HMRC Automatic Making Tax Digital Sign Up For Landlords & Sole Traders

But automatic sign-up does not mean you are fully MTD-ready. You still need to check that HMRC has the correct income sources, choose compatible software, bring your digital records up to date from 6 April 2026, and submit any quarterly updates that are already due. In short, an HMRC letter is the start of the process, not the end.

This guide explains who MTD for Income Tax applies to, how qualifying income is calculated for landlords, what automatic sign-up means in practice, which deadlines matter, and what to do if HMRC contacts you.

Because a big chunk of the first mandatory group just didn't turn up.

MTD for Income Tax became compulsory on 06/04/2026 for landlords and sole traders over £50,000. By mid-August, HMRC said 570,000-odd people had joined, and 436,000 had sent a first quarterly update. Compare that to HMRC's own estimate of who should be in the system, and there's a gap of around 290,000 people who were legally required to be there and weren't.

Rather than chase 290,000 people one by one, HMRC is just registering them itself. Craig Ogilvie, HMRC's director of Making Tax Digital, has been pushing people to sign up MTD on their own first instead, so they keep control of their own details rather than wait around to be enrolled.

That control point is the real issue here. HMRC only works from what it already has on file, and it says as much in its own guidance, that this might not reflect anything you've changed since your last return. Sold a flat in May 2026? Bought two more in July? Moved from owning solo to joint ownership with your spouse? None of it's on record. What actually gets registered is a snapshot of your portfolio from a return filed up to 17 months ago, whether or not it still looks anything like your actual affairs.

Three things have to line up for the September sign up to catch you. Registered for Self-Assessment, income from self-employment or property (or both), and qualifying income over £50,000 for 2024 to 2025.

Working Out Qualifying Income

It's total income from self-employment and property, before expenses, off the return you filed the year before.

Here's where landlords get caught out: it's gross rent, not profit. Doesn't matter what you spent on the mortgage, the letting agent, insurance, repairs, or how the finance cost restriction hit your actual tax bill. None of that touches this figure.

Some things sit outside it entirely. PAYE income, your share of partnership profit as an individual partner, dividends (even from your own company), State Pension, private pensions, REIT and PAIF income. None of it counts.

A handful of situations we see constantly:

One deferral worth knowing. Anyone who completes the residence pages (SA109) got an extra year, pushed back from the April 2026 start, because of the non-domicile regime changes. If SA109 applied to your 2024 to 2025 return, or you think it will for 2025 to 2026 or 2026 to 2027, don't just accept an HMRC letter at face value. Check the exemption guidance first.

Where the Automatic MTD Sign Up Gets It Wrong

The MTD  sign up uses old data, so the same mistakes keep happening.

Stopped letting or stopped self-employment before 06/04/2026 but never told HMRC? You'll still get signed up. Had your 2024 to 2025 return corrected down since, so you're actually under £50,000 now? Still signed up. Moved everything into a company or trust? Same. Digitally excluded but never applied for the exemption? You'll get the letter too.

What you do next depends on timing. If everything stopped by 05/04/2026, you don't need MTD for 2026 to 2027, just say so when you confirm your income sources. If it stopped after 06/04/2026, you still owe one last quarterly update up to the day you stopped, plus the full tax return for that year.

The MTD threshold drops twice more. Earn over £30,000 in 2025 to 2026, and you're in from 06/04/2027. Over £20,000 in 2026 to 2027, and it's 06/04/2028 for you. Partnerships get pulled into this eventually too, HMRC just hasn't said when.

Two other changes hit in April 2027, and they make the current setup look almost forgiving. Miss a quarterly update after that point and it's a penalty point, starting with the 2027 to 2028 tax year. The whole new penalty system also stops being an MTD thing and applies to anyone filing Self-Assessment, and if you're exempt from MTD your points threshold drops from four down to two.

So, if you're a landlord bringing in £26,000 gross right now, you've got one year left outside all this. After that, you're in whether you like it or not.

MTD does not change how much tax you owe. What changes is how often you need to keep records and report your income.

Record-Keeping Becomes Year-Round

Landlords will need to keep digital records throughout the year and use compatible software for quarterly updates. In practice, leaving receipts and expenses until January will no longer be a practical option.

MTD is Based on Gross Income, Not Profit

This is especially important for landlords with large mortgages.

Two landlords could each receive £54,000 in rent, but one might make £43,000 profit while the other makes only £14,000 after interest and expenses.

Both are still within MTD because the test looks at gross qualifying income, not the profit left in your pocket.

The same applies if you have more than one source of income.

For example:

£34,000 rental income + £19,000 consultancy income = £53,000 qualifying income.

Neither source crosses the threshold alone, but together they do.

Late Payments Could Become Costly

Under the new MTD penalty regime, missing a tax payment deadline can quickly add to the amount you owe.

For example, an £18,000 tax bill paid 40 days late in 2026/27 could result in around £1,080 in fixed late-payment penalties, before any interest is added.

For property investors, the message is clear: MTD leaves less room for last-minute bookkeeping and missed deadlines. Keeping accurate digital records throughout the year will be increasingly important for staying compliant and avoiding unnecessary costs.

If HMRC has enrolled you for Making Tax Digital for Income Tax, do not ignore the notification. Work through the following steps as soon as possible:

• Sign in to HMRC online services using your Self-Assessment details. If you use an accountant, they will normally access the service through their agent services account
• Check the income sources HMRC has recorded against your 2024/25 tax return, including UK and overseas property income
• Add any new income sources, such as a new rental property or self-employment business
• Tell HMRC about any income source that has stopped
• Check whether you qualify for an exemption before setting up software
• Choose compatible MTD software and make sure it supports all your relevant income sources and accounting periods
• Authorise the software to connect with HMRC
• Bring your digital records up to date from the start of the tax year
• Submit any overdue quarterly updates as soon as possible
• Keep track of your next deadlines, including 7 November 2026 and 7 February 2027

Your HMRC account should show which updates are outstanding and what you need to submit next.

If you believe HMRC has enrolled you incorrectly, contact HMRC Self-Assessment. Your accountant can also raise the issue through the appropriate agent channel.

Yes, but HMRC is giving taxpayers some breathing room in the first year.

For 2026/27, HMRC will not issue penalty points for late quarterly updates. However, you must still keep digital records and submit all quarterly updates before you can file your tax return. A late tax return can still result in a penalty point.

From 2027/28 onwards, missing a quarterly update can also earn you one penalty point. Once you reach four points, HMRC charges a £200 penalty, with another £200 for each further missed deadline.

If you stay below four points, each point normally expires after 24 months. Once you reach the threshold, you must submit everything on time for 12 months and bring all outstanding submissions from the previous 24 months up to date before the points are cleared.

The first year offers some protection, but it is not a year to ignore MTD. Use 2026/27 to get your digital records, software and quarterly reporting routine working properly before the full penalty system takes effect.

Yes, but only in specific circumstances.

You may be exempt if it is not reasonable for you to use compatible software to keep digital records, submit quarterly updates or file your return. This is commonly referred to as digital exclusion.

An exemption from MTD does not remove your obligation to report taxable income and gains through Self-Assessment.

You may also be able to leave MTD if your qualifying income stays below the relevant threshold for three consecutive tax years.

The key point is that exemption is not automatic. You need to meet HMRC’s conditions before relying on it.