Xero vs QuickBooks vs Sage vs FreeAgent 2026 — The Complete UK Guide

📊 UK accounting software — four-way comparison 2026

Xero vs QuickBooks vs Sage vs FreeAgent 2026 — The Complete UK Guide

Xero vs QuickBooks vs Sage vs FreeAgent covers every major UK accounting platform in one place. We’ve reviewed all four independently and compared them across pricing, MTD compliance, payroll, AI features, and who each is genuinely best suited to in 2026.

All four independently reviewed
UK GBP pricing
Updated May 2026
MTD compliance verified

Updated May 2026 · Independently reviewed · This page contains affiliate links — see our affiliate disclosure

The Xero vs QuickBooks vs Sage vs FreeAgent comparison covers the four platforms that account for the vast majority of UK small business accounting software in 2026. All four are HMRC-recognised for MTD. All four handle invoicing, bank feeds, and Self Assessment. The differences that matter are pricing, payroll, integrations, ease of use, and — crucially — which one your accountant uses. See GOV.UK MTD guidance for the full HMRC-recognised software list.

Best overall

Xero

From £16/mo

UK accountants’ default. Unlimited users, 1,000+ integrations, JAX AI. Best for growing businesses, accountant-managed accounts, and anyone needing the widest integration ecosystem.

Full Xero review →

Best value

QuickBooks

From £10/mo

Best sole trader value — MTD included at £10/mo. Strongest reporting and AI. Best for sole traders, freelancers, and reporting-heavy businesses without payroll complexity.

Full QuickBooks review →

Best for payroll

Sage

From £18+VAT/mo

Payroll bundled on all plans. 40+ years UK compliance. Best for businesses with 5+ employees, CIS contractors, and anyone migrating from Sage 50 desktop.

Full Sage review →

Best free option

FreeAgent

Free (NatWest/RBS)

Free for NatWest, RBS, Ulster Bank, and Mettle customers. UK-built, simplest interface, direct Self Assessment filing, time tracking. Best for freelancers and contractors.

Full FreeAgent review →


Xero vs QuickBooks vs Sage vs FreeAgent — who wins each category

Best price — free
FreeAgent
Free for NatWest, RBS, Ulster Bank, and Mettle customers — full platform, no restrictions. No other major accounting platform offers this.

Best price — paid sole trader
QuickBooks
£10/month Sole Trader plan includes MTD quarterly submissions — the cheapest paid MTD-compliant option from any major provider.

Best for payroll
Sage
Payroll bundled on all plans at no extra charge — RTI, pension auto-enrolment, P11Ds. For 5+ employees, Sage is typically cheaper than Xero or QuickBooks plus payroll add-on.

Best integrations
Xero
1,000+ integrations — the largest ecosystem of any UK accounting platform. UK developers build for Xero first. If you rely on third-party tools, Xero has the widest compatibility.

UK accountant adoption
Xero
The majority of UK accounting practices are Xero-trained. Using Xero means your accountant works in familiar territory — potentially saving fees and improving collaboration.

Best reporting
QuickBooks
The strongest reporting suite of any platform in this comparison — customisable P&L, cash flow forecasting, class-level tracking, and budget vs actual reporting.

Best AI assistant
QuickBooks
Intuit Assist is the most capable AI assistant — transaction categorisation, plain-English financial queries, and anomaly detection. Xero’s JAX is strong but Intuit Assist is ahead in 2026.

Best for Self Assessment filing
FreeAgent
FreeAgent files Self Assessment directly to HMRC from within the platform. Xero and Sage provide estimates; QuickBooks provides estimates. FreeAgent’s end-to-end filing is the most complete.

Best UK phone support
Sage & QuickBooks
Both Sage and QuickBooks offer UK-based phone support 7 days a week. Xero has no phone support. FreeAgent offers chat and email only. For phone support, Sage and QuickBooks are tied.

