Best Tax Management Software for Sole Traders
Tax management is the part of being self-employed that most people dread. It is not the work itself that is the problem — it is the anxiety of not knowing whether you are doing it right, the fear of missing a deadline, and the sinking feeling when a number does not look quite right.
Good tax management software should remove that anxiety. It should tell you what you owe, when you owe it, and handle the filing for you. In 2026, with Making Tax Digital now live for sole traders earning over £50,000, the software also needs to submit quarterly updates to HMRC on your behalf.
We have tested the main options and compared them from the perspective of a UK sole trader who wants to manage their tax obligations without hiring an accountant or losing weekends to spreadsheets.
What Tax Management Software Should Do
Tax management for sole traders covers several distinct tasks. Not all software handles all of them, and understanding what you actually need helps narrow the field.
Real-Time Tax Estimates
The most valuable feature any tax software can offer is a running estimate of what you owe. This means calculating your Income Tax liability, Class 2 and Class 4 National Insurance, and payments on account based on your year-to-date income and expenses. The estimate should update automatically as new transactions are categorised.
Without this, you are guessing. And guessing usually means either overpaying (putting aside too much) or underpaying (and facing a bill you cannot afford in January).
Self Assessment Filing
Filing your SA100 tax return directly from your software saves you from the HMRC website, which — while functional — requires you to re-enter figures you have already calculated. Good software pre-populates your return from your bookkeeping data and submits it electronically.
MTD Quarterly Submissions
Making Tax Digital requires quarterly updates to HMRC summarising your income and expenses. Your software needs to be HMRC-recognised for MTD and capable of submitting these updates directly. Our Making Tax Digital guide explains the requirements in detail.
Multi-Schedule Support
If you have income from multiple sources — self-employment plus rental income, or self-employment plus employment — your tax return requires multiple schedules. Software that only handles the self-employment pages (SA103) will not work for you.
Deadline Tracking
Self Assessment has multiple deadlines: registration, the filing deadline, and two payments on account. MTD adds four quarterly submission deadlines. Missing any of these incurs penalties under HMRC's points-based system. Your software should track all of them and remind you in good time.
The Best Tax Management Software Compared
1. Accounted — Best All-in-One Tax Management
Price: From £12/month | Self Assessment: Yes | MTD: Yes | Schedules: 11 of 13
Accounted combines year-round bookkeeping with tax management, which means your tax figures are always current because they are built from live bookkeeping data. Penny, the AI bookkeeper, categorises your transactions throughout the year, and your tax estimate updates in real time.
This approach means that by the time you need to file, the work is already done. Your Self Assessment return is pre-populated from a year of automated bookkeeping. You review the figures, confirm, and submit — directly to HMRC from the platform.
The MTD quarterly submissions work the same way. Because your books are up to date, generating a quarterly update is a matter of confirming what Penny has already prepared.
Accounted supports 11 of 13 Self Assessment schedules, covering self-employment, rental income, capital gains, employment income, dividends, interest, foreign income, and more. This is significantly broader than most competitors aimed at sole traders.
Strengths: Live tax estimates, automated bookkeeping feeds into tax, broad SA coverage, MTD-native Weaknesses: UK only, no invoicing yet, newer platform
See our full pricing or explore the features in detail.
2. GoSimpleTax — Best Dedicated Filing Tool
Price: From £58.80/year | Self Assessment: Yes | MTD: Limited | Schedules: All 13
GoSimpleTax does one thing exceptionally well: it helps you fill in your Self Assessment tax return and submit it to HMRC. The interface walks you through the return step by step, with clear prompts and helpful explanations at each stage.
Where GoSimpleTax falls short for 2026 and beyond is that it is primarily a filing tool, not a year-round tax management platform. You need to arrive at your figures before you start — GoSimpleTax does not do your bookkeeping or track your transactions throughout the year. You calculate your totals elsewhere and enter them into GoSimpleTax for filing.
The MTD support is also more limited. GoSimpleTax can handle quarterly submissions, but because it does not maintain ongoing bookkeeping records, preparing those submissions requires more manual effort.
Strengths: Covers all 13 SA schedules, clear filing interface, affordable annual pricing Weaknesses: Not a year-round solution, manual data entry, limited MTD workflow
We compare these two directly in our Accounted vs GoSimpleTax review.
