Every UK freelancer and sole trader needs accounting software — not for bookkeeping enthusiasm, but because HMRC requires it. Making Tax Digital for Income Tax (MTD ITSA) launched in April 2026 for those earning over £50,000, with lower thresholds following in 2027 and 2028. That means quarterly digital submissions, not just an annual Self Assessment return. The software you choose determines how painful or painless that process is. This guide compares the six most relevant platforms for self-employed people in the UK, from the market leaders to the free options, and tells you exactly who each one suits.
Why Self-Employed People Need Accounting Software
The old approach — a spreadsheet updated in January — no longer works for most self-employed people. Three forces are making proper accounting software a practical necessity rather than an optional upgrade:
Making Tax Digital (MTD). From April 2026, freelancers and landlords with income above £50,000 must use HMRC-approved software to maintain digital records and submit quarterly income and expense updates. The threshold drops to £30,000 in April 2027 and £20,000 in April 2028. Non-compliance triggers a points-based penalty system: four late quarterly submissions = £200 fine, escalating from there. See our full MTD for Income Tax guide for the complete rules and timeline.
Invoice automation. Chasing invoices manually wastes time and creates cash flow risk. Good accounting software sends invoices in two clicks, tracks payment status, sends automatic reminders, and gives you a live view of what is owed. For a freelancer billing 10–20 clients per month, this alone justifies the subscription.
Tax estimates in real time. Knowing your estimated tax bill throughout the year — not as a January shock — lets you set aside the right amount each month. FreeAgent and QuickBooks both calculate your Self Assessment liability in real time based on your actual income and expenses. This eliminates the cash flow crisis that catches most new sole traders when their first tax bill arrives.
The Full Comparison: Six Platforms Side by Side
| Software | Monthly Price | MTD-ITSA | Bank Feeds | Invoicing | Payroll | Self Assessment | Mobile App |
|---|---|---|---|---|---|---|---|
| FreeAgent | £19 (sole trader) / £29 (Ltd) — or free via NatWest/RBS/Mettle | ✅ Full | ✅ Automated | ✅ Full | ✅ Add-on | ✅ Integrated | ✅ iOS + Android |
| QuickBooks Sole Trader | £12/month | ✅ Full | ✅ Automated | ✅ Full | ❌ Separate plan | ✅ Integrated | ✅ iOS + Android |
| Xero | £15–£42/month | ✅ Full | ✅ Automated | ✅ Full | ✅ Starter plan | ⚠️ Via Xero Tax (add-on) | ✅ iOS + Android |
| Sage Accounting Individual | Free (basic) / £7/month (full) | ✅ Full | ✅ Automated | ⚠️ Paid tier only | ❌ Separate product | ❌ Not included | ✅ iOS + Android |
| Wave | Free (US-focused) | ❌ Not HMRC-approved | ❌ UK banks limited | ✅ Full | ❌ US only | ❌ | ✅ |
| Coconut | Free / £9.99/month | ✅ Quarterly tracking | ✅ Open Banking | ⚠️ Basic | ❌ | ⚠️ Basic | ✅ iOS + Android |
Important note on Wave: Wave is a US product. It lacks HMRC-approved MTD integration and has limited compatibility with UK bank feeds. It is not a viable option for UK sole traders who need to comply with MTD for VAT or MTD for Income Tax. The free invoicing tool is useful as a standalone, but it cannot replace accounting software for UK tax purposes.
FreeAgent: Best for Freelancers and Contractors
FreeAgent was built specifically for UK freelancers, contractors, and small businesses — and it shows. The interface is designed for people who are not accountants, the terminology is plain English, and the Self Assessment integration is the most seamless of any platform in this comparison.
What it does well:
- Self Assessment built in. FreeAgent calculates your tax liability in real time and files your Self Assessment directly with HMRC. No manual data transfer, no bridging software. For sole traders doing their own tax return, this is worth the price of the subscription alone.
- Free via NatWest, Royal Bank of Scotland, or Mettle. If you bank with any of these (Mettle is NatWest Group's free digital business account), FreeAgent is completely free for the lifetime of your account. This is the single best-value deal in UK accounting software. For freelancers who need a business bank account anyway, opening a Mettle account to unlock free FreeAgent is the obvious move.
- Project and time tracking built in. FreeAgent lets you track time against projects and convert timesheets to invoices automatically — a feature that QuickBooks and Xero charge extra for or exclude entirely from entry plans.
