Amazon FBA Storage Fee Calculator

FBA Storage Fee Estimator

Don't let storage fees eat your profit. Calculate your monthly liability.

Product Dimensions (Inches)

Triggers Long-Term Storage Fees (LTSF).

How This Tool Works

This calculator estimates your Amazon FBA Monthly Storage Liability by calculating the cubic volume of your inventory and applying seasonal rates.

  • Cubic Volume: Calculated as (Length × Width × Height) / 1,728.
  • Standard Season: Lower rates apply from January to September.
  • Peak Season: Significantly higher rates from October to December.
  • Aged Inventory: Surcharges for items stored longer than 180 days (Long-Term Storage Fees).

How to Use (Steps)

  1. Dimensions: Enter the length, width, and height of your packaged product.
  2. Quantity: Enter the average number of units you keep in stock.
  3. Select Season: Choose the current month range to get accurate rates.
  4. Calculate: See your monthly overhead per unit and for your entire stock.

Example Calculation

Scenario: 500 Units of Small Boxes (10"x8"x2").

• Total Volume: 46.3 Cubic Feet.
• Standard Rate ($0.87): $40.28 / mo.
• Peak Rate ($2.40): $111.12 / mo.
• Difference: You pay nearly 3x more during the holidays.

Why This Tool Is Accurate

Our rates are based on the latest 2025 Amazon FBA fee schedules. By calculating the exact cubic footage, we eliminate the guesswork involved in "size tier" estimates, giving you a precise dollar figure for your P&L statements.

Limitations & Disclaimer

This tool provides an estimate. Actual Amazon fees may vary based on exact weight, "dangerous goods" status, and fulfillment center location. Disclaimer: Always verify charges in your Amazon Seller Central 'Payments' report.

Frequently Asked Questions

When does Amazon FBA "Peak Season" start?

Peak season runs from October through December. During this time, storage fees significantly increase (often tripling) to account for high warehouse demand during the holidays.

How are FBA storage fees calculated?

Fees are based on the daily average volume (in cubic feet) your inventory occupies in fulfillment centers. The rate varies by product size tier and the time of year.

How can I avoid Long-Term Storage Fees (LTSF)?

To avoid aged inventory surcharges, monitor your Inventory Age report and use 'Outlet' sales, removal orders, or liquidation for items sitting for more than 180 days.