7 Signs You Need Accountants for Amazon Sellers
You started selling on Amazon with a few products and a spreadsheet. It worked. Then sales grew, the payouts got confusing, and the tax questions started piling up.
Many UK sellers wait too long before getting help. They only look for accountants for Amazon sellers after a VAT problem, a surprise tax bill or a letter from HMRC. By then, fixing things costs more than preventing them would have.
This guide covers seven clear signs it’s time to get professional help, the UK rules behind each one, and a checklist to help you decide.
Why Amazon Selling Is Harder to Account For
Amazon doesn’t pay you the way a normal customer does. Each payout is a bundle: sales, minus referral fees, FBA fees, storage charges, advertising costs and refunds. Your bank statement shows a single net figure, which is not your real turnover and not your real profit.
For tax, HMRC cares about your gross sales and your allowable costs separately. If you only track what lands in your bank account, your figures will be wrong, which can mean overpaying tax or underpaying VAT.
That gap is exactly what specialist accountants close. With that in mind, here are the seven signs.
Sign 1: You’re Approaching the VAT Threshold
You must register for VAT if your taxable turnover goes over £90,000 in any rolling 12-month period, or if you expect it to exceed that in the next 30 days alone. The deregistration threshold is £88,000, and both are unchanged for 2026/27.
Three things catch Amazon sellers out:
- It’s turnover, not profit. A seller with £95,000 in sales and £10,000 in profit still has to register.
- It’s rolling. You can cross the threshold in the middle of a year, not just at year end.
- All channels count. Amazon, eBay, Etsy and Shopify sales are added together.
Example: Priya sells phone accessories. She makes £40,000 on Amazon, £28,000 on eBay and £24,000 on her own Shopify store. Each channel looks safe, but her total is £92,000. She has already crossed the line and may owe VAT from the date she should have registered.
Late registration can bring penalties and back-dated VAT. If you’re passing roughly £75,000 in rolling sales, that’s a good moment to talk to an accountant. They can time your registration, advise on voluntary registration (which lets you reclaim VAT on stock and costs), and choose between standard and flat rate accounting.
Sign 2: You Can’t Reconcile Your Amazon Payouts
Can you explain how a £1,000 sale turned into a £620 payout? If not, you have a reconciliation problem.
Amazon settlement reports contain dozens of line types: fees, reimbursements, promotional rebates, VAT adjustments and chargebacks. Without a proper process, errors build up quietly. Sales get missed, fees get double counted, and your profit figure becomes guesswork.
Good accountants for Amazon sellers usually set up software such as Xero or QuickBooks, linked to Amazon through a tool like A2X or Link My Books. These tools split each payout into the right categories automatically, so your monthly figures match reality.
Warning sign: you only look at your books at tax return time.
Sign 3: You Sell Across Several Channels or Countries
Selling on Amazon plus eBay, Etsy or Shopify is smart for growth, but it multiplies the admin. Each platform pays differently, charges different fees and reports differently.
Cross-border selling adds more layers:
- Overseas sales: Selling to customers in the EU can trigger separate VAT rules, and in some cases registration in another country, for example if you store stock there.
- Imports: If you buy stock from abroad, you may deal with import VAT and customs duty. Postponed VAT accounting can help cash flow, but only if it’s recorded correctly.
- Low-value consignments: For goods in consignments worth £135 or less sold to UK customers, VAT is generally handled at the point of sale, and marketplaces may be the ones accounting for it when the seller is overseas.
This is where small mistakes become expensive. A specialist accountant knows which rules apply to your route to market and can stop you registering in the wrong place, or missing a registration you needed.
Sign 4: You Don’t Know Which Business Structure Suits You
Most Amazon sellers start as sole traders because it’s simple. That’s fine at the beginning, but it isn’t always the best long-term set-up.
As a rough guide:
- Sole trader: Easy admin, but your profits are taxed as personal income and you’re personally liable for business debts.
- Limited company: Separate legal entity, pays corporation tax on profits, and gives you flexibility in how you take money out (salary and dividends). It also comes with more paperwork, such as annual accounts and a confirmation statement at Companies House.
There is no single correct answer. It depends on your profit, your goals, and whether you take all profits out or reinvest them.
Example: Mark has £70,000 profit and reinvests most of it in stock. As a sole trader he is taxed on all of it as personal income, even money he leaves in the business. An accountant might model a limited company, where only the money he takes out is taxed personally and the rest is taxed at corporation tax rates.
Changing structure also has tax and practical consequences, such as transferring stock, VAT numbers and Amazon seller accounts. Get advice before you switch, not after.
