How much does it cost to hire an accountant in the UK?

A sole trader FBA seller with straightforward bookkeeping typically pays £100 to £250 a month, as of 2025. A limited company with VAT returns and multi-marketplace settlement reconciliation usually pays £300 to £800 a month, with most specialist firms quoting a fixed monthly fee rather than an hourly rate.

Does Amazon report sales to HMRC?

Yes. Since January 2024, UK online marketplaces including Amazon must report seller sales data to HMRC each January under the OECD's digital platform reporting rules. This means any mismatch between your VAT return and Amazon's reported figures is visible to HMRC without them needing to request it.

What are the biggest FBA mistakes to avoid?

The most common mistakes are registering for VAT late after crossing the £90,000 threshold, missing Pan-EU FBA VAT obligations, losing C79 import VAT certificates, and confusing gross settlement deposits with actual revenue. Each of these creates either a backdated tax liability or a missed reclaim, both of which are avoidable with proper monthly reconciliation.

When do I need to register for VAT as an Amazon FBA seller?

You must register for VAT once your taxable turnover exceeds £90,000 in any rolling 12-month period, as of 2025, not just at the end of a tax year. FBA sellers should track this on a rolling basis month by month, because breaching the threshold mid-month still creates a registration obligation from that point.

Amazon FBA Accountant UK: When Sellers Need Specialist Help

Q: Is Amazon FBA worth it in the UK?

Yes for most sellers, but only once tax and compliance costs are built into the pricing model rather than treated as an afterthought. Sellers who budget for VAT, settlement reconciliation, and accountancy fees from the start tend to keep FBA profitable; those who don't often get caught by a backdated VAT bill once they cross the £90,000 threshold.

An Amazon FBA accountant in the UK handles VAT registration and returns, Companies House filings, Amazon settlement reconciliation, and the tax planning that comes with holding stock in Amazon's UK and EU fulfilment centres. Most FBA sellers manage their own books for the first year or two without issue. The tipping point usually arrives with a specific trigger: crossing the £90,000 rolling 12-month VAT registration threshold, storing stock in a second EU country under Pan-EU FBA, or Amazon's own reporting to HMRC catching up with numbers that don't match your Seller Central export.

This guide sets out exactly when that tipping point tends to hit, what a specialist does differently to a generalist practice, and where Amazon FBA sellers most often get caught out. We work with sellers across this range every day, so the numbers below are drawn from real client files rather than generic guidance.

What does an Amazon FBA accountant in the UK actually do?

A specialist Amazon FBA accountant reconciles settlement reports against actual bank deposits, tracks VAT liability across every marketplace and fulfilment country a seller uses, and models the cash gap between a sale being made and the money landing in the bank. A general practice accountant working from a bank feed alone typically cannot do any of this, because Amazon settlement data never matches bank deposits line for line.

VAT registration, Making Tax Digital VAT returns, and quarterly filings
Settlement reconciliation, linking sales, fees, refunds, and storage or inbound charges to the net figure that actually hits the bank
Statutory company accounts and Corporation Tax computations
MTD for Income Tax Self Assessment (MTD ITSA) for sole trader sellers from April 2026
Pan-EU FBA VAT registrations and One Stop Shop (OSS) reporting where stock sits in more than one EU country
Reconciling C79 certificates and Postponed VAT Accounting (PVA) entries against import VAT actually claimed

When do Amazon FBA sellers in the UK need specialist help?

Most UK FBA sellers need a specialist once they cross one of four thresholds: the £90,000 rolling 12-month VAT threshold, the £50,000 qualifying income threshold for MTD ITSA from April 2026, the £1,000 Trading Allowance if selling started as a side income, or storage of stock in a second EU fulfilment centre. Hitting any one of these changes the compliance workload from a spreadsheet job to a specialist one.