Best for time tracking
FreeAgent
Built-in time tracking with billable hours logged against projects and invoices generated directly from time entries. The other three either exclude time tracking or require third-party apps.

Best for growing businesses
Xero
Unlimited users, 1,000+ integrations, seamless upgrade path from sole trader to SME. Xero scales the furthest of the four without requiring platform migration.

Best for CIS contractors
Sage
CIS (Construction Industry Scheme) support is built natively into Sage. The other three require third-party apps or workarounds for CIS monthly returns and deduction tracking.


Xero vs QuickBooks vs Sage vs FreeAgent — full feature comparison 2026

Feature Xero QuickBooks Sage FreeAgent
Starting price £16/mo £10/mo (Sole Trader) £18+VAT/mo Free (NatWest/RBS)
Free tier Trial only Trial only Sage Sole Trader (non-VAT) Full platform free (qualifying bank)
MTD ITSA — cheapest plan £16/mo (Ignite) £10/mo (Sole Trader) £39+VAT/mo (Standard — Start excludes MTD ITSA) Free or £19+VAT/mo
Users Unlimited all plans Per-user charges on higher plans Varies by plan Single user (sole trader)
Payroll Add-on cost Add-on cost Bundled — all plans Separate (limited company plan)
Self Assessment filing Estimate only Estimate only Varies by plan Direct to HMRC
AI assistant JAX Intuit Assist — strongest Sage Copilot AI categorisation
AI invoice chasing Reminders Reminders Copilot Payments Agent Reminders
Time tracking Via app Limited Built in
App integrations 1,000+ Strong Moderate Limited
UK phone support No phone 7 days 7 days Chat/email only
Reporting Strong Strongest Good Basic
CIS support Via app Via app Built in
Multi-currency Comprehensive plan Plus plan Plus plan Limited
UK accountant adoption Dominant Growing Strong Popular (freelancer specialists)
UK brand NZ USA UK Edinburgh
⚠️ Critical MTD note: Sage Accounting Start (£18+VAT/mo) does not include MTD for Income Tax quarterly submissions — you need Sage Standard (£39+VAT/mo) for MTD ITSA compliance. Xero, QuickBooks, and FreeAgent all include MTD ITSA on their entry-level plans. If you’re above the £50,000 threshold, verify Sage’s current MTD feature set before subscribing to the Start plan.

Xero vs QuickBooks vs Sage vs FreeAgent — who should choose which

Choose Xero if: Your accountant uses Xero · You need 1,000+ integrations · You’re planning to grow or incorporate · You want unlimited users without paying more · You need multi-currency from a cloud-first platform

Choose QuickBooks if: You’re a sole trader needing MTD at the lowest price (£10/mo) · You need the best reporting and AI · You have US business connections · You want the strongest mobile app for expense tracking · You sell products and need inventory management

Choose Sage if: You have 5+ employees on payroll — bundled payroll makes Sage cheaper · You’re in construction and need CIS built in · You’re migrating from Sage 50 desktop · You want UK-based phone support 7 days a week · You want the deepest UK payroll compliance

Choose FreeAgent if: You bank with NatWest, RBS, Ulster Bank, or Mettle — it’s free · You’re a freelancer or contractor who bills by the hour · You want direct Self Assessment filing built in · You’re a sole trader who is also a landlord — FreeAgent handles both income sources clearly


Xero vs QuickBooks vs Sage vs FreeAgent — pricing at a glance 2026

User type Xero QuickBooks Sage FreeAgent
Sole trader · no VAT · MTD £16/mo £10/mo £39+VAT/mo (MTD ITSA) Free or £19+VAT/mo
VAT registered sole trader £16/mo £14/mo (Simple Start) £18+VAT/mo Free or £19+VAT/mo
Small biz · 5 employees · payroll £33 + payroll add-on £34 + payroll add-on £18+VAT/mo (bundled) N/A
NatWest/RBS customer £16/mo £10/mo Free (Sole Trader limited) £0 — full platform

Frequently asked questions — Xero vs QuickBooks vs Sage vs FreeAgent

Xero vs QuickBooks vs Sage vs FreeAgent — which is best for UK sole traders?

