For most UK small businesses choosing between Xero vs QuickBooks vs FreeAgent in 2026, Xero is the best all-rounder, QuickBooks is the cheapest entry point with strong tax tools, and FreeAgent is the smartest pick for freelancers and contractors, especially anyone who banks with NatWest, Royal Bank of Scotland or Mesa, where it comes free. All three are HMRC-recognised for Making Tax Digital, so the right choice comes down to your size, your bank and how hands-on you want to be.
The deciding factor this year is Making Tax Digital for Income Tax (MTD for IT), which becomes mandatory from 6 April 2026 for sole traders and landlords with qualifying income over £50,000. For many, picking software that keeps digital records and files quarterly updates is no longer optional.
Quick Comparison at a Glance
| Feature | Xero | QuickBooks | FreeAgent |
|---|---|---|---|
| Best for | Growing SMEs, VAT-registered | Budget-conscious, strong tax estimates | Freelancers, contractors, landlords |
| Entry price (approx, 2026) | £16/mo | £10/mo | £19/mo (or free with NatWest/RBS/Mesa) |
| Free with a bank account | No | No | Yes |
| MTD for VAT recognised | Yes | Yes | Yes |
| MTD for Income Tax ready | Yes | Yes | Yes |
| Payroll | Add-on | Add-on | Included |
| Self Assessment filing | Via accountant/add-on | Built-in (Sole Trader tier) | Built-in |
| Unlimited users | Yes | Tier-dependent | Yes |
Pricing changes regularly and excludes VAT, always confirm the current rate before subscribing.
Xero: The Scalable All-Rounder
Xero is the market leader for UK small and growing businesses, and it shows in the polish. Bank feeds reconcile cleanly, the app ecosystem is enormous, and every plan includes unlimited users, a genuine saving once you bring in a bookkeeper or business partner.
It handles multi-currency, project tracking and inventory on higher tiers, and integrates with hundreds of tools from Stripe to Shopify. It is fully recognised for both MTD for VAT and MTD for Income Tax.
The trade-off: Xero has no built-in Self Assessment tax return, so sole traders typically file through an accountant or a third-party add-on. It is also the priciest of the three for very basic use.
Choose Xero if you are VAT-registered, expect to grow, or want your accountant working in the same system you do.
QuickBooks: The Budget-Friendly Tax Engine
QuickBooks (Intuit) competes hard on price and on tax forecasting. Its Sole Trader and Self-Employed tiers estimate your Income Tax and National Insurance in real time and let you file Self Assessment directly, handy for freelancers who want to see their liability building through the year.
Mileage tracking is built into the mobile app, which matters given HMRC's approved rates of 55p per mile for the first 10,000 business miles and 25p thereafter. It is MTD-recognised across VAT and Income Tax.
The downsides: user limits on cheaper tiers, an interface some find busier than Xero's, and add-on costs that climb as you scale.
Choose QuickBooks if you want the lowest entry price and live tax estimates without a separate accountant.
FreeAgent: Built for Freelancers and Contractors
FreeAgent is purpose-built for the UK self-employed, contractors and small limited companies. Its standout feature is the estimated Self Assessment and Corporation Tax dashboard, which projects what you'll owe based on real transactions, plus built-in time tracking and project costing.
The killer detail: it is free for life with a business current account at NatWest, Royal Bank of Scotland or Mesa (FreeAgent is owned by NatWest Group). For a freelancer that can mean a fully MTD-compliant package at zero software cost. It is recognised for Making Tax Digital for Income Tax, and payroll is included rather than an add-on.
The limitation: it is less suited to larger, complex or inventory-heavy businesses, where Xero pulls ahead.
Choose FreeAgent if you are a contractor, freelancer or landlord, particularly if you bank where it comes free.
What About Making Tax Digital in 2026/27?
From 6 April 2026, MTD for Income Tax is mandatory for sole traders and landlords whose qualifying income exceeds £50,000. The threshold falls to £30,000 from April 2027 and £20,000 from April 2028. You'll need to keep digital records and submit quarterly updates through recognised software, all three packages here qualify.
Key 2026/27 Figures Your Software Should Track
- Personal allowance: £12,570
- Higher-rate threshold: £50,270; additional rate: £125,140
- VAT registration threshold: £90,000 taxable turnover
- Dividend allowance: £500
- Trading allowance: £1,000
- Annual Investment Allowance: £1,000,000
- EV company car Benefit-in-Kind: 4%
Good software flags when you're approaching the VAT threshold and applies allowances correctly, but it won't replace a reviewer's judgement on what's claimable. That's where our bookkeeping services bridge the gap.
Xero vs QuickBooks vs FreeAgent: So Which Should You Pick?
There is no universal winner, only a best fit. A VAT-registered agency with staff should lean towards Xero. A cost-focused freelancer wanting live tax figures may prefer QuickBooks. A contractor or landlord banking with NatWest, RBS or Mesa should almost certainly start with FreeAgent and pay nothing for it.
Whatever you choose, the software is only as accurate as the bookkeeping behind it. Categorising transactions wrongly or missing allowances costs far more than a monthly subscription.
Frequently Asked Questions
Which accounting software is cheapest for UK sole traders?
QuickBooks usually has the lowest headline price, but FreeAgent is effectively cheapest if you bank with NatWest, Royal Bank of Scotland or Mesa, where it is free for as long as you hold the account.
Are Xero, QuickBooks and FreeAgent all MTD-compliant?
Yes. All three are HMRC-recognised for Making Tax Digital for VAT and for Income Tax, so each can keep digital records and file the quarterly updates required from April 2026.
Do I need accounting software if I earn under £50,000?
Not yet by law, but it is sensible. MTD for Income Tax extends to income over £30,000 from April 2027 and £20,000 from April 2028, so adopting compliant software early avoids a rushed switch later.
Can I switch software part-way through the tax year?
Yes, and all three offer data import tools. It's cleanest to move at the start of a tax year or accounting period, and worth getting your opening balances checked. See our FAQ for more on transitions.
Still unsure which platform fits your business, or want someone to run the books while you run the company? Get in touch with Zmartly and we'll recommend the right software for your setup and handle the bookkeeping that keeps it accurate.
