Choosing between FBA vs. FBM is a pivotal decision for Amazon sellers aiming to optimize fulfillment, costs, and customer experience. Each model offers unique benefits depending on your business size, product type, and logistics capabilities. In this guide, we explore the key differences between Fulfillment by Amazon (FBA) and Fulfillment by Merchant (FBM). Let’s help you decide which method aligns best with your eCommerce strategy.
What are Amazon FBA and FBM?
Amazon offers two primary fulfillment methods for sellers: Fulfillment by Amazon (FBA) and Fulfilled by Merchant (FBM). Understanding these options is crucial for optimizing logistics and enhancing customer satisfaction:
What is fulfillment by Amazon FBA
Fulfillment by Amazon FBA is a comprehensive logistics service that enables sellers to outsource key supply chain functions – such as storage, picking, packing, shipping, customer service, and returns – to Amazon’s fulfillment network. By enrolling in FBA, businesses can send inventory to Amazon’s strategically located warehouses, where orders are processed and shipped directly to customers.
As part of the broader Supply Chain by Amazon ecosystem, FBA not only streamlines operations and reduces overhead but also grants sellers access to Prime eligibility – offering fast, free delivery that boosts customer satisfaction and sales performance.

What is fulfillment by Merchant – Amazon FBM
Fulfillment by Merchant (FBM) is a logistics model in which sellers manage the entire fulfillment process independently, from maintaining inventory to packing and shipping orders directly to customers. Instead of utilizing Amazon’s fulfillment network, FBM sellers operate from their own warehouses or facilities while still listing products on the Amazon marketplace. This approach offers greater control over inventory, shipping methods, and customer experience, while also allowing access to Amazon’s e-commerce tools and infrastructure to support online sales operations.

What are the differences between FBA & FBM?
When comparing FBA and FBM, several key differences emerge:
FBA vs FBM
- Control: FBA provides less control over inventory management and fulfillment processes, as these are handled by Amazon. FBM allows sellers to maintain full control over their inventory and shipping methods.
- Cost structure: FBA involves various fees, including storage and fulfillment fees, which can add up, especially during peak seasons. FBM typically has lower upfront costs, but sellers must manage their own shipping expenses.
- Customer experience: FBA offers a seamless customer experience with fast shipping and easy returns, which can lead to higher customer satisfaction. FBM may require more effort to ensure a similar level of service.
What are the differences between FBA and FBM sellers?
When evaluating the differences between FBA and FBM sellers, consider the following aspects:
- Which is more profitable? – FBA can be more profitable for high-volume sellers due to Amazon’s logistics efficiencies and access to Prime customers. However, FBM may be more profitable for sellers with lower volumes or those who can negotiate better shipping rates.
- Which sellers get started selling faster? – FBA sellers often get started faster because they can leverage Amazon’s infrastructure and customer base immediately. FBM sellers may take longer to establish their logistics and fulfillment processes.
- Which method requires less time to manage? – FBA requires less time to manage since Amazon handles most of the fulfillment tasks. FBM requires more hands-on management, including shipping and customer service.
- What are the top product categories for FBA and FBM? – FBA is particularly effective for categories like electronics, toys, and household goods, where fast shipping is a significant selling point. FBM is often used for niche products or items that require special handling, such as oversized or fragile goods.

What fulfillment method do you use for your Amazon business?
The two primary fulfillment methods available to sellers are FBA vs FBM. Each method has its unique advantages and is suited for different types of sellers and products.
Sellers who should use the FBA method
FBA is ideal for sellers who want to streamline their operations and leverage Amazon’s extensive logistics network. Here are some characteristics of sellers who should consider using FBA:
- High sales volume: Sellers with a high sales velocity benefit from FBA’s efficient fulfillment processes, which can handle large order volumes seamlessly.
- Limited time for fulfillment: Those who prefer to focus on other aspects of their business, such as marketing and product development, rather than managing logistics, will find FBA advantageous.
- Small, lightweight products: FBA is particularly effective for small and lightweight items, as the associated fees are generally lower for these products.
- Access to Amazon prime customers: Sellers looking to increase their visibility and sales potential should consider FBA, as it allows products to be eligible for Amazon Prime, attracting a larger customer base.
Sellers who should use the FBM method
FBM may be more suitable for sellers who prefer greater control over their fulfillment processes. Here are some scenarios where FBM is a better fit:
- Niche or specialty products: Sellers offering unique or specialized items that require specific handling or packaging may find FBM more beneficial.
- Lower sales volume: For sellers with lower sales velocity, FBM can be more cost-effective, as it avoids the storage fees associated with FBA.
- Established logistics network: Sellers who have their own reliable shipping and logistics solutions can effectively manage fulfillment through FBM, allowing for customized shipping options.
- Desire for direct customer interaction: FBM allows sellers to engage directly with customers, providing personalized service and support, which can enhance customer relationships.