For UK sole traders in 2026, the Xero vs QuickBooks vs Sage vs FreeAgent question has a clear answer depending on your banking. If you bank with NatWest Group, use FreeAgent — it’s free and built specifically for sole traders. If you don’t, QuickBooks at £10/month is the best-value MTD-compliant option — significantly cheaper than Xero (£16/mo) and much cheaper than the Sage plan that includes MTD ITSA (Standard at £39+VAT/mo).

Xero vs QuickBooks vs Sage vs FreeAgent — which is cheapest?

FreeAgent is cheapest for NatWest Group customers — it’s free. QuickBooks is cheapest for paid standalone plans at £10/month. Sage is cheapest for businesses with employees where bundled payroll makes it more cost-effective than Xero or QuickBooks plus payroll add-ons. Xero at £16/month sits in the middle on price but offers the most for growing businesses. The Xero vs QuickBooks vs Sage vs FreeAgent pricing comparison always depends on your specific situation.

Xero vs QuickBooks vs Sage vs FreeAgent — which do UK accountants prefer?

Xero dominates UK accountant preferences — the majority of UK accounting practices are Xero-trained. FreeAgent is popular with accountants specialising in freelancers and contractors. QuickBooks is growing in UK accountant adoption. Sage has strong uptake among practices with manufacturing and construction clients. Ask your accountant which they prefer before making the Xero vs QuickBooks vs Sage vs FreeAgent decision — their recommendation should carry significant weight.

Xero vs QuickBooks vs Sage vs FreeAgent — which handles MTD best?

All four are HMRC-recognised for MTD. The key difference: Sage Accounting Start does not include MTD for Income Tax quarterly submissions — you need Sage Standard (£39+VAT/mo). Xero, QuickBooks, and FreeAgent all include MTD ITSA on entry-level plans. FreeAgent has the longest MTD pilot track record (since 2023). Xero launched the most advanced MTD AI data capture in February 2026. On compliance itself, all four are equivalent — the differences are in surrounding features and pricing.

Can I switch between Xero, QuickBooks, Sage and FreeAgent?

Yes — all four support data migration. Switching typically involves exporting your chart of accounts, opening balances, and transaction history as CSV and importing into the new platform. Most migrations take 1-2 weeks for small businesses. The exception is Sage 50 desktop to Sage Accounting — that’s the cleanest migration path if you’re a legacy Sage user. Switching from Sage Start to Sage Accounting requires a new subscription — you can’t upgrade directly.


Xero vs QuickBooks vs Sage vs FreeAgent — the bottom line

The Xero vs QuickBooks vs Sage vs FreeAgent comparison doesn’t have a single winner — it has four different winners for four different situations. The practical decision tree:

Bank with NatWest/RBS/Ulster/Mettle?FreeAgent (free)
Sole trader, no payroll, want cheapest paid option?QuickBooks (£10/mo)
Have employees, want payroll bundled?Sage
Growing business, accountant uses Xero, need integrations?Xero

Xero

From £16/mo · unlimited users · 1,000+ integrations

Read review →

QuickBooks

From £10/mo · MTD included · best reporting

Read review →

Sage

From £18+VAT/mo · payroll bundled · UK brand

Read review →

FreeAgent

Free (NatWest/RBS) · time tracking · SA filing

Read review →

→ See also: Xero vs QuickBooks vs Sage · Xero vs QuickBooks · Xero vs Sage · QuickBooks vs Sage · Xero vs FreeAgent · FreeAgent vs QuickBooks · Sage vs FreeAgent · Best AI tools for UK sole traders

Last updated: May 2026. UK GBP pricing correct at time of writing. Verify MTD ITSA feature availability with Sage before subscribing to Accounting Start. This page contains affiliate links — see our affiliate disclosure for details.