Amazon FBA Accountant UK: The Complete Guide for Sellers on Tax, VAT and Bookkeeping

An Amazon FBA accountant in the UK handles the parts of seller accounting a generalist often misses: UK and EU VAT, Amazon settlement fees, and stock held in Amazon warehouses. Getting these right helps you stay compliant and see your true margin.

Selling on Amazon in the UK looks simple from the outside: list a product, ship it into FBA, and let Amazon handle the rest.

But once the sales start flowing, most sellers quickly discover that the accounting behind an Amazon FBA business is anything but simple.

This guide covers the biggest tax and bookkeeping issues Amazon sellers face, and how to pick the right accountant for your business.

Why Do Amazon FBA Sellers Need a Specialist Accountant?

Amazon FBA is not a normal retail business, and it’s not a normal service business either. Your money doesn’t arrive as clean invoices. It usually arrives every two weeks as a lump-sum settlement from Amazon, already netted off against dozens of different fee types.

Miss what’s inside that settlement and you either overpay tax or, worse, understate your income to HMRC.

What Makes FBA Accounting Different

• Amazon deducts referral fees, FBA fulfilment fees, storage fees, long-term storage surcharges, advertising (PPC) spend, refunds and reimbursements before you ever see the money
• Stock sits in Amazon warehouses across the UK (and often the EU) — that stock is an asset on your balance sheet, not an expense until it sells
• You’re paid in multiple currencies if you sell on international marketplaces, so FX gains and losses hit your P&L
• Marketplace VAT rules mean Amazon sometimes collects and pays VAT for you, and sometimes doesn’t — getting this wrong is one of the most common (and expensive) FBA mistakes

A generalist accountant who books your Amazon payout as one line of “sales income” will make you pay tax on money that was never really yours, and will miss legitimate deductions worth thousands.

Recommended action: Before you hit £30k–£50k in annual sales, get an accountant who has other Amazon FBA clients on their books and understands settlement-level reporting.

Why Is VAT the Biggest Trap for UK Amazon Sellers?

VAT is where most FBA sellers get into trouble. The rules changed significantly after Brexit and again with the introduction of the EU’s One Stop Shop (OSS) and Import One Stop Shop (IOSS) schemes.

UK VAT Registration for FBA Sellers

If you’re a UK-established business, you must register for UK VAT once your taxable turnover exceeds the current £90,000 threshold in any rolling 12-month period.

If you’re a non-UK business storing stock in the UK (including in an Amazon FBA warehouse), you must register for UK VAT from your very first sale. There is no threshold.

If you import stock from outside the UK, postponed VAT accounting lets you declare and reclaim import VAT on the same return instead of paying it at the border. See HMRC guidance on accounting for import VAT.

Our VAT return service handles registration, quarterly filing and import VAT for online sellers.

Marketplace Facilitator Rules

Since 1 January 2021, Amazon is required to collect and remit UK VAT on certain sales: mainly goods sold by overseas sellers to UK customers, and goods imported into the UK in consignments worth £135 or less and sold to UK consumers.

For a UK-established VAT-registered seller, however, you are still responsible for accounting for VAT on your own sales through your VAT return. Confusing these two situations is one of the most common errors we see.

Selling into the EU: OSS, IOSS and Country Registrations

• If you store stock in an EU country (for example under Pan-EU FBA), you almost always need a local VAT registration in that country
• Distance sales from one EU country to consumers in another are covered by the One Stop Shop (OSS) scheme. The €10,000 EU-wide threshold only applies to EU-established businesses (including Northern Ireland sellers of goods), so it doesn’t help a GB seller. But when you sell to EU consumers through Amazon from stock already in the EU, or send imported parcels worth €150 or less, Amazon is treated as the seller for VAT and collects it, so don’t declare that VAT again. You still need a local VAT registration in each EU country where your stock is stored.
• Low-value imports into the EU (up to €150) can be handled through IOSS, which speeds up customs and improves the customer experience

Making Tax Digital for VAT

All VAT-registered businesses in the UK must comply with Making Tax Digital — that means keeping digital records and filing VAT returns through compatible software such as Xero or QuickBooks. Manual spreadsheets uploaded through the old HMRC portal are no longer allowed.

