Ask ten Amazon sellers whether FBA or FBM is better, and you’ll get eleven opinions – each with a potential to turn into a heated debate.

Take one Reddit seller who spent years using FBA before giving FBM a shot. The experiment paid off:

“I have always done FBA but last couple months I tested FBM out… I actually have increased sales and have grown my Amazon store.”

Sounds like FBM is the right choice, isn’t it? Well, a few threads later, a seller with seven years of Amazon experience offered a very different perspective by leaning more towards FBA:

“If you’re building a real business yes [it’s good], if it’s just a side hustle or get rich quick scheme keep your money in your pocket.”

So which is it? Is FBA worth paying Amazon to handle the heavy lifting, or is FBM the smarter way to run the show yourself?

Merchants have been asking this question ever since Amazon ran this experiment in 2006 - when it first invited sellers to rent space in its warehouses. But twenty years later, most of the arguing is about how the box leaves, i.e., what the fees cost and whether the Prime badge is worth it. This year, the math got expensive.

Amazon raised fulfillment fees by an average of $0.08 per unit in January 2026, then stacked a 3.5% fuel and logistics surcharge on top in April. That sounds like giving away pennies... until you multiply them by a year of orders.

So, before we pick a side, let’s look at what each option actually costs you, what you gain in return, and which makes more sense for your business.

FBA vs FBM - what’s the difference?

FBA (Fulfilled by Amazon) is when you ship your inventory in bulk to Amazon’s warehouses and hand over the keys. Amazon stores it, packs every order, ships it, answers if your package does go missing. Your listings get the Prime badge automatically. The catch is that you pay for it all.  

FBM (Fulfilled by Merchant) is when Amazon acts only as the storefront. You, or a third-party warehouse you hire (3PLs), store the products and ship each order. You skip FBA fees and keep full control, but you also inherit every customer message, return and claim.

Here’s how the two options compare:

There’s a third lane, too. Seller Fulfilled Prime (SFP) which lets you ship orders yourself and still wear the Prime badge, as long as you keep hitting Amazon’s delivery-speed standards.  

What Amazon changed in 2026  

The fee bump and the fuel surcharge grabbed the headlines, but a few more subtle changes matter more to the FBA vs FBM decision.

• On the FBA side, Amazon got pickier - Amazon ended its FBA prep and labeling services in the US on January 1, 2026, so bagging, bubble-wrapping and stickering your units is now your job (or your prep center’s) before anything ships in. The low-inventory-level fee also now applies to bulky products and is measured per product variant, charging $0.32 to $1.11 per unit sold on standard-size items when you have less than 28 days of stock at Amazon. In plain English, Amazon charges you for keeping too much inventory and also for keeping too little. Goldilocks would have struggled as an FBA seller.

• On the FBM side, time is your biggest enemy - From June 29, 2026, your stated handling times have to match how fast you actually ship. For Seller Fulfilled Prime, Amazon raised the delivery-speed bar: 40% of Prime shoppers viewing a standard-size item must now do one-day delivery (the benchmark was 30% before, by the way). And the fun part is Amazon leaves weekends out of that calculation.

Seller-fulfilled orders must now use Amazon’s prepaid return labels with no exemption for high-value items, and the seller pays for return shipping depending on the reason the buyer picks. That brings us to the part of the box’s journey everyone should budget for.

The Return Leg Test

Before you pick a fulfillment method for a product, think about what if it comes back. So, it is worth knowing these four things:

FBA column might seem like the perfect fit because Amazon carries almost everything. But with FBA, you’re renting Amazon’s judgment on every return. A blender that comes back with a hairline crack in the jar can be marked sellable and shipped to the next buyer, who then leaves the one-star review on your listing. If Amazon loses or damages a unit, you’re the one filing for a reimbursement.

FBM sellers carry more work, but they get something: their own hands on every return. That’s how you catch the box that came back with a brick inside, or notice that one model keeps failing for the same problem. Patterns like those tell you when to fix a product and how to price a protection plan that actually fits it.

FBA vs FBM – which one should you pick?

Picking FBA or FBM for your entire store is like ordering one dish for the whole table. Somebody’s going to be unhappy. The sellers making the most money decide product by product, and Amazon lets you run both on the same listing as two separate offers.

Is the Prime badge worth chasing on the FBM side? Amazon’s own figure is that listings getting Prime through SFP for the first time see sales rise by more than 50% on average.  

However, my rule of thumb is start every new product in FBA only if it would pass the Return Leg Test. If one bad return could cost you a review or a warranty claim you can’t verify, keep that product close to home.

Taking the playbook to Walmart, TikTok Shop and Shopify

Every big marketplace now offers its own version of the FBA, and the Return Leg Test works on all of them.

Walmart Fulfillment Services (WFS) is Walmart’s FBA. It handles customer support and returns on those orders, and it sends unsellable returns back to an address you provide. One handy detail though: if your WFS stock runs out, orders automatically switch to seller-fulfilled, so Walmart builds in the backup offer for you. Ship it yourself and you’re held to Walmart’s minimum return rules, which include a 30-day window and, in most cases, you paying the return shipping.

Fulfilled by TikTok (FBT) is the newest platform provided fulfilment service on the block, and it’s changing the rules. TikTok switched return handling from a flat $3 per order to itemized per-unit fees. Earlier this year it announced that seller shipping would end in March, then reversed the plan in February. If a platform can nearly take the car keys away by memo, you must always keep your own fulfillment option ready for a switch.

With Shopify, you own the storefront, so you’re on FBM by default. You can rent Amazon’s warehouses through Multi-Channel Fulfillment or Buy with Prime, but both picked up Amazon’s 3.5% fuel surcharge from May. So, before you hand over a product, run the same four questions – the return leg test.  

So, which fulfillment model makes you more money?  

In the Amazon FBA vs FBM debate, the honest answer is the one that matches each product’s trip back home. FBA earns its fees on fast, sturdy products that rarely return. FBM earn their extra work on the bulky, fragile and pricey ones, where a single bad return can undo the margin of ten good sales.

Whichever way the box travels, some orders will arrive crushed and some products will break a month after delivery. Either way, that’s the moment a customer decides whether to buy from you again. Shipping insurance covers the first case, so when an order is lost or damaged in transit, you can make the buyer whole before they think about opening an A-to-z claim. A warranty covers the second, turning a product that fails later into a repair or replacement that brings the buyer back to you instead of to the marketplace. SureBright offers both, built for merchants who sell on marketplaces and on their own stores.

However the box travels, some products will still come back broken, and that can lose you a customer. It's exactly the kind of gap SureBright's shipping insurance is designed to fix. In case something turns up broken or gets stolen from your customer's porch, we handle the claim and bring the buyer back to you instead of to the marketplace.  

Think shipping problems are hurting your business reputation or your bottom line? Talk to SureBright about protecting your shipments and your sales.