How Qualifying Income Works for MTD: Self-Employment and Rental Income Combined
Last updated: February 2026
One of the most common questions I hear from clients is: “Do I actually need to sign up for Making Tax Digital?” The answer depends entirely on your qualifying income, and most people get this calculation wrong. They use profit instead of gross income, or they forget to include their rental income alongside their self-employment earnings. In this guide, I will explain exactly how HMRC defines qualifying income, walk through four realistic worked examples, and flag the mistakes I see people make every week.
What is qualifying income for MTD?
Qualifying income for Making Tax Digital for Income Tax Self Assessment (MTD ITSA) is the combined total of two specific income sources:
- Gross self-employment income — your total business turnover or receipts
- Gross UK property income — your total rental receipts from UK properties
The word gross is critical here. It means your total income before deducting any expenses, allowances, or reliefs. It is not your taxable profit. If your business turns over £60,000 but your profit after expenses is only £25,000, HMRC uses the £60,000 figure to decide whether you fall within MTD.
Only these two sources count. Employment income, dividends, pension income, savings interest, and capital gains are all excluded from the qualifying income calculation. A sole trader with £45,000 of self-employment income and £80,000 of employment income has a qualifying income of just £45,000 — the employment income is irrelevant.
How the threshold calculation works
HMRC is rolling MTD ITSA out in three phases, each bringing in taxpayers at progressively lower income levels. The phase that applies to you depends on your qualifying income for the tax year in question.
Phase 1 (6 April 2026): qualifying income above £50,000
From 6 April 2026, if your combined gross self-employment and UK property income exceeds £50,000, you must comply with MTD ITSA. You will need to keep digital records and submit quarterly updates to HMRC using compatible software for each income source.
Phase 2 (6 April 2027): qualifying income above £30,000
From 6 April 2027, the threshold drops. If your qualifying income exceeds £30,000, you will be brought into MTD ITSA. This captures a much larger group, including many landlords with modest portfolios.
Phase 3 (6 April 2028): qualifying income of £20,000 or more
From 6 April 2028, the threshold drops again. If your qualifying income is £20,000 or more, you must comply. Note that this phase uses “£20,000 or more” rather than “above £20,000” — meaning exactly £20,000 is included.
| Phase | Start date | Qualifying income threshold |
|---|---|---|
| Phase 1 | 6 April 2026 | Above £50,000 |
| Phase 2 | 6 April 2027 | Above £30,000 |
| Phase 3 | 6 April 2028 | £20,000 or more |
Not sure which phase applies to you? You can use our threshold checker to find out in seconds.
Worked examples
These four scenarios cover the situations I encounter most frequently. In every case, I will show the full working so you can see exactly how HMRC arrives at the qualifying income figure.
Example 1 — Sole trader only
Sarah runs a freelance graphic design business in Manchester. Her figures for the 2026/27 tax year are:
- Gross self-employment income (total invoiced): £55,000
- Business expenses (software, equipment, travel): £15,000
- Taxable profit: £40,000
Qualifying income calculation:
Gross self-employment: £55,000 + Gross UK property: £0 = £55,000
Sarah’s qualifying income is £55,000, not her £40,000 profit. This exceeds the £50,000 threshold, so she falls into Phase 1 from 6 April 2026. She must keep digital records and submit quarterly updates from that date.
Example 2 — Landlord only
David owns three buy-to-let properties in Leeds. His figures for 2027/28 are:
- Total gross rental income (all three properties): £35,000
- Property expenses (mortgage interest, repairs, insurance, agent fees): £12,000
- Rental profit: £23,000
Qualifying income calculation:
Gross self-employment: £0 + Gross UK property: £35,000 = £35,000
David’s qualifying income is £35,000. He has no self-employment income to add, but his rental income alone exceeds the £30,000 threshold. He falls into Phase 2 from 6 April 2027. Read our MTD for landlords guide for details on how property income reporting works under MTD.
Example 3 — Combined sole trader and landlord
Priya is a self-employed marketing consultant who also rents out a flat in Birmingham. Her figures for 2026/27 are:
- Gross self-employment income: £28,000
- Gross rental income: £25,000
- Self-employment expenses: £6,000
- Property expenses: £8,000
Qualifying income calculation:
Gross self-employment: £28,000 + Gross UK property: £25,000 = £53,000
This is the scenario that catches people out. Neither income source alone exceeds £50,000, but combined they total £53,000. Priya falls into Phase 1 from 6 April 2026. She will need to submit separate quarterly updates for her self-employment and property income — see our guide on multiple income sources for how this works in practice.
