Your single carrying-cost rate split into the three buckets it bundles, using a typical weighting — capital, storage, and risk — applied to your average inventory value. The split is illustrative; your own mix depends on warehouse costs, financing, and how perishable or obsolescence-prone the goods are.
Component
Typical share of the rate
Annual cost (local currency)
Cost of capital
~50% (tied-up cash, financing)
6250
Storage & handling
~30% (space, labour, utilities)
3750
Risk: insurance, shrinkage, obsolescence
~20%
2500
Total annual carrying cost ◀
100% of the rate
12500
Estimates only — not financial, tax, or professional advice.
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What it calculates: Annual Carrying Cost, Monthly Carrying Cost, Carrying Cost Rate.
Carrying cost has four parts. Capital is the return the money could have earned elsewhere and is usually the largest. Storage covers space, handling and utilities. Service covers insurance and stock taxes. Risk covers obsolescence, damage, theft and markdown.
Carrying cost = average inventory value × carrying cost rate (storage + capital + risk + obsolescence)
Businesses that count only storage typically arrive at around 5% and understate the real figure by a factor of three or four. Published estimates cluster between 15% and 30% of inventory value a year.
Money in stock is money not doing anything else
Capital cost is the opportunity cost of the cash tied up. If the business borrows at 12%, or could deploy the money into marketing returning more than that, then every unit of stock carries that rate whether or not anyone invoices for it.
Because no supplier bills for it, it is the component most often left out — and it is the one that makes overstocking genuinely expensive rather than merely untidy.
The figure to use is the mean across the period
Carrying cost applies to stock held over time, so the input is average inventory value rather than a snapshot. A simple average of opening and closing balances works; a monthly average is better for a seasonal business.
Using a peak figure overstates the cost and a trough figure understates it, and for a business with a heavy seasonal build the two can differ by several multiples.
It prices every other inventory decision
This rate is the input that makes EOQ, safety stock sizing and dead stock decisions quantitative rather than instinctive. Without it, holding stock appears free and every ordering decision defaults to ordering more.
It is also the number that makes the case for faster turns. Halving average inventory at a 20% carrying rate returns 10% of the old stock value to the business every year, permanently.
Frequently Asked Questions
What is inventory carrying cost?
It is the total cost of holding stock over a period. It bundles storage and handling, the capital tied up in inventory, insurance, shrinkage, and the risk of obsolescence, usually expressed as a percentage of inventory value.
What is a typical carrying cost rate?
Many businesses use a rate in the range of 20 to 30 percent of inventory value per year, but it varies. Bulky, perishable, or fast-changing products carry higher rates, while compact, stable goods can be lower. Estimate your own from actual costs.
What goes into the carrying cost rate?
Storage and warehouse costs, the opportunity cost of capital locked in stock, insurance, taxes, shrinkage from theft or damage, and obsolescence. Adding these as a share of inventory value gives the rate you plug into the formula.
How can I reduce carrying cost?
Hold less inventory by improving forecasting, ordering more frequently in smaller quantities, clearing dead stock, and negotiating shorter lead times. Each lowers the average value on hand, which directly reduces carrying cost.
Is carrying cost the same as storage cost?
No. Storage is only one part. Carrying cost is broader, also covering tied-up capital, insurance, risk, and obsolescence. Treating it as rent alone significantly understates the true cost of holding inventory.
How does carrying cost relate to order quantity?
Carrying cost is a key input to economic order quantity, which balances it against ordering cost. Higher carrying cost favours smaller, more frequent orders, while lower carrying cost favours larger, less frequent ones.
Sources & References
Figures on this page are checked against primary, authoritative sources. Links open in a new tab.
The carrying cost rate genuinely reflects your storage, capital, insurance, and obsolescence costs.
Average inventory value is representative of the level held across the year.
The rate is applied uniformly, though it can differ by product or warehouse in reality.
Figures are for general analysis and educational use.
Where it stops
Carrying cost rates vary widely by industry and product; a generic rate may not fit your situation.
It treats carrying cost as a single percentage rather than itemising each component.
It uses average inventory, so seasonal peaks in stock are not separately reflected.
It does not weigh carrying cost against the revenue benefits of higher availability.
Related Calculators
Economic Order QuantityThe order size that minimises ordering and holding cost together, with the total that results.
Inventory InvestmentThe cash a target days-of-cover absorbs, from monthly cost of goods and your safety stock value.
Working CapitalCurrent assets minus current liabilities, measured against what your cash conversion cycle actually requires.
Cash Conversion CycleWork out the days between paying suppliers and being paid by customers, on one consistent day basis, then see what each day is worth in cash.
DSODays sales outstanding by the simple ratio and by countback, with the floor your payment terms set separated from genuine lateness.
DIODays of stock on hand against cost of goods sold, with the turnover it implies and the revenue-denominator mistake priced beside it.
DPODays payable outstanding on COGS or on derived purchases, with the annualised cost of skipping an early-payment discount.
Sell-Through RateThe share of received stock that sold in a period, with the daily rate and units still on hand.
Results are estimates for planning and analysis based on the figures you enter. They are not accounting, tax, or financial advice — verify with your own records and a qualified professional before making decisions.
Built and maintained by Jay Sudha, who runs a rice mill and trading business in Kashipur, India, and works with pricing, margins, working capital and bank credit as part of it.
Published the calculator with its formula, worked example, assumptions, limitations and a bespoke guide, and added an automated formula test suite covering it.
Tested the annual carrying cost as a rate on average inventory value, with the monthly figure derived from it.
Tested that monthly cost is always a twelfth of annual and that both scale linearly with the rate.
Frequently Asked Questions now show on the page: 6 answers, checked in a page-by-page audit.
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