Cheap Accountant UK: Finally, Accounting That Doesn't Break the Bank

Traditional accountants charge £100-300/month. AccountsOS gives you AI-powered accounting from just £20/month, everything included.

Start saving today

Save up to Up to £3,360/year

AccountsOS is a cheap UK accountant alternative at £20/month, flat, everything included. Finn, your AI accountant, handles bookkeeping, VAT/MTD, Corporation Tax and Companies House deadlines automatically. Try free for 14 days.

Not sure if AccountsOS is right for you?

Ask Finn anything about how it compares or what it would do for your business. No signup needed.

Traditional Cost

£100-300/month

AccountsOS

£20/month, everything included

You Save

Up to £3,360/year

Free for 14 days • No credit card required

Sound familiar?

Paying £150+/month for an accountant who takes days to reply

Getting a surprise bill every time you ask a question

Feeling like you're paying for expertise you rarely use

Not knowing if you're claiming everything you're entitled to

There's a better way

AccountsOS is the cheap accountant alternative UK founders have been waiting for. Finn, your AI accountant, handles your bookkeeping, VAT returns, and tax calculations 24/7, for a fraction of what you'd pay a traditional accountant. Throw receipts at Finn via photo, WhatsApp, or email. It does the books while you focus on your business.

Unlimited AI chat with Finn, ask questions anytime, no extra fees

VAT MTD submission to HMRC included

Receipt scanning and auto-categorisation

Corporation Tax calculations with marginal relief

Companies House deadline sync

Bank reconciliation with AI-suggested matches

On HMRC's list of MTD VAT software (opens gov.uk in a new tab)

AccountsOS vs Traditional accountant

Feature	AccountsOS	Traditional accountant
Monthly cost	£20/month, all-in	£100-300/month
Who does the data entry	Finn reads receipts and bank feeds	You gather docs, they key it in
Receipt handling	Photo, email or WhatsApp, done in seconds	Upload to portal or post
VAT/MTD filing	Included, filed direct to HMRC	Included but slow turnaround
Deadline tracking	Companies House + HMRC auto-synced	They remind you; you still chase
Getting answers	Ask Finn anytime, instant reply	Email; 1-3 day response typical
Real-time view of your books	Live P&L and cash flow always on	Quarterly or annual summaries

Perfect for

Solo founders running UK limited companies

Contractors and freelancers who've incorporated

Small business owners with £50k-£500k revenue

Anyone tired of overpaying for basic accounting

Frequently Asked Questions

Is AccountsOS really cheaper than an accountant?

Yes. Traditional accountants charge £100-300/month for basic bookkeeping and year-end accounts. AccountsOS costs £20/month and includes everything: bookkeeping, VAT returns, receipt scanning, and unlimited AI support via Finn. That's a saving of up to £3,360/year. There's also a 14-day free trial so you can verify the value before you pay a penny.

Can a cheap accounting solution handle my limited company?

Absolutely. AccountsOS is specifically designed for UK limited companies. We handle VAT MTD submissions, Corporation Tax calculations, dividend tracking, director's loan accounts, and Companies House compliance, all the things your accountant would do.

What's the catch with cheap accounting software?

No catch. We're able to offer competitive pricing because AI does the heavy lifting. Unlike traditional accountants who charge for every hour, Finn works 24/7 at no extra cost. You get unlimited questions, unlimited receipt uploads, and all features included in the flat £20/month.

Will I still need an accountant for year-end?

For most small limited companies, no. AccountsOS prepares your accounts, calculates Corporation Tax with correct marginal relief, and helps you file. Some businesses with complex needs (multiple entities, audits, international operations) may still benefit from occasional accountant input.

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Trustpilot

20 Jul 2026

I love the innovative approach to accounting

I love the innovative approach to accounting, which can often be quite dull. I particularly appreciate how interactive it is, including the emails, reminders, and the ability to anticipate the next step.

Ksenija · SI

Trustpilot

15 Jul 2026

Great UI, fast response

Great UI, very quick at fixing any errors/bugs.

Mitch Edwards · GB

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