- MTD ITSA fully supported. FreeAgent is HMRC-approved for Making Tax Digital for Income Tax and handles quarterly submissions natively.
Limitations: FreeAgent is less suited to product-based businesses (limited inventory management), multi-currency invoicing on the standard plan is restricted, and the reporting suite is lighter than Xero. For limited companies with complex needs, Xero is the stronger choice.
Price: £19/month (sole trader), £29/month (limited company). Free with NatWest, RBS, or Mettle business account. 30-day free trial available.
QuickBooks Sole Trader: Best Budget Option
QuickBooks rebuilt its UK sole trader product from the ground up for MTD ITSA. The new "QuickBooks Sole Trader" plan replaces the discontinued "Self-Employed" product and is purpose-designed for MTD compliance at a lower price point than any full-featured competitor.
What it does well:
- Cheapest full-featured option at £12/month. For freelancers watching costs, QuickBooks Sole Trader offers automated bank feeds, invoicing, expense tracking, MTD quarterly submissions, and Self Assessment at the lowest price of any MTD-compliant full-featured platform.
- Best mobile app in the category. QuickBooks' mobile app is consistently rated the most polished of the major platforms — transaction categorisation, receipt scanning via camera, and mileage tracking via GPS are all genuinely useful for freelancers working on the go.
- AI-assisted transaction categorisation. Intuit Intelligence (QuickBooks' AI layer) learns from your categorisation patterns and automates routine entries, reducing monthly bookkeeping time materially over the first few months.
- Consumer365 rated best for UK sole traders (Feb 2026). The platform received top ratings specifically for ease of use, MTD compliance support, and mobile functionality for self-employed users.
Limitations: Payroll requires a separate, more expensive plan. Xero has deeper accountant integration (most UK accountants prefer Xero). The sole trader plan has limited multi-currency support. No project tracking at the Sole Trader tier.
Price: £12/month (Sole Trader). Higher tiers from £28/month with payroll. 30-day free trial.
Xero: Best for Small Limited Companies
Xero is the default choice among UK accountants and bookkeepers — if your accountant manages your books, there is a strong chance they prefer Xero and will work more efficiently in it. For growing businesses and small limited companies, Xero's depth justifies its higher price point.
What it does well:
- Accountant ecosystem. More UK chartered accountants use Xero than any other platform. If you have (or plan to have) an accountant, Xero is the path of least resistance — real-time shared access, no data export/import friction, and a network of Xero-certified advisors.
- Multi-currency from the Established plan. Businesses invoicing overseas clients in foreign currencies need Xero's Established plan (£42/month) — none of the other platforms in this comparison handle multi-currency as cleanly at any price point.
- Payroll included from Starter. Xero includes payroll for up to 5 employees on its Starter plan (£15/month), making it the most cost-effective option for small limited companies paying salaries.
- JAX (Just Ask Xero) AI assistant. Xero's 2025-launched AI assistant provides cashflow forecasting, anomaly detection, and plain-English financial summaries. Still maturing, but ahead of competitors on AI-assisted insights.
Limitations: Self Assessment filing requires Xero Tax (an additional paid product) — Xero alone does not file your personal tax return, unlike FreeAgent and QuickBooks. The 2024–25 price restructuring removed the competitive value advantage Xero had at lower price points. At £15/month for Starter, it is slightly more expensive than QuickBooks for basic sole trader use.
Price: Starter £15/month (basic invoicing + payroll 1–5 employees), Standard £30/month, Established £42/month (multi-currency, projects, analytics). 30-day free trial.
Sage Accounting Individual: Best Free Option
Sage rebuilt its sole trader product specifically for MTD ITSA — launching a free tier that is genuinely MTD-compliant, not a limited trial. For freelancers who want zero software cost and are comfortable with a more basic feature set, Sage Free is the most credible free option.
What it does well:
- Genuinely free with full MTD ITSA support. Sage is alone among the major platforms in offering a permanent free tier that supports automated bank feeds, income/expense recording, and MTD for ITSA quarterly submissions.
- Mobile-first design. "Swipe to categorise" for transactions, AI-powered receipt scanning, and a purpose-built mobile UI. For freelancers who manage finances on their phone, the UX is better than Xero's mobile experience.
- Paid tier is just £7/month. For unlimited invoicing and receipt scanning automation, the paid tier is the cheapest way to get a full invoicing workflow on top of MTD compliance.
