If your rental and self-employed income together top £30,000, you're probably in the next wave of Making Tax Digital for Income Tax, starting 6 April 2027. The catch most landlords miss is the year it's judged on: HMRC looks at your 2025/26 tax return, the one you'll file by 31 January 2027. So the income that decides this is being earned right now.
The first MTD wave (over £50,000) already began on 6 April 2026. The £30,000 wave is next. This guide tells you exactly how to work out whether you're caught, what "qualifying income" actually means for a landlord, and what changes when you are.
It's written for UK landlords and anyone with mixed rental and self-employed income. Every rule and figure below is taken from HMRC's own guidance, cited at the end.
Who's caught by the £30,000 MTD threshold from April 2027? {#whos-caught}
You're caught if you're a sole trader or landlord registered for Self Assessment whose qualifying income from self-employment and property is more than £30,000, and HMRC sees that on your 2025/26 return. Your start date is then 6 April 2027.
Making Tax Digital for Income Tax (MTD for IT) is being phased in by income band:
| Qualifying income | You must use MTD from | Judged on your return for |
|---|---|---|
| Over £50,000 | 6 April 2026 | 2024/25 |
| Over £30,000 | 6 April 2027 | 2025/26 |
| Over £20,000 | 6 April 2028 | 2026/27 |
So the £30,000 band is the second wave. If your 2025/26 self-employment and property income comes in above £30,000, you'll need to follow MTD rules for the 2027/28 tax year onwards.
One important softener from HMRC: you don't start using MTD until after you've submitted the Self Assessment return that puts you over the threshold. You can't be forced in before that return is filed.
What counts as "qualifying income" for a landlord? {#qualifying-income}
This is where landlords most often get the wrong answer, so it's worth being precise.
Qualifying income is the total gross income you get in a tax year from self-employment and property combined. "Gross" means before you deduct any expenses. In HMRC's words, it's your "income before you deduct expenses, also called your turnover". For a landlord, that's your rent received, not your profit after mortgage interest, repairs and letting fees.
It's also a combined figure. HMRC adds your self-employment turnover and your property income together, then compares the total against the threshold. A landlord with £22,000 of rent and a £12,000 side trade has £34,000 of qualifying income, even though neither source alone clears £30,000.
What does not count toward qualifying income, per HMRC, is:
- Employment income taxed through PAYE
- Dividends, including from your own company
- The State Pension
- Private pensions
Those don't push you over the line. But here's the nuance worth holding onto: they don't disappear. They're still reported, through your final declaration at the end of the year. They just don't count when HMRC works out whether you're in MTD.
How is rental income grouped?
All your UK property is treated as one property business. You don't get a separate threshold per flat or per tenant. Add up the gross rent from every UK let and that's your UK property figure.
UK property and overseas property are treated as separate businesses for MTD reporting, even though both count toward your single qualifying-income total. If you have a UK buy-to-let and a holiday flat abroad, the rent from both counts toward the £30,000 test, but you'll keep records and report them as two distinct businesses once you're in.
If you'd like a plain-English overview of how rental income is taxed alongside this, our guide for landlords is a good starting point.
Which tax year decides whether I'm caught? {#which-year}
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The £30,000 wave is judged on your 2025/26 Self Assessment return, which is due by 31 January 2027.
This is the part that catches people out. The threshold isn't tested on the year MTD starts. It's tested on the return you file the year before. So the rent and self-employed turnover landing in your accounts between 6 April 2025 and 5 April 2026 is what decides your fate for April 2027.
HMRC's process is straightforward: it reviews your submitted return, and if your qualifying income is over £30,000, it'll write to tell you that you must start using MTD from 6 April 2027.
In practice, the mistake we see most is a landlord assuming a quiet year keeps them out, without checking the gross figure across all their income sources combined.
A worked example: am I over the line? {#worked-example}
Illustrative example. Meet Priya, a UK landlord who also does some freelance graphic design.
For the 2025/26 tax year, her gross income is:
| Source | Gross income (2025/26) | Counts toward threshold? |
|---|---|---|
| Rent from two UK flats | £19,200 | Yes |
| Freelance design turnover | £13,500 | Yes |
| Part-time employment (PAYE) | £18,000 | No |
| Dividends from her own company | £2,000 | No |
| Qualifying income total | £32,700 |
Priya's qualifying income is £19,200 + £13,500 = £32,700. That's over £30,000, so she's caught by the £30,000 wave.
Her £18,000 salary and £2,000 of dividends don't count toward the test, even though together they're worth more than her rent. So she'd be forgiven for thinking she's nowhere near. But the combined gross of her property and freelance income is what matters, and that tips her over.
Because this shows on her 2025/26 return (filed by 31 January 2027), Priya must start following MTD rules from 6 April 2027.
Now compare Tom. He has a single UK flat bringing in £14,000 gross rent and no other self-employed or property income. His qualifying income is £14,000, well under £30,000. He's not caught by the April 2027 wave, though he should keep an eye on the £20,000 wave from April 2028, judged on the 2026/27 return.
What actually changes when I'm in MTD? {#what-changes}
Three things, and none of them is "four tax returns a year", which is the myth we spend the most time correcting.