Example 4 — Below all thresholds
James does occasional freelance photography and rents out a spare room via a letting agent. His figures for 2028/29 are:
- Gross self-employment income: £12,000
- Gross rental income: £6,000
Qualifying income calculation:
Gross self-employment: £12,000 + Gross UK property: £6,000 = £18,000
James’s qualifying income is £18,000. Even under the lowest Phase 3 threshold (£20,000 or more), he is not mandated into MTD ITSA. He can continue using traditional Self Assessment unless he chooses to sign up voluntarily.
Common mistakes people make
Mistake 1 — Using profit instead of gross income
This is the single most common error I see. Clients tell me their qualifying income is £32,000 when their actual gross turnover is £58,000. They have subtracted expenses before comparing against the threshold. HMRC does not care about your profit for this calculation. It uses your gross income — total receipts before any deductions.
Mistake 2 — Forgetting to add property income
Many sole traders focus entirely on their business income and forget they also receive rent from a buy-to-let. If you have both income types, you must add them together. A sole trader earning £35,000 who also receives £20,000 in rent has a qualifying income of £55,000, not £35,000.
Mistake 3 — Including employment income in the calculation
If you earn a salary alongside self-employment or rental income, your employment income does not count towards the qualifying income threshold. Someone with a £70,000 salary and £15,000 gross self-employment income has a qualifying income of just £15,000. The salary is irrelevant to the MTD calculation.
Mistake 4 — Using last year’s income when this year has changed
Your qualifying income is assessed for the tax year in question, not the previous year. If your gross income was £52,000 last year but drops to £48,000 this year, you may not need to comply this year. Conversely, if your income rises above the threshold, you will need to comply even if you were previously below it.
Mistake 5 — Confusing the VAT threshold with the MTD ITSA threshold
The VAT registration threshold is £90,000 (from 1 April 2024). The MTD ITSA thresholds are £50,000, £30,000, and £20,000 depending on the phase. These are completely separate obligations. You could be required to comply with MTD ITSA but not be VAT registered, or vice versa. Do not mix them up.
What if your income fluctuates?
HMRC looks at your qualifying income for the tax year your Self Assessment return relates to. If your gross income exceeds the relevant threshold in a given year, you must comply with MTD for that year.
If your income drops below the threshold in a later year, you may no longer be required to comply. However, once you have been mandated into MTD, you must continue submitting quarterly updates until you formally opt out. You cannot simply stop filing because your income has dipped. Read our guide on opting out of MTD for the process involved.
My advice: if your income is close to a threshold boundary, plan ahead. Set up your digital records and compatible software before you are mandated, so you are not scrambling when the obligation kicks in.
Do you need separate software for each income source?
If you have both self-employment and property income, you must submit separate quarterly updates for each income source. That means four updates per year for your business and four for your rental income — eight submissions in total, plus a Final Declaration by 31 January following the end of the tax year.
The good news is that most MTD-compatible software handles multiple income sources within a single subscription. You do not necessarily need to buy two separate products. Check that any software you choose supports both self-employment and property income reporting before you commit.
Frequently asked questions
I have two rental properties — do I add them together?
Yes. Your gross UK property income is the total rental income from all your UK properties combined. If Property A generates £18,000 and Property B generates £14,000, your gross property income is £32,000. You report all UK property income as a single source for MTD purposes, not separately for each property.
Does Airbnb income count as property income for MTD?
Yes. Short-term holiday lettings through platforms like Airbnb count as UK property income. The gross receipts are included in your qualifying income calculation alongside any other rental income you receive.
My spouse and I jointly own a rental property — how is income split?
For jointly owned property, each owner includes their share of the gross rental income in their own qualifying income calculation. If you and your spouse own a property 50/50 and it generates £40,000 gross rent, each of you includes £20,000 in your qualifying income. If you have a formal declaration of beneficial interests lodged with HMRC (Form 17), the income split follows that declaration.
I started a business mid-year — do I still count the full year?
You include whatever gross income you actually earned during the tax year, even if you only traded for part of it. If you started your business in October and earned £35,000 gross by the following April, your qualifying income for that tax year is £35,000. HMRC does not annualise your income or scale it up to a full-year equivalent.
What about overseas property income?
Only UK property income counts towards the qualifying income threshold for MTD ITSA. If you own rental properties abroad, the income from those properties is not included in the qualifying income calculation. You must still declare overseas property income on your Self Assessment return, but it does not affect whether you are mandated into MTD.
