Seller Fulfilled Prime Guide
Seller Fulfilled Prime (SFP) is a hybrid fulfillment model that gives you Prime eligibility without using Amazon’s warehouses. You maintain your own inventory and handle shipping, but Amazon handles customer service and returns. This guide covers how SFP works, its advantages and disadvantages, and whether it’s right for your business.
What Is Seller Fulfilled Prime?
SFP enables you to ship Prime-eligible orders from your warehouse. You manage everything (inventory, picking, packing, and shipping) like traditional FBM (Fulfilled by Merchant). However, your shipments receive Prime badging and must meet strict delivery timelines.
From the customer perspective, SFP looks identical to FBA. They see a Prime badge, expect next-day delivery, and get Prime-quality service. From your perspective, you’re running your own logistics instead of paying Amazon.
How SFP Works
You list products normally in Seller Central. Flag eligible products for SFP. When a customer purchases a Prime-eligible order, Amazon handles payment and order notification. You receive the order in your system.
You have a tight timeline to pick, pack, and ship the order. Amazon requires orders to be shipped within specific timeframes (typically 1-2 days). You apply Amazon-provided labels and hand off to an approved courier.
Amazon tracks the shipment and manages customer service. If a customer returns the order, Amazon authorizes the return and handles the reverse logistics. You receive the return and issue a refund.
SFP Requirements
Approved Courier
Amazon only allows specific couriers for SFP shipments. You can’t use any courier you choose. Approved couriers typically include DPD, Hermes, Royal Mail, and DHL in the UK, though the exact list varies by marketplace.
Amazon checks your courier choice before approving SFP. You’ll need to confirm that your chosen courier is approved.
Correct Labelling and Preparation
You must use Amazon-provided shipping labels. Labels must be applied correctly to the outside of the package in the exact location specified. Mislabelled packages are rejected by Amazon’s systems.
Preparation requirements are similar to FBA: items must be clean, undamaged, and properly packaged for shipping. Amazon inspects shipments when they arrive at courier hubs.
On-Time Delivery Targets
This is the critical requirement. Amazon requires 99.75% on-time delivery rate. This means of 1,000 orders, you can be late on only 2-3 shipments.
On-time means the package is picked up by the courier and scanned into their system within the required timeframe. It doesn’t mean delivered to the customer. Just handed off to the courier.
Maintaining 99.75% on-time delivery requires efficient operations. You need fast picking, packing, and courier handoff. Any operational slowdown (illness, high order volume, system issues) can break this metric.
Mandatory Free Next-Day Delivery
All items shipped via SFP must be offered with free next-day delivery. This is mandatory, not optional. Your price must reflect this delivery cost.
This typically adds £2-4 to your effective shipping cost per unit (since you’re paying the courier for next-day delivery). Your prices must be higher than FBM to cover this cost.
Key Advantage: Prime Without FBA Complexity
The main advantage is Prime eligibility without managing stock in Amazon’s warehouses. You keep full control over your inventory. You know exactly where every unit is and how many you have.
You also avoid FBA’s monthly storage fees. During slow seasons, you don’t accumulate storage fees on excess inventory. You avoid the complex inventory management that FBA requires across multiple fulfillment centers.
Prime badging improves Buy Box odds. Prime-eligible listings are more likely to win the Buy Box than non-Prime listings, even at higher prices. For sellers competing on multi-seller listings, SFP provides competitive advantage.
Key Disadvantages: Returns and Complexity
High Return Rates
This is the biggest SFP disadvantage. Amazon reserves the right to refund Prime customers’ orders for any reason without requiring return. A customer can simply claim the product was defective or not as described, and Amazon refunds them without proof.
Prime members also have automatic return authorization. They don’t need your approval to return items. Returns are authorized automatically by Amazon’s system.
Return rates on SFP are typically 20-50% higher than FBM for the same product. Some customers exploit this by purchasing multiple sizes (clothing) with the intention of returning most of them. Amazon’s lenient return policy enables this behavior.
You don’t just absorb the refund. You also handle the return shipment cost when items arrive back. Dealing with returned inventory, restocking, and refunding takes time and money.
Strict On-Time Delivery Requirements
99.75% on-time delivery is challenging. Any operational issue (courier strike, system outage, illness in your warehouse) risks missing this target. Even a single day of delays can push you below the required percentage.
Missing the on-time delivery target results in account warnings and potential SFP suspension. Maintain this metric religiously.
Mandatory Free Next-Day Delivery
Free next-day delivery is expensive. In the UK, next-day courier delivery costs £2-4 per package. Your prices must cover this cost. Customers accustomed to cheaper FBM prices may reject your higher-priced SFP listings.
