If you let property in the UK, you have probably heard that Making Tax Digital for Income Tax (MTD) is now landing on landlords, and that there is a £50,000 figure that decides whether you are in. The question almost everyone asks first is the one that actually matters most: is that £50,000 measured against your rent before expenses, or your profit after them?
The short version is that it is your gross rent, before a single expense comes off. And it is not just your rent. HMRC adds any self-employment income on top before testing the threshold. That trips up far more landlords than you would expect.
This guide explains exactly what "qualifying income" means, what counts and what does not, and how to work out whether you are mandated from 6 April 2026 (or a later year). We have checked every rule and figure here against the current gov.uk guidance, and there is a worked example and a deadline table so you can see where you stand.
It is written for UK landlords. If that is you, our accounting for landlords page sets out how we help, and you can sanity-check your tax position with our income tax calculator as you read.
Is rental income gross or net for MTD qualifying income?
For MTD, your rental income is counted gross, meaning your total rent before you deduct any expenses. HMRC then adds your gross self-employment income (your turnover) to it. The combined figure is your "qualifying income", and that is what is tested against the threshold.
This is the single most important point in the whole regime, so it is worth being precise about it.
What does HMRC mean by qualifying income?
HMRC defines qualifying income as "the total income you get in a tax year from self-employment and property". Crucially, the guidance says HMRC "will assess your gross income (income before you deduct expenses, also called your turnover)".
So three things are true at once:
- It is gross, not net. Mortgage interest, letting agent fees, repairs, insurance and the rest do not reduce it.
- It aggregates. Your property income and your self-employment income are added together, not tested separately.
- It is tested against a threshold that steps down over three tax years (covered below).
In practice, the mistake we see most often is a landlord who makes very little actual profit, assumes they are nowhere near £50,000, and is genuinely surprised to learn they are mandated. A heavily mortgaged portfolio can be cash-flow tight while still turning over well above the threshold.
How is the MTD threshold worked out for landlords?
The threshold steps down in three phases. The figure HMRC uses is the gross, aggregated qualifying income from a specific earlier tax year, taken from the Self Assessment return you have already filed.
| Phase | Mandated from | Qualifying income over | Tax year HMRC checks |
|---|---|---|---|
| Phase 1 | 6 April 2026 | £50,000 | 2024/25 |
| Phase 2 | 6 April 2027 | £30,000 | 2025/26 |
| Phase 3 | 6 April 2028 | £20,000 | 2026/27 |
HMRC's own wording is that "to assess your qualifying income for a tax year, we'll look at the Self Assessment tax return that you submitted in the previous tax year". For Phase 1, that means your 2024/25 return is the one that decides whether you start on 6 April 2026. If HMRC reviews it and finds your qualifying income was over £50,000, they will write to confirm you need to start.
A few things to note:
- These thresholds and dates are set out in HMRC guidance and the underlying regulations. Phase 1 (£50,000 from 6 April 2026) is live. The £30,000 and £20,000 tiers follow in 2027 and 2028 respectively.
- Employment and pension income do not count toward the threshold, but you will still report it at the final declaration stage.
- Once you are in, you generally stay in, even if your income later dips below the threshold (the rules on falling below have their own conditions, so check before assuming you can leave).
Worked example: the gross-versus-net trap
Illustrative example. Priya is a landlord with three flats. In 2024/25 her total rent was £55,000. After mortgage interest, agent fees, repairs and insurance, her actual taxable profit was only about £15,000. She also does a little freelance interior-design work on the side, with turnover of £6,000. Priya assumes she is well under £50,000 because her profit is so modest. But qualifying income is gross and aggregated: - Gross rental income: £55,000 - Gross self-employment turnover: £6,000 - Qualifying income: £61,000 £61,000 is over the £50,000 threshold, so Priya is mandated into MTD for Income Tax from 6 April 2026, despite a taxable profit of only around £15,000. Her expenses are irrelevant to the test. They only come back into the picture when she works out the tax she actually owes.
This is exactly why "gross or net" is not a pedantic question. Getting it wrong is the difference between thinking you are exempt and missing a legal start date.
What income counts toward the threshold, and what does not?
HMRC is specific about what goes into qualifying income and what stays out. Getting this right stops you either over-counting (and panicking) or under-counting (and missing your start date).
| Counts toward qualifying income | Does NOT count |
|---|---|
| Gross UK rental income | Employment income (PAYE) |
| Gross foreign property income (if UK tax resident) | State Pension |
| Your share of jointly owned property income | Private pensions |
| Gross self-employment turnover (sole trader) | Dividends, including from your own company |
| Your share of partnership profit as an individual partner | |
| Income from UK REITs or PAIFs | |
| Qualifying care relief | |
| Transition profits under basis period reform |
A couple of points worth flagging for landlords specifically:
- Joint ownership is your share only. If you and a partner own a property that brings in £42,000 a year and you split it equally, your qualifying income from it is £21,000, not £42,000. HMRC counts your share.
