An FBA seller is someone who sells products on Amazon but lets Amazon handle storage, packing, shipping, and customer service. FBA stands for Fulfillment by Amazon, and it’s the most popular way independent sellers move products through the platform. You source and list the products; Amazon does the physical work of getting them to buyers.
How the FBA Model Works
The process starts with you registering for an Amazon seller account and opting into FBA. Once enrolled, you ship your inventory to one of Amazon’s fulfillment centers, following their guided workflow for preparing, packing, and labeling each shipment. Amazon receives and stores your products in their warehouses.
When a customer places an order, Amazon picks the item from the shelf, packs it, and ships it directly to the buyer. They also handle customer service inquiries and process returns on your behalf. From the buyer’s perspective, the experience looks identical to purchasing a product sold by Amazon itself.
This is the core appeal: you don’t need warehouse space, packing supplies, or a shipping operation. A single person running a business from a spare bedroom can sell thousands of units a month because Amazon’s logistics network does the heavy lifting.
What FBA Sellers Are Still Responsible For
Outsourcing fulfillment doesn’t mean outsourcing everything. As an FBA seller, your job revolves around the decisions Amazon can’t make for you.
- Product sourcing: You find or create the products you want to sell, whether that means buying wholesale, manufacturing a private-label product, or doing retail arbitrage (buying discounted items from other retailers to resell).
- Listing creation and optimization: You write product titles, descriptions, and bullet points, upload photos, and set prices. You can also adjust pricing to stay competitive with other sellers offering the same item.
- Inventory management: You create shipping plans to send stock to Amazon, monitor inventory levels, set low-stock alerts, and decide when to reorder. If products become unsellable (damaged or expired, for example), you need to request that Amazon return or dispose of them.
- Advertising: Amazon offers paid tools like Sponsored Products to promote your listings in search results. Running and optimizing these campaigns falls on you.
- Multi-channel orders: If you also sell on your own website or another marketplace, you can submit those orders to Amazon for fulfillment too, though additional fees apply.
Think of FBA as splitting the business in two. You own the commercial side (what to sell, how to market it, how to price it). Amazon owns the operational side (storing, shipping, handling returns).
FBA Fees and Costs
Amazon charges FBA sellers several layers of fees. Understanding them is critical because they directly eat into your profit margins.
Fulfillment fees are charged per unit when an order ships. The rate depends on the product’s size tier and shipping weight, so a small, lightweight item costs far less to fulfill than a bulky one. Amazon publishes rate cards broken down by size category, and they update them periodically. Starting April 17, 2026, Amazon is applying a 3.5% fuel and logistics surcharge on top of standard fulfillment fees.
Referral fees are a percentage of the selling price that Amazon takes on every sale, regardless of whether you use FBA. The percentage varies by product category but commonly falls in the 8% to 15% range.
Monthly storage fees are charged based on the volume of space your inventory occupies in Amazon’s warehouses. Rates are higher during the holiday peak season (October through December) and lower the rest of the year. Letting slow-moving inventory sit in a fulfillment center for months gets expensive.
A simple example: if you sell a small product for $25, you might pay roughly $3 to $5 in fulfillment fees, $3 to $4 in referral fees, plus a fraction of a dollar in monthly storage. That leaves you with around $16 to $19 before accounting for your product cost, shipping to Amazon, and advertising spend. Margins vary widely depending on the product, but most successful FBA sellers aim for at least a 20% to 30% net margin after all fees.
The Prime Badge Advantage
One of the biggest reasons sellers choose FBA is Prime eligibility. Products fulfilled by Amazon automatically get the Prime badge, which signals to buyers that the item qualifies for fast, free shipping. Prime members, who number in the hundreds of millions globally, frequently filter search results to show only Prime-eligible items. Without that badge, your listing may never appear for a large segment of shoppers.
Sellers who don’t use FBA can technically earn Prime eligibility through a program called Seller Fulfilled Prime, but the bar is high. You need a Professional selling account, must meet strict performance requirements, and have to complete a 30-day trial proving you can consistently deliver on Prime shipping promises from your own facility. Most small sellers find FBA far simpler.
FBA vs. Fulfilling Orders Yourself
The alternative to FBA is Fulfillment by Merchant (FBM), where you store inventory and ship orders directly to customers from your own location. FBM gives you more control: you set your own packaging, handle returns your way, and avoid Amazon’s storage fees. It can be cheaper for large, heavy, or slow-moving products where Amazon’s per-unit fees would be steep.
FBA makes more sense when you want a hands-off operation, sell lightweight products with healthy margins, or need the Prime badge to compete. Many experienced sellers use both methods, putting their best-selling, fast-moving items in FBA and fulfilling niche or oversized products themselves.
What You Need to Get Started
To register as an Amazon seller and enroll in FBA, you need to be a resident of one of the countries Amazon supports for seller registration. The account setup requires a bank account number and routing number, a chargeable credit card, a government-issued ID, your phone number, and tax information. U.S.-based sellers complete a W-9 form during registration, while non-U.S. sellers fill out a W-8BEN. Amazon may also ask for scanned copies of a passport, bank statement, or credit card statement for verification.
Amazon offers two account tiers. The Individual plan charges $0.99 per item sold and works for people testing the waters with low volume. The Professional plan costs $39.99 per month with no per-item fee, making it the better choice once you’re selling more than about 40 items a month. Both plans can use FBA, but many FBA-specific tools and advertising features are only available on the Professional plan.
Who FBA Works Best For
FBA sellers range from side hustlers selling a handful of products to large brands pushing millions in annual revenue. The model works particularly well for people who don’t have (or don’t want) warehouse space, who sell products small and light enough to keep fulfillment fees manageable, and who value the traffic boost that comes with Prime eligibility. It’s also popular with sellers who want location independence, since Amazon handles the physical logistics no matter where you live.
The tradeoff is cost and control. You’re paying Amazon to do work you could theoretically do cheaper yourself, and you’re subject to Amazon’s rules on packaging, labeling, and inventory limits. For many sellers, that tradeoff is worth it because it lets them focus on finding profitable products and growing sales rather than taping boxes and standing in line at a shipping carrier.