Inventory Carrying Cost Calculator
Inventory carrying cost is the annual cost of holding unsold inventory, expressed as both a dollar amount and a percentage of average inventory value. It includes the cost of capital (opportunity cost of cash tied up), warehousing, insurance, obsolescence, and shrinkage. Understanding your carrying cost rate is essential for Economic Order Quantity calculations, safety stock decisions, and profitability analysis. Enter each cost component below to see your total carrying cost and rate.
Inventory carrying cost formula
Capital Cost = Average Inventory Value x (Capital Rate / 100)
Obsolescence Cost = Average Inventory Value x (Obsolescence Rate / 100)
Total Carrying Cost = Capital Cost + Storage Cost + Insurance Cost + Obsolescence Cost
Carrying Cost Rate (%) = Total Carrying Cost / Average Inventory Value x 100
Using carrying cost in inventory decisions
- The carrying cost rate feeds directly into the Economic Order Quantity (EOQ) formula, which minimizes total ordering plus carrying costs.
- A higher carrying cost rate means you should order more frequently in smaller quantities to reduce average inventory.
- Compare your carrying cost rate to the discount you receive for buying in bulk: only order larger quantities if the bulk discount exceeds the additional carrying cost.
- Review your carrying cost components annually as storage costs, insurance rates, and cost of capital change over time.
- Segment carrying costs by product category: perishable items typically have much higher effective carrying costs than durable goods.
Inventory carrying cost: frequently asked questions
What is inventory carrying cost?
Inventory carrying cost (also called holding cost) is the total cost of storing and holding unsold inventory over a period, typically expressed as a percentage of average inventory value. It includes capital cost (cost of money tied up), storage, insurance, obsolescence, shrinkage, and handling.
What is a typical inventory carrying cost rate?
Industry research and supply chain management texts commonly cite carrying cost rates of 20-30% of average inventory value per year. The actual rate depends heavily on the cost of capital, storage costs (which vary by industry and location), and the perishability or obsolescence risk of the inventory.
Why does carrying cost matter for ordering decisions?
Carrying cost is one of the two key costs in the Economic Order Quantity (EOQ) model. Higher carrying costs mean it is more expensive to hold large amounts of inventory, pushing toward more frequent, smaller orders. Lower carrying costs allow larger safety stocks and infrequent orders.
What is the cost of capital component?
The capital cost component reflects the opportunity cost of the money tied up in inventory. If your business could earn a 10% annual return by investing cash elsewhere, holding $100,000 in inventory costs you $10,000 per year in opportunity cost, even if no cash is spent on storage.
How do I reduce inventory carrying costs?
Reduce average inventory through just-in-time ordering, faster inventory turnover, better demand forecasting, and eliminating slow-moving SKUs. Reduce storage costs by renegotiating warehouse leases or using third-party logistics. Lower obsolescence risk by shortening product life cycles and using first-in-first-out (FIFO) management.
Official sources
- U.S. Census Bureau: Manufacturing and Trade Inventories (inventory value benchmarks).
- Bureau of Transportation Statistics: Freight Facts and Figures (warehousing and logistics cost data).
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.