FBA vs FBM 2026: Which Fulfillment Model Wins? (EU Guide)

What Is FBA (Fulfillment by Amazon)?

FBA stands for Fulfillment by Amazon. You ship your inventory to Amazon's fulfilment centres, and Amazon handles everything from that point forward: storage, picking, packing, shipping to the customer, customer service, and returns processing.

When a customer orders your product, Amazon picks it from the shelf, packs it in an Amazon-branded box, and delivers it -- often within one or two days via Prime. Your products automatically qualify for the Prime badge, which is a significant conversion driver.

In the EU, Amazon operates fulfilment centres in Germany, France, Italy, Spain, Poland, the Czech Republic, the Netherlands, and Sweden. You can store inventory in one country or distribute it across multiple countries using Pan-EU or European Fulfilment Network (EFN) programmes.

In short: You handle sourcing and listing. Amazon handles everything else.

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What Is FBM (Fulfillment by Merchant)?

FBM stands for Fulfillment by Merchant. You list your products on Amazon, but you handle all logistics yourself: warehousing, packing, shipping, customer service, and returns.

When a customer places an order, you receive the notification in Seller Central, pack the item from your own warehouse (or a third-party logistics provider), and ship it directly to the customer. You are responsible for meeting Amazon's shipping and delivery standards.

FBM sellers can still qualify for Seller Fulfilled Prime (SFP) in some markets, but the requirements are strict: one-day or two-day delivery, weekend dispatch, and consistently high metrics. For most EU sellers, SFP remains difficult to maintain.

In short: You handle everything. Amazon provides the marketplace and the customer.

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FBA vs FBM: The Complete Comparison

Here is a side-by-side comparison of the two fulfilment models across the factors that matter most:

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FBA Costs Breakdown (EU, 2026)

Understanding FBA fees is critical for profitability. Here are the main cost components for European sellers:

Fulfilment Fees

Amazon charges a per-unit fee based on the product's size and weight. For 2026, Amazon reduced fulfilment fees by an average of 0.17 EUR per unit across Europe, with an additional 0.32 EUR reduction for Germany-domestic shipments.

Examples (standard size, Germany): - Small item (up to 150g): approximately 2.50 EUR - Standard item (up to 400g): approximately 3.20 EUR - Large standard (up to 1 kg): approximately 4.50 EUR

Storage Fees

• January to September: 18.01 EUR per cubic metre per month
• October to December (peak): 24.22 EUR per cubic metre per month
• Aged inventory surcharge: Applies after 181 days, increasing at 271 and 361 days

Additional Fees to Watch

• Peak Season Fee (15 Oct -- 14 Jan): +0.26 EUR per unit
• Low-Stock Fee (new in 2026): 0.20--0.70 EUR per unit when you maintain less than 28 days of supply
• Referral fees: 8--15% of the sale price depending on category (minimum 0.30 EUR)
• Removal/disposal fees: If you need to pull inventory out of FBA

For a detailed breakdown with calculators, see our Complete Guide to FBA Fees in Europe 2026 and the FBA Calculator for Fees and Profit.

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FBM Costs Breakdown

FBM costs are less transparent because they depend entirely on your setup. Here is what to account for:

Shipping Costs

Your biggest variable cost. In the EU, shipping a standard parcel domestically costs between 3.50 and 7.00 EUR depending on carrier, volume, and negotiated rates. Cross-border shipping within the EU runs 8.00--15.00 EUR per parcel without a local fulfilment presence.

Packaging

Boxes, tape, filler material, labels, and branded inserts. Budget 0.30--1.50 EUR per unit depending on product size and whether you invest in branded packaging.

Warehousing

Whether you use a spare room, a rented storage unit, or a third-party logistics (3PL) provider. Costs vary widely, but a small warehouse in Germany runs 5--8 EUR per square metre per month.

Labour and Time

This is the hidden cost that most FBM sellers underestimate. Picking, packing, and shipping 50 orders per day is a full-time job. At 100+ orders per day, you need staff. Your time has a cost, even if you do not pay yourself a salary yet.

Returns Handling

You process returns yourself. That means receiving the item, inspecting it, restocking or disposing of it, and issuing refunds. Budget 1.50--3.00 EUR in labour and materials per return.

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Buy Box Impact: Why FBA Sellers Win -- and How FBM Sellers Fight Back

The Buy Box drives 82--90% of all Amazon sales. If you do not hold the Buy Box, you are practically invisible to most customers. This is where the FBA vs FBM decision has the most direct impact on your revenue.

