not stocking out.

Most businesses underestimate this number because they only count storage and forget capital and risk.

How to Reduce Inventory Carrying Costs

• Cut dead and slow-moving stock. It’s pure risk cost. Identify and clear it.
• Right-size order quantities with economic order quantity so you’re not overordering.
• Prioritize with ABC analysis. Tighten control on high-value items; simplify the long tail.
• Improve forecasting to reduce the buffer you need to carry.
• Increase inventory turnover. Faster turns mean less capital sitting still.
• Consolidate warehouses or rebalance stock across locations to cut space costs.

How Inventory Software Lowers Carrying Costs

You can’t reduce what you can’t measure. A cloud inventory management system shows live stock value and movement, flags slow-moving items through reporting and analytics, and rebalances stock across multiple warehouses—so you hold less without risking stockouts. GOIS does this for 2,400+ businesses across 20+ countries.

Stop paying to store stock you don’t need. GOIS surfaces the slow movers and stock value driving your carrying costs. Request a demo

Key Takeaways

• Carrying cost % = (annual carrying costs ÷ average inventory value) × 100.
• Four components: capital, storage, service, and risk.
• Typical range is 15–25% of inventory value.
• The fastest reductions come from clearing dead stock and right-sizing orders.

Frequently Asked Questions

Conclusion

Inventory carrying cost turns “we have plenty of stock” into a number you can act on. Add up capital, storage, service, and risk, divide by your average inventory value, and compare against the 15–25% benchmark. If you’re high, the levers are clear: clear dead stock, order smarter, and turn inventory faster.