Amazon US Marketplace for UK Sellers

The Amazon US marketplace represents one of the largest e-commerce opportunities available to UK sellers. With a market that’s roughly ten times the size of the UK market, expanding to Amazon.com can transform your business trajectory. However, successful expansion requires understanding the unique requirements, logistics, and compliance landscape of the US marketplace.

The Opportunity: Market Size and Scale

Amazon.com exposes you to a market which is ten times the size of the UK market. This isn’t hyperbole. It’s grounded in the scale of US e-commerce.

The US is Amazon’s largest and most mature marketplace. It generates a disproportionate amount of the company’s £570 billion-plus in annual revenue. There are over 310 million customers across Amazon’s 21+ marketplaces globally, but the US concentration is substantial. Amazon Prime has 200+ million members in the US alone.

For context, approximately 40% of US e-commerce flows through Amazon. If your product category is competitive in the UK, it’s almost certainly competitive in the US. With far greater volume and deeper customer intent.

How Amazon’s Catalogue System Works Across Countries

A key advantage of Amazon’s global structure is the unified catalogue system. Products share the same ASIN (Amazon Standard Identification Number) across multiple countries, which means much of your inventory may already be listed on Amazon.com.

However, this doesn’t mean you can simply activate your UK listings on the US site. Amazon treats each marketplace separately. You need to create explicit listings on Amazon.com, set up US-specific shipping templates, and comply with US-specific regulations and category requirements.

The good news? If you’re already selling on Amazon.co.uk, you already understand how the platform works. Each Amazon site operates the same way. If you’re familiar with one, selling on international sites is straightforward. The mechanics are identical, only the regulatory and logistical requirements change.

Listing Creation and Translation Challenges

When you create listings on Amazon.com, you’ll need to adapt your UK listings for the US market. This goes beyond simple translation.

Category structures differ between marketplaces. A product that sits in a particular category on Amazon.co.uk may have a different category structure on Amazon.com, requiring you to reorganize your product attributes accordingly.

Amazon will automatically create translations of new listings, but these vary significantly in quality. Machine translation is improving, but product copy that resonates with UK customers may not translate effectively for US customers. Marketing language, pricing psychology, and value propositions differ between markets.

If you want 100% correct listings that actually sell, hiring a human proofreader who understands US consumer language is best. The investment in professional translation typically pays for itself through improved conversion rates.

Combined North America Accounts

Amazon offers a powerful feature called Combined North America Accounts that links the US, Canada, and Mexico. You can manage listings, inventory, and reporting across all three countries through a single account.

Combined accounts share product listings (same ASIN across the three countries), though you control pricing and inventory separately by country. They also share a single monthly subscription fee rather than requiring three separate subscriptions.

For most UK sellers, starting with Amazon.com is the priority. Canada and Mexico can be added later as you scale.

Shipping, Logistics, and Fulfilment Strategy

Shipping from the UK to the US takes significantly longer than domestic delivery within the UK. This is one of the most critical differences to understand before launching.

If you use Merchant Fulfilled Network (MFN). shipping orders yourself. Shipping from UK to US takes 10–21 days depending on service level. This is far slower than Prime customers expect. Your conversion rate will suffer, and you’ll face more customer inquiries and returns.

The solution: use local FBA for Prime eligibility. By storing inventory in US fulfillment centres, you offer Prime-eligible 2-day delivery, matching customer expectations and ensuring competitive ranking in search results.

This requires shipping bulk inventory to the US upfront. Logistics costs are non-trivial: professional shipping freight from UK to US typically costs £2,000–£5,000 per shipment depending on weight and volume. Plan accordingly in your financial model.

The strategy is to ‘under promise and over deliver’ on delivery times. Set conservative delivery expectations so you’re more likely to exceed them. Use local FBA whenever possible for anything competing in mainstream categories.

Creating US-Specific Shipping Templates

You must create entirely new shipping templates for Amazon.com. Your existing UK templates won’t work for US shipping.