FBA Gets Algorithmic Preference

Amazon's Buy Box algorithm heavily favours FBA offers. The logic is straightforward from Amazon's perspective: FBA orders are fulfilled through Amazon's own logistics network, which means predictable delivery times, consistent packaging quality, and Amazon-managed customer service. Amazon can guarantee the customer experience.

An FBA seller priced 2--3% higher than an FBM seller will often still win the Buy Box, because the algorithm weighs fulfilment reliability alongside price.

FBM Can Still Win -- With the Right Strategy

FBM sellers are not locked out of the Buy Box. But they need to compensate for the fulfilment disadvantage:

• Lower landed price (product + shipping) to offset the FBA advantage
• Excellent seller metrics: ODR below 1%, late shipment rate below 4%, valid tracking rate above 95%
• Fast shipping: One-day or two-day delivery significantly improves Buy Box eligibility
• Seller Fulfilled Prime (where available) eliminates much of the gap

This Is Where Repricing Becomes Critical

Whether you use FBA or FBM, your pricing strategy determines your Buy Box share. An FBM seller with a static price will lose to an FBA competitor almost every time. But an FBM seller with an intelligent repricer that adjusts prices in real time based on competition, Buy Box status, and margin floors can compete effectively.

For FBA sellers, repricing is equally important. Multiple FBA sellers on the same listing means the algorithm rotates the Buy Box based on price, stock levels, and seller metrics. A repricer ensures you are always positioned to win your fair share.

A repricer does not replace your fulfilment strategy -- it maximises the return on whichever model you choose. Whether you are an FBA seller protecting margins or an FBM seller fighting for Buy Box share, automated repricing is not optional in 2026.

For a deeper dive into how the Buy Box algorithm works, read our Buy Box Explained guide.

Start your free trial of arbytrage -- the repricer built for European Amazon sellers. EUR 40/month, Pan-EU support included.

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When to Choose FBA

FBA is the right choice for the majority of Amazon sellers, especially in the EU. Choose FBA when:

• You sell standard-size products that fit within Amazon's size tiers without excessive fees
• You want the Prime badge without building your own one-day delivery infrastructure
• You sell across multiple EU marketplaces and want to leverage Pan-EU or EFN
• Your inventory turns over quickly (less than 90 days average) to avoid aged inventory fees
• You are scaling and do not want logistics to be the bottleneck
• You do arbitrage or wholesale where speed and Buy Box share directly determine profitability
• Customer service and returns handling are not a core competency you want to develop

For most EU sellers doing arbitrage, wholesale, or even private label at scale, FBA is the default choice. The fees are real, but the Buy Box advantage, Prime eligibility, and operational simplicity more than compensate.

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When to Choose FBM

FBM makes sense in specific scenarios where FBA's advantages do not apply or its costs are prohibitive:

• Oversized or heavy products where FBA fees eat most of your margin (furniture, large equipment)
• Fragile or high-value items where you need control over packaging (electronics, glass, art)
• Slow-moving inventory that would accumulate aged inventory fees in FBA warehouses
• Customised or made-to-order products that cannot be pre-stocked at Amazon
• Products with strict storage requirements (temperature-controlled, hazardous materials)
• You already have a warehouse and logistics team that can match Amazon's delivery standards
• Very low price-point items where FBA fees make the unit economics impossible

FBM also makes sense as a backup strategy: if your FBA inventory runs out, having an FBM offer active keeps you on the listing while you restock.

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The Hybrid Strategy: FBA + FBM Together

The smartest sellers do not choose one or the other. They use both.

A hybrid FBA/FBM strategy means listing the same product with both fulfilment methods. Your FBA offer serves as the primary, Buy Box-winning listing. Your FBM offer serves as the safety net.

How the Hybrid Model Works

1. Primary inventory goes to FBA for Buy Box advantage and Prime eligibility
2. Secondary stock stays in your warehouse as an FBM backup
3. If FBA stock runs out, the FBM offer automatically becomes active -- you stay on the listing instead of going out of stock
4. Seasonal overflow goes to FBM when Amazon's Q4 storage limits restrict how much you can send to FBA
5. Slow movers stay FBM to avoid long-term storage fees, while fast movers go FBA

Why This Matters for Repricing

A hybrid strategy requires a repricer that understands both fulfilment methods. Your FBA offer and FBM offer on the same listing need different pricing rules: the FBA offer can be priced higher (because of the Buy Box advantage), while the FBM offer needs to be more aggressive on price.

A repricer that handles Pan-EU and multi-fulfilment scenarios is essential for executing this strategy profitably. Learn more about repricing across European marketplaces in our Pan-EU Repricing Strategy Guide.

