Best Accounting Software for UK Small Business in 2026: Xero Wins, QuickBooks Has the Phone Line, and the Making Tax Digital List Sorts the Rest

Xero is first-party: Saaskly's own company has run on it for years. Crunch and FreeAgent carry first-party notes from our own use, one recent and unhappy, one old. The other eight are assessed on published pricing, HMRC's lists, vendor documentation and Trustpilot, and are labelled "Not yet tested". Prices were read on 8 September 2026 in pounds excluding VAT unless a profile says otherwise.

The winner

Xero: the one your accountant already uses

Xero wins on the question that decides this category: who will do your year end, and what do they want you on? Xero's partner programme claims 250,000 accountants and bookkeepers, every practice gets a free licence and a client console, and in the UK that has made it the default. It is on both HMRC lists, VAT and Making Tax Digital for Income Tax, and there are no per-user fees, so the director, a bookkeeper and the accountant share one plan. Grow at £39 a month has unlimited invoices and bills, bank feeds, VAT returns, smart document capture, payroll for one and expenses for one; Comprehensive at £55 adds multi-currency and payroll for five. Company Accounts and Tax, at £120 a year, files micro-entity accounts to Companies House and the CT600 to HMRC from the data already in Xero. Stripe and GoCardless are native, the app marketplace is the biggest here, and Xero publishes its own MCP server, so an AI assistant can work the ledger without a third party in the middle.

The honest caveats. There is no inbound phone line: Xero Central, the community forum and a callback are the support. Ignite at £18 caps you at twenty invoices a month, so the real entry price for a trading company is £39. Payroll and expenses are per person, CIS returns are £5 a month, and Xero has raised UK prices every September since 2021, so the £39 will not stay £39. Trustpilot is 4.1 on 11,320 reviews, and the recent one-stars are about bank feeds that stop working. None of that changes the verdict for a company that wants to be on the product its accountant knows best.

In our experience: Next Generation ICT Ltd, the company behind Saaskly, has run its books on Xero for years and chose it for exactly these reasons: most accountants support it, the range of integrations is huge, and the pricing is reasonable for what you get. Saaskly has no commercial relationship with Xero.

The runner-up

QuickBooks Online: the one with a phone line

If you want to ring someone, QuickBooks is the answer: UK phone support 8am to 7pm on weekdays and 8am to 6pm at weekends, messaging until 10pm, a free onboarding call and a switching service. Essentials at £38 a month after the same 90 per cent introductory discount gives three users, multi-currency and time tracking, the accountant's seat is free on every plan, CIS is included from Simple Start rather than a £5 add-on, and the AI features are the most specific in the category, from VAT pre-filing checks to anomaly detection. It is on both HMRC lists, its published UK bank-feed list is the longest we saw, and its official MCP server has 145 tools.

Why Xero edges it

Users and jurisdiction. QuickBooks' two cheaper plans are single-user, so the first extra login costs the jump from £16 to £38, and extra seats and payroll are priced only at checkout or by phone. Intuit's UK GDPR page reserves the right to store your data in the United States and describes Intuit as a data controller that uses customer data to improve its services. There is no in-product Corporation Tax or Companies House filing that we could find. And Trustpilot is 3.7 on 16,902 reviews, with a broken Shopify integration and invoices lost in a forced migration in the recent one-stars. Where QuickBooks wins outright is support and CIS, and for a construction firm or a first-time employer that may be enough.

The bank's own

FreeAgent (4.0) is the product that costs nothing if your business current account is with NatWest, Royal Bank of Scotland or Ulster Bank, or you use a Mettle account, because NatWest Group owns it. Everyone else pays £33 a month for a limited company or £19 for a sole trader, per company rather than per user, with 50 per cent off for six months. It files more from inside the product than anything else here: MTD VAT, Self Assessment, Final Accounts and Corporation Tax, with monthly payroll, projects, time tracking and Stripe, GoCardless and PayPal collection, and UK-based support accountants on the phone. HMRC lists it on both Making Tax Digital lists, twice on the Income Tax one. Trustpilot is 4.6. The limits are that there is one flat plan with nothing above it, receipt capture is capped at ten a month without a £5 add-on, and there is no official MCP server. We used FreeAgent years ago and found it basic; the product on the page today is not the one we remember, and we have scored what it is now.

Full comparison

The incumbent and the cheap full ladder

Sage Accounting (3.8) is the UK's own, London-listed and Newcastle-born, and it bundles two things the others charge for or lack: payroll with RTI and auto-enrolment on every plan (one employee included, five on Plus, then £1.85 each) and telephone support on every plan, with Sage Copilot thrown in. Standard at £43 a month after 90 per cent off for six months is the plan we score, with three users, CIS and thirty receipt captures a month; Plus at £59 has unlimited users, multi-currency and stock. It is on both HMRC lists. It sits fourth because Standard costs more than Xero's Grow for fewer users, receipt capture is metered, there is no official MCP server, and Sage's website blocks automated reading so we could not confirm which payment processors, certifications or data location sit behind it. Trustpilot is 4.0 on 20,065 reviews for the group as a whole, with repeated price rises the September 2026 complaint. Not yet tested by Saaskly.

Zoho Books (3.7) is the cheapest complete ladder: a free plan with an accountant seat and a thousand invoices a year, Standard at £12 a month (£10 on annual billing) for three users with VAT returns and bank feeds, and Corporation Tax and Companies House filing for micro-entities at £5 a year, the cheapest on this page by a mile. It is on both HMRC lists, has a UK phone line on weekdays, Stripe and GoCardless, and Zoho's suite-wide MCP server covers Books. Against it: MTD for Income Tax is "available on request" rather than switched on, receipt scanning is a paid add-on, UK payroll pricing is not published, data lives in an EU or US data centre chosen at sign-up with no UK option we could find, and the Trustpilot 3.9 is for zoho.com as a whole, with support quality the theme. Not yet tested by Saaskly.

