As a sole trader, you already know tax isn’t optional, but starting soon, how you report it will change more than it has in decades. This isn’t a tweak. It’s a structural shift in how self-employed income and property income are recorded and reported to HM Revenue & Customs.

Here’s what every UK sole trader needs to know, in plain English.

What MTD for Income Tax Actually Is.

Making Tax Digital for Income Tax (often shortened to “MTD IT”) is a new system that:

• Requires you to keep digital records of your income and expenses.
• Requires you to update HMRC quarterly.
• Requires you to use compatible software rather than handwritten paper files or spreadsheets.
• Replaces the traditional annual Self Assessment return with quarterly filings plus a final declaration at year-end.

In short: your bookkeeping and annual tax filing merge into an ongoing digital reporting cycle.

Who Must Comply; And When.

MTD for Income Tax kicks in based on your qualifying income in a tax year. That’s defined as the gross income from self-employment and property before deducting expenses.

Here’s the phased timeline:

The £20,000 threshold is planned but may depend on the legislation timing.

Example: If your self-employment and/or rental income totalled more than £50,000 between 6 April 2024 and 5 April 2025, you must comply from 6 April 2026.

You don’t need to be VAT-registered to fall within MTD for Income Tax compliance; this is a separate regime.

What Counts as Qualifying Income?

Your qualifying income for MTD purposes is:

• Gross turnover from self-employment
• Gross rental income from property

It does not include:

• PAYE salary
• Dividends
• Savings or investment income
• Partnership income reported elsewhere

In other words, the figures that count are about what you earn in business and property, not what you pay in tax or make in other income streams.

What You Must Do Under MTD IT

Once you’re in scope, you’ll need to do three core things:

1. Keep Digital Records

You must use software compatible with Making Tax Digital to:

• Create and store records of income and expenses
• Edit and correct those records if needed

Importantly, if you choose to use multiple systems (e.g., separate bookkeeping software and a separate submission tool), they must be digitally linked; meaning HMRC sees the records as digital records, not screenshots or pasted text.

Note: You can use spreadsheets, but only if they form part of a qualifying digitally linked system. Copy-and-paste or manual transcription won’t count.

2. Send Quarterly Updates

Instead of one annual Self Assessment, you must send:

• Four quarterly updates
  — These show your income and expenses for each period
• One final declaration
  — This finalises your year’s figures and replaces the traditional annual return ◆

Quarterly filing deadlines are aligned with HMRC’s calendar; the first one for 2026/27 will be due in August 2026.

3. Submit Your Year-End Final Declaration

You still pay your tax by the usual deadlines, but this happens through your software using the final year-end declaration, not the old paper or online Self Assessment form.

Can you start early?

Yes, and HMRC actively encourages it.

You can voluntarily sign up early, even if you’re not yet over the threshold. Many sole traders are doing this simply to:

• Get used to the process
• Spread the change over time
• Avoid a rushed setup in 2026 or 2027

Early adoption isn’t mandatory, but it’s often sensible.

Who Is Exempt or Eligible for Exemptions?

There are exemptions, including:

• Digital exclusion, where it’s not reasonable for you to use digital software
• Very low qualifying income, if less than £20,000
• Certain trustee or representative circumstances (e.g., filing on behalf of someone who has died)

If you think you qualify, you must apply to HMRC with evidence. You won’t automatically be exempt unless it’s one of the statutory categories.

What happens if you ignore it?

MTD comes with a points-based penalty system. Miss submissions, rack up points, and penalties will follow. This isn’t something you can quietly fix later. That’s why preparation matters.

What Software Actually Means Under MTD IT.

The software you use must be capable of:

• Creating digital records
• Linking records digitally
• Submitting quarterly updates
• Submitting your final declaration

HMRC provides a list of compatible products, and many accountants already use these on behalf of clients. Using just a spreadsheet saved as a file won’t cut it unless it is linked “digitally” through approved tools.

Why This Matters

This isn’t about reducing your tax; it’s about transparency and routine reporting.

For many sole traders:

• You’ll spread your tax reporting effort across the year
• You’ll have a clearer view of your finances earlier
• You won’t be scrambling every January just to make sense of it all

But if you wait until April 2026 and try to implement this on Day 1, it will feel overwhelming, because you’re not just filing differently; you’re keeping accounts differently.

The first year causes confusion (so let’s clear it up)

If you join MTD in April 2026, you’ll still submit your 2025/26 Self Assessment return by 31 January 2027, because that year wasn’t fully reported under MTD. After that, everything moves into the new system. This transition year catches a lot of people out, but it’s expected and accounted for.

Final Reality Check

MTD for Income Tax is rolling out, and the roadmap and thresholds are set by HMRC:

• 6 April 2026: Sole traders and landlords with qualifying income over £50,000 begin MTD ITSA.
• 6 April 2027: Qualifying income over £30,000 becomes the trigger.
• Future: The government intends to lower the threshold to £20,000.

Being ready isn’t optional, but being prepared can make this work for your business, not against it.

A practical checklist for sole traders

If you’re anywhere near the threshold, this is what you should be doing now:

• ☐ Confirm your qualifying income
• ☐ Speak to your accountant or bookkeeper
• ☐ Decide how you’ll keep digital records
• ☐ Choose and test compliant software
• ☐ Register for MTD before your start date
• ☐ Build quarterly reporting into your routine

Note: This blog is up to date as of the 26th of January 2026.