Understanding Amazon FBA
What is Amazon reselling and how does it work?
Amazon reselling is the business of sourcing products from wholesale suppliers, manufacturers, or retail stores, then selling them on Amazon.co.uk for profit. You purchase inventory at a lower price, list it on Amazon with a markup, and when it sells, you pocket the difference. This model doesn't require you to create or manufacture products yourself, you simply identify market opportunities and fulfil customer demand. Successful Amazon resellers combine product research, competitive pricing strategy, and effective logistics to build sustainable, profitable businesses. Many sellers use Amazon's FBA service to handle the fulfilment side, allowing them to focus on sourcing and marketing.
What is Amazon FBA (Fulfilment by Amazon)?
FBA stands for Fulfilment by Amazon. When you use FBA, you send your inventory to Amazon's fulfilment centres. You no longer handle picking, packing, or shipping, Amazon does all of that for you. When a customer buys your product, Amazon automatically picks it from their warehouse, packages it, and ships it to the customer. Amazon also handles customer service enquiries, product returns, and refunds on your behalf. In return, you pay fulfilment fees per unit sold, storage fees for inventory stored in their warehouses, and a referral fee (check Seller Central for your category's current rate). The major advantage is that FBA products are eligible for Prime delivery, which significantly boosts visibility, conversion rates, and customer trust on Amazon.co.uk.
What is FBM (Fulfilled by Merchant)?
FBM stands for Fulfilled by Merchant. With FBM, you handle all aspects of fulfilment yourself, you keep inventory in your own storage, pick and pack orders, and arrange shipping directly to customers. You keep more of the profit per sale since you avoid Amazon's fulfilment fees (though you still pay the referral fee). However, FBM comes with significant responsibilities: you must respond quickly to customer enquiries, process returns yourself, and manage your own logistics network. FBM products are not Prime-eligible unless you opt into Amazon's Seller Fulfilled Prime (SFP) programme. FBM works best for sellers with low order volumes, very large or heavy items that don't qualify for FBA, or those willing to invest heavily in their own logistics infrastructure.
What is SFP (Seller Fulfilled Prime)?
Seller Fulfilled Prime (SFP) is a middle ground between FBA and FBM. With SFP, you handle fulfilment yourself (like FBM), but your products are still eligible for Prime delivery because you meet Amazon's strict shipping time and reliability standards. To qualify, you must maintain a very high on-time delivery rate, accept returns easily, and ship items within 1 to 2 days. SFP requires investment in reliable logistics and customer service infrastructure, but it gives you the benefits of Prime eligibility without paying FBA fees. This model suits sellers with strong operations, regional fulfilment networks, or those selling oversized items. SFP requires Amazon approval and ongoing compliance with their performance metrics.
FBA vs FBM vs SFP, which should you choose?
Choose FBA if: you want to scale quickly, avoid handling logistics, and maximise Prime eligibility. You're okay paying fulfilment fees in exchange for Amazon's operational excellence. Most UK Amazon sellers choose FBA for its simplicity and conversion benefits.
Choose FBM if: you have very low order volumes, sell oversized or heavy items, operate with tight margins, or want complete control over fulfilment. You're comfortable managing your own shipping and customer service.
Choose SFP if: you have a well-established fulfilment operation, can maintain a very high on-time delivery rate, and want Prime eligibility without FBA fees. This requires significant infrastructure investment.
For most beginners in the UK, FBA is the recommended starting point because it removes operational friction and gives you access to Prime customers from day one.
How much money do you need to start?
There's no absolute minimum, but starting capital depends on your strategy. At the bare minimum, you need a Professional seller account (check Amazon's current monthly fee), initial inventory, and prep costs if you use a prep centre like Precision. Most beginners start with a few thousand pounds total to source, prep, and ship their first batch. Some start smaller and grow; others invest more to launch multiple SKUs immediately. The key is having enough capital to handle at least one full inventory cycle without revenue: sourcing costs plus prep fees plus storage fees until your first sales come in. Many new sellers use a prep centre to reduce operational burden, which adds cost but saves time and improves quality. Never start with money you can't afford to lose during your learning phase.
