The first-ever Making Tax Digital quarterly deadline passed on 7 August 2026, and the numbers HMRC published five days later tell a blunt story. Roughly 864,000 sole traders and landlords were in scope. Just over 570,000 had signed up for the service. Fewer than 437,000 actually submitted their first quarterly update on time. In other words, close to half of everyone affected missed the biggest change to UK self-employed taxation in a generation — and most of the year's real deadlines are still ahead.
If you are in that group, two things are true. First, nothing bad has happened yet: no penalty points are being issued for late quarterly updates during this first tax year. Second, the clock is running anyway: your next quarterly update is due by 7 November 2026, HMRC begins forcibly enrolling stragglers in September, and the penalty amnesty quietly expires in April 2027. Here is what the new system actually requires, where you stand, and what to do next.
What Making Tax Digital for Income Tax Actually Requires
Making Tax Digital for Income Tax (MTD ITSA) replaced the annual Self Assessment cycle for in-scope sole traders and landlords starting 6 April 2026. Instead of compiling everything once a year, you now keep digital records in HMRC-recognised software and send the tax authority a short summary every quarter.
Two things it is not:
- It is not a tax return. A quarterly update is a set of totals — one figure per income and expense category, cumulative within the tax year. You do not send individual invoices, receipts, or bank lines.
- It is not a payment. Your payment dates are unchanged: 31 January and, where payments on account apply, 31 July. Quarterly submissions never trigger a payment.
What you get back is the genuinely new part. After each update, your software shows HMRC's in-year tax estimate — a running forecast of what you are likely to owe. For people who have spent years being surprised every January, that visibility is the practical payoff for the extra filing work.
Who has to comply
| Your qualifying income | MTD becomes mandatory from |
|---|---|
| Over £50,000 | 6 April 2026 |
| Over £30,000 | 6 April 2027 |
| Over £20,000 | 6 April 2028 |
Three details in that table trip people up:
- Qualifying income is gross, not profit. It is your total income from self-employment and property before expenses. A landscaper billing £70,000 and keeping £38,000 after costs is over the threshold. HMRC looks at the money that came in, not what you made of it.
- Self-employment and property income add together. A freelancer with £32,000 of billings and £25,000 of rental income has £57,000 of qualifying income and is in scope now, even though neither source clears the bar alone.
- The trigger is your latest filed return, not a forecast. Your 2024/25 Self Assessment determined whether you were pulled in this April. If you started trading partway through a year, HMRC annualises your income to test the threshold.
Partnerships are expected to be brought into the regime later still. If you trade through a limited company, none of this applies to you yet — corporation tax and payroll operate separately.
What a quarterly update contains
Your software assembles the update from your digital records: totals for each HMRC-fixed income and expense category. The categories themselves are set by HMRC — things like premises, travel, staff costs, and advertising — and your software maps its own chart of accounts onto them. Most people using accounting software with a bank feed simply press a button; HMRC's own case studies describe submissions taking around ten minutes when the underlying records are current.
That last clause is the whole game, and we will come back to it.
The Numbers From the First Deadline
Worth pausing on what actually happened around 7 August, because it calibrates how much urgency your situation deserves:
- 864,000 sole traders and landlords were in scope for April 2026 mandation, per HMRC's pre-deadline announcement.
- 570,000+ had signed up for the service by mid-August.
- 436,000+ had successfully submitted the first quarterly update by the deadline.
So roughly a third of everyone in scope had not even signed up, and about half had not filed. HMRC's Director of Making Tax Digital described the response as encouraging and urged the un-signed-up to act now "rather than waiting for HMRC to sign you up from September" — which is not a casual remark. It is a warning with a date attached.
The government has also confirmed that anyone who missed the first deadline can still submit late through recognised software with no consequences this year. No points, no fine, no letter. The deadline was real; the punishment, for now, is not.
Missed the First Update? Do This Now
Step 1: Confirm you are actually in scope
Work out your qualifying income from your last Self Assessment return: gross self-employment income plus gross property income, before expenses. If it was over £50,000 for 2024/25, you should already be complying. If your income has genuinely collapsed below the threshold, you may be able to stand down — but you need to establish that with records, not wishful thinking.
Step 2: Pick software before you need it
HMRC does not provide software. You must use a commercial product from the recognised list, and the choice is bigger than the big names: several vendors offer free tiers covering exactly what a sole trader or landlord must file — quarterly updates plus the end-of-year declaration. If you are attached to your spreadsheet, the compliant route is "bridging software" that connects it to HMRC's API. A spreadsheet on its own is not compliant, and this is one of the most common false economies in the whole transition.
Step 3: Sign up yourself — do not wait for September
You can sign up on GOV.UK in a few minutes, or have an agent do it. From September 2026, HMRC starts enrolling people who should be using MTD but have not signed up, in stages. Being enrolled automatically is legal, but it is worse than signing up voluntarily: HMRC's stated reason for encouraging self-sign-up is that you ensure your own details are correct and choose your software in your own time, rather than inheriting whatever defaults the enrolment process produces while you are reacting to a letter. Guidance on what to do when a sign-up letter arrives was due in late August; expect the post-deadline advice cycle to intensify.
Exemptions exist — notably for people who are digitally excluded, and a handful of other specific circumstances — but they are narrow, and assuming you qualify is a gamble.