Set up three template options: Prime 2-day delivery (via FBA), Standard domestic shipping (if using MFN), and international shipping from the UK (if offering this as a budget option). Clearly label shipping times so customers understand what they’re getting.

If using FBA, Amazon handles shipping templates automatically. If using MFN, you control the templates and messaging.

Navigating Product Compliance and Restrictions

One of the biggest surprises for new US sellers is that products legal and sellable in the UK are sometimes heavily restricted or banned on Amazon.com.

The most common examples:

• Baby sleep positioners: Legal and widely available in UK retail, but banned on Amazon.com due to safety concerns. Amazon’s policy on baby products is significantly stricter than UK regulations.
• Anti-bacterial products: Standard consumer items in the UK (hand soaps, wipes, etc.) are classified as pesticides in the US and face FDA regulations. Many cannot be sold without formal registration.
• Supplements and dietary products: US regulations differ significantly from UK regulations. Claims that are acceptable in UK marketing may violate US FDA guidelines.
• Cosmetics and skincare: Ingredients approved in the UK may be banned in the US. Always check FDA guidance.

Before launching any product on Amazon.com, thoroughly research both Amazon’s category restrictions and US consumer regulations. The risk of account suspension for compliance violations is real and costly.

Understanding Currency and Payment Systems

Payments on Amazon.com are made in US Dollars (USD), not GBP. You’ll need a way to receive USD payments.

Option one: Link a US bank account directly to your Amazon seller account. If you have a US address and tax ID, this is straightforward. Most UK sellers don’t have this.

Option two: Use Amazon’s built-in currency conversion. Amazon will automatically convert USD to GBP and deposit funds to your UK bank account. However, Amazon’s currency conversion rate is not particularly good. You’ll lose 1–2% on exchange rate margins.

Option three: Use an international currency payment provider. Services like Payoneer allow you to create a US bank account (complete with US bank routing number) that feeds into your UK personal account. These services offer much better exchange rates than Amazon’s conversion, typically paying you in GBP with a real market rate plus a small fee (0.5–1%).

For any serious US seller, Payoneer or similar is essential. The exchange rate savings alone justify the account setup.

Tactical Launch Strategy

Here’s a practical sequence for entering Amazon.com:

1. Research your product category on Amazon.com. Study the top competitors, their pricing, reviews, and search terms
2. Check compliance: verify your products aren’t restricted in the US via Amazon Seller Central
3. Set up a US tax identity (ITIN) with the IRS if you don’t have one (required for US seller accounts)
4. Register a US bank account or set up Payoneer for payments
5. Create a new seller account on Amazon.com (separate from UK account, though can be linked to Combined North America)
6. Create 3–5 test listings with detailed product information and professional translations
7. Arrange a small initial inventory shipment to test demand before scaling
8. Monitor performance metrics: conversion rate, ACoS (advertising cost of sale, typically 20–25% including all fees), and customer feedback
9. Scale inventory only after validating product-market fit

Understanding Amazon Fees on the US Marketplace

Amazon’s fee structure on Amazon.com is similar to the UK, but scale matters. Referral fees are typically 15%, and your total take rate (all fees including FBA, advertising, and payment processing) averages 20–25%.

On the US marketplace, advertising is nearly essential for visibility. Expect to allocate 10–15% of revenue to advertising if you want consistent, visible placement in search results. This is higher than the UK, where organic visibility is sometimes sufficient for established products.

For detailed fee breakdowns, see our Amazon fees guide.

When to Expand to Amazon US

Amazon US expansion makes sense when:

• You’ve proven product-market fit on Amazon.co.uk with consistent sales velocity
• Your product has no compliance issues in the US
• You have sufficient capital to store inventory in the US (typically £5,000–£15,000 for initial stock)
• You can sustain US advertising campaigns (requires cash flow buffer)
• Your margins are healthy enough to absorb higher US fees and logistics costs

For broader international expansion strategy, consider whether US is your priority market or whether EU expansion (via Pan-European FBA) should come first.

Getting Expert Support for US Expansion

Entering the US marketplace involves significant planning, complianc