Is Amazon FBA worth it in the UK in 2026?
Yes. Amazon.co.uk continues to be one of the largest e-commerce marketplaces in Europe, with millions of customers actively buying every day. Prime membership is mainstream, and Prime-eligible products (which FBA provides) still convert significantly better than non-Prime options. The market is more competitive than it was a few years ago, but opportunity remains for sellers who execute well. Success requires thorough product research to find items with real demand and reasonable competition, competitive margins, and a willingness to invest in marketing (PPC) to get visibility early. FBA removes operational headaches, but it doesn't guarantee profit, your success depends on your sourcing, pricing, and marketing skills. Many established UK sellers are still profitably scaling on Amazon, but the days of passive income with zero effort are long gone. If you're willing to work hard and learn the game, FBA remains worth the investment.
What are the risks?
Inventory risk: you invest capital upfront, and if your product doesn't sell, you've tied up cash. Long-term storage fees can erode margins quickly on slow-moving inventory.
Account suspension: Amazon suspends accounts for policy violations. A suspension can seriously disrupt your business overnight, so always understand Amazon's policies.
Competition: successful niches attract competitors who may undercut your price. You need sustainable differentiation, better sourcing, branding, or customer experience, not just cheap inventory.
Price wars: larger sellers or those with better sourcing can drive prices down. Build products with defensible pricing.
Market changes: trends shift, demand fluctuates, and consumer preferences evolve. Relying on one product category is risky, so successful sellers diversify.
Fee changes: Amazon periodically revises referral and fulfilment fees, which can quietly erode margins if you're not tracking them.
Cashflow challenges: Amazon holds funds after shipment before paying out, so you might wait several weeks to see money. Without adequate capital reserves, this can strain your ability to source new inventory.
How much can beginners realistically make?
This varies widely based on execution, capital invested, and time commitment. In your first month or two, expect to make little or nothing while you focus on sourcing and launching your first product. Many beginners take 8 to 12 weeks to get their first sale after launch. Once you start getting traction, growth typically continues gradually over the following months as reviews and rank build. Some beginners give up early because they haven't found a winning product yet. Others scale steadily within a year by launching multiple products and running PPC campaigns. The key difference between successful and unsuccessful sellers is persistence through the research and testing phase, then doubling down on what works. Your first six months should be treated as a learning investment, not an income expectation.
Business Setup
Sole trader vs limited company, which is right?
Sole Trader: you're self-employed, trading under your own name or a business name. Setup is free and takes minutes online. You keep all profits after tax, but you have unlimited personal liability, if something goes wrong (product liability, lawsuit), your personal assets are at risk. Accounting is simpler, and most beginners start as sole traders because there's no setup cost or administrative burden.
Limited Company: you form a separate legal entity. You're a director, and the company is the business. Setup costs a small fee online (or more with accountants). You have limited personal liability, the company's assets are at risk, but not your personal savings. You must file annual accounts, but you may benefit from corporation tax rates that can be more efficient than self-assessment tax for higher earners. Limited companies also appear more professional to partners and lenders.
Recommendation: many Amazon sellers start as sole traders and switch to a limited company once profit grows or if they're concerned about liability and scaling. Always consult an accountant before deciding, the right choice depends on your projections and risk tolerance.
How to register a limited company for Amazon FBA
Step 1: Choose your company name. Check Companies House to ensure it's available. Your name should include "Limited" or "Ltd." You'll need a registered office address (can be your home address).
Step 2: Register with Companies House. File your memorandum and articles of association (standard templates are available). Pay the registration fee. Processing typically takes a few days.
Step 3: Register for Corporation Tax. HMRC contacts you automatically after Companies House registration. You can also register online. You'll receive a Unique Tax Reference (UTR).
Step 4: Open a business bank account. Use your Companies House certificate and UTR to open an account with any UK bank.
Step 5: Set up payroll (optional). If you're paying yourself a salary, register for PAYE. If you're just taking dividends, you don't need payroll.
Step 6: Register your Amazon Seller account. Use your company name, registered office address, bank details, and tax details to set up your Professional seller account.
