Amazon FBA Fee Calculator
Fulfillment by Amazon charges referral fees, FBA fulfillment fees, and monthly storage fees.
What Are Amazon FBA Fees?
Amazon FBA (Fulfillment by Amazon) fees are the costs you pay when Amazon stores, picks, packs, and ships your products on your behalf. The three main components are the referral fee, the FBA fulfillment fee, and the monthly inventory storage fee. The referral fee is a percentage of the total sale price — typically 15% for most categories, though it ranges from 8% for consumer electronics to 45% for Amazon device accessories. This fee is unavoidable for every FBA seller.
The FBA fulfillment fee covers the labor and logistics of picking your item from the warehouse shelf, packing it into a box, and shipping it to the customer. For a standard-size item under one pound, this starts at roughly $3.22 but scales with weight and dimensions. Oversized items can incur fulfillment fees of $9 or more per unit. Additionally, Amazon charges monthly inventory storage fees — currently $0.87 per cubic foot from January through September, jumping to $2.40 per cubic foot during the Q4 peak season (October–December).
Beyond these core fees, FBA sellers should also account for potential aged-inventory surcharges on stock sitting longer than 181 days, removal or disposal fees if you need to pull inventory out, and the cost of shipping products to Amazon's fulfillment centers (inbound placement fees). Together, these costs can consume 30–40% of your sale price, making accurate fee calculation essential before sourcing any product.
Why Amazon FBA Fees Matter
Understanding the full fee picture prevents costly surprises
Fulfillment Costs Add Up Fast
FBA fulfillment fees are charged per unit sold and scale with item size and weight. A few ounces of extra packaging can push you into a higher fee tier, eroding your margin on every single order.
Storage Fees Punish Slow Sellers
Monthly storage fees triple during Q4, and aged-inventory surcharges kick in after 181 days. If your products sit too long, you pay Amazon to warehouse unsold stock — a hidden cost that catches new sellers off guard.
Category Referral Rates Vary Widely
Referral fees range from 8% to 45% depending on your product category. Selling in a high-fee category like clothing (17%) vs. consumer electronics (8%) can mean thousands of dollars in difference over a year.
Margins Determine Product Viability
With total FBA fees often consuming 30–40% of the sale price, the difference between a profitable product and a money-loser often comes down to a dollar or two. Accurate fee modeling is the foundation of smart sourcing.
Calculate Your Amazon FBA Fees
Enter your product details to see your exact fees and profit
Enter Product Details
Fee Breakdown
Your Profit
$9.40
31.3% margin
Amazon FBA Fee Structure
Complete breakdown of all fees and rates
Amazon FBA Fee Structure
Referral / Commission Fee
Fulfillment Fee
Per unit (standard size)
Monthly Storage Fee
Per cubic foot (Jan–Sep)
Tips to Maximize Your Amazon FBA Profit
Optimize Your Packaging Dimensions
Amazon's fulfillment fees are tiered by size and weight. Reducing your package dimensions by even half an inch can drop your product into a lower fee tier. Use Amazon's FBA Revenue Calculator to test different packaging configurations before committing to a design — the savings compound across every unit you sell.
Plan Inventory Around Storage Fee Seasons
Monthly storage fees jump from $0.87 to $2.40 per cubic foot in Q4 (October–December). Ship inventory to FBA in smaller, more frequent batches during peak season rather than stockpiling months in advance. Pair this with removal orders for slow-moving stock before October 1 to avoid paying holiday-rate storage on products that aren't selling.
Frequently Asked Questions
Other Fee Calculators
Compare fees across different marketplaces