VAT registration becomes compulsory once turnover exceeds £90,000 in any rolling 12-month period, as of 2025 (gov.uk VAT thresholds)
MTD ITSA becomes mandatory for sole traders with qualifying income above £50,000 from April 2026, dropping to £30,000 from April 2027 (gov.uk MTD ITSA guidance)
The £1,000 Trading Allowance lets casual sellers earn up to £1,000 gross before needing to register as self-employed, but most FBA sellers exceed this within their first few months
Pan-EU FBA creates a VAT registration obligation in every country where Amazon stores your stock, not just where you sell to

The Amazon settlement reconciliation problem

Here's the edge case most guides skip. Amazon settlement periods rarely align with calendar months, and the net deposit that lands in your bank is not your revenue. Say a seller generates £40,000 in gross sales during a settlement period, with £9,200 in Amazon referral fees, £6,800 in FBA fulfilment and storage fees, and £1,100 in customer refunds. The net deposit might be £19,000, arriving up to 14 days after the period closes, and it will not match any single invoice in the accounting system. We call this the Cash Gap. In my experience, this single mismatch is the most common reason FBA sellers under-declare turnover on their VAT return, not because they are trying to, but because bookkeeping software reconciles bank deposits, not gross sales.

Does Amazon report seller sales to HMRC?

Yes. Since January 2024, UK online marketplaces including Amazon have been required to report seller sales data to HMRC every January under the OECD's digital platform reporting rules, adopted into UK law via HMRC's digital platform reporting guidance. Amazon also operates as a deemed supplier under marketplace facilitator rules for certain overseas sales, and collects import VAT at the point of sale on consignments under the £135 import VAT threshold. If your VAT return figures don't reconcile against what Amazon reports to HMRC, that mismatch is now visible to HMRC by default, not something they need to request.

How much does an Amazon FBA accountant cost in the UK?

Sole trader FBA sellers with straightforward bookkeeping and an annual Self Assessment return typically pay between £100 and £250 a month for a fixed-fee service, as of 2025. Limited companies with monthly VAT returns and settlement reconciliation across multiple marketplaces usually sit between £300 and £800 a month, depending on transaction volume and whether Pan-EU FBA registrations are involved. Most specialist firms, including us, quote a fixed monthly fee rather than charging by the hour, because hourly billing on reconciliation work creates a perverse incentive to work slowly.

The biggest FBA accounting mistakes UK sellers make

Registering for VAT late, after already crossing the £90,000 rolling threshold, triggering backdated liability
Ignoring Pan-EU FBA VAT obligations once Amazon automatically redistributes stock into a second EU country
Losing or never requesting C79 certificates, meaning import VAT paid under PVA is never reclaimed
Treating gross settlement deposits as revenue instead of reconciling against actual sales, fees, and refunds
Missing the April 2026 MTD ITSA deadline for sole traders above £50,000 qualifying income
Assuming the £1,000 Trading Allowance still applies once FBA sales have clearly become a business rather than a hobby

We've written a longer breakdown of the reconciliation side of this for anyone selling across more than one platform in our piece on the Amazon sellers we work with, which covers the specific reports we pull from Seller Central each month.

Is Amazon FBA worth it in the UK once you factor in tax and compliance costs?

I still think FBA is one of the strongest routes into ecommerce for a UK founder, but the maths only works if compliance costs are built into the margin from day one rather than bolted on after the VAT threshold is breached. Sam here: the sellers who struggle are almost never the ones with thin margins, they're the ones who treated accounting as a £150-a-month afterthought right up until a £90,000 backdated VAT bill arrived. Budget for a specialist accountant as a cost of doing business on Amazon, not as an optional extra once things get complicated.

Final word

If you're approaching the VAT threshold, expanding into Pan-EU FBA, or simply can't get your settlement reports to match your bank account, that's the point to bring in a specialist rather than wait for HMRC to ask why the numbers don't reconcile. Book a discovery call and we'll walk through your current setup and give you a fixed-fee proposal built specifically around Amazon accounting, not generic bookkeeping.