Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) has been talked about for years, but for many sole traders and landlords, 2026 is when it starts to feel very real. If you file a Self Assessment return and you are used to doing everything once a year often close to the deadline, MTD will change how you work.
From our perspective as accountants, this is not just another HMRC rule. It is a shift in how you keep your records, how often you report to HMRC, and how much visibility you have over your tax position during the year. The good news is that, with the right support, it can make your life easier rather than harder.
What is MTD for Self Assessment?
MTD for ITSA is HMRC’s plan to move Self Assessment onto a fully digital, more frequent reporting system. Instead of:
- Keeping paper records or basic spreadsheets, and
- Filing one Self Assessment tax return once a year,
you will be expected to:
- Keep digital records of your income and expenses, and
- Send quarterly updates to HMRC through approved software.
The aim is to reduce errors and give HMRC more up-to-date information. But for you as a business owner or landlord, it means changing habits that may have been in place for years.
Who will be affected?
MTD for Self Assessment is being phased in, mainly based on your level of income from self-employment and property. The exact thresholds and dates have shifted several times, but the direction of travel is clear: more people with business and rental income will move into the MTD regime over the coming years.
You are likely to be affected if:
- You are a sole trader with trading income above HMRC’s MTD threshold.
- You receive property income as an individual landlord.
- You have a combination of self-employment and rental income.
Even if you are not in the first wave, it is sensible to get MTD-ready now. The earlier you move onto digital records and proper systems, the smoother the eventual transition will be.
What changes for your tax return?
The biggest change is timing and format, not the underlying tax rules. You will still be taxed on your profits, and you will still have to make sure you report all your income correctly. However, instead of one big rush in January, you will have several reporting points during the year.
In practice, MTD for Self Assessment means:
- Digital record-keeping: You will need to maintain digital records of income and expenses. This usually means using cloud accounting software rather than manual spreadsheets.
- Quarterly submissions: You will send summary figures to HMRC every quarter via your software.
- An end-of-period statement: After the year end, you will finalise your figures to confirm your taxable profits.
- A final declaration: This replaces the traditional Self Assessment tax return.
If you are used to dropping off a folder or inbox full of receipts once a year, this will feel very different. However, it can also mean no more last-minute panic and fewer surprises when your tax bill arrives.
The risks of doing nothing
We see three main risks for individuals who try to ignore MTD until the last minute.
First, software confusion. There are many “MTD-compatible” products on the market, and not all are suitable for every type of business. Choosing the wrong one can leave you frustrated and still non-compliant.
Second, messy or incomplete records. If you try to bolt software onto poor record-keeping, you will simply digitise the chaos. That leads to inaccurate figures, higher tax than necessary, and potential HMRC queries.
Third, penalties and stress. Missing quarterly submissions or failing to keep proper digital records can result in penalties. Even if you avoid formal fines, you are likely to spend more time firefighting and worrying about HMRC rather than running your business.
How we support clients through MTD
As an accounting firm, we see our role as translating HMRC’s technical requirements into something practical that fits how you actually work. Our approach is always tailored, because a freelance consultant, a tradesperson and a landlord with several properties all have very different needs.
Typically, our MTD support includes:
- Assessing whether and when MTD will apply to you, based on your income and circumstances.
- Helping you choose the right software, rather than pushing a “one size fits all” solution.
- Setting up your digital records and linking bank feeds where appropriate.
- Designing a simple workflow, so you know exactly what you need to do each week or month.
- Reviewing your quarterly data before submission, to reduce errors and catch missed expenses.
- Using the more regular figures to give you better, in-year tax and cash flow advice.
For some clients, that means full, hands-on bookkeeping and quarterly submissions handled by us. For others, it means training and light-touch support, with them doing more of the day-to-day data entry and us focusing on review and planning.
Turning MTD into an advantage
While MTD is being introduced as a compliance measure, we encourage clients to see it as an opportunity to bring their finances under better control.
Quarterly updates mean you have regular, up-to-date figures for:
- How your business is performing.
- How much to set aside for tax.
- When you might need to adjust pricing, spending or investment.
Instead of waiting until months after the year end to discover a large tax bill, you can have a clear picture throughout the year. That makes conversations about tax planning more meaningful, because we are working with current numbers, not old estimates.
What you should do now
If you are unsure whether MTD for Self Assessment applies to you, or when it will, now is the time to ask rather than wait. A short review of your income sources, current record-keeping and software can show:
- Whether you are within scope for MTD in the next phase.
- How much change is actually needed to become compliant.
- Which digital tools would best suit your business or property portfolio.
From there, we can help you move step by step, without disruption and without jargon. MTD for Self Assessment will change how tax returns work in 2026 and beyond, but you do not have to navigate that change on your own.
