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Qualifying income is the figure HMRC uses to decide whether you fall under Making Tax Digital for Income Tax and from when. It is the gross turnover from self-employment and property before expenses, so the test uses your full rent and trade receipts rather than the profit left after deductions.
Rental income of £55,000 brings you into, for example, even where mortgage and costs leave £8,000 of profit. HMRC reads this figure from your most recent Self Assessment return, so a return you have already filed sets your current position.
KEY TAKEAWAYS
Qualifying income for MTD is measured using gross receipts, not profit. HMRC looks at income before expenses, deductions, mortgage interest, or allowances.
Self-employment and property income are combined when determining whether you exceed the Making Tax Digital threshold.
Employment income, pensions, dividends, savings interest, and capital gains do not count towards your qualifying income for MTD.
Joint property owners only include their share of rental income when calculating whether they fall within MTD requirements.
HMRC determines your MTD obligation using information from a previously filed Self Assessment return, rather than your current year's income.
The key figures come directly from your Self Assessment return, including turnover from self-employment and gross income from UK and foreign property businesses.
What Is Qualifying Income for MTD?
Self-Employment Income
All income from businesses you run as a sole trader, before taking off any costs. This includes fees for consulting, trades, professional services, or sales. If you have more than one business, HMRC totals all income to calculate your threshold.
Property Rental Income
All rent and property-related payments from your UK or overseas properties, before expenses. This includes basic rent, service charges, insurance claims, and any additional income from letting residential or commercial property.
Combined Income
If you earn from both self-employment and property, HMRC adds these to determine whether your qualifying income exceeds the MTD threshold.
Income Sources That Do not Count Toward MTD
Employment income: salaries, wages, or perks (like company cars) reported through PAYE
Pensions: state, workplace, or private pensions, plus annuities
Savings and investments: bank interest, share dividends, or income from REITs
Capital gains: profits from selling property, shares, or other assets
Foreign income (non-property): overseas wages, savings, or investments
Partnership income: profits from partnerships remain outside MTD until at least April 2027
Other income – social security payments, trust income, or similar sources
How Joint Property Ownership Affects Your Calculation
If you jointly own rental properties, only your share of the rental income counts toward your Making Tax Digital (MTD) threshold.
For example, if spouses share properties earning £80,000 a year and their ownership is split 50/50, each would include £40,000 in their qualifying income.
If one owner also has self-employment income, HMRC adds their property share to that income to check whether they meet the £50,000 threshold.
Importantly, MTD obligations are assessed individually. One owner's MTD mandate does not automatically obligate the other to comply; each person is tested separately.
Which Self Assessment Boxes Count Towards Qualifying Income?
These specific boxes from your Self-Assessment return will count towards the qualifying income threshold for different sources of income. Use these to total your qualifying income for MTD.
Self-Employment Income | UK Property Income | Foreign Property Income |
|---|---|---|
SA103F Box 15 or SA103S Box 9 – turnover | SA105 Box 20 – UK property income | SA106 Box 14 – foreign property income |
SA103F Box 16 or SA103S Box 10 – other income | SA105 Box 22 – lease premium | SA106 Box 16 – foreign lease premiums |
SA105 Box 23 – reverse premiums |
How HMRC Uses Your Qualifying Income
HMRC looks at the qualifying income on your most recent Self Assessment return, applying a current-year-minus-two basis.
The return for the 2024-25 tax year, due by 31 January 2026, is what determines a 2026-27 mandate, for example.
This look-back is deliberate. Your position is set by a return already filed, not by what you are earning in the current year, which gives a predictable read on when you come into scope.
The income threshold steps down over successive years, so a figure below the current level does not keep you outside MTD indefinitely.
For a comprehensive look into MTD thresholds and timeline, refer to Making Tax Digital key dates and guidelines.
Working Out Your Qualifying Income
Start by totalling the gross figures from every self-employment and property source, leaving out employment, pension and investment income.
Reading across your recent Self Assessment returns shows your income trend and tells you which return HMRC will use to set your position.
Factor in anything that could move the figure, such as a growing business, a new property or an additional income stream.
Advice is worth taking if you sit close to a threshold or your income arrangements are involved enough to make the calculation finely balanced.
With your qualifying income confirmed, the next steps are keeping the digital records MTD requires and choosing software that is recognised by HMRC, such as RentalBux.
Once your qualifying income is confirmed, it is worth knowing which costs you can deduct, since allowable expenses determine the profit you actually report and tax under MTD.
Conclusion
Qualifying income is the key figure HMRC uses to determine whether you must comply with Making Tax Digital for Income Tax. It is based on the gross income from self-employment and property businesses, not the profit remaining after expenses.
Understanding which income sources count, how joint ownership is treated, and where to find the relevant figures on your Self Assessment return can help you assess your MTD position early and prepare for any future reporting obligations.
Check If You're Required to Join MTD
Not sure whether your qualifying income brings you within Making Tax Digital for Income Tax? Use our free MTD Calculator to see if you meet the threshold and when you may need to start complying.
