One tool to run your business. Not five subscriptions.
AccountsOS is your AI accountant. And because Finn runs your books, everything that feeds them lives in the same place: your contacts, your sales pipeline, quotes, contracts, invoices and chasing. One tool, £20 a month, instead of £100+ of apps that don't talk to each other.
Your books are the hub. Everything else feeds them.
Most businesses run a CRM that doesn't know about the invoices, an invoicing tool that doesn't know about the books, and a bookkeeping tool that knows about none of it. You end up the integration, copying the same client and the same numbers between four apps.
AccountsOS turns that around. The accounts sit at the centre, and the things that create the accounts — the deal, the quote, the contract, the invoice — live in the same place and share the same data. Finn works across all of it, so nothing gets typed twice.
From won deal to reconciled, in one thread
Finn doesn't just record the work. It helps you win it, then bills for it.
- 1
Win the deal
A lead moves through your pipeline. Finn drafts the follow-up email or WhatsApp and flags it when it's going cold.
- 2
Quote and sign
Turn the won deal into a quote and a contract. The client details are already there from the pipeline.
- 3
Invoice and chase
One tap turns the contract into an invoice. Finn chases it if it goes late.
- 4
Booked to your accounts
The payment lands, Finn reconciles it, and it's in your P&L. No re-keying, no second tool.
Stop paying for five tools to run one business
A typical separate stack, with the kind of tool the ICP actually reaches for:
Accounting software
Xero, QuickBooks
£14–30/mo
Receipt capture
Dext
£20/mo
CRM & contacts
HubSpot, Pipedrive
£15–45/mo
Quotes & proposals
a proposal tool
£15/mo
Invoicing & chasing
FreshBooks, Chaser
£15–25/mo
Contracts & e-sign
DocuSign
£10/mo
A typical stack
£100+/mo
AccountsOS
All of the above, run by Finn, in one place.
£20/mo
Typical published starting prices, June 2026. Most businesses pay for several at once, and prices rise with users and add-ons. Your stack will vary.
Everything in one place
Bookkeeping & receipts
Bank feeds, receipts and bills land in one place and Finn categorises them. Your books keep themselves.
Receipt captureContacts & CRM
Every client, supplier and lead with full history, in the same place as the money they owe you.
Contacts & CRMSales pipeline
Track deals from lead to won on a board. Finn nudges the ones going cold and drafts the follow-up.
Pipeline & projectsQuotes, estimates & contracts
Turn a won deal into a quote, a contract and an invoice without re-typing a thing.
Estimates & quotesInvoicing & chasing
Send invoices, set recurring ones, and let Finn chase the late payers so you don't have to.
InvoicingTalk to all of it
Ask Finn anything across your books, clients and pipeline, on WhatsApp, Slack, Telegram or email.
Messaging channelsOne bill, one login, one source of truth
- One set of data — your client, your deal, your invoice and your books all share it. No re-keying.
- Finn works across all of it: chases the late invoice, nudges the cold deal, files the VAT.
- £20/month flat, everything included. No per-seat CRM pricing, no per-feature add-ons.
- Proper accounting underneath: double-entry ledger, P&L, Balance Sheet, VAT filed to HMRC.
- Cancel the other five subscriptions.
Run the whole thing from one place
Your books, your clients, your pipeline and your invoicing, with Finn across all of it. 14-day free trial, no card.
Start free