For as long as Self Assessment has existed, chasing client records has been a January problem. A practice spends October hoping, November nudging, December chasing properly, and January phoning, emailing and occasionally collecting a shoebox of receipts before the 31 January deadline. It is unpleasant, but it happens once a year, so most practices absorb it with goodwill, overtime and a strong pot of coffee.
Making tax digital for income tax removes the once-a-year part. From 6 April 2026, sole traders and landlords registered for Self Assessment with qualifying income over £50,000 (based on the 2024-25 tax year) have to file quarterly updates as well as the annual return. The annual return does not go away either: the 2025-26 return is still due on 31 January 2027, running alongside the new quarterly cycle. If you want the full phase-in across all three thresholds, we cover it separately in the MTD income tax timeline.
Four deadlines a year make this a function, not a favour
The quarterly updates fall on 7 August, 7 November, 7 February and 7 May. That is not a loose schedule, it is four fixed dates a practice now owes HMRC on every mandated client, every year, indefinitely. A process that repeats on a set calendar, with a defined output and a real consequence for missing it, is not a ritual any more. It is a function, and functions can be operated: staffed, scheduled, measured and improved, the same way a practice already operates payroll or VAT returns.
Record-chasing habits that got a practice through one January a year will not survive four Augusts, Novembers, Februaries and Mays. A habit that worked because it only had to work once now has to work four times, back to back, with no long autumn run-up to hide the slippage in.
What the pipeline actually looks like at scale
Run the arithmetic on a mid-sized practice. Per client with a single trade, MTD means four quarterly updates plus the year-end process, in place of one annual cycle. A client with a trade and a rental property files separately for each income source, eight quarterly submissions a year rather than four. Scale that to a practice with 300 mandated clients and the quarterly workload alone comes to 1,200 submissions a year, landing in four deadline spikes rather than spread evenly across the calendar. We work through the full staffing arithmetic behind that number in our capacity math piece. None of it replaces the existing January Self Assessment peak. It sits alongside it.
A pipeline that size cannot run on a partner remembering to chase a client about their fuel receipts. It needs a defined process: who is due, who has been chased, who has responded, who is categorised, who is verified, who is filed. Four times a year, on the same four dates, for every client in scope.
What an unmanaged pipeline costs
HMRC's penalty model for missed quarterly updates is points-based: one point per missed submission, a £200 penalty once a client reaches four points on their quarterly obligations, and points that only clear after 24 months without a further miss. For 2026-27, HMRC is running a soft landing: no penalty points for a late quarterly update in that first year, though late-return and late-payment penalties on the annual side still apply as normal. That is a year to build the chase pipeline properly before points start accumulating for real, not a reason to leave it until year two.
Mapping the chase pipeline stage by stage
An operable function separates what a machine can do reliably from what needs a person's judgement, and puts a verification step between the two. For record chasing, that split looks roughly like this.
Mechanical, safe to automate: working out who is due and when, from the client list, income sources and the fixed deadline calendar. Sending the first, second and third reminder on a schedule, by the channel each client actually reads. A first pass at categorising bank feed transactions and uploaded receipts against standard categories.
Needs a person, always: deciding whether an unusual transaction is business or personal. Chasing a client who has gone quiet after three automated reminders, which needs a phone call and a relationship, not another email. Signing off the quarterly update before it reaches HMRC.
The verification layer in between: every machine-categorised transaction gets checked against a sample or a threshold before it is trusted, rather than assumed correct because software produced it. Reminders that go unanswered escalate to a named human at a fixed point, not indefinitely. And the pipeline reports on itself: which clients cleared on the first reminder, which needed all three, which needed a phone call, refreshed before each of the four deadlines rather than discovered during deadline week.
That last part, the scorecard, is what turns four deadlines a year from four annual panics into a process the practice can see coming. It is the same discipline behind how we run reporting as an operated function: agreed thresholds, trends tracked over time rather than judged run by run, and problems visible before they become a missed filing rather than after.
We are not tax advisers
BlooSprout builds and runs the operational machinery behind a function like record chasing. We are not tax advisers, and nothing here is tax advice. For the current rules on scope, thresholds and deadlines, HMRC's own guidance on making tax digital for income tax is the source to check, and it is worth a direct read before any practice sets its process around it, ours included.
Build the pipeline before the first deadline finds the gaps
The practices that feel MTD as a burden will be the ones still running record chasing as a January habit stretched thin across four dates a year. The ones that do not will be the ones who mapped the pipeline once, decided what to automate, where verification sits, and who owns escalation, before 7 August arrives and tells them anyway. If you want a second pair of eyes on where your own chase process is mechanical, where it needs judgement and where the actual gaps are, book the free 15-minute audit. We will look at your pipeline, not sell you a tax opinion.