MTD Qualifying Income Thresholds Explained (2026)

MTD Qualifying Income: What It Means and Which Threshold Applies to You

If you're a sole trader or landlord trying to work out whether Making Tax Digital for Income Tax applies to you, the phrase you'll keep bumping into is "MTD qualifying income." It sounds like jargon, but it's actually a simple idea with a slightly fiddly calculation behind it. This guide explains exactly what qualifying income is, how HMRC works it out, and which of the phased thresholds applies to your situation.

We'll also look at what happens once you're in scope, and how a tool built around a "you're in control" Prepare mode can make the whole thing far less stressful than it sounds.

What is MTD qualifying income?

Your MTD qualifying income is the total gross income you receive from self-employment and property in a tax year, before you deduct any expenses or allowances. It is not your profit, and it is not your taxable income after reliefs - it's the turnover figure, combined across all your self-employed businesses and all your property income, that HMRC uses to decide whether you must join Making Tax Digital for Income Tax.

Two things trip people up here:

  • It's gross, not net. A sole trader with £45,000 of turnover and £30,000 of expenses has a qualifying income of £45,000, not £15,000 profit.
  • It's combined across income sources. If you run a self-employed business and also let out a flat, HMRC adds the two income totals together to test against the threshold - it isn't judged separately per business.

This matters because plenty of people assume they're safely under a threshold when they look only at their self-employment turnover, forgetting that rental income from a buy-to-let or a room let under a formal letting arrangement counts too.

The MTD qualifying income thresholds

Making Tax Digital for Income Tax is being introduced in phases, based on qualifying income bands. The three thresholds you'll see referenced are:

  • £50,000 - the first phase threshold, testing 2024/25 qualifying income and bringing affected taxpayers into MTD for Income Tax from 6 April 2026
  • £30,000 - the second phase threshold, testing 2025/26 qualifying income and applying from 6 April 2027
  • £20,000 - the threshold expected to bring in a further wave of smaller businesses and landlords, testing 2026/27 qualifying income and applying from 6 April 2028

Each threshold has its own start date for when affected taxpayers must begin quarterly digital record-keeping and updates under MTD for Income Tax. Because these dates and figures are set by HMRC and can still be adjusted, it's always worth checking the current position with HMRC or your accountant before assuming which year applies to you.

The general shape, though, is consistent with how MTD for VAT was rolled out: start with the highest-income group, prove the system works, then widen the net downward in later years. If your qualifying income sits comfortably above £50,000, you should assume you're in an early phase. If you're closer to £20,000-£30,000, you have a bit more runway, but it's coming.

How HMRC works out which year you're tested

HMRC doesn't look at your income for the current tax year to decide if you're in scope for that same year - it looks backwards. Broadly, your qualifying income for an earlier tax year determines whether you must comply from a later one. This lag is deliberate: it gives you and HMRC time to know the outcome before your MTD obligations actually start, rather than discovering mid-year that you've crossed a line.

In practice this means two things. First, a good or bad trading year in the past can determine your obligations well before you feel the effect of a slower current year. Second, if your income fluctuates around a threshold, you could move in and out of scope from one year to the next depending on where your qualifying income landed in the relevant assessment year - so it's worth tracking your gross income proactively rather than finding out at the last minute.

What counts towards qualifying income (and what doesn't)

Qualifying income generally includes:

  • Gross turnover from any sole trader business you run
  • Gross income from UK property you let out
  • Combined totals where you have more than one self-employment or more than one property source

It generally does not include income taxed under other regimes entirely - for example, employment income taxed through PAYE, or dividends and savings income, which sit outside the self-employment and property income tests that MTD for Income Tax is built around. If your income is a mix of employed and self-employed work, only the self-employed and property portions count towards the qualifying income test.

If you're unsure whether a specific income stream counts, this is exactly the kind of question worth putting to an accountant, since misclassifying income either way can mean you miss a genuine obligation or start filing quarterly updates a year before you strictly need to.

What happens once you're over the threshold

Once your qualifying income places you in scope for a given phase, you'll generally need to:

  • Keep digital records of your business and property income and expenses
  • Send quarterly updates to HMRC through MTD-compatible software
  • Submit an End of Year declaration to finalise your tax position

This is a bigger shift in habit than MTD for VAT was for most businesses, because it touches income tax record-keeping rather than a quarterly VAT figure. For a full walkthrough of the quarterly cycle and deadlines, see our guide on MTD quarterly updates, and if you want the wider picture first, start with what Making Tax Digital actually is.

Why "in scope" doesn't have to mean "signed over to HMRC"

A lot of the anxiety around MTD for Income Tax comes from a misunderstanding: people assume that once they're required to keep digital records and send quarterly updates, their books are somehow permanently connected to HMRC, streaming data automatically in the background. That isn't how it has to work, and it isn't how WDI Billing works.

WDI Billing is built around three modes - Records, Prepare, and File - with Prepare as the default. In Records mode, you keep clean digital books, nothing more. In Prepare mode, your quarterly update is compiled and sat ready to review - but nothing goes to HMRC until you press file. Nothing streams to HMRC automatically. You stay in control of what's submitted and when, right up to the point you choose to send it. File mode exists for the moment you're genuinely ready to submit, and it's entirely user-triggered.

That distinction matters a great deal once you're pulled into MTD by crossing a qualifying income threshold you didn't necessarily choose. You can meet the legal requirement to keep digital records and file quarterly, without handing over continuous, automatic visibility into your business.

Keeping track of your qualifying income as you go

Because qualifying income is a gross figure and the assessment looks back over a defined period, the safest habit is to track your gross self-employment and property income continuously through the year rather than reconstructing it at the last minute. Good bookkeeping software will show you a running total, so you always know roughly where you sit relative to £50,000, £30,000 or £20,000 well before HMRC's assessment window closes.

WDI Billing's bookkeeping software keeps your records current in Records mode, and if you're a sole trader specifically working out your MTD position, our dedicated sole trader accounting software page and our Making Tax Digital for sole traders guide walk through the practical side of getting compliant without losing control of your data.

If you're near a threshold, don't wait for the deadline

If your qualifying income is close to £50,000, £30,000 or £20,000 , it's worth getting your digital record-keeping in order well before your obligation date arrives, rather than scrambling once you know for certain you're in scope. Clean, gross-income-visible books from day one make the eventual quarterly update process far less of a shock - and if you end up just under the line this year, you've lost nothing by being ready early.

Get ready for MTD for Income Tax with WDI Billing

Whether you're already over a qualifying income threshold or just want to see where you stand, WDI Billing gives you clean digital records today and a Prepare-mode workflow for the day quarterly updates become compulsory - with nothing sent to HMRC until you decide to file. Explore our Making Tax Digital software or see pricing and start a free trial to keep your books ready, and yours.