MTD threshold dropping to £30k in 2027: should you prepare now?
Sole traders and landlords with gross income between £30,000 and £50,000 missed the first wave of MTD for ITSA but are already in scope for the second.
The phased rollout
| Qualifying income | Mandatory from | Based on tax year |
|---|---|---|
| Over £50,000 | 6 April 2026 | 2024/25 |
| Over £30,000 | 6 April 2027 | 2025/26 |
| Over £20,000 | 6 April 2028 | 2026/27 |
Anyone in the £30,000–£50,000 band is mandated in from 6 April 2027, based on the 2025/26 tax return, due by 31 January 2027. All three phases, including the £20,000 threshold for 2028, are now confirmed — the £20,000 phase sits in The Income Tax (Digital Obligations) Regulations 2026, not merely an announcement.
Why the retrospective test matters here specifically
Because HMRC checks an already-filed return, April 2027 status is effectively decided by income in the current tax year, 2025/26, not by whatever is being earned once April 2027 arrives. Gross income crossing £30,000 this year locks a taxpayer into MTD from April 2027 regardless of what happens to income between now and then — which cuts both ways: anyone currently under £30,000 but expecting a strong year should be tracking gross income now, not waiting until next January to find out where they landed.
The case for preparing early
The first cohort's problems are already public. The over-£50,000 group went through the roughest year of MTD in 2026/27, and every practical failure point — software that mishandles a particular income combination, reconciliation habits that don't survive quarterly pressure, confusion over what counts as qualifying income — has already surfaced by the time a later cohort's mandatory date arrives.
Software and process changes also take longer to bed in than expected. Moving from annual to quarterly record-keeping is a habit change, not a software install, and six months to a year of informal practice means the first mandatory quarter isn't also the first quarter ever attempted. The soft landing granted to the first cohort is unlikely to repeat automatically — HMRC's penalty-point easement for late quarterly updates has been confirmed for 2026/27 for the first mandated group only, with no indication it extends to those joining in 2027 or 2028. Deadlines for later cohorts should be planned as though they count from day one.
Voluntary sign-up carries real trade-offs
Sole traders and landlords can sign up for MTD before their mandatory date, provided they are registered for Self Assessment and have submitted a return in the last two years. Volunteering is not a no-stakes trial.
Missed quarterly update deadlines carry no penalty while volunteering — that part is lower-pressure. The tax return deadline is not: signing up means agreeing to a new points-based penalty system, and a volunteer's threshold is two points before a £200 penalty rather than the four points a mandated user gets. The new, more proportional late-payment structure applies too. Once agreed, the new rules cannot be reversed, even if volunteering later stops. And if a volunteer is subsequently mandated in anyway, quarterly updates start counting toward penalty points and the threshold rises from two to four, with any existing points scaled up rather than reset.
Volunteering makes more sense for anyone close to the £30,000 line who expects mandation soon regardless, confident in hitting their Self Assessment deadline reliably, and keen to resolve software and process issues before they're compulsory. It makes less sense for anyone comfortably under £30,000 with no expectation of crossing it, or anyone who isn't confident about consistently hitting their return deadline — for that group, the lower penalty threshold is a real cost, not a formality.
What to do before April 2027
Gross income through 2025/26 should be tracked now, since it decides April 2027 status. MTD-compatible software is worth adopting for record-keeping ahead of any submission requirement — see the software breakdown for the options. Monthly reconciliation, rather than a year-end backlog, is the single biggest predictor of a smooth transition. Positions are worth rechecking closer to the mandatory date, since HMRC continues to adjust details of the rollout.
Check where you stand
Our MTD Readiness Checker shows whether mandation applies from 2026, 2027, or not yet.
Related reading:
- Do I need to do Making Tax Digital in 2026?
- What counts as "qualifying income" for MTD — and what doesn't
- MTD-compatible software: what "compatible" actually means
This is general guidance, not professional tax advice. Threshold dates and rules can change — check current guidance on GOV.UK.