Can Amazon sellers use both FBA and FBM?
Yes, Amazon sellers can utilize both FBA and FBM to optimize their fulfillment strategies. This hybrid approach allows sellers to take advantage of the strengths of each method, catering to different product types and customer needs.
For instance, a seller might use FBA for fast-moving items that benefit from Prime eligibility while using FBM for slower-moving or specialized products that require more control over the fulfillment process. This flexibility can help sellers maximize their operational efficiency and profitability.
7 Factors to consider: Which fulfillment method should you choose?
When deciding between FBA vs FBM, several critical factors should be evaluated to determine the most suitable fulfillment method for your business. Each factor can significantly impact your operational efficiency, customer satisfaction, and overall profitability.
Item size/weight
The size and weight of your products play a crucial role in determining the appropriate fulfillment method. FBA is generally more advantageous for small, lightweight items, as the associated fees are lower and the logistics are streamlined. Conversely, larger or heavier items may incur higher storage and shipping costs with FBA, making FBM a more cost-effective option for such products.
Control of customer experience
FBA allows Amazon to handle customer service, returns, and shipping, which can lead to a more standardized customer experience. However, this means sellers have less direct control over interactions with customers. In contrast, FBM gives sellers complete control over the fulfillment process, allowing for personalized customer service and tailored communication, which can enhance customer relationships.

Seller feed back
Seller feedback is vital for maintaining a positive reputation on Amazon. FBA sellers benefit from Amazon’s customer service handling most transactions, which can reduce the risk of negative feedback. FBM sellers, however, must be diligent in managing their shipping speed and product quality to maintain high ratings, as they are directly responsible for customer satisfaction.
Turnover rates
Inventory turnover rates are essential to consider when choosing a fulfillment method. FBA sellers face storage fees that increase after 180 days, which can be detrimental for products with slow turnover. FBM may be more suitable for sellers with slower-moving inventory, as it allows for more flexible storage options without incurring high fees.
Logistics
Logistics capabilities play a crucial role in determining the right fulfillment method for your business. FBA offers access to Amazon’s powerful logistics infrastructure, which ensures streamlined packing, shipping, and returns handling. This allows sellers to offload operational burdens and focus more on growth strategies, marketing, and customer engagement.
However, for businesses with established logistics systems or unique shipping needs, Fulfilled by Merchant (FBM) provides greater flexibility. Sellers can customize shipping options, maintain control over packaging, and potentially reduce fulfillment costs. Ultimately, the decision hinges on your logistics maturity and desired level of operational control.
Fees
Understanding the fee structures of both FBA vs FBM is essential for profitability. FBA involves various fees, including storage and fulfillment costs, which can accumulate quickly, especially during peak seasons. FBM sellers avoid these fees but must manage their own shipping and storage costs, which can vary based on their logistics arrangements.

Prime badge
The Prime badge is one of the most valuable benefits of using Fulfillment by Amazon (FBA). Products enrolled in FBA are automatically eligible for Amazon Prime, which grants them access to millions of loyal Prime members who prioritize fast, free shipping. This badge significantly enhances product visibility and can greatly boost conversion rates.
While FBM sellers can also earn the Prime badge through the Seller-Fulfilled Prime program, participation requires strict adherence to Amazon’s shipping performance metrics. These include fast delivery times, reliable tracking, and low cancellation rates. Achieving and maintaining SFP status can be challenging but offers similar exposure benefits.
Amazon FBA vs FBA costs
Each fulfillment method has its own set of costs that can significantly affect your bottom line:
Amazon FBA cost
FBA operates on a pay-as-you-go model, where sellers incur various fees based on their product characteristics and storage needs. The primary costs associated with FBA include:
- Fulfillment fees: These fees are charged per unit and vary based on the size and weight of the product. For example, small standard items may incur fees starting at approximately $3.06, while larger items can have fees that exceed $9.00 depending on their weight.
- Storage fees: Sellers are charged monthly storage fees based on the volume of inventory stored in Amazon’s fulfillment centers. These fees can increase during peak seasons, making it crucial for sellers to manage their inventory turnover effectively.
- Returns processing fees: If a customer returns a product, FBA sellers may also incur additional fees for processing these returns.
Amazon FBM cost
FBM costs are primarily determined by the seller’s own logistics and fulfillment processes. Key components of FBM costs include:
- Shipping costs: Sellers are responsible for all shipping expenses, which can vary widely based on the shipping method and carrier used. Utilizing Amazon’s Buy Shipping service can help reduce these costs by providing discounted rates.
- Storage costs: Unlike FBA, FBM sellers manage their own inventory storage, which can lead to lower overhead costs if they have the capacity to store products efficiently.
- Referral fees: Similar to FBA, FBM sellers must pay Amazon referral fees, which typically range from 15% of the sale price, depending on the product category.
- Customer service and returns: FBM sellers are also responsible for handling customer service inquiries and processing returns, which can add to operational costs if not managed efficiently.

Simplify FBA/FBM: Fast, Efficient, and Affordable with Keys Logistics
Navigating between Fulfillment by Amazon (FBA) and Fulfilled by Merchant (FBM) models requires flexible logistics support – and that’s where Keys Logistics delivers. Our 3PL fulfillment services empower e-commerce businesses to streamline their order handling through professional pick, pack, and delivery solutions, freeing them to focus on growth.
Whether you sell via Amazon FBA or manage FBM operations independently, our transit logistics services ensure fast, on-time shipping across road, sea, or air. With cost-saving route optimization and precise inventory control, Keys Logistics helps you simplify fulfillment while maximizing operational efficiency.
In conclusion, choosing between FBA vs. FBM depends on your business goals, product type, and operational capabilities. While FBA offers convenience and scalability, FBM provides greater control and flexibility. Evaluating these differences will help you align the right fulfillment model with your strategy.
Need expert help managing FBM logistics? Contact Keys Logistics for customized 3PL solutions that streamline fulfillment and improve efficiency.