Amazon FBA fees: referral (15%), fulfillment (pick & pack + weight), storage ($0.75-2.40/cuft monthly), and the net margin. What a $20 product earns after fees.
Selling on Amazon via Fulfillment by Amazon (FBA) involves three distinct fee layers that apply to every sale. The referral fee is Amazon's commission for listing in its marketplace and ranges from 8% to 15% of the total sale price, depending on the product category. The fulfillment fee covers picking, packing, and shipping the item to the customer. The storage fee is charged monthly for inventory held in Amazon warehouses, with a steep surcharge for items stored longer than 365 days.
Amazon publishes its fee schedule annually, typically with minor adjustments in January and a peak storage fee increase in October-December. The referral fee is the most significant cost for most sellers. For a product sold at $30 in the "Sports" category (10% referral fee), the referral fee alone is $3.00. Adding the fulfillment fee for a standard small item (about $4.00-$5.00) and the payment processing fee brings total Amazon fees to approximately $8-$10 per unit.
| Fee Layer | Range | Example: $30 Item |
|---|---|---|
| Referral fee | 8-15% (varies by category) | $3.00 (10%) |
| Fulfillment fee | $3.50 - $7.50+ (by size/weight) | $4.50 |
| Monthly storage | $0.75 - $2.40 per cu ft (standard) | $0.30 |
| Total Amazon fees | $7.80 - $11.00+ |
A profitable Amazon FBA business requires a net margin of at least 20-30% after all costs. The formula is: net profit = sale price - product cost - inbound shipping - Amazon fees - advertising cost - returns/allowances. For a $30 product with $7 product cost, $2 inbound shipping, $9 Amazon fees, $3 advertising, and 5% returns allowance ($1.50): net profit = $30 - $7 - $2 - $9 - $3 - $1.50 = $7.50, a 25% net margin.
The most common failure point for new FBA sellers is underestimating the total fee burden. A product that seems profitable at a 50% gross margin (COGS vs sale price) can easily drop to 15% net margin once all Amazon fees and advertising costs are included. The rule of thumb is to target a minimum sale price of 3.5-4 times the product cost to absorb Amazon fees and still leave room for profitable advertising.
Before sourcing any product, run the numbers through the Metriova Amazon FBA calculator. Input the sale price, product cost, dimensions, weight, and category. The calculator applies the current Amazon fee schedule and shows your net profit per unit and net margin. A product that delivers less than 20% net margin after all fees and a 15% advertising budget is generally not worth pursuing, because there is no room for error or price competition.
The most successful FBA sellers focus on products with a sale price between $25 and $75, which is the sweet spot where fulfillment fees are a reasonable percentage of the sale price. Below $15, the fixed fulfillment fees consume too large a share. Above $100, conversion rates drop and returns become more expensive. The Metriova calculator adjusts for all these variables and gives you a clear go/no-go decision on any product opportunity.
Amazon FBA Profit Calculator — Fees, Margin & ROI
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