AI does the books. A regulated accountant signs them.

Fire your spreadsheet.
Keep the accountant.

Comma is the accounting firm built for UK ecommerce. Your books stay current every single day, VAT prepares itself, and a named accountant reviews everything that matters — while you get back to selling.

Free during beta · no card · books migrated for you

Plays nicely with every channel you sell on

AmazonShopifyeBayEtsyTikTok ShopStripePayPalWalmart

The product

Your books, running themselves.

Connect once. Every order, fee, refund and payout lands in double-entry books the same day — to audit standard, in pence.

Live books, not quarterly archaeology

Marketplace settlements get split properly — sales, fees, refunds, reserves, advertising — across an ecommerce-specific chart of accounts. Your cash position, real margin and channel P&L are always today's numbers, not three months ago's.

  • Settlements reconciled to the penny
  • Multi-currency handled natively
  • 40+ monitoring rules watching for trouble
Cash position
£48,210
+12.4% this month
Revenue · June
£31,067
Amazon · Shopify · eBay
Amazon settlement£4,182.20posted
Meta ads−£820.00posted
DHL — inbound freight−£1,240.50categorised

Your accountant lives in WhatsApp

Snap a receipt and it files itself — matched to the card payment, VAT reclaimed, stored for seven years. Got a question at 9pm? Ask it where you already are. No portals, no PDFs attached to emails.

📸 receipt — coffee with supplier
Lunch meeting w/ packaging supplier

Got it — £38.40 at Notes Coffee ✓

Matched to your card payment from today and filed under subsistence. VAT claimed: £6.40.

Receipt stored for 7 years, HMRC-ready

One tap on the calls only you can make

Most months you'll hear from us a handful of times — only when a transaction genuinely needs the owner's judgment. The AI pre-selects its best answer, you tap to confirm, and a regulated accountant signs off anything with tax consequences. That's the whole job.

Deliveroo · £68.40 · 14 May needs your call

Who was this meal for?

Client entertainmentour guess
Staff meal
Reviewed and signed off by your named accountant before it touches your books.

How it works

Live in an afternoon.

01

Connect your channels

Amazon, Shopify, your bank — read-only OAuth, about ten minutes. We pull in up to 24 months of history and build your books from scratch.

02

We take the books over

Switching accountants is our job, not yours: clearance letter, records, opening balances. From day one your books update daily, automatically.

03

You answer the odd question

A few one-tap judgment calls a month. VAT, accounts and filings arrive prepared, reviewed and signed by your named accountant.

Why it's different

Software can't sign your accounts. We can.

Every "AI bookkeeping" tool ends the same way: a pile of suggestions you still have to check, and an accountant you still have to hire. Comma is the firm itself. The AI does the work humans shouldn't have to; a named, qualified accountant carries the professional responsibility — reviews the judgment calls, signs the filings, answers for the numbers.

  • A named accountant responsible for your engagement
  • Every regulated output human-reviewed before filing
  • Immutable audit trail on every number in your books
  • Professional-body oversight, professional indemnity
The deal, plainly:
AIcategorises, reconciles, watches, drafts — every day, for every transaction
Youanswer a handful of one-tap questions a month
Your accountantreviews, advises, signs, and is accountable

Pricing

Flat fee. Everything in.

No hourly billing, no setup fees, no surprises. 20–30% less than a specialist ecommerce firm — with your books done daily instead of quarterly.

Founding customers: free during beta, then 50% off your first year

Starter

£149/month

Single-channel sellers under £250k revenue.

  • 1 sales channel + 1 bank account
  • Quarterly VAT returns
  • Statutory accounts + CT600
  • Director's payroll + self-assessment
  • WhatsApp support, AI-first
Get started
Most sellers

Growth

£299/month

Multi-channel sellers, £250k–£1m. Most sellers land here.

  • Up to 3 channels + 3 bank accounts
  • Everything in Starter
  • Quarterly tax-planning review
  • Inventory + FBA reimbursement tracking
  • Channel P&L reporting
  • Quarterly call with your accountant
Get started

Scale

£499/month

Established sellers, £1m–£3m.

  • Unlimited channels + bank accounts
  • Monthly management accounts
  • 13-week cashflow forecasting
  • Multi-currency + OSS/IOSS for EU
  • Priority WhatsApp line
  • Monthly strategic call
Get started

Pro

£899/month

£3m+, multi-entity or complex.

  • Group consolidation
  • Investor + board reporting packs
  • Complex tax structures
  • Direct line, same-day SLA
Get started

Annual prepay: 10% off · switching from another firm: 2 months free · extra channels and directors from £25/month

FAQ

Fair questions.

Is Comma a real accounting firm?+

Yes. Comma is an accounting practice with a named, qualified accountant responsible for your engagement — not a software tool you operate yourself. AI does the daily work; every regulated output (VAT returns, statutory accounts, tax filings) is reviewed and signed off by a human accountant before it goes anywhere.

Which platforms do you support?+

Amazon (UK/EU/US), Shopify, eBay, Etsy, TikTok Shop, Walmart, Stripe, PayPal and UK bank feeds. Settlements, fees, refunds, reserves and multi-currency are handled properly — not dumped into one lump.

How is this different from Xero plus a bookkeeper?+

Xero gives you software and leaves the work to you. Traditional firms batch your books quarterly. Comma keeps your books current every day, asks you only the questions that genuinely need your judgment (typically a few per month, answerable in one tap), and a regulated accountant signs the output. You get your evenings back and numbers you can actually run the business on.

What does switching from my current accountant involve?+

Almost nothing on your side. You connect your channels and bank, and we handle the professional clearance letter, records transfer and opening balances — switching accountants is a routine, protected process in the UK. Mid-year switches are fine.

Is my data safe?+

Your data lives encrypted in UK/EU data centres, platform connections use read-only OAuth (we never see your passwords), and every change to your books is on an immutable audit trail. We never sell or share your data.

What does the AI actually do — and what does it not do?+

It categorises transactions against an ecommerce-specific chart of accounts, reconciles settlements, matches receipts, watches 40+ monitoring rules (VAT thresholds, deadlines, cash runway, margin shifts) and drafts returns. It does not sign anything, file anything, or make judgment calls that are legally yours or your accountant's — those always go through a human.

Spend your evenings on the business, not the books.

Set-up takes an afternoon. The first month will feel like hiring a finance team.