The Making Tax Digital deadline for Income Tax closes this week, at 23:59 on Friday 7 August, and by Wednesday, 42% of the cohort, some 364,000 self-employed people and landlords, had still not registered. That is the story to act on first: any outstanding clients need chasing now, since HMRC is not offering a fallback filing route. Close behind it, HMRC has recovered £104 million from landlords for the third year running, with voluntary disclosures up sharply as better data catches smaller cases.
The other two are about planning rather than panic. The IFS has costed the frozen personal allowance, and new survey data shows R&D relief delays and clawbacks are pushing more SMEs to abandon claims altogether.
Here is the detail.
MTD for Income Tax Deadline Lands With 364,000 Taxpayers Still Unregistered
HMRC’s Making Tax Digital rollout for Income Tax passed a symbolic marker this week, but it is the shortfall that matters more than the milestone. By Wednesday 5 August, more than 500,000 self-employed individuals and landlords had registered, over half of the 864,000 taxpayers HMRC believes fall within the current £50,000-plus income threshold. That still leaves 364,000 people, 42% of the cohort, unregistered on the eve of the deadline.
Anyone who misses the cutoff at 23:59 on Friday 7 August does not escape the obligation. HMRC will send reminder letters by post, but the first quarterly update covering Q1 of 2026-27 was still due by the deadline, regardless of when registration happens. There is no online HMRC portal for any of this: every submission, whether the registration itself or the quarterly update, has to go through compatible third-party software.
Key facts:
- Registration and Q1 quarterly update deadline: 23:59, Friday 7 August 2026
- No penalties for missed quarterly deadlines in the 2026-27 transition year, but interest still applies to late payments
- Points-based penalty regime begins 6 April 2027: one point per missed deadline, £200 fixed penalty at four points
The system will not accept a placeholder nil return. Every submission needs to be a fully reconciled transaction feed linked to the client’s bank account, which cannot be assembled the night before a deadline. For any client who registered late or is still outstanding, the priority now is making sure their bookkeeping is actually MTD-ready, not just that they have signed up.
HMRC Recovers £104 Million From Landlords for a Third Straight Year
HMRC recovered £104 million in unpaid property tax during 2025-26, the third consecutive year that landlord recoveries have passed the £100 million mark. The bulk of that increase is coming through voluntary disclosure rather than direct enforcement.
Disclosures through the Let Property Campaign and related compliance work jumped 48% to 11,511 in the last year, the highest number since 2018-19. The average amount recovered per case fell from £13,713 to £9,063, which suggests HMRC is not just finding bigger, more deliberate cases. It is finding a much larger number of smaller ones.
Key facts:
- £104 million recovered from landlords in 2025-26, the third straight year above £100 million
- Let Property Campaign disclosures up 48% to 11,511, the highest since 2018-19
- Total recovered through the campaign since its 2013 launch: £674 million
The detection method is the detail worth passing on. HMRC is increasingly cross-referencing Land Registry data with AI and analytics to identify what it calls accidental landlords, people who inherited a property or moved abroad and may not realise they have a filing obligation at all. Any client who has come into a rental property through inheritance or relocation, rather than by deliberately buying to let, is worth a proactive check before HMRC gets there first.
IFS Puts an £8.4 Billion Price Tag on the Frozen Tax Threshold
The Institute for Fiscal Studies has costed the decade-long freeze on the personal allowance. Unfreezing the threshold and returning to annual inflationary increases would cost the government £8.4 billion a year, a figure that illustrates just how much revenue the freeze is currently generating by stealth.
The personal allowance has sat at £12,570 since April 2021 and is due to remain there until April 2031. Had it tracked inflation over that period, it would stand at £16,070 today. The gap between those two numbers is the plainest way to explain fiscal drag to a client who has not had a pay rise in real terms but has still moved tax bands.
Key facts:
- Cost of unfreezing the personal allowance and returning to inflationary increases: £8.4 billion a year
- Personal allowance frozen at £12,570 since April 2021, unchanged until April 2031; would be £16,070 today if inflation-linked
- 4.9 million more taxpayers by 2026-27 than if the freeze had never happened, rising to 6.1 million by 2030-31
None of this requires action before a specific date, but it is worth having ready for the client who asks why their tax bill keeps climbing when nothing about their income has changed. Around 4 million additional taxpayers have also been pulled into the 40% higher rate band over the same period, which is worth flagging separately for anyone close to that threshold.
R&D Tax Relief Delays & Clawbacks Push a Quarter of SMEs to Stop Claiming
A survey of 254 CFOs has found that 59% of SMEs are waiting four to six months for any substantive update from HMRC on R&D enquiries. That delay alone is enough to make the relief hard to plan around: 72% of finance leaders now consider the scheme too unreliable to include in formal financial planning.
The more damaging pattern is what happens after payment. Seventy percent of respondents said HMRC had paid out an R&D claim and then later opened a compliance check to try to recover some of that money. That reversal, rather than the delay itself, appears to be driving clients away from the relief altogether.
Key facts:
- 59% of SMEs waited four to six months for a substantive update on an R&D enquiry
- 70% reported a paid claim followed by a compliance check seeking to claw money back
- HMRC maintains it processed 89% of payable credit claims within 40 days in 2025-26, against an 85% target
Nearly a quarter of SMEs, and 45% of larger SMEs with 250 to 499 staff, have stopped submitting R&D claims altogether. HMRC’s own performance figures suggest the system is working as designed from its side. For clients still claiming, the practical response is not to stop, but to set expectations before submission that a compliance check after payment is a real possibility, not a sign that anything has gone wrong.
Conclusion
The pattern this week is HMRC’s data and enforcement machinery tightening just as structural pressure from frozen thresholds pulls more people into scope regardless of what HMRC does next. MTD registration and landlord compliance are both about better data closing gaps that used to go unnoticed, while the R&D findings show what happens when the same scrutiny lands on genuine claims rather than deliberate avoidance.
The immediate task is chasing any client still unregistered for MTD, since the obligation exists whether or not they signed up by Friday. The rest is closer to a watching brief: flag landlord clients who inherited or relocated, keep the fiscal drag numbers on hand for client conversations, and set R&D clients’ expectations before they file rather than after HMRC pays out.
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