Limitations: No Self Assessment filing integration at any tier (requires a separate Sage product or accountant). Limited integrations compared to Xero and QuickBooks. Less established accountant ecosystem. The free tier lacks invoicing — you cannot send invoices from Sage Free, which limits its usefulness for most freelancers who need to bill clients.
Price: Free (basic) / £7/month (full invoicing + automation).
Best For Each Use Case
| Profile | Best Choice | Reason |
|---|---|---|
| Freelancer / contractor (no employees) | FreeAgent (free via Mettle/NatWest) | Self Assessment integrated, project tracking, purpose-built for sole traders. Free with qualifying bank account. |
| Sole trader on a tight budget | QuickBooks Sole Trader (£12/month) | Cheapest full-featured MTD-compliant option with the best mobile app. |
| Small limited company | Xero Standard (£30/month) | Accountant ecosystem, payroll included, multi-user access, depth for growing businesses. |
| Side hustler testing the water | Sage Accounting Individual Free | Zero cost, MTD-compliant record keeping. Upgrade when income justifies it. |
| Freelancer with an accountant | Xero Starter (£15/month) | Accountant ecosystem lock-in. Your accountant will work faster in Xero than in any other platform. |
| Freelancer approaching £50,000 income | FreeAgent or QuickBooks | Both handle MTD ITSA quarterly submissions natively. Get set up before you hit the threshold. |
Making Tax Digital: What Your Software Must Do
From April 2026, sole traders and landlords with income above £50,000 must comply with MTD for Income Tax Self Assessment (MTD ITSA). From April 2027, the threshold drops to £30,000. From April 2028, to £20,000.
MTD ITSA compliance requires your software to:
- Maintain digital records of income and expenses (no more manual spreadsheets above the threshold)
- Submit quarterly income and expense summaries to HMRC (four per year, replacing the single annual return)
- File a final year-end declaration to confirm the annual figures
All four main platforms — FreeAgent, QuickBooks, Xero, and Sage Accounting Individual — are HMRC-approved for MTD ITSA. Wave is not HMRC-approved and should not be used by anyone who needs MTD compliance.
HMRC's points-based penalty system for MTD non-compliance: each late quarterly submission earns one penalty point. At four points, a £200 fine is triggered. Each subsequent late submission adds another £200. Points expire after 24 months of clean compliance.
For the full MTD timeline, quarterly submission deadlines, and how to set up your software correctly, see our Making Tax Digital guide for freelancers and sole traders.
Free vs Paid: What You Actually Lose
The "free" accounting software market in the UK is thin. Here is what you give up on free tiers:
| Feature | Sage Free | FreeAgent Free (via bank) | Wave Free |
|---|---|---|---|
| Invoicing | ❌ Not included | ✅ Full | ✅ Full |
| Bank feeds (automated) | ✅ Manual or automated | ✅ Automated | ❌ UK banks limited |
| MTD ITSA quarterly submissions | ✅ Full | ✅ Full | ❌ Not HMRC-approved |
| Self Assessment filing | ❌ | ✅ Full | ❌ |
| Receipt scanning | ❌ (Paid tier) | ✅ Full | ✅ Full |
| Expense tracking | ✅ Basic | ✅ Full | ✅ Full |
| Multi-currency | ❌ | ❌ | ✅ Basic |
| UK-specific tax support | ✅ | ✅ | ❌ |
The verdict: if you bank with NatWest, RBS, or Mettle, FreeAgent free is the best zero-cost accounting solution available for UK freelancers — full functionality, full MTD compliance, full Self Assessment. If you bank elsewhere, Sage Free covers MTD record-keeping but lacks invoicing (a critical gap for most freelancers). Wave is not appropriate for UK MTD compliance.
If none of the free options fit, QuickBooks Sole Trader at £12/month is the most cost-effective paid entry point for full functionality.
Integration with HMRC and Making Tax Digital
All MTD-compliant software connects directly to HMRC's API — submissions go straight from your software to HMRC without manual data entry. The workflow is:
- Connect your bank account via Open Banking (takes 5–10 minutes; re-authorise every 90 days)
- Categorise transactions as income or expenses (most software does this automatically via AI after a few weeks of learning)
- Review and submit quarterly — the software generates the summary and sends it directly to HMRC via the Making Tax Digital API
- File your end-of-year declaration to confirm the annual totals (replaces the traditional Self Assessment return for MTD users)
The quarterly deadlines are: 5 August (Q1: April–June), 5 November (Q2: July–September), 5 February (Q3: October–December), 5 May (Q4: January–March). Miss these and you start accumulating penalty points.