3. FreeAgent — Best Free Tax Management
Price: £14.50/month (free with NatWest/RBS) | Self Assessment: Yes | MTD: Yes | Schedules: Most
FreeAgent's tax management features are strong. The tax timeline gives you a visual overview of what you owe, when payments are due, and how much you should be setting aside. Self Assessment filing is built in, and the MTD compliance is solid.
If you bank with NatWest, RBS, or Ulster Bank, FreeAgent is free. For a free product, the tax management capabilities are remarkable. The main limitation is that the tax calculation engine, while good, handles fewer edge cases than Accounted or GoSimpleTax.
Strengths: Free with NatWest, good tax timeline, integrated bookkeeping and tax Weaknesses: Fewer SA schedules, manual categorisation, some complexity gaps
4. Xero — Best With an Accountant
Price: £15–£47/month | Self Assessment: Via accountant | MTD: Yes | Schedules: Via accountant
Xero itself does not file Self Assessment returns for sole traders. That is typically handled by your accountant through the Xero Tax module. For tax management, Xero's strength is that it keeps your books in order so your accountant can file efficiently.
If you work with an accountant and they use Xero, this is a good option. If you want to manage your own tax without an accountant, Xero alone is not sufficient.
Strengths: Excellent accountant collaboration, reliable bookkeeping, strong ecosystem Weaknesses: No direct SA filing for sole traders, requires accountant for tax filing, expensive
5. TaxScouts — Best Hybrid Approach
Price: From £169/year | Self Assessment: Yes (done by an accountant) | MTD: Via accountant | Schedules: All
TaxScouts is not software in the traditional sense — it is a service that pairs you with an accredited accountant who files your return for you. You upload your documents, the accountant reviews everything, and they file on your behalf.
This works well if you want human oversight and do not trust yourself to get the numbers right. The limitation is that it is a once-a-year service. You do not get year-round tax estimates or ongoing bookkeeping. And at £169+ per return, it is more expensive than software-only options.
Strengths: Human accountant review, covers all scenarios, peace of mind Weaknesses: Not year-round, no ongoing bookkeeping, more expensive than software
We explore this comparison in our Accounted vs TaxScouts review.
Year-Round Tax Management vs Annual Filing
This is the most important distinction to understand. Some platforms — GoSimpleTax, TaxScouts — are primarily about the annual filing event. Others — Accounted, FreeAgent, Xero — provide year-round bookkeeping that feeds into tax filing.
With MTD now requiring quarterly submissions, the year-round approach has a clear advantage. If your bookkeeping is up to date throughout the year, quarterly submissions are straightforward. If you only engage with your finances once a year, MTD creates four additional deadlines that require significant effort.
The anxiety argument is equally important. If your software tells you every day what your estimated tax bill is, you can budget for it. If you only find out in January, the number is often a shock — and the payment is due within weeks.
How to Choose
Choose Accounted if you want your tax managed automatically throughout the year. Penny does the bookkeeping, calculates your tax, and prepares your return. You just review and submit. Try it free.
Choose GoSimpleTax if you already have a bookkeeping system (even a spreadsheet) and just need a tool to file your return accurately and affordably.
Choose FreeAgent if you bank with NatWest or RBS and want free, integrated bookkeeping and tax management.
Choose Xero if you work with an accountant who handles your tax filing and you need reliable bookkeeping software they can access.
Choose TaxScouts if you want a human accountant to handle everything and are happy to pay for the peace of mind.
For a broader comparison of accounting platforms, see our best bookkeeping software guide. And if Making Tax Digital is your primary concern, our complete MTD guide covers everything you need to know about compliance, deadlines, and penalties.
The right tax management software pays for itself by preventing penalties, catching deductions you would miss, and removing the January panic. Whatever you choose, start using it now — not in December when it is too late to reconstruct the year.
Useful Resources
See how Accounted compares to Xero, Sage, QuickBooks and more — and why sole traders are switching. See the full comparison →
Editorial & Research
The Accounted editorial team covers software comparisons, technology, and the tools UK sole traders need to run their businesses efficiently. All software comparisons are based on independent research and publicly available pricing.
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