The UK independents

Clear Books (3.6) is British from the code to the support desk: phone and email on every company plan, CIS reporting and submissions on Medium, a free Making Tax Digital for Income Tax plan for sole traders and landlords, and a partner programme with a claimed thousand UK practices. Medium at £34 a month (10 per cent off yearly, 20 per cent off two-yearly, 50 per cent off the first three months) is where VAT submissions start; Small at £16 does not file VAT, and Large at £44 is where multi-currency, expense claims and fixed assets live. Stripe, GoCardless and open-banking payments are integrated. The ecosystem is small, the API is on request, there is no MCP server, and Trustpilot is 3.9 on only 382 reviews. Not yet tested by Saaskly.

Pandle (3.5) is free forever and the free plan is the product: unlimited users, bank feeds, VAT returns and MTD Income Tax submissions to HMRC, multi-currency, Stripe feeds, quotes, projects and cashflow, with data on UK servers and a Trustpilot 4.3 on 1,357 unprompted reviews. Pro at £5 a month adds live chat, stock, PayPal feeds and multi-company. The company is The Accountancy Partnership under another name, and the practice is the upsell. What it lacks is the growing company's list: no payroll, CIS still under development, no GoCardless, no Corporation Tax filing, no phone line, no MCP server. Not yet tested by Saaskly.

QuickFile (3.4) prices by ledger size rather than plan: free to a thousand entries a year, £60 plus VAT a year above that, unlimited users and multi-currency throughout, MTD VAT returns, Stripe and GoCardless, and a Trustpilot 4.8 on 3,127 reviews, the best on this page. Bank feeds are £15 a year extra, and the MTD bridging module and the advanced features need the Power User subscription, whose price is not on the pricing page. No payroll, no phone support (a very active forum instead), no MCP server. For a technical owner who wants proper books for almost nothing, it is hard to beat. Not yet tested by Saaskly.

The rest of the field

FreshBooks (3.1) is the invoicing-first tool for a freelancer or service business, with the best time tracking and estimates here and card and BACS direct debit through Stripe, from £16 a month with 10 per cent off yearly and a 2026 price rise just applied. For a limited company it falls down on structure: no plan includes a second person, every team member is £8 a month, Lite and Plus cap billable clients at five and fifty, full double-entry arrives at Premium at £42, it is on HMRC's VAT list but not the Income Tax list, and there is no UK payroll, Corporation Tax or CIS. Support hours are US Eastern and Trustpilot is 3.7. Not yet tested by Saaskly.

Crunch (2.9) is an accountancy practice with software, and the £94-a-month Pro package for a limited company buys a dedicated accountant, VAT, director payroll, Corporation Tax and year-end accounts, which no pure software product offers. It is on HMRC's VAT list but not the Income Tax list, despite its marketing, and its own integrations page lists no Stripe, GoCardless or PayPal. We have marked it down on our own experience: the bank feed repeatedly misidentified banks, there was no Stripe integration, and the quality of the people we dealt with varied from excellent to poor. Trustpilot's 3.9 hides one-star themes of weeks of silence and accounts that could not be closed. The £4 software-only tier is thin.

The one we would leave

KashFlow (2.6) is last because IRIS, its owner since 2013, is visibly winding it down: the public changelog stops in October 2022, KashFlow Payroll is being migrated one-way to IRIS Staffology, accounting is being steered to IRIS Elements, and the REST API's own documentation says it is a work in progress not for production use. Business at £27.50 a month with payroll for five, multi-currency, stock, Stripe and GoCardless bundled looks fine on paper, and it is on both HMRC lists. Trustpilot is 1.3 on 167 reviews, 83 per cent one-star, with double billing and AI-answered tickets the summer 2026 themes. Existing users have their reasons; new ones do not. Not yet tested by Saaskly.

Bottom line

• Price the plan you will actually run, at the renewal price. The limited-company tier: Pandle free, QuickFile £5 a month equivalent, Zoho Books £12, KashFlow £27.50, FreshBooks £30 plus £8 a seat, FreeAgent £33 (free with NatWest, RBS, Ulster Bank or Mettle), Clear Books £34, QuickBooks £38, Xero £39, Sage £43, Crunch £94 with an accountant. The 90 per cent introductory offers at Xero, QuickBooks, Sage and KashFlow last six months.
• Check HMRC's lists, not the vendor's badge. All eleven are on the VAT list. FreshBooks and Crunch are not on the Making Tax Digital for Income Tax list, whatever their marketing says.
• Xero is the one we use and recommend, for the accountant network, unlimited users, the ecosystem and the MCP server, with the phone line as the price.
• QuickBooks Online if you want UK phone support seven days a week and CIS included; FreeAgent if you bank with NatWest Group or want Corporation Tax filed from inside the product; Sage if bundled payroll and a phone line matter more than the £4 premium over Xero.
• Zoho Books, Clear Books, Pandle or QuickFile for a cheaper ledger with VAT filing, in that order; Clear Books for CIS and a UK phone line, Pandle and QuickFile when the budget is nothing.
• FreshBooks only for a freelancer who lives in invoices. Crunch if you want the accountant bundled and are prepared for the service to vary. KashFlow: plan your move.

Prices checked 8 September 2026 on each vendor's UK pages in a UK browser, in pounds excluding VAT unless a profile says otherwise (FreshBooks does not state its VAT basis). HMRC recognition was read from HMRC's own Making Tax Digital software lists the same day. Trustpilot scores are from uk.trustpilot.com on the same day. Saaskly has no commercial relationship with any provider in this category; if that changes, the page will say so and the scores will not.