Accounting Software Built Specifically for UK Limited Companies
Not adapted from US software. Not simplified from enterprise. Built from the ground up for UK Ltd company directors.
AccountsOS is purpose-built accounting software for UK Ltd companies. It handles Companies House deadlines, CT600, dividends and director's loan accounts automatically via Finn, your AI accountant. £20/month all-in, 14-day free trial.
Traditional Cost
£20-50/month for Ltd-capable software
AccountsOS
£20/month with all Ltd features
You Save
Same or less, plus hours of time back
Free for 14 days • No credit card required
Sound familiar?
Using software designed for sole traders that doesn't understand Ltd company needs
Missing Companies House deadlines because your software doesn't track them
Manually calculating Corporation Tax and marginal relief
No proper dividend tracking or director's loan account management
There's a better way
AccountsOS understands UK limited companies inside out. Automatic Companies House deadline sync, Corporation Tax with correct marginal relief, dividend vouchers, director's loan tracking with S455 warnings, and proper UK Chart of Accounts. Finn, your AI accountant, handles all of it in the background. You just review and approve. £20/month, nothing extra.
Companies House deadline sync - never miss a filing
CT600 preparation with marginal relief calculations
Dividend voucher generation and tracking
Director's loan account with S455 tax warnings
UK GAAP compliant Chart of Accounts
Year-end accounts preparation
AccountsOS vs Typical accounting software
| Feature | AccountsOS | Typical accounting software |
|---|---|---|
| Monthly cost | £20/month, all-in | £20-50/month, often + add-ons |
| Companies House sync | Automatic, deadlines tracked | Manual entry or not available |
| CT marginal relief | Calculated automatically | Often manual or not supported |
| Dividend vouchers | Generated and tracked in-app | Often not included |
| Director's loan (S455) | Tracked with automatic warnings | Basic or not supported |
| Answering tax questions | Ask Finn, instant reply | Support ticket or forum |
| Receipt handling | Photo/email/WhatsApp - done in seconds | Manual upload or paid add-on |
Perfect for
Directors of UK limited companies
PSC (personal service company) owners
Small business directors managing their own accounts
Anyone fed up with software that wasn't designed for Ltd companies
Frequently Asked Questions
Why do I need Ltd company specific accounting software?
Limited companies have unique requirements: Corporation Tax instead of Income Tax, Companies House filings, dividend vs salary decisions, director's loan rules, and different expense categories. Generic software often gets these wrong or makes them harder than necessary.
How does the Companies House sync work?
AccountsOS connects to the Companies House API to pull your company details and filing deadlines automatically. Confirmation Statement due? Annual Accounts deadline? Corporation Tax filing date? All tracked and synced, with reminders before they're due.
Can it calculate my Corporation Tax correctly?
Yes, including the marginal relief calculations that trip up many founders. For profits between £50k and £250k, the CT rate isn't simply 25%. There's a complex relief calculation. AccountsOS handles this automatically.
What does AccountsOS cost?
£20/month, all-in. Every Ltd company feature is included: Companies House sync, CT600, dividends, director's loan, VAT/MTD, invoicing, and Finn. Try free for 14 days.
Ready to save Same or less, plus hours of time back?
Join UK founders who've switched to smarter, more affordable accounting.
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