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Inventory Carrying Cost What does a year of stock cost?

Enter your average inventory value, annual storage, cost of capital and risk rate: the yearly cost of holding stock, the carrying rate, the monthly figure and, if you like, the cost per unit — on one screen.

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Last updated:

$6,600
Example yearly carrying cost
26.4%
Carrying rate
$550
Per month
sellerniche.com/dashboardPREVIEW
🏷️Inventory Carrying CostOVERVIEW
Yearly carrying cost$6,600
Carrying rate26.4%
Per month$550
Sample view — your own data after sign-inSeller Niche
Inventory Carrying Cost
LIVE
Work out the Amazon storage fee →
ⓘ Rounding: money lines are rounded to the nearest cent, and the total on screen is the sum of the lines on screen. The marketplace's own rounding can differ by a cent per line; in tiered rate cards the direction of that difference is not guaranteed.
Annual inventory carrying cost$6,600.00
Carrying rate (of inventory value)
26.4%
Per month
$550.00
Capital
$2,000.00
Storage
$3,600.00
Risk
$1,000.00
Show the math
Capital = Average inventory value — at cost × Cost of capital
= $25,000.00 × 8% = $2,000.00
Risk = Average inventory value — at cost × Risk: shrink, obsolescence, insurance
= $25,000.00 × 4% = $1,000.00
Annual inventory carrying cost = Capital + Annual storage cost + Risk
= $2,000.00 + $3,600.00 + $1,000.00 = $6,600.00
Carrying rate = Annual inventory carrying cost ÷ Average inventory value — at cost
= $6,600.00 ÷ $25,000.00 = 26.4%
Written with the on-screen (rounded) figures; the last digit may differ by ±1 from rounding.
Carrying cost = average inventory × capital rate + annual storage + average inventory × risk rate. Add the rate to product cost and you see the real price of holding stock for a year: at a 20% carrying rate a $10 item costs ~$2 to hold for a year. Amazon's aged inventory surcharge comes ON TOP of storage — compare keeping with removal/disposal in the removal order fee calculator.
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The problem

The storage fee is only half of it.

Beyond warehouse rent, stock carries the interest on the money tied up and the risk of shrink and obsolescence; leave it out of unit cost and profit looks higher than it is.

🏦

Cost of capital

Money in stock means interest or a lost return.

🏬

Storage

Amazon monthly storage + your own warehouse/3PL.

⚠️

Risk

Shrink, obsolescence, damage and insurance.

Features

Three parts, one rate.

🧾

Component breakdown

Capital, storage and risk on separate lines; the total is their sum.

📊

Carrying rate

Yearly cost as a share of inventory value.

🔢

Per unit

Enter units on hand for the yearly cost per unit.

💱

Any currency

Pure math; pick your own currency.

How it works?

1️⃣

Enter inventory value

The average, at cost.

2️⃣

Enter storage

Twelve months of storage spend.

3️⃣

Enter the rates

Cost of capital and risk percentage.

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Frequently Asked Questions

See the real price of holding stock.

With an account: the inventory and profit dashboards carry storage fees into net profit per product.

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