Inventory Carrying Cost Calculator
Calculate annual inventory carrying cost from average inventory value and a carrying cost rate made up of storage, insurance, obsolescence, and opportunity cost.
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Carrying Cost Rate Components (% per year)
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Results
Total Carrying Cost Rate
26.0%
Annual Carrying Cost
$78,000
How Inventory Carrying Cost Is Calculated
Inventory carrying cost (also called holding cost) is what it costs a business each year just to keep inventory on hand — separate from what the inventory itself is worth. Enter your average inventory value along with a carrying cost rate made up of its typical components — storage, insurance, obsolescence, and the opportunity cost of capital tied up in stock — and this calculator computes the total annual carrying cost.
A combined carrying cost rate of roughly 20-30% of inventory value per year is a commonly cited industry rule of thumb, made up of storage costs (warehousing, utilities, labor), insurance, obsolescence or shrinkage (goods that go unsold, expire, or become outdated), and the opportunity cost of the capital that's tied up in inventory instead of earning a return elsewhere.
Example
With $300,000 in average inventory and a combined rate of 6% storage + 2% insurance + 8% obsolescence + 10% opportunity cost = 26% total, the annual carrying cost is 300,000 × 0.26 = $78,000 — meaning it costs about $78,000 a year just to hold that inventory, on top of what it cost to acquire.
Common Use Cases
- Understanding the true annual cost of carrying excess or safety-stock inventory.
- Justifying inventory reduction or just-in-time initiatives with a dollar figure.
- Comparing the cost of holding inventory against the cost of stockouts or expedited shipping.
FAQs
How is this different from inventory turnover?
Inventory turnover measures how many times inventory is sold and replaced in a period (COGS ÷ average inventory) — it's a speed metric. Carrying cost instead puts an actual dollar figure on what it costs to hold that inventory each year, regardless of how fast it turns over.
What counts as the "opportunity cost" component?
It's the return that capital tied up in inventory could have earned elsewhere — paying down debt, investing in growth, or simply earning interest — instead of sitting on a warehouse shelf. Many businesses estimate this using their cost of capital or a target investment return rate.
What's a typical total carrying cost rate?
20-30% of inventory value per year is a widely used industry rule of thumb, though it varies by industry — perishable or fast-obsolescing goods (like electronics or fashion) often carry higher rates, while stable, non-perishable goods may carry lower rates.