1. You keep digital records. Income and expenses for your self-employment and property have to be recorded digitally, using software that's compatible with MTD for Income Tax. Paper ledgers and a shoebox of receipts won't meet the rules. If you prefer spreadsheets, that's allowed, but you'll need bridging software to connect the spreadsheet to HMRC, because manual copy-paste or retyping between programs isn't permitted. The data has to flow through a digital link.
2. You send quarterly updates. Four times a year, your software sends HMRC a running summary of your income and expenses. These are not mini tax returns. As HMRC puts it, each update covers "from the start of the tax year to the end of the update period, not just the previous three months". They're cumulative, year-to-date totals your software works out for you to check. If you got an earlier figure wrong, the next update simply corrects it, no need to resend.
3. You submit a final declaration. After the fourth quarter, you make adjustments, claim your reliefs and allowances, add any other income (your salary, dividends, pension), and submit. This final declaration replaces the Self Assessment return and is due by 31 January after the tax year ends, the same date you're used to. This is where the actual tax reliefs are claimed, not in the quarterly updates.
So the rhythm changes, but the once-a-year reckoning where reliefs are claimed and tax is calculated stays in the same place. If you currently use our Self Assessment service, the year-end declaration is the natural continuation of that work.
What are the MTD quarterly update deadlines? {#deadlines}
The standard quarterly periods and their deadlines are fixed. They're the same dates for everyone on the standard calendar:
| Quarterly period | Update deadline |
|---|---|
| 6 April to 5 July | 7 August |
| 6 April to 5 October | 7 November |
| 6 April to 5 January | 7 February |
| 6 April to 5 April | 7 May (after the tax year ends) |
Notice each period starts on 6 April, not the day after the last quarter. That's the cumulative design again: every update is the year-to-date total, not just the latest three months.
For someone in the April 2027 wave, the first standard quarterly update covers 6 April to 5 July 2027 and is due by 7 August 2027.
What happens if I miss a deadline? {#penalties}
MTD for Income Tax brings in a points-based late submission system. Per HMRC, you get a penalty point for each quarterly update or tax return deadline you miss. When you reach the 4-point threshold, you get a £200 penalty, then a further £200 each time you miss another deadline after that.
Late payment of the tax itself is separate. Broadly, there's no penalty if you're up to 15 days late, then charges build the longer the tax stays unpaid, with an annual interest-style rate applied to amounts still outstanding from day 31. The exact percentages and timing are set out on HMRC's penalties page, linked in Sources, and HMRC has signalled a softer-landing approach in the early years, so check the current position for your year before relying on a specific figure.
The practical takeaway: the penalty regime rewards staying current. Quarterly habits, rather than a January scramble, are the whole point of the system.
Can I get an exemption? {#exemption}
Some people can be exempt, mainly where they're "digitally excluded". That covers situations where it isn't reasonable or practical for you to use compatible software, for example because of age, disability, location with no reliable internet, or religious grounds.
Exemption isn't automatic and isn't a matter of preference. You apply to HMRC, and they decide. If you think you have grounds, it's worth raising it well before your start date rather than after a deadline is missed. We can help you assess whether you'd qualify and prepare the application.
What should landlords do now? {#do-now}
If your combined gross property and self-employed income for 2025/26 is anywhere near £30,000, treat April 2027 as a real deadline, not a distant one.
- Add up your gross figures now. Total rent from all UK property, plus any self-employment turnover, for 6 April 2025 to 5 April 2026. That's your qualifying-income test for the 2027 wave.
- Don't be fooled by salary or dividends. They don't count toward the threshold, so the test can catch you even when your rent alone looks modest.
- Sort your record-keeping early. Moving from a spreadsheet or paper to compatible digital records is far easier done calmly in advance than under a quarterly deadline.
- Check the £20,000 wave too. If you're just under £30,000, the April 2028 wave (judged on your 2026/27 return) may still bring you in.
Want to know whether you're caught and get your records MTD-ready before April 2027? Book a call with a Zmartly accountant and we'll run the numbers with you. You can also explore how we support landlords day to day.
FAQs {#faqs}
Does my salary count toward the £30,000 MTD threshold?
No. Employment income taxed through PAYE does not count toward your qualifying income for MTD. Neither do dividends, the State Pension or private pensions. Only your gross self-employment and property income are tested against the threshold. Your salary and other income are still reported, but at the final declaration stage.
Is the £30,000 based on profit or total rent?
It's based on gross income, also called turnover, not profit. For a landlord that means the total rent you receive before deducting mortgage interest, repairs, letting fees or any other expenses.
Which year's income decides if I'm caught in April 2027?
Your 2025/26 tax year, reported on the Self Assessment return due by 31 January 2027. If that return shows qualifying income over £30,000, HMRC will tell you to start using MTD from 6 April 2027.
Do I have to file four tax returns a year under MTD?
No. The quarterly updates are cumulative year-to-date summaries of income and expenses, not four separate tax returns. The single end-of-year reckoning, where you claim reliefs and finalise your tax, is the final declaration, which replaces your Self Assessment return and is due by 31 January.
Are my UK and overseas rental properties counted together?
For the threshold test, yes, all your gross rental income counts toward the £30,000 total. But once you're in MTD, UK property is one business and foreign property is a separate business, so you keep records and report them separately.
Can I keep using a spreadsheet under MTD?
Yes, but not on its own. Spreadsheets are allowed if you connect them to HMRC using bridging software, because the data has to move through a digital link. You can't manually copy, paste or retype figures between programs.