- Dividends and salary from your own company do not count. If you hold property personally but draw income from a trading company, that company income sits outside the test. Only your personal sole-trader and property income aggregate.
Does all my property count as one business?
For UK property, yes. HMRC treats all of your UK properties together as a single "UK property business", so you do not keep separate digital records for each UK property you own. All of your foreign properties are treated as one separate "foreign property business".
If you are also self-employed, each separate trade is its own business. A landlord who is also a builder, for example, keeps separate records and makes separate submissions for the property business and the trade. They still aggregate for the threshold test, but they are reported separately once you are inside MTD.
What does being mandated actually involve?
If your gross, aggregated qualifying income puts you over the line, here is what changes. None of it is a fourth tax return, despite how it sometimes gets described.
Digital records. You must keep digital records of your property (and any self-employment) income and expenses, with the amount, date and category for each. Manual copy-paste between programs is not allowed. Where data moves between bits of software, it has to move by a "digital link". If you prefer spreadsheets, you can keep using them, but you will need bridging software that links the spreadsheet to HMRC.
Quarterly updates. Four times a year you send HMRC a summary of your income and expenses using compatible software. HMRC is clear that these are "summaries, not tax returns". Importantly, each update is cumulative: it "covers from the start of the tax year to the end of the update period, not just the previous three months". That means you can correct an earlier figure in a later update without resending anything.
Final declaration. After the tax year ends, you make a final declaration by 31 January. This is where you confirm the year's figures, claim your reliefs and allowances, and report other income such as employment or pensions. The final declaration replaces your annual Self Assessment return.
When are the quarterly update deadlines?
The standard quarterly periods and deadlines run as follows. (You can choose "calendar quarter" reporting instead, which shifts the period ends to month-end, but the standard dates below are the default.)
| Quarterly period | Standard 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 (following year) |
| Final declaration | 31 January (following the tax year) |
So for the first mandated year, 2026/27, the first quarterly update is due by 7 August 2026, and the final declaration for that year is due by 31 January 2028.
What are the penalties if I miss a deadline?
Late submissions work on a points system. You get a penalty point each time you miss a quarterly update or final declaration deadline. Reach 4 points and you get a £200 penalty, then a further £200 each time you miss another deadline after that. Points are removed automatically after a clean period.
Late payment of tax is charged separately on a tiered basis that depends on how late you are, with the percentage stepping up as the regime beds in. The exact percentages and grace periods are set out on HMRC's penalties page, linked in the Sources below, and it is worth reading them before your first year rather than after.
What should landlords do now?
The practical steps are straightforward, and the earlier you take them the calmer the first year is.
- Pull your last filed return. Look at gross rent plus any gross self-employment turnover. That is your qualifying income figure for the threshold test.
- Check the year that applies to you. For a 6 April 2026 start, it is your 2024/25 figures against £50,000.
- Add in every source. Multiple properties, a share of a jointly let property, a side trade. They all aggregate, gross.
- Sort your records and software. Decide between dedicated software or a spreadsheet plus bridging software, and start keeping records digitally well before your start date.
- Get a second pair of eyes if you are close to a threshold. A few thousand pounds either side of £50,000, £30,000 or £20,000 changes your obligations entirely.
If you would rather not work out the threshold, set up compatible software and run quarterly updates yourself, that is exactly the kind of thing we handle for landlords. You can see how on our landlord accounting page, and our income tax calculator will help you estimate the tax behind those gross figures.
Frequently asked questions
Is rental income gross or net for MTD qualifying income?
Gross. HMRC tests your total rent before any expenses are deducted, and then adds your gross self-employment turnover on top. Your expenses and profit do not affect whether you are mandated; they only affect the tax you eventually pay.
Does my self-employment income count toward the landlord MTD threshold?
Yes. Qualifying income aggregates self-employment and property income. If you have £40,000 of gross rent and £15,000 of gross self-employment turnover, your qualifying income is £55,000, which is over the £50,000 threshold for a 6 April 2026 start.
I make almost no profit on my rentals. Am I still caught by MTD?
Possibly. The test is on gross income, not profit. A highly geared portfolio can turn over well above £50,000 while making little or no taxable profit, and the landlord would still be mandated. Check your gross figures, not your bottom line.
Does jointly owned property count in full toward my threshold?
No. You count only your share of the income from a jointly owned property. If a property brings in £42,000 and you own half, your qualifying income from it is £21,000.
Do my salary, pension or dividends count toward the threshold?
No. Employment income, the State Pension, private pensions and dividends (including from your own company) do not count toward qualifying income. You will still report relevant income at the final declaration stage, but it does not decide whether you are mandated.
Are quarterly updates four separate tax returns?
No. They are cumulative summaries of your income and expenses from the start of the tax year to the end of each period. Your tax is finalised once a year in the final declaration by 31 January, which replaces your Self Assessment return.