Try arbytrage free -- smart repricing for FBA, FBM, and hybrid strategies across all EU marketplaces.

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EU-Specific: Pan-EU FBA vs EFN vs FBM Per Marketplace

Selling in Europe introduces a layer of complexity that does not exist in the US. You are not selling on one marketplace -- you are potentially selling on Amazon.de, .fr, .it, .es, .nl, .se, .pl, .be, and .co.uk. Each requires a fulfilment strategy.

Option 1: Pan-EU FBA

You send inventory to Amazon, and Amazon distributes it across fulfilment centres in multiple countries. When a customer in France orders, the item ships from a French warehouse -- fast delivery, low shipping cost.

Pros: Fastest delivery times, highest Buy Box win rates, single shipment to Amazon Cons: VAT registration required in every country where inventory is stored (typically DE, FR, IT, ES, PL, CZ), complex tax compliance

Option 2: European Fulfilment Network (EFN)

You store inventory in one country (usually Germany), and Amazon ships cross-border to customers in other EU marketplaces. No inventory distribution, so you only need VAT registration in one country.

Pros: Simpler VAT compliance, lower setup cost Cons: Slower cross-border delivery (3--5 days), higher per-unit fulfilment fees for cross-border orders, weaker Buy Box position on non-domestic marketplaces

Option 3: FBM Per Marketplace

You ship directly to customers in each country from your own warehouse or local 3PLs.

Pros: Full control, no FBA fees, no Amazon storage limits Cons: Highest operational complexity, expensive cross-border shipping without local presence, weakest Buy Box position

Which Should You Choose?

For most EU sellers scaling beyond their home marketplace:

• Start with EFN on your home marketplace to test demand in other countries
• Move to Pan-EU once volume justifies the VAT registration costs (typically 1,500--3,000 EUR per country for initial registration, plus ongoing compliance)
• Add FBM backup offers on all marketplaces for out-of-stock protection

The UK (Amazon.co.uk) is a separate consideration post-Brexit. You need a UK entity or fiscal representative, separate inventory, and UK VAT registration. FBA UK is its own programme, independent of EU Pan-EU.

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Frequently Asked Questions

Can I switch from FBM to FBA (or vice versa) at any time?

Yes. You can change your fulfilment method on any listing at any time. To switch to FBA, you create an FBA shipment and send inventory to Amazon. To switch to FBM, you simply change the offer to merchant-fulfilled. Many sellers run both simultaneously on the same listing.

Does FBA guarantee I will win the Buy Box?

No. FBA gives you a significant advantage, but the Buy Box algorithm also considers your price, seller metrics, stock levels, and shipping speed. If another FBA seller offers a lower price with equal metrics, they will win the Buy Box. This is exactly why repricing matters even for FBA sellers.

Is FBM cheaper than FBA?

It depends on your product and volume. For small, fast-moving items, FBA is often cheaper when you factor in your time, warehouse costs, and shipping rates. For large, heavy, or slow-moving items, FBM can be significantly cheaper because you avoid FBA's storage and oversize fees. Always calculate the unit economics for your specific products.

Do I need VAT registration in multiple countries for FBA in Europe?

If you use Pan-EU and Amazon stores your inventory in multiple countries, yes -- you need VAT registration in each country where inventory is held. With EFN (inventory in one country only), you may only need registration in your home country, though distance selling thresholds (the EU OSS scheme) may apply depending on your revenue per country.

Can FBM sellers get the Prime badge?

Yes, through the Seller Fulfilled Prime (SFP) programme. However, the requirements are demanding: you must offer one-day or two-day delivery, maintain a cancellation rate below 0.5%, use Amazon Buy Shipping for at least 99% of orders, and pass a trial period. SFP is available in Germany and other EU markets, but most sellers find it difficult to maintain consistently.

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The Bottom Line: It Is Not FBA *or* FBM -- It Is FBA *and* FBM

The best Amazon sellers in Europe do not pick a side. They use FBA for their core inventory to maximise Buy Box share and Prime eligibility. They use FBM as a backup for out-of-stock situations, oversized items, and slow movers. And they use a repricer to ensure every offer -- FBA or FBM -- is priced to win.

Your fulfilment strategy determines your ceiling. Your repricing strategy determines how close you get to it.

Start repricing smarter with arbytrage. Built for European sellers, Pan-EU ready, EUR 40/month. Try it free.

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Related reading: - FBA Fees in Europe 2026: Complete Comparison - FBA Calculator: Calculate Your Fees and Profit - Amazon Buy Box Explained: What It Is and Why It Decides Everything - Pan-EU Repricing Strategy Guide - Best Amazon Repricer for European Sellers 2026