If you are approaching the £50,000 income threshold for 2026/27, do not wait until April 2026 to set up your software. HMRC strongly recommends signing up for MTD ITSA and completing a voluntary dry run before the mandated start date. See our MTD setup guide for the registration steps.
If you are VAT-registered (mandatory above £90,000 turnover), you are already in the MTD VAT regime. For the connection between VAT registration, the £90,000 threshold, and what accounting software handles automatically, see our freelancer VAT guide.
5 Common Mistakes When Choosing Accounting Software
1. Not reconciling your bank feed monthly. Automated bank feeds pull transactions in automatically, but they do not categorise everything correctly without human review. Leaving six months of unreconciled transactions means one painful catch-up session and a higher risk of errors in your quarterly MTD submissions. Spend 20 minutes per month reviewing and confirming categorisations — the AI gets better as it learns your patterns.
2. Mixing personal and business transactions in one account. Using a personal bank account for business income and expenses makes bank feed categorisation a nightmare and risks HMRC scrutiny if your expense claims look muddled. Open a separate business bank account before you start using accounting software. The feed connects to that account only — clean separation from day one. For context on why this matters for your tax return, see our side hustle tax guide.
3. Ignoring the VAT threshold. The VAT registration threshold is £90,000 in rolling 12-month turnover. Crossing it without registering is an HMRC penalty. Your accounting software should show your rolling 12-month revenue on the dashboard — most do. Set a manual alert at £80,000 to give yourself eight weeks to prepare. See our freelancer VAT guide for what registration involves and whether voluntary registration makes sense below the threshold.
4. Continuing with manual spreadsheets above the MTD threshold. Above £50,000 income in 2026/27, spreadsheets are not MTD-compliant (bridging software aside). Many freelancers delay switching because the current system "works." The consequence is rushing to implement new software mid-year, creating a transition mess during the period HMRC is watching most closely. Migrate at the start of a new tax year — April 6, 2026 is the ideal transition point for anyone approaching the threshold.
5. Not backing up your data before switching platforms. If you migrate from FreeAgent to Xero (or vice versa), export your full transaction history, invoices, and client records before deactivating your old account. Most platforms export to CSV or Excel. Keep the export for at least six years — HMRC can request records going back six tax years in an enquiry.
How to Choose: A Decision Tree
Answer these questions in order:
- Do you bank with NatWest, Royal Bank of Scotland, or Mettle? → Yes: Use FreeAgent (free, full-featured, Self Assessment integrated). No: continue.
- Are you a sole trader or freelancer with no employees? → Yes: QuickBooks Sole Trader at £12/month or FreeAgent at £19/month. If cost is the primary concern, QuickBooks wins.
- Do you have (or plan to have) an accountant managing your books? → Yes: Use Xero — your accountant will strongly prefer it, and the shared access saves time and money on accountancy fees.
- Are you a small limited company with employees? → Xero Standard (£30/month) — payroll included, accountant ecosystem, depth for growing complexity.
- Do you want zero software cost and are willing to live with limited features? → Sage Accounting Individual Free for MTD record-keeping; add invoicing via a free tool like Wave or a one-page PDF.
For most UK freelancers who have just started their self-employment journey — particularly those who have followed the steps in our guide to starting freelancing in the UK — FreeAgent or QuickBooks is the right starting point. Both are built for non-accountants, both handle MTD ITSA, and both file your Self Assessment without requiring a separate product.
Pricing Summary (2026)
| Software | Entry Plan | Price/Month | Annual Cost | Free Trial | Affiliate / CPA |
|---|---|---|---|---|---|
| FreeAgent | Sole Trader | £19 (or £0 via NatWest/Mettle) | £228 (or £0) | 30 days | ~£30–50 CPA |
| QuickBooks | Sole Trader | £12 | £144 | 30 days | ~£20–40 CPA |
| Xero | Starter | £15 | £180 | 30 days | ~£30–50 CPA |
| Sage Individual | Free / £7 | £0 or £7 | £0 or £84 | N/A (free plan) | ~£20–30 CPA |
| Coconut | Free / £9.99 | £0 or £9.99 | £0 or £120 | Free plan | — |
Accounting software is a deductible business expense — the full monthly cost reduces your taxable profit. At a 20% income tax rate, a £19/month FreeAgent subscription costs you £15.20 in real terms. At a 40% rate, £11.40. Factor this into your cost comparison.