This guide explains how the MTD threshold really works, which tax year HMRC checks, and what happens if you have several properties, joint ownership, rental income alongside a trade, or overseas property income. If you already know MTD applies to you and just want to check the filing deadlines, our MTD key dates guide is the better place to start.
Key Takeaways
What Are the MTD Income Tax Thresholds?
MTD for Income Tax is being introduced gradually, so the date you need to start depends on your qualifying income from an earlier tax year. In simple terms, the more qualifying income you have, the sooner MTD applies.
Qualifying income | MTD starts | Tax Year HMRC Checks | First quarterly update due | First MTD tax return due |
|---|---|---|---|---|
Over £50,000 | 6 April 2026 | 2024/25 | 7 August 2026 | 31 January 2028 |
Over £30,000 | 6 April 2027 | 2025/26 | 7 August 2027 | 31 January 2029 |
Over £20,000 | 6 April 2028 | 2026/27 | 7 August 2028 | 31 January 2030 |
£20,000 or less | MTD not required | - | - | Continue with normal Self-Assessment |
Two dates are especially important. Your first quarterly update is due on 7 August, rather than at the end of the quarter itself. Also, joining MTD does not change the tax return you are already due to submit. For example, if you enter MTD on 6 April 2026, you will still file your 2025/26 Self-Assessment return by 31 January 2027 in the usual way. Your first tax return under MTD will cover 2026/27 and will be due by 31 January 2028.
What Counts as Qualifying Income for MTD?
For MTD, HMRC mainly looks at your gross income from self-employment and property before expenses are deducted. If you are both a landlord and a sole trader, these amounts are added together. For example, if you receive £28,000 in rental income and £25,000 from self-employment, your qualifying income is £53,000.
This is where people can easily get caught out: MTD is based on gross income, not profit. Costs such as mortgage interest, letting agent fees and repairs do not reduce your income for the threshold test. HMRC also leaves out certain other income, including:
- employment income taxed through PAYE
- your share of profits from a partnership
- dividends, including dividends from your own company
- State Pension and private pension income
- income from UK REITs and Property Authorised Investment Funds (PAIFs)
- transition profits arising from the basis period reform
So, your total taxable income could be above the MTD threshold without MTD applying. What matters is the qualifying income from your self-employment and property activities.
How Do You Know If You Cross the MTD Threshold?
To work out whether MTD applies, add together all your qualifying property and self-employment income before deducting expenses. HMRC looks at the combined figure, rather than testing each property or source of income separately.
Do You Add Income from Multiple Properties Together?
Scenario: You own three rental properties bringing in £19,200, £16,800 and £15,600 a year. Your total mortgage interest is £24,000.
Calculation:
£19,200 + £16,800 + £15,600 = £51,600 qualifying income
The mortgage interest does not reduce this figure because the MTD threshold is based on gross income before expenses.
Result: If this was your 2024/25 income, the £51,600 total exceeds the £50,000 threshold, so you would normally need to use MTD since 6 April 2026.
This is particularly important for landlords with several properties. Each property does not get its own MTD threshold. Even if every property earns a relatively modest amount, the combined rental income can still take you over the limit.
Does Self-Employment Income Count with Rental Income for MTD?
Yes. HMRC adds your qualifying self-employment and property income together.
Scenario: You earn £18,000 from freelance work and receive £14,500 in gross rent from a buy-to-let property.
Calculation:
£18,000 + £14,500 = £32,500 qualifying income
Result: Neither income source is above £30,000 on its own, but together they exceed the threshold. If this was your qualifying income for 2025/26, you would normally need to use MTD from 6 April 2027.
Note
The key point is simple: it is your combined qualifying income that matters, not whether one individual source crosses the threshold.
How Is Jointly Owned Property Income Tested for MTD Threshold?
If you own property jointly, HMRC counts only your share of the rental income, not the total rent from the whole property. This means two people who own the same portfolio can have different MTD start dates.
Example: You and your spouse own a rental portfolio 50/50 that earns £96,000 a year. You also earn £6,000 from a side business.
- You: £48,000 rent + £6,000 trade income = £54,000
- Your spouse: £48,000 rent = £48,000
Result: Based on 2024/25 income, you would need to use MTD since 6 April 2026, while your spouse would not. If your spouse still had £48,000 of qualifying income in 2025/26, they would then need to join from 6 April 2027.
For married couples and civil partners living together, jointly owned property income is normally split 50/50. If you genuinely own the property in unequal beneficial shares, a valid Form 17 declaration can make the tax split follow those actual ownership shares instead.
Want to know more about Form 17, Read our article from UKPA: Form 17 & Deed of Trust
Does Overseas Property Income Count Towards the MTD Threshold?
