Amazon FBA Fee Calculator
Fulfillment by Amazon charges referral fees, FBA fulfillment fees, and monthly storage fees.
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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. Since January 2026, fulfillment fees are also banded by item price: they start around $2.43 for items priced under $10 and $3.32 for most standard-size items, scaling with weight and dimensions, and a 3.5% fuel surcharge applies from April 2026. Large bulky items can incur fulfillment fees of $9 or more per unit. Additionally, Amazon charges monthly inventory storage fees, currently $0.78 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 (now price-banded: 5% up to $15, 10% from $15 to $20, 17% above $20) 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 Product Details
Fee Breakdown
Your Profit
$9.39
31.3% margin
Estimates are based on item price only. Marketplaces may also apply fees to buyer-paid shipping and tax, and rates vary by category and promotions. Confirm current rates with each marketplace.
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 $0.78 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
The most common referral fee is 15%, which applies to the majority of product categories including Home & Kitchen, Toys, Sports, and Health & Personal Care. However, rates range from 8% (consumer electronics, personal computers) up to 45% (Amazon device accessories). Always check the fee schedule for your specific category before calculating margins.
FBA fulfillment fees are based on the item's shipping weight (product weight plus packaging) and its dimensional size tier. Since January 2026, fees are also banded by item price: items priced under $10 start around $2.43 per unit, while most standard-size items start around $3.32. As weight and size increase, the fee rises. A 2 lb standard-size item costs roughly $5.82 to fulfill. Large bulky items start around $9.35 and go up from there.
Amazon charges standard monthly storage rates of $0.78 per cubic foot from January through September. From October through December, that rate jumps to $2.40 per cubic foot for standard-size items, nearly three times the off-peak rate. This increase reflects higher warehouse demand during the holiday shopping season.
If your inventory sits in Amazon's fulfillment centers for more than 181 days, you start incurring aged-inventory surcharges (formerly called long-term storage fees). These charges increase the longer stock remains unsold, with steep penalties after 271 and 365 days. To avoid them, monitor your inventory age regularly, run promotions on slow movers, and use removal orders to pull aging stock before surcharges kick in.
When a customer returns an FBA item, Amazon refunds your referral fee minus a processing deduction, but you do not get the FBA fulfillment fee back. Amazon already performed the pick, pack, and ship work. If the returned item is in sellable condition, it goes back into your inventory. If it's unsellable, you may need to pay a disposal or removal fee on top of the lost fulfillment cost.
Inbound shipping costs depend on your shipping method and where Amazon directs your inventory. Amazon's partnered carrier program often provides discounted rates starting around $0.30 per unit for small standard-size items. However, Amazon may split your shipment across multiple fulfillment centers. Inbound placement fees apply if you want to send everything to one location, typically $0.14 to $1.90 per standard-size unit depending on size (large bulky units can run up to $6.50).
A calculator estimates one sale; your books have to capture every sale. Each Amazon settlement bundles orders, referral fees, FBA fees, storage charges, refunds, and reserves into one deposit, so tracking fees accurately means splitting every settlement back into its parts. Futureproof does this automatically: its Amazon integration connects directly, booking every order, fee, and payout into one ledger so your margin per SKU comes from actual accounting, not estimates.
Other Fee Calculators
Compare fees across different marketplaces
Fees are only one leak. Our guide to ecommerce accounting covers COGS, settlements, and the P&L that shows what you actually keep per sale.
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