Making Tax Digital for Income Tax is being rolled in over three years, and which year you join depends on your income. It currently applies to sole traders and landlords.
Qualifying income is your gross income, meaning your turnover before you take off any expenses, from self-employment and property combined. So a tradesperson turning over £35,000 with £20,000 of rental income has £55,000 of qualifying income, which means they were in from April 2026.
What does not count: wages or salary taxed through PAYE, pensions, dividends, savings interest, and capital gains. Those sit outside the qualifying income test.
HMRC looks at your most recent Self Assessment return. For the April 2026 phase, that means your 2024/25 return. As the thresholds drop in later years, more and more people are brought into scope, until almost everyone who files a Self Assessment is included.
Worth knowing: limited companies are not affected, because Making Tax Digital does not apply to corporation tax. If you are not sure which phase you fall into, this is the sort of five-minute question a good accountant can answer for you on the spot. Mazuma checks this kind of thing for clients as a matter of course.
Key differences between the two:
Covers injury or damage to the public.
Covers injury or illness to employees.
Not legally required.
Legally required with staff.
Common for customer-facing businesses.
Required for any business with staff.