Step 4: Submit the overdue update
This is the step people dread and shouldn't. Open your software, review the quarter 6 April to 5 July 2026, and submit. Because no penalty points apply this tax year, the honest move is simply to file as soon as your records allow. Leaving it un-submitted does not make it disappear; it just stacks the work on top of the second quarter.
Step 5: Get your records current before 5 October
The second quarterly period covers 6 July to 5 October 2026, due 7 November. The worst position to be in on 1 November is three months behind on bookkeeping, because now you are doing the categorisation under deadline pressure. The best position — and this is the entire strategic insight of MTD — is records that are already reconciled, so the update is a ten-minute formality.
Your New Tax Calendar
Write this down; the rhythm is the compliance:
| Obligation | Period covered | Deadline |
|---|---|---|
| Quarterly update 1 | 6 Apr – 5 Jul 2026 | 7 August 2026 (passed) |
| Quarterly update 2 | 6 Jul – 5 Oct 2026 | 7 November 2026 |
| Quarterly update 3 | 6 Oct 2026 – 5 Jan 2027 | 7 February 2027 |
| End-of-year update + final declaration | Full 2026/27 year | 31 January 2028 |
There is no separate fourth update — the final quarter is folded into the end-of-year update and final declaration, which is where you true everything up: adjustments, allowances, and anything you got wrong in the quarterly summaries.
Two more dates deserve bold type. 31 January 2027 is the deadline for your last traditional Self Assessment return, covering 2025/26 — the old world's final outing, and HMRC has confirmed that being in scope of MTD does not excuse you from it. And your payment dates are unchanged throughout: 31 January and 31 July, as before. If you use calendar quarters rather than tax-year quarters (some software defaults to 1 April – 30 June), your deadlines shift to the 7th of the month after each calendar quarter instead.
Penalties: The Grace Period and What Comes After
The 2026/27 tax year is a deliberate soft landing. Miss a quarterly update, miss all four — no penalty points, no £200 fine. But two things are still penalised this year exactly as always: late Self Assessment returns (that 31 January 2027 filing) and late payment of tax, including interest. The amnesty covers late quarterlies, not late money.
From 6 April 2027 the points regime switches on:
- One point per quarterly deadline missed.
- A £200 fixed penalty when you reach four points — which, for quarterly obligations, a year of total non-compliance hits automatically.
- Further £200 penalties for each subsequent late submission while at the threshold.
- Points expire after a sustained period of compliance, so the system rewards getting back on rhythm.
And by April 2027 the second wave arrives anyway: everyone with qualifying income over £30,000 joins the regime. If you are reading this as a "small" landlord or part-time freelancer who assumed MTD was a problem for bigger fish, your deadline is April 2027, and starting the habits now costs a fraction of what a forced scramble later will.
The Records Habits That Make Quarters Painless
MTD's real demand is not the four submissions — it is digital records that are accurate enough to feed them. Which means the businesses that suffer under MTD are not the ones with complicated taxes; they are the ones with a shoebox backlog.
Keep the books continuously, not quarterly
The ten-minute success stories all have the same hidden ingredient: transactions captured and categorised close to when they happen, usually via a bank feed. When records are current, the update is a review-and-submit. When they are not, every quarter becomes a mini-January: three months of reconciliation compressed into a deadline week.
Get your category mapping right early
Because updates are cumulative category totals, a mis-mapped expense repeats itself in every submission until you fix it, then has to be corrected again at the final declaration. Invest one sitting — ideally with your accountant — in checking how your software's categories map to HMRC's fixed set. Most packages handle it automatically, but "most" is doing work in that sentence, and nobody else can see your mappings but you.
Understand the cash basis default
Since 2024/25 the cash basis has been the default for most sole traders: income counts when it lands, expenses count when they leave the account. For a typical service business this is simpler and defers tax on unpaid invoices. It is not right for everyone — businesses holding significant stock or work-in-progress often prefer accruals — and opting out requires an election rather than silence. Landlords should check which basis their property income is on before assuming anything, because it changes which quarter a transaction belongs to.
Treat the in-year estimate as a steering wheel
The tax estimate you see after each update is a forecast, not a bill — it assumes the year continues like the quarter you just filed. Its value is steering: if the August estimate is climbing past what you have set aside, you have five months to adjust before the January payment, instead of five days. Businesses that bank the estimate into a monthly habit of reserving a fixed share of revenue are the ones reporting the least MTD stress.
The mistakes worth naming
- Confusing profit with qualifying income and assuming you are out of scope.
- Running MTD on a spreadsheet with no bridging software.
- Waiting for HMRC's enrolment letter instead of signing up and choosing your own tools.
- Letting the year-one amnesty lull you into skipping updates — the records debt still compounds, and 2027/28 arrives with points switched on.
- Ignoring the in-year estimates until the payment on account is already locked in.
Keep Your Records Ready Every Quarter
The through-line of everything above is that Making Tax Digital rewards one specific discipline: bookkeeping that happens continuously, in a system you control, with numbers you can inspect. Quarterly filings are only painless when the underlying records are clean, current, and yours to verify.
That is exactly the philosophy behind Beancount.io's plain-text accounting — your books are readable, version-controlled files rather than a locked database, so every figure in a quarterly update is traceable to a transaction, every change is auditable, and the whole ledger is ready for whatever HMRC (or your accountant) asks next. If the move to digital records is your moment to rebuild how you track the business, the documentation is a good place to start.