The entire process typically takes one to two weeks. Consider hiring an accountant to handle annual filings once your company is operating.
When should you switch from sole trader to ltd?
The optimal switchover point depends on your profit level and risk tolerance. Tax efficiency: once your projected profit reaches a meaningful level, a limited company can become more tax-efficient than self-assessment income tax, calculate with your accountant. Liability concerns: if you're selling products with potential liability issues (electrical items, consumables, items used by children), forming a limited company protects your personal assets. Growth trajectory: if you're scaling and planning to sell multiple products or hire staff, a limited company provides a cleaner legal structure for partnerships and investment. Always consult your accountant to model your specific situation.
Setting up your Amazon Seller Central account
Step 1: Create an Amazon account. Go to amazon.co.uk/selling. You can use an existing email or create a dedicated business email address.
Step 2: Choose your seller plan. Amazon offers Individual (per-sale fee, no monthly charge, limited features) and Professional (monthly fee, unlimited listings, all features). Start with Professional immediately if you're serious, the features justify the monthly cost.
Step 3: Verify your identity. Provide your full legal name, address, phone number, and email. Amazon sends a verification code to confirm.
Step 4: Add your business information. Sole traders use personal details; limited companies provide registered office address, company number, and tax reference.
Step 5: Add payment method. Link your business bank account to receive payouts.
Step 6: Add tax information. Provide your UTR or Self-Assessment reference. This is mandatory for FBA sellers.
Step 7: Review your settings. Check Seller Central Settings, confirm shipping methods, notification preferences, and FBA participation.
The full process takes around 10 to 20 minutes, though you can't list products until identity verification is complete.
Individual vs Professional seller plan
Individual Plan: no monthly subscription, but you pay a per-sale commission on every sale. Limited to a handful of product categories without restrictions. No access to bulk uploading, FBA, PPC advertising, or Seller Central reports. Only suitable for casual sellers testing the market with a few items.
Professional Plan: a fixed monthly fee regardless of sales volume. Includes FBA access, bulk uploading tools, PPC advertising, detailed analytics and reports, most product categories, brand registry eligibility, and API access for automation. Professional sellers also benefit from better buy box eligibility and customer trust signals.
Recommendation: start with Professional immediately if you're serious about building a real business. Anyone planning to use FBA must have a Professional account.
Essential Terminology
Key Amazon FBA terms every seller needs to know
ASIN (Amazon Standard Identification Number): a unique code Amazon assigns to every product on their marketplace. If you sell the same product as someone else, you share the ASIN and appear on the same listing.
FNSKU (Fulfilment Network Stock Keeping Unit): Amazon's barcode for tracking your specific inventory within their warehouses. Each FNSKU ties directly to your seller account. Amazon generates this label for you; you print and attach it to your products.
Buy Box: the prominent box on a product page where customers click to add to basket. Winning the buy box dramatically increases your sales. Amazon awards it based on price, seller rating, fulfilment method (FBA wins), and availability.
BSR (Best Sellers Rank): Amazon's ranking of products by sales volume within a category. Lower BSR means higher sales. Use BSR to gauge competition and demand.
SKU (Stock Keeping Unit): your internal product code, different from ASIN, used to track your own inventory and manage variations.
UPC/EAN: standard barcodes on physical products, required to register new products on Amazon (especially for gated categories).
ROI (Return on Investment): the profit you make per unit divided by what you spent to source and launch it.
Referral Fee: Amazon's commission on every sale, mandatory and factored into your pricing calculations, check Seller Central for current category rates.
Fulfilment Fee: Amazon's charge per unit sold through FBA, based on weight and dimensions, check the FBA fee calculator for exact figures.
Long-Term Storage Fee: a penalty fee for products stored in Amazon warehouses too long without sales. Check Seller Central for current rates, this can be a profit killer for slow-moving stock.
PPC (Pay-Per-Click): Amazon's advertising system. You bid on keywords; when your ad is clicked, you pay Amazon. Essential for getting visibility on new products.
ACoS (Advertising Cost of Sale): the percentage of your sales revenue spent on PPC advertising, calculated as PPC spend divided by PPC sales, times 100.