Sign 5: Making Tax Digital Is Coming for You
If you’re VAT-registered, you must already keep digital records and file VAT returns through MTD-compatible software. Spreadsheets alone won’t meet the rules unless they’re linked to compatible software.
Making Tax Digital for Income Tax Self Assessment is also being phased in. It started in April 2026 for sole traders and landlords with qualifying income above £50,000, with lower thresholds planned for later years. Under MTD you send quarterly updates to HMRC and a final declaration, rather than one annual return.
For a busy seller, quarterly reporting is a big shift. An accountant will tell you:
- Which start date applies to you
- Which software to use
- How to set up your Amazon data so quarterly updates are quick
Sellers who prepare early usually find MTD less painful than those who scramble at the deadline.
Sign 6: Your Stock and Costs Are a Mess
Inventory is often the biggest number in an Amazon business. It’s also one of the easiest to get wrong.
Common problems include:
- FBA stock in transit or in warehouses: You still own it, and it affects your accounts.
- Lost, damaged or unsellable units: Some are reimbursed by Amazon, some aren’t, and each is treated differently.
- Returns: Sellable returns go back into stock, while others are written off.
- Missed expenses: Advertising, FBA fees, packaging, software subscriptions and home office costs are often forgotten.
Claiming only what you can prove means keeping clear records. A good accountant ensures every allowable cost is captured, and the cost of goods sold figure is accurate, so you pay tax on real profit.
Also remember the £1,000 trading allowance. It can cover very small sellers, but most Amazon businesses exceed it and must report their income and costs normally.
Sign 7: HMRC Has Been in Touch, or You’re Behind
Marketplaces now report seller income to HMRC under platform reporting rules, so HMRC can see how much you earn online. Unreported income is easier to spot than ever.
You should get help quickly if:
- You’ve received a letter or email from HMRC about VAT or income tax
- You’ve been selling for a year or more and never registered or filed a return
- You’ve missed VAT returns or payments
- Your records are incomplete or in a muddle
Don’t ignore it. Penalties and interest grow over time, and HMRC generally treats people who come forward and fix problems more favourably than those who don’t. An accountant can assess the position, contact HMRC for you and, where appropriate, help you make a voluntary disclosure.
What Accountants for Amazon Sellers Typically Provide
To summarise, specialist support usually covers:
- Monthly bookkeeping and Amazon payout reconciliation
- VAT registration, returns and advice on schemes
- Self Assessment or company accounts and corporation tax
- MTD-compliant software setup and quarterly filing
- Tax planning, including structure and extracting profit
- Handling HMRC queries
Fees vary by turnover, complexity and services, so ask for a fixed monthly quote and check exactly what’s included.
Quick Checklist: Do You Need an Accountant?
Tick each statement that applies to you:
- My rolling 12-month sales are above about £75,000
- I sell on more than one platform
- I can’t explain the difference between my sales and my payouts
- I sell to or buy stock from overseas
- I’m unsure if I should be a sole trader or limited company
- I’m not using MTD-compatible software
- My stock records are incomplete
- I’ve had a letter from HMRC, or I’m behind on filings
Two or more ticks: a conversation with an accountant will likely pay for itself. Four or more: don’t wait.
Note: Tax rules, thresholds and deadlines change. Verify all figures and dates on gov.uk or with HMRC before publishing or relying on this content.
Frequently Asked Questions
Do I legally need an accountant to sell on Amazon?
No. But you do have legal duties on tax, VAT and record-keeping, and an accountant helps you meet them accurately.
When should I hire accountants for Amazon sellers?
Ideally before you hit the VAT threshold or at the start of your second year of trading. Early advice on structure, software and records is cheaper than fixing mistakes later.
How much do accountants for Amazon sellers cost?
Many firms charge a monthly fee that rises with turnover and complexity. Always ask what’s included, such as bookkeeping, VAT returns and tax returns, so you can compare like for like.
Does Amazon handle VAT for UK sellers?
No. Amazon may calculate VAT and, for certain overseas sellers, account for it, but as a UK-based seller you must register, file and pay VAT yourself. HMRC has also consulted on extending marketplace liability to UK sellers, so watch for updates.
Can I claim Amazon fees and advertising as expenses?
Generally yes. Referral fees, FBA fees, storage and advertising costs are usually allowable business expenses if properly recorded.
Conclusion: Get the Right Accountants for Amazon Sellers Before Problems Start
Growth is exciting, but it brings tax complexity with it. If you recognise even a few of these signs, the right accountants for Amazon sellers can keep you compliant, protect your margins and give you accurate numbers to make better decisions.
Not sure where you stand? Book a free consultation with our ecommerce accounting team today. We’ll review your sales, VAT position and set-up, and tell you exactly what to do next.
