Run a shop on Amazon, Shopify or Etsy and your finances stop looking like anyone else's. Payouts arrive net of fees. PayPal holds money for reasons it rarely explains. VAT gets tangled the moment you sell across marketplaces or start dropshipping. A generalist accountant can file your return. A good e-commerce accountant can tell you why your settlement report doesn't match your sales, and that difference is worth paying for.
London has no shortage of firms chasing this business. The ten below come from our original shortlist, but ranking them in a single line misses the point. The right choice depends on what stage you're at and how much hand-holding you want. So instead of a countdown, we've grouped them by the kind of seller they suit best. This is editorial analysis based on what each firm publishes about itself, not a hands-on test, and every price here is a starting point you should confirm before signing.
The Shortlist at a Glance
| Firm | Base | Platforms Mentioned | Strongest Fit |
|---|---|---|---|
| Osome | London, online | Amazon, Shopify, eBay, PayPal, Stripe | Founders who want automation |
| Crunch | London, online | Amazon, Shopify, eBay, Etsy, TikTok Shop | Multi-channel sellers on a budget |
| TWB Accountants | London | Shopify, Amazon, Etsy, eBay | Growing sellers who want a named contact |
| Ecommerce Accountants LLP | Shoreditch | Amazon, dropshipping, online arbitrage | Amazon FBA and marketplace sellers |
| GoForma | London, online | FreeAgent, Xero | First-year startups |
| Pearl Lemon Accountants | London | Shopify, Amazon, eBay | Sellers who want growth advice |
| Debitam | London, online | Cloud platforms | Sole traders and micro shops |
| E2E Accounting (CoxHinkins) | London and Oxford | QuickBooks, Xero, Sage | Scaling sellers needing CFO-style insight |
| Makesworth Accountants | Harrow, Ilford, Holborn | Cloud platforms | Sellers who prize an established practice |
| Mazuma | UK-wide, online | Xero, own app | Anyone who wants a fixed monthly fee |
You Want the Software to Do the Boring Part
Osome topped our original list for a reason. Each client gets a dedicated accountant reachable by live chat, and a real-time dashboard shows cash flow, unpaid invoices and upcoming deadlines in one view. VAT, annual accounts, corporation tax and payroll are all covered, with packages that grow alongside the business. The switching process is the quiet selling point: Osome contacts your old accountant and handles the handover, software migration included. If dreading the paperwork of changing firms is what's kept you with a bad one, that matters.
Crunch built its name with freelancers, then added a proper e-commerce offer. It pairs its own software with ACCA-regulated accountants and connects directly to Amazon, Shopify, Etsy, eBay, TikTok Shop, WooCommerce and Walmart, with multi-currency support built in. Every plan includes unlimited access to accountants, and the Premier tier targets businesses turning over more than a million pounds. Crunch says its prices can be up to 60 per cent lower than traditional high-street firms. Treat that as a claim to test against your own quotes, but the platform list alone makes it the obvious call for sellers spread across several channels.
You Want a Person Who Knows Your Business
TWB Accountants sells continuity. You deal with people who know your accounts, not whoever picks up the phone. Its e-commerce work covers Amazon, Etsy, eBay and Shopify sellers, from bookkeeping and VAT to cash flow analysis and tax planning. The firm also works with creative businesses and London landlords, which helps if your income doesn't come from just one shop.
Pearl Lemon Accountants leans toward strategy rather than pure compliance: cash flow, tax savings and financial planning tied to where you want the business to go. It integrates with Shopify, Amazon and eBay, keeps its pricing transparent and makes consultations easy to book. Good for the owner who wants an advisor pushing back, not just a filing service.
You Only Sell Online, Full Stop
Ecommerce Accountants LLP is the specialist's specialist. The Shoreditch firm is a Xero partner and works only with online sellers: Amazon FBA operators, dropshippers, arbitrage traders and marketplace retailers. That narrow focus is the whole argument. An accountant who already understands Amazon settlement reports, PayPal holds and the VAT side of dropshipping won't bill you for learning it.
Every Pound Counts This Year
GoForma aims squarely at early-stage businesses, with e-commerce plans from 28 pounds a month. Each includes a FreeAgent licence the firm values at 300 pounds a year, plus a dedicated accountant. It handles company formation, self-assessment, VAT and year-end accounts, and offers free 20-minute consultations so you can judge the fit first. Ideal for the first Shopify store or an Etsy experiment.
Debitam suits sole traders and micro shops that need dependable basics. Our original listing noted a 4.9-star Trustpilot rating from more than 3,000 reviews; check the current figure yourself. Pricing is tailored, services cover corporation tax, bookkeeping, payroll and VAT, and in-person London meetings are available if you prefer them.
Mazuma is the simplest proposition here: a fixed fee from 38 pounds a month plus VAT, a dedicated accountant and an app for expenses and invoices. It covers self-assessment, corporation tax, VAT and bookkeeping, and has a track record of sorting out past HMRC problems for clients. If unpredictable bills are what you hate most, start here.
You've Outgrown the Starter Plan
E2E Accounting, backed by chartered practice CoxHinkins and its two decades with UK SMEs, offers the depth a scaling seller needs: platform reconciliation, VAT reporting, payroll and tax planning across QuickBooks, Xero and Sage. It's the closest thing on this list to having a part-time finance director.
Makesworth Accountants has served SMEs since 2012 from offices in Harrow, Ilford and Holborn. It's an award-winning chartered certified practice whose client list stretches well beyond e-commerce, but online retailers get the benefit of strong compliance habits and cloud tools. Choose it for reassurance rather than niche platform expertise.
Before You Sign Anything
- Ask which of your exact platforms they connect to, not just whether they "do e-commerce".
- Get the full monthly price in writing, including VAT and any add-ons for payroll or extra transactions.
- Ask who you'll actually speak to, and whether that person stays the same.
Got opinions on which online tools and services genuinely earn their place? Browse more rankings and explore the latest ICONPOLLS.com features.
Quick Answers
Do I need a specialist e-commerce accountant?
Not always. A tiny single-channel shop may manage with a low-cost generalist. Once you sell across marketplaces, hold stock abroad or dropship, a specialist usually saves more than they cost.
Which option is cheapest to start with?
Of the published starting prices here, GoForma begins at 28 pounds a month and Mazuma at 38 pounds a month plus VAT. Prices change, so confirm current rates directly.
