Accountants for e-commerce & online sellers
Selling on Shopify, Amazon, Etsy, eBay or your own store? We turn messy multi-channel payouts into clean, reliable numbers — reconciling every marketplace, tracking stock and cost of goods, and keeping your VAT right whether you sell in the UK, across the EU or worldwide.
Every channel reconciled — Shopify, Amazon, Etsy, eBay and more
UK VAT, OSS for EU sales and postponed import VAT handled properly
Inventory and cost of goods tracked so you see your true margins
Xero plus integrations like A2X to keep the books clean automatically
Do I need to register for VAT if I sell on Amazon or Etsy?
If taxable turnover exceeds £90,000 in any rolling 12 months you must register, and marketplace sales count towards that. UK-established sellers holding goods in the UK account for the VAT themselves, not the marketplace. Marketplace-liable sales — mainly goods outside the UK in consignments of £135 or less — still count towards your threshold.
Correct for the 2026/27 tax year · last reviewed September 2026 · Chris Sullivan ACA
What every online seller needs to get right
E-commerce accounting has moving parts that a high-street shop never deals with — multiple channels, marketplace fees and VAT across borders. Here is what we keep a close eye on for every online seller we look after.
Multi-channel bookkeeping
Each platform pays you differently, nets off its fees and reports in its own way. We bring every channel together in Xero and reconcile your payouts to the penny, so your figures reflect what actually happened, not just what landed in the bank.
FoundationsMarketplace fees & payouts
Selling fees, referral fees, advertising and refunds all come out before you are paid. If you only record the net payout, your sales and margins are wrong. We split out fees so you can see the real cost of selling on each channel.
AccuracyStock & cost of goods
Your profit is not your sales — it is sales less the cost of the stock you sold. We set up cost-of-goods tracking and stock valuation so you know your true gross margin and are not caught out at year end.
ProfitabilityUK VAT & registration
Once your taxable turnover passes the VAT threshold you must register, and some sellers benefit from registering earlier. We watch your position, advise on the right scheme and file your returns under Making Tax Digital.
ComplianceVAT One Stop Shop (OSS)
Selling goods to consumers across the EU can trigger VAT in other countries once you pass the distance-selling threshold. The One Stop Shop (OSS) lets you report it all in one return. We help you understand whether OSS applies and keep you compliant.
InternationalMarketplace-collected VAT
For many sales, marketplaces like Amazon and eBay collect and account for VAT on your behalf, which changes how you record the transaction. We make sure marketplace-collected VAT is treated correctly so you neither over-pay nor under-declare.
ComplianceImports & postponed VAT accounting
Importing stock brings import VAT and duty into the picture. Postponed VAT accounting lets you account for import VAT on your return rather than paying it up front, protecting your cash flow. We set this up and keep the records straight.
InternationalXero & integrations
The right tools do the heavy lifting. We connect Xero to integrations such as A2X so marketplace settlements, fees and VAT flow through automatically and accurately, cutting hours of manual data entry each month.
AutomationYear-end & true profit
We prepare your accounts and corporation tax with your stock, fees and multi-channel income all correctly treated, so your year-end figures show the true profit of the business, not a distorted picture.
AnnualEverything included, built for online sellers
All packages include a Xero subscription (our recommended software) unless specifically agreed otherwise and are structured around how online sellers really operate: multiple channels, marketplace fees, stock and VAT across borders.
Pricing reflects how many channels you sell on and the VAT complexity involved. Multi-channel reconciliation and integrations are built in, so your numbers stay clean as you grow. View our standard packages →
Every e-commerce client gets Xero configured with an e-commerce chart of accounts and A2X-style integrations, so marketplace payouts, fees and VAT map cleanly and you always know your real margin.
- Xero set-up with e-commerce chart of accounts (or your preferred software)
- Statutory accounts & corporation tax
- Monthly reconciliation of one sales channel (up to 50 transactions)
- Email support
- Marketplace payout & fee mapping
- UK VAT registration & scheme review
- Cost-of-goods set-up
- Everything in Lite, plus advanced Xero
- Multi-channel reconciliation (up to 150 transactions)
- Quarterly VAT returns (UK, incl. OSS review)
- Annual accounts & corporation tax
- Payroll for up to 5 employees
- Email support
- A2X-style integration set-up across channels
- Stock & cost-of-goods tracking
- EU VAT / One Stop Shop (OSS) guidance
- Postponed import VAT accounting
- Everything in Core
- Monthly management accounts
- Quarterly strategy & tax review meetings
- Unlimited phone support
- Full channel-by-channel profitability reporting
- Inventory valuation & margin analysis
- Multi-country VAT support
- Rolling cash flow & stock-purchase forecast
All prices exclude VAT.
Why choose Lumi as your e-commerce accountant
Payouts, fees, VAT across borders — we know the platforms and keep the numbers clean so you can grow with confidence.
Plain English, no jargon
E-commerce accounting gets tangled fast. We cut through it with clear, straight-talking advice, just numbers that make sense and actions you can take to grow.
Every channel reconciled
We connect your channels and reconcile payouts down to the fees, so your sales, costs and margins are right across Shopify, Amazon, Etsy, eBay and beyond.
VAT across borders, done right
UK VAT, the EU One Stop Shop and postponed import VAT are easy to get wrong. We keep you compliant wherever you sell, and explain what applies to you in plain terms.
One point of contact
You deal directly with a qualified Chartered Accountant who knows your business. We are responsive and accessible, and you'll never be passed around a call centre.
What online sellers ask us most
Ready to see your real e-commerce numbers?
Book a free 30-minute call. We’ll look at your channels, your VAT and how we can take the bookkeeping off your plate.
E-commerce accountancy guides
Plain-English reads on the issues that catch online sellers out.
