For accounting practices

The AI-native practice.
Your capacity stops scaling with headcount.

Every practice has two layers: the production work and the judgment. Bookkeeping, reconciliation, chasing paperwork, drafting returns on one side. Reviewing, advising and signing off on the other. AI-native means the first layer runs itself, so your team's time goes where the fees are.

Build your AI-native practice Choose how to use Finn

Built for the whole client book. Start at the pace that suits your practice.

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Practice FinnLive

What needs me this week?

F3 VAT returns drafted and ready for review. Birchfield needs a bank statement, I have chased it. Everything else is clean.

FFinn worked the whole client book continuously.

Recruit Finn

One accounting agent. Three ways into your practice.

Use the complete AccountsOS practice platform, bring Finn into the AI tools your team already uses, or put the accounting engine behind your own systems. The interface can change. The governed accounting work underneath stays the same.

Go all in

Run the practice on AccountsOS

One dashboard for the whole client book. Finn handles the bookkeeping, preparation and exceptions. Your team reviews, advises and signs off.

Explore the practice platform

Use your AI workspace

Bring Finn into Claude or ChatGPT

Keep working where your team already works. Connect the skill or MCP server and give your AI governed access to the books and accounting actions.

See the connection options

Integrate the layer

Put Finn behind your own systems

For established firms with proprietary software, use API, MCP or agent-to-agent connections instead of replacing the interface your people already know.

Explore API and MCP

In short

An AI-native practice is one where the production layer of the work, the bookkeeping, reconciliation and first drafts, is done by AI in the background, and qualified people spend their time on review, advice and sign-off. On AccountsOS that layer is Finn: it works every client's books continuously, prepares VAT returns and annual accounts across the whole book, and surfaces only the exceptions that need a human. The accountant stays the accountant. The difference is what the practice's biggest cost line is spent on, and what happens to margin when taking on ten more clients no longer means another hire.

Your AI team member

Finn at the core. Your practice at the front.

Use Finn out of the box, or give your practice a named and branded AI team member. We can configure the identity, practice context, dedicated email intake and website chat experience, then host and govern it on your behalf. Clients meet your firm's assistant. Your team keeps the relationship and the sign-off.

Practice name and identityDedicated emailClient chatFirm contextManaged by AccountsOS

Shape your practice agent

Tell us how clients should meet it and which workflow it should handle first.

How it runs

The production layer, running itself

The day-to-day of an AI-native practice on AccountsOS.

Everything feeds in

Bank feeds, receipts by WhatsApp or email, invoices, statements, Xero imports. Clients throw paperwork at Finn; nobody keys it in.

Finn does the work

Categorises, reconciles, chases what is missing, closes month end and drafts VAT returns and annual accounts, across every client at once.

Exceptions surface

You do not review everything. Clean books come through drafted and ready; blocked ones arrive with the blocker named.

Your team signs off

Review, adjust, approve, file. Finn never files anything. Judgment, advice and the client relationship stay yours.

What actually changes

The same practice, without the production ceiling

Where	Today	AI-native
Bookkeeping capacity	Growing the client book means hiring another bookkeeper.	The production layer is software. Capacity stops scaling with headcount.
Month end	Chase statements, key entries, tick and bash, client by client.	Prepared in the background across every client. You clear the exceptions and lock.
VAT quarter	A per-client grind against the deadline.	Batch-prepared across the whole book. Clean books get a draft; blocked ones get a named blocker.
Taking on a client	A setup project: software, logins, chart of accounts, opening balances.	Connect Xero or drop the export. Review the import plan. Live in days.
The partner's day	Managing the production line.	Reviewing, advising and signing off. The work clients actually pay for.

The economics

Margin is a capacity question

The biggest line on most practice P&Ls is production labour. Which means the growth question has always been the same one: can we take on more clients without another hire? When the production layer is AI-native, that trade breaks. Take on more clients with the team you have, or run the same book leaner. Either way, the difference lands on your margin, not on a job ad.

The software side is deliberately simple: 12 pounds a month plus VAT per live client, banded down as the book grows, 1.50 pounds plus VAT for dormant ledger files, and no practice minimum. A pilot costs pounds. The decision is about your workflow, not a platform contract.

Run your book through the pricing calculator

Not a roadmap

Live today, in production

Batch preparation across the whole client book: VAT returns and annual accounts drafted where books are clean, blockers named where they are not.
Practice Finn: one conversation across your entire portfolio, drill into any client in a tap.
Xero client-book migration by API: connect, choose the client organisations, review each import plan before anything posts.
HMRC-recognised software for Making Tax Digital VAT, filing real returns with official receipts. Companies House accounts filing built in.
Back-office clients who never need a login, sending receipts to Finn on WhatsApp, email or Telegram.
27 countries on one platform, so the odd overseas client does not need a second tool.

Fair questions

What practices ask us

Is this about replacing my team?

No. It is about what your team spends their day on. Finn does the production work: categorising, reconciling, chasing missing paperwork, drafting the returns. Your people do the work clients actually value, which is reviewing, advising and signing off. An AI-native practice grows its client book without growing the production layer underneath it.

Our client data is all in Xero. How real is the move?

Connect Xero from your practice dashboard, see every client organisation on the connection, and choose which to bring over. AccountsOS pulls each client's data from the Xero API and builds an import plan per client: accounts mapped, contacts, opening balances, VAT history. Nothing posts until you have reviewed the plan. Most practices pilot one client first, then move the book in batches.

Do our clients need accounts or logins?

No. You can run every client back-office: they never log in, and they can send receipts and invoices straight to Finn by WhatsApp, email or Telegram if you want them to. Clients who want their own access can have it. Either way the client relationship stays yours.

What does Finn say to our clients?

Finn is the assistant on YOUR team, and says so. Client-facing messages are signed as your practice's assistant on AccountsOS, and position your firm as the accountant: Finn assists, your team reviews, advises and signs off. We built it that way deliberately, because your client relationship is the asset.

What does it cost?

12 pounds a month plus VAT per live client, banded down automatically as your book grows, and 1.50 pounds a month plus VAT for dormant ledger files. No practice minimum, no per-user fees, no setup fee. A one-client pilot costs pounds, not a platform decision. Billing only ever starts when you explicitly switch it on.

Is AccountsOS recognised for MTD?

AccountsOS is HMRC-recognised software for Making Tax Digital VAT, filing real VAT returns in production with official HMRC receipts.On HMRC's list of MTD VAT softwareAnnual accounts file to Companies House electronically. The platform covers 27 countries, so a mixed book is not a blocker.

Build the practice around the book you want to run.

AccountsOS is built for the whole client book. Bring the practice across in stages, connect Finn to the AI tools you already use, or integrate the accounting layer into your own systems. You can prove the workflow on one client without making one client the ceiling.

Add Finn to your practice Connect or integrate Finn

Moving from Xero? The practice migration path

The AI-native practice.Your capacity stops scaling with headcount.