MTD for builders is a free checker for self-employed CIS subcontractors in the UK (bricklayers, joiners, sparks, plumbers, groundworkers and other trades).
Making Tax Digital for Income Tax starts in April 2026 for people with qualifying income over £50,000, April 2027 for over £30,000 and April 2028 for over £20,000. Many subbies are not sure which group they fall into, because the test uses gross income before expenses and CIS deductions.
How it works:
- Say how you work (self-employed, partnership, or with rental income)
- Enter your income for the tax year the test uses
- Get a straight answer: whether you need MTD, from which April, and the key dates
The rules are checked against GOV.UK. Your numbers stay on your device: nothing is saved and there is no sign-up. Made by Sovereign Plus, a UK CIS payroll bureau; an optional call-back form is there if you want help.