How Do You Make Sense of Amazon Settlements in Your Bookkeeping?

A good Amazon FBA accountant builds your bookkeeping around your actual settlement data, not your bank feed.

Why Your Bank Feed Isn’t Enough

Behind each Amazon payout sit thousands of transactions: sales, refunds, FBA fees, storage fees, PPC spend, promotional rebates, chargebacks and reimbursements.

If your bookkeeping stops at the bank feed, you have no visibility of gross sales, no visibility of true fees, and no accurate cost of goods sold.

The Right Tech Stack for an Amazon FBA Business

• Cloud accounting: Xero or QuickBooks Online as your core ledger
• Amazon integration tool: A2X or Link My Books to break Amazon settlements down into the correct sales, fee and refund accounts, and to post clean summary journals into your ledger
• Inventory tracking: Software that values stock at cost so your balance sheet and cost of goods sold are accurate
• PPC and advertising reports: Reviewed monthly against sales, not just left inside Seller Central

Cost of Goods Sold and Inventory

Because you often buy stock months before it sells, your cost of goods sold has to be matched to the period the sales actually happened in, not the period you paid the supplier.

Getting this right can shift your reported profit (and your tax bill) meaningfully in either direction.

A limited company must use the accruals basis. Since April 2024, sole traders use the cash basis by default, whatever their turnover, but can opt out and use accruals, which often suits sellers carrying a lot of stock.

Records HMRC Expects You to Keep

• Every Amazon settlement report and fee breakdown
• Supplier invoices for stock, plus freight and customs paperwork
• Import documents: C79 certificates or postponed VAT statements
• Advertising, software, packaging and prep-centre costs
• A stock count at your year end, valued at cost

Are You Actually Making Money?

Plenty of Amazon businesses grow turnover and lose money.

Once your bookkeeping is clean, watch four numbers: gross margin after Amazon fees, contribution per SKU after advertising, return rate by product, and how much cash is tied up in stock. Together they tell you which products to reorder and which to drop.

How Do You Choose the Right Amazon FBA Accountant in the UK?

Not every accountant advertising “e-commerce” experience actually knows Amazon. Before you sign an engagement letter, ask these questions.

Questions to Ask Before You Hire

• How many active Amazon FBA clients do you currently work with?
• Do you use A2X or Link My Books as standard for FBA bookkeeping?
• How do you handle VAT on marketplace-facilitated sales versus my own sales?
• Can you support Pan-EU FBA and foreign VAT registrations (or refer me to someone who can)?
• How will you help me plan for corporation tax or Self Assessment as my profits grow?
• What’s included in your monthly fee, and what’s charged extra?

Red Flags to Watch For

• Quoting a fee before even asking about your marketplaces or turnover
• Wanting to bookkeep straight from your bank feed with no Amazon integration
• Vague answers on marketplace VAT and EU compliance
• No experience with cloud accounting software like Xero or QuickBooks

Sole Trader or Limited Company?

Many sellers start as sole traders and incorporate as profits grow. A limited company can be more tax-efficient and adds a layer of protection, but it brings extra filing: annual accounts and a confirmation statement at Companies House as well as a corporation tax return.

If you are still trading as a sole trader, our self assessment accountants can handle your return and advise when incorporating makes sense.

Frequently Asked Questions

The Bottom Line

An Amazon FBA business can be very profitable, but only if your numbers are clean. Get the foundations right and you’ll make better sourcing decisions and price with confidence.

If you’d like an Amazon FBA accountant who genuinely understands e-commerce, our e-commerce accounting specialists work with sellers across the UK. Our accountants in Blackburn are here if you would prefer to meet in person.

Selling on more than one channel? Read our guide to ecommerce accounting for Shopify, Amazon and Etsy.

Use this link to book a free, no-obligation meeting.

Tax figures checked by Rehan Razzaq FCCA on 8 October 2026 for the 2026/27 tax year.

For the official position, see HMRC’s VAT registration guidance on GOV.UK.