Profit Mystery
Sales are up, but profit is unclear. Fees, refunds, fulfilment and VAT hide what you take home.
Who we helpE-commerce Sellers
Trusted E-commerce Accountants for Amazon, Shopify & eBay Sellers
Specialist accounting for e-commerce sellers. Real numbers, fixed pricing, replies inside 72 hours, every time.
★ 4.9 Google · 63 reviews240+ UK businesses served30-day money-back
Sound familiar?
The pain points no one warned you about.
Cash Flow Panic
Cash comes in, then vanishes. VAT, bills and ads hit at different times, so spending feels risky.
Time Drain
Admin eats your week. Invoices, receipts and reconciliations steal time from growth.
Data Everywhere
Numbers live across platforms and do not match. Without one view, decisions are guesswork.
The switch
Your current accountant vs Zmartly.
Where you are now
Most accountants
- 01Reply time5-10 day wait
- 02Year-end speed6+ weeks
- 03PricingSurprise hourly bills
- 04Software"What do you use?"
- 05SpecialismGeneral accounting
- 06GuaranteeYou wait, you pay
Where you could be
Zmartly
- 01Reply time< 72h, every message
- 02Year-end speed5 business days
- 03PricingFixed monthly fee
- 04SoftwareXero / QuickBooks Partner
- 05SpecialismSector-specific playbook
- 06Guarantee30-day money-back
How it works
From first call to full clarity.
01 Free Discovery Call
We learn about your business, your platforms, and your pain points. No obligation, no jargon. Your time: 30 minutes.
02 Seamless Handover
We handle the admin, contact your previous accountant, and notify HMRC. You do nothing. Your time: zero.
03 You’re Set Up
Fully onboarded on our systems. We connect your platforms, track every deadline, and send reminders. Your time: 15 minutes.
04 Clarity on Autopilot
Full P&L breakdown by channel, all submissions on time, and a team that actually answers when you call. Your time: 5 mins/month
Free · 30 minutes
What’s included in your Tax Health Check.
Thirty minutes with a qualified accountant. We surface the savings, gaps, and structural issues most accountants miss, no obligation, no sales pitch.
VAT Recovery Scan
Check for overpaid VAT on Amazon fees, refunds & cross-border sales
Hidden Fee Analysis
Find where platform fees are eating into your margins.
Structure Review
Are you set up in the most tax-efficient way? We’ll tell you
Deadline Check
Ensure you’re not at risk of penalties or late filings
Why us
Why choose Zmartly for e-commerce sellers.
01 One View Across Every Channel
Amazon, Shopify, eBay, Etsy, your own site, all reconciled into a single P&L by channel, by SKU, by month.
02 Cross-Border VAT Without the Headache
OSS, IOSS, UK MTD, and US sales-tax exposure all handled by people who do this every day.
03 Cash Flow That Actually Matches Reality
Stripe payouts, Amazon disbursements, refund holds, and ad spend mapped properly, so the bank balance stops surprising you.
The detail
What an ecommerce accountant does for online sellers
An ecommerce accountant does more than file your year-end. You sell across Amazon, Shopify, eBay and Etsy, so the job is joining every payout, fee and refund into one clear P&L. We track profit by channel and by SKU, keep your VAT right, and make sure the bank balance ties to real sales. That is the difference between guessing at your margins and knowing exactly what you take home.
Bookkeeping across every sales channel
Your numbers live in different places and never match. We connect each channel through A2X, Link My Books or native Xero and QuickBooks feeds, then reconcile Stripe, PayPal, Klarna and Amazon disbursements against gross sales. You get one set of books, split by channel and by month, so you can see which store actually makes money once fees and ad spend come out.
Shopify seller accountingeBay seller accountingEtsy seller accounting
VAT for online sellers: OSS, IOSS and MTD
Cross-border sales make VAT the biggest risk area in online retail. We register you where you need it, file under the One Stop Shop (OSS) for EU sales and the Import One Stop Shop (IOSS) for low-value imports, and keep you compliant with Making Tax Digital. Where a marketplace acts as the deemed supplier and collects VAT for you, we account for it correctly, so you neither overpay nor miss a reclaim.
Marketplace fees and your true profit
Referral fees, FBA fees, Shopify Payments charges, Stripe and PayPal cuts, refund holds: every platform takes a slice at a different stage. We map each fee line and recognise stock cost when it sells, not when you buy it, so your margins are real. If most of your revenue runs through Amazon, our FBA accounting goes deeper on settlement reports and per-SKU profit.
Sole trader or limited company?
The right structure depends on your profit, not a rule of thumb. As you grow, a limited company often saves tax through a salary and dividend mix, though Corporation Tax and Companies House filing add admin. We model both against your real numbers and switch you over cleanly if it pays off.
Fixed monthly pricing, no surprises
You get bookkeeping, VAT, year-end accounts, tax advice and replies inside 72 hours for one fixed fee, from £129 to £499 a month, set by your transaction volume and number of channels. No long contract, rolling monthly, and a 30-day money-back guarantee. Most sellers are fully onboarded within two weeks.
Questions? We’ve got answers
The most common questions.
Yes. We connect each channel via A2X, Link My Books or native Xero / QuickBooks feeds, then reconcile Stripe, PayPal, Klarna and Amazon disbursements separately from gross sales. The result is a single P&L split by channel, by SKU and by month, so you can see which channel actually makes you money once fees, refunds and ad spend are stripped out.
Shopify reports gross orders, Stripe pays you net of processing fees on a rolling basis, and refunds hit a different day again, that is why the bank balance never ties out. We map Shopify orders, Stripe payouts, Shopify Payments fees and refund holds as separate ledger entries so the bank reconciles to the penny and you see true net revenue per order.
Once you cross economic nexus thresholds in a US state (typically $100K of sales or 200 transactions, though it varies), you are liable for sales tax in that state regardless of where you are based. We monitor nexus exposure via TaxJar or Avalara, register where required, and file the returns, so you avoid back-taxes the day a US state audits Shopify data.
Generalists are excellent at trades and consultancies but rarely handle channel-level fee reconciliation, OSS/IOSS, marketplace VAT or platform settlement reports. If your accountant currently treats Shopify or Amazon as one revenue line, you are losing margin visibility and almost certainly reclaimable VAT. We do the handover for you and most multi-channel sellers see a clearer P&L within 30 days.
Fixed monthly pricing from £129 to £499 depending on transaction volume and channels, with everything bundled, bookkeeping, VAT, year-end, advice and replies inside 72 hours. No long contracts, rolling monthly, and a 30-day money-back guarantee. Onboarding is usually complete in under two weeks and year-end accounts are turned around in 5 business days from receipt of complete records.
We work in Xero or QuickBooks as your core ledger, then bridge your sales channels with A2X or Link My Books so Amazon settlements, Shopify payouts and marketplace fees flow in cleanly. If you already use one of these, we keep it. If not, the licence and setup are included in your monthly fee, so there is nothing extra to buy.
Yes. Dropshipping and print-on-demand have their own quirks: supplier costs settle in a different currency and on a different date to the sale, and place-of-supply rules decide where VAT is due. We record cost of goods against each order, handle any foreign-currency conversion, and check your VAT position across the UK, EU and US so your true margin per order is clear.
Free · 30 minutes · No obligation
Stop overpaying tax. Start filing in 5 days.
Thirty minutes with a qualified accountant. Most owners uncover £1,000-£3,000 in annual savings on the first call. If we are not the right fit, you walk away with a free tax review on the house.