For example, if you received £30,000 of UK rent and £25,000 from a property in France in 2024/25, your qualifying income would be £55,000. That puts you above the £50,000 threshold, even though neither source exceeds it on its own.
If you are non-UK resident, the position is different. HMRC generally looks at your UK property income and any self-employment income reported on your UK Self-Assessment return. Overseas property or self-employment income that was not reported on your UK return does not count towards the MTD threshold.
What if You Filed an SA109?
If your 2024/25 return included an SA109, you are automatically exempt from MTD for 2026/27. You do not need to apply. However, the exemption only lasts for that year. If your qualifying income for 2025/26 is above £30,000, you would normally need to use MTD from 6 April 2027.
If you did not file an SA109 for 2024/25 but expect to file one for 2025/26 or 2026/27, you may need to apply to HMRC for the temporary exemption.
Also remember that overseas income must be reported in pounds sterling. Exchange-rate movements can therefore affect your qualifying income, which may be important if you are close to an MTD threshold.
Speak to Our Property Tax Specialists
UK Property Accountants can review your residence position, SA109 filing requirements and qualifying income to confirm your MTD start date and help you stay compliant.
What Happens if Your Income Moves Near an MTD Threshold?
Crossing an MTD threshold during the year does not mean you have to join immediately. HMRC normally uses income from an earlier Self-Assessment return to decide your start date. So, if your qualifying income was £46,000 in 2024/25, you would not enter MTD from April 2026, even if your income later increased sharply.
What if You Amend an Earlier Tax Return?
The timing of the amendment matters:
- Before the MTD year starts: an amendment can bring you into, or take you out of, MTD.
- After the year starts: an amendment that reduces your income below the threshold can take you out, but an increase above the threshold will not bring you in for that year.
Income from a property or business that has since stopped may still count if you have another qualifying income source. HMRC may also adjust, or annualise, income where the relevant period is shorter than 12 months.
Can You Leave MTD if Your Income Falls?
Yes. If you were required to use MTD and your qualifying income stays below the threshold for three consecutive tax years, you can usually opt out.
You can also join voluntarily before MTD becomes compulsory. This can help you get used to digital records and quarterly updates, but it also means extra reporting sooner than required. If your income is close to a threshold, it is worth checking your likely MTD start date before deciding.
What Are the Key MTD Dates & Deadlines You Cannot Miss?
Once you are using MTD, there are four quarterly deadlines to remember: 7 August, 7 November, 7 February and 7 May. You will then submit your final tax return by 31 January after the end of the tax year. Your tax payment dates stay the same as under Self-Assessment: 31 January and 31 July. So, although you report income quarterly, you do not pay tax every quarter.
HMRC is allowing some flexibility in the first year. For 2026/27, late quarterly updates will not attract penalty points. From 2027/28, the normal penalty system applies: each missed quarterly deadline gives you one point, and reaching four points triggers a £200 penalty, with another £200 for each further missed submission. This first-year relaxation only applies to quarterly updates, so late tax returns and late tax payments can still lead to penalties from the outset.
How Do You Check If You Meet the MTD Threshold?
Use this checklist to see whether your qualifying income takes you over the MTD threshold:
- Start with the right tax year. Use the gross income reported on the Self-Assessment return HMRC uses to determine your MTD start date.
- Add up your property income. Include all UK property income and, if you were UK resident, any overseas property income that counts.
- Add your self-employment income. HMRC combines qualifying property income and self-employment turnover when testing the threshold.
- Count only your share of jointly owned property. For married couples and civil partners, check whether the normal 50/50 split applies or whether a valid Form 17 changes the share.
- Leave out non-qualifying income. PAYE employment income, dividends, pensions and your share of partnership profits do not count.
- Check whether an exemption applies. Certain circumstances, including filing an SA109 residence page or claiming specific reliefs, may give you a temporary MTD exemption.
- Compare your total with the correct threshold. HMRC looks at qualifying income from an earlier tax year, not simply what you are earning now.
Frequently Asked Questions
No. Only your share of the rental income counts towards your MTD threshold. If a jointly owned property earns £50,000 and your share is 50%, only £25,000 counts as your qualifying income.
Yes, if you are UK tax resident, HMRC generally includes both UK and overseas property income. If you are non-UK resident, foreign property income not reported on your UK Self-Assessment return does not usually count.
You do not usually leave MTD straight away. If you were required to use it, your qualifying income normally needs to stay below the relevant threshold for three consecutive tax years before you can opt out.
Yes. You can join MTD early if you meet HMRC’s eligibility rules. You will need compatible software, digital records and quarterly updates, but voluntary users can opt out through their HMRC account.
HMRC uses an earlier tax year to set your start date: 2024/25 for April 2026, 2025/26 for April 2027 and 2026/27 for April 2028. You are still responsible for checking whether MTD applies, even if HMRC does not contact you.
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