Making Tax Digital (MTD): What Every Sole Trader and Partner Needs to Know in 2026
- Jake Grose
- Mar 9
- 5 min read
If you run your own business as a sole trader or operate as part of a partnership, the way you report your income to HMRC is changing — and significantly. Making Tax Digital (MTD) is the UK government's most ambitious tax reform in decades, and it is set to affect millions of self-employed individuals across England, Scotland, Wales and Northern Ireland.
In this guide, we break down exactly what MTD means for you, when it applies, what you'll need to do differently, and — crucially — why working with a qualified accountant or bookkeeper has never been more important.
What Is Making Tax Digital?
Making Tax Digital is a HMRC initiative designed to modernise the UK tax system by moving record-keeping and tax reporting online. Instead of filing a single annual Self Assessment tax return, affected taxpayers will be required to maintain digital records and submit quarterly updates to HMRC using compatible software.
MTD has already been rolled out for VAT-registered businesses (MTD for VAT). The next major phase — MTD for Income Tax Self Assessment (MTD for ITSA) — directly affects sole traders and partners, and it is rolling out in stages from April 2026.
MTD for Income Tax: Who Is Affected and When?
HMRC is phasing in MTD for ITSA based on income thresholds. Here is the current rollout schedule:
• April 2026: Sole traders and partners with gross income over £50,000 must comply.
• April 2027: Those with gross income over £30,000 must comply.
• April 2028: Those with gross income over £20,000 must comply (subject to confirmation).
If you are a sole trader with income from self-employment, a landlord with rental income, or a member of a trading partnership, you will fall within the scope of MTD for ITSA once your qualifying income exceeds the relevant threshold.
What Will Change Under MTD for ITSA?
1. Digital Record-Keeping Is Now Mandatory
You will no longer be able to keep records in a spreadsheet, a paper ledger, or a shoebox of receipts. HMRC requires you to use MTD-compatible software to record all income and expenses. This means transitioning to a cloud-based accounting solution such as QuickBooks, Xero, FreeAgent, or another HMRC-approved platform.
2. Quarterly Updates Replace the Annual Tax Return
Rather than filing one Self Assessment return per year, you will need to submit four quarterly updates to HMRC. These cover the following periods:
• 6 April to 5 July
• 6 July to 5 October
• 6 October to 5 January
• 6 January to 5 April
Each quarterly update is a summary of your business income and expenses — not a tax payment. However, you will also need to submit an End of Period Statement (EOPS) and a Final Declaration (which replaces the traditional Self Assessment return) after the tax year ends.
3. Penalties for Non-Compliance
HMRC is introducing a new points-based penalty system for late submissions under MTD for ITSA. Missing a quarterly deadline accumulates a penalty point; once a threshold is reached, a financial penalty follows. This means consistency in submitting your updates on time is essential — there is no longer a single annual deadline to manage.
How Will This Affect Sole Traders Specifically?
As a sole trader, you are accustomed to managing your business finances largely on your own, perhaps with an annual visit to your accountant come January. MTD for ITSA fundamentally changes this rhythm. You will need to:
• Adopt MTD-compatible bookkeeping software immediately
• Keep your records up to date throughout the year, not just at year-end
• Submit four quarterly updates in addition to your final year-end declaration
• Understand and categorise your income and expenses correctly to avoid errors
• Monitor your income level each year to know when you become liable
For many self-employed people, this represents a significant increase in administrative burden. The good news is that with the right support, the transition can be smooth — and can actually give you better visibility of your finances year-round.
What About Partnerships?
MTD for ITSA will also apply to general partnerships, though the exact rules and timeline are still being finalised by HMRC. What is clear is that each individual partner will need to comply with MTD for ITSA based on their own share of partnership income, alongside any other self-employment or property income they have. Partnerships should begin preparing now by reviewing their current record-keeping practices and discussing the changes with their accountant.
Why MTD Makes a Qualified Accountant or Bookkeeper Essential
With four reporting deadlines per year, mandatory digital software, and a brand-new penalty regime, the stakes for getting things wrong have never been higher. Here is why partnering with a professional accountant or bookkeeper is no longer just a convenience — it is a sound business investment.
Expert Setup and Software Selection
Choosing and configuring the right MTD-compatible accounting software for your specific business is not straightforward. A professional accountant will assess your needs and set up the software correctly from day one, ensuring your chart of accounts, categories, and integrations are optimised for accuracy and compliance.
Year-Round Bookkeeping Support
A bookkeeper can maintain your digital records on an ongoing basis, ensuring that every transaction is recorded accurately and on time. This removes the stress of quarterly deadlines and dramatically reduces the risk of errors that could trigger HMRC enquiries.
Accurate Quarterly Updates and Tax Efficiency
Each quarterly submission is an opportunity to review your financial position. An experienced accountant will not only ensure your submissions are compliant — they will also identify opportunities to reduce your tax liability through allowable expenses, capital allowances, and legitimate reliefs that you might otherwise miss.
Protection Against Penalties
Under the new points-based penalty system, missing even one quarterly submission starts accumulating points against you. A professional adviser will manage your submission calendar, ensure nothing is missed, and act on your behalf if HMRC ever raises a query or opens an investigation.
Strategic Business Advice
Because MTD produces real-time financial data, your accountant can use those quarterly figures to give you genuinely up-to-date business advice — on cash flow, profitability, growth planning, and tax planning. Rather than looking back at last year's numbers in January, you will have a clear, current picture of your business health throughout the year.
Action Steps: What You Should Do Right Now
• Check your income threshold: If your gross self-employment or property income is above £50,000, MTD for ITSA applies to you from April 2026.
• Review your record-keeping: Are you currently using spreadsheets or paper records? Start planning your move to digital accounting software.
• Speak to an accountant or bookkeeper: Do not leave this until the last minute. The earlier you get professional advice, the smoother your transition will be.
• Plan ahead for quarterly deadlines: Build a calendar of your MTD submission dates and ensure you have the processes in place to meet them.
Need Help Getting MTD-Ready?
Our team of qualified accountants and bookkeepers specialises in helping sole traders and partnerships navigate Making Tax Digital with confidence. From choosing the right accounting software to managing your quarterly submissions and optimising your tax position — we are here to take the burden off your shoulders.
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