BEGINNER GUIDE
Amazon FBA vs FBM: Which Should You Choose?
Every Amazon seller has to answer one question early: when someone buys your product, who ships it, Amazon or you? That is the difference between FBA and FBM, and it shapes your fees, your workload, and your margins. There is no universal winner. The right answer comes from running your own product’s size, weight, price, and margin through both scenarios. Here is how to do that, and how to decide.
The short answer
FBA (Fulfillment by Amazon) means you send inventory to Amazon, and Amazon stores, picks, packs, ships, and handles most customer service and returns, and your product gets the Prime badge. FBM (Fulfillment by Merchant) means you store and ship everything yourself and handle your own customer service. FBA wins for small, light, fast-moving products where the Prime badge lifts sales. FBM wins for large, heavy, bulky, or low-volume products where Amazon’s fees would be punishing. Most private-label sellers use FBA, but you should run the numbers for your specific product rather than assume.
What is FBA?
FBA stands for Fulfillment by Amazon. You send your inventory to Amazon’s warehouses, and from there Amazon stores it, picks and packs each order, ships it, and handles most customer service and returns. Your products get the Prime badge, which tends to lift conversion because shoppers trust fast, free Prime delivery.
The trade-off is fees. Amazon charges fulfillment fees per unit based on size and weight, plus storage fees based on how much space your inventory takes and how long it sits. These change periodically, and they rose in 2026, so always check current rates before you build your numbers.
What is FBM?
FBM stands for Fulfillment by Merchant. You keep your inventory wherever you store it, and when an order comes in, you pick, pack, ship, and handle customer service and returns yourself, either directly or through a third-party fulfillment service.
You avoid Amazon’s fulfillment and storage fees, and you keep full control over inventory and packaging. The cost is your time, your own shipping expense, and the fact that earning the Prime badge through Seller Fulfilled Prime requires meeting strict performance standards.
FBA vs FBM, side by side
Here is the honest comparison on the things that actually change your decision.
FBA vs FBM
| FBA | FBM | |
|---|---|---|
| Who ships | Amazon | You |
| Prime badge | Yes, automatic | Only via Seller Fulfilled Prime |
| Fulfillment and storage fees | Yes, per unit and per volume | None to Amazon; your own costs instead |
| Your workload | Low, Amazon handles logistics | High, you handle everything |
| Best product type | Small, light, fast-moving | Large, heavy, bulky, or slow-moving |
| Control over packaging | Limited | Full |
The honest cost comparison
Neither option is cheaper in every case. FBA fees can eat a meaningful chunk of margin on heavy or bulky items, but they also remove the cost and labour of you doing the shipping. FBM avoids those specific fees but adds your own fulfillment costs, which on small light items can actually be higher per order than Amazon’s rates once you account for your time.
The only reliable way to know is to run both scenarios for your specific product, with its real weight, size, and price. Do not assume one is cheaper. Calculate it. A Profit Planner that breaks down every Amazon fee makes this a two-minute job instead of a spreadsheet afternoon.
When each one makes sense
FBA tends to win when
- The product is small, light, and fast-moving, so per-unit fees stay low
- You want the Prime badge to drive extra conversions
- You would rather not handle logistics yourself
- You are selling at enough volume that shipping it yourself would consume your week
- You are building a hands-off private-label business
FBM tends to win when
- The product is large, heavy, or bulky, where FBA fees would be punishing
- Volume is low or the product is slow-moving
- The item is handmade or made to order
- Margins are thin and every fee matters
- You already have your own efficient shipping setup
Can you use both?
Yes, and many sellers do. You can run most of your catalogue on FBA while keeping oversized or slow items on FBM. Some sellers also keep an FBM backup listing so they can keep selling if their FBA stock runs out. The two are not mutually exclusive across your business, only per listing at a given time.
How to decide
Work through a few questions. How big and heavy is the product, since that drives FBA fees hardest? What are your margins, and can they absorb fulfillment fees? How much volume do you expect, and would shipping it yourself be realistic? How much do you value the Prime badge for conversion? And how much of your own time can you put into logistics?
If it is small, light, profitable, and you would rather not touch shipping, FBA. If it is large, heavy, low-margin, or low-volume, run the FBM numbers before defaulting to FBA. This decision sits inside the bigger picture of how to sell on Amazon, and it is worth getting right early because it shapes your margins on every unit.
The takeaway
FBA hands the logistics to Amazon for a fee and gives you the Prime badge. FBM keeps the work and the control with you and avoids those specific fees. There is no universal winner. The right answer comes from running your actual product’s size, weight, price, and margin through both scenarios and seeing which keeps more money in your pocket. Before you even get here, though, the bigger decision is choosing a product worth selling at all, which is where our guide to finding products to sell on Amazon comes in.
Frequently asked questions
Is FBA or FBM more profitable?
It depends entirely on the product. FBA fees hurt most on heavy, bulky, or low-priced items, while FBM can be cheaper there but adds your own shipping cost and time. On small, light, fast-moving products, FBA is often more profitable once you account for the value of your time and the Prime badge. Run both calculations for your specific product before deciding.
Does FBM get the Prime badge?
Only through Seller Fulfilled Prime, which requires meeting Amazon’s strict delivery and performance standards. Standard FBM listings do not carry Prime, which can reduce conversion compared with an FBA listing.
Which is better for beginners?
Most beginners selling small private-label products choose FBA because it removes the logistics burden while they learn everything else. Heavy or bulky first products are the main reason a beginner might consider FBM instead.
Can I switch between FBA and FBM later?
Yes. You can change a listing’s fulfillment method, so you are not locked in. Many sellers adjust as their products and volumes change, and some run both at once across different listings.
Are FBA fees going up in 2026?
Amazon restructured FBA fulfillment fees upward in January 2026 and added a fuel and logistics surcharge in April 2026, and storage fees rose too. The increases are small per unit but they compound across every sale, so always check current rates and build them into your margins before choosing FBA.