You can’t offer cheap pricing on SFP because delivery costs are too high. This limits your ability to compete on price.
Limited Courier Options
Amazon only permits specific couriers. If your preferred courier isn’t approved, you must switch. Switching couriers often means renegotiating rates or accepting worse terms.
Limited courier options reduce your negotiation power. You can’t shop around. You must use an approved courier, whether the rates are favorable or not.
SFP vs FBA Cost Comparison
For items under 2kg, costs are roughly comparable:
FBA: £3.58 fulfilment fee + storage fees (£0.87-£2.90/cubic foot monthly). For a small item with moderate velocity, expect £4-5 total cost per unit including storage.
SFP: £2.50-3.50 courier cost + £1-2 packaging and labor. Total ~£4 per unit.
For heavy or oversized items, SFP is often significantly cheaper. FBA size-tier fees for large items can exceed £8. SFP’s flat courier cost is better.
For items with seasonal demand, SFP avoids storage fee spikes during slow seasons. FBA’s October-December storage fee increase (£2.90/cubic foot) is avoided with SFP.
Calculate your specific costs before choosing. Actual courier rates depend on volume and courier contract.
When SFP Makes Sense
SFP is right for you if:
- You have an efficient warehouse with fast picking, packing, and shipping capability
- You sell heavy or oversized items (where FBA size-tier fees are expensive)
- You want Prime eligibility without FBA complexity
- You have capacity to handle higher return rates
- You’ve negotiated good courier rates that make next-day delivery economical
SFP also works well for established sellers expanding product lines. If you already have warehouse and shipping infrastructure, adding SFP is low additional cost.
When SFP Doesn’t Make Sense
Avoid SFP if:
- You’re a small seller without efficient warehouse operations
- You can’t maintain 99.75% on-time delivery (tight operational constraint)
- You sell items under 2kg where FBA is cost-competitive
- You can’t absorb higher return rates
- You don’t have reliable courier access or acceptable rates
For most new sellers, FBA is simpler. You outsource complexity to Amazon. Only move to SFP if you have specific advantages (heavy items, seasonal products, or existing warehouse capability).
SFP vs FBA vs FBM: Comparison
FBA: Most hands-off. Amazon handles everything. Higher cost but simplest operations. Best for small sellers.
SFP: Hybrid. You handle logistics, Amazon handles customer service and returns. Prime eligible. Medium complexity, medium cost. Best for sellers with warehouse capability.
FBM: Most control, most work. You handle everything. No Prime (unless you apply for Seller Fulfilled Prime). Lowest cost but highest operational burden. Not recommended for competing on multi-seller listings.
Read our detailed FBA vs FBM comparison for comprehensive analysis.
Getting Started with SFP
Apply for SFP in Seller Central. You’ll need:
- Professional seller account in good standing
- Confirmed approved courier
- Demonstration of ability to meet on-time delivery requirements (typically 30+ days of FBM history)
Amazon reviews your application and confirms courier approval. Once approved, flag specific products as SFP-eligible in your inventory settings.
Amazon will provide shipping label templates and preparation guidelines. Follow these exactly. Compliance with labelling and preparation is mandatory.
Monitoring SFP Performance
Track three critical metrics in Seller Central:
On-Time Delivery Rate: Monitor weekly. If this drops below 99.75%, take immediate action. You risk losing SFP eligibility.
Return Rate: Track your return percentage. If it’s unusually high, investigate why. Are customers receiving damaged items? Is your product defective? Are you being exploited by serial returners?
Refund Rate: Monitor how many orders result in refunds (before or after return). High refund rates indicate product problems or customer dissatisfaction.
Frequently Asked Questions
Can I use SFP for all my products?
Only Amazon-approved products can use SFP. Some restricted categories and hazardous products are ineligible. Check your product’s SFP eligibility in Seller Central before listing.
What happens if I miss the on-time delivery target?
Missing the target results in warnings. Repeated violations can result in SFP suspension. You’ll be unable to offer SFP until metrics improve. This removes Prime eligibility for those products.
Can I use SFP and FBA for the same product?
You can list the same product using both models, but typically only one will be the Featured Offer in the Buy Box. You’ll compete with yourself, which is inefficient. Choose one model per product.
What if a customer receives a damaged item shipped via SFP?
Amazon handles the return and refund. The customer is protected under Prime’s quality guarantee. You receive the return (if sent back) and must credit Amazon. Document damage to your insurance if applicable.
Can I offer different prices for SFP vs regular FBM shipments?
No. You can’t have two prices for the same product with different fulfillment.