Your MTD First Quarterly Update: What Actually Happens
Confused about your MTD first quarterly update due date? Here's exactly what to submit, when to submit it, and what happens if you get it wrong.
If you become mandated for Making Tax Digital for Income Tax in April 2026, your very first quarterly update will be due by 7 August 2026. Not January. Not the end of the tax year. Seven weeks into summer, while you are probably flat out on jobs.
That is the date most sole traders do not know exists until it is almost too late.
- Your first MTD quarterly update covers 6 April to 5 July 2026 and is due by 7 August 2026.
- Quarterly updates are not tax payments; they are digital submissions of your income and expenses for each quarter.
- Missing your first submission triggers one late-filing penalty point under HMRC's new points-based system.
- You need HMRC-recognised software to submit; you cannot file quarterly updates through the HMRC website directly.
- The End of Period Statement and Final Declaration still come later in the year, so the first quarterly update is just the beginning.
- MTD First Quarterly Update
- The first of four mandatory digital submissions required under Making Tax Digital for Income Tax Self Assessment (MTD ITSA). It covers income and expenses from 6 April to 5 July in the first year of mandation, with a filing deadline of 7 August. It does not trigger a tax payment; it simply updates HMRC's real-time view of your trading income.
The Quarterly Calendar Nobody Shows You
HMRC's communication about Making Tax Digital has been, to put it charitably, thorough on the broad strokes and thin on the operational detail. You will find plenty of guidance confirming that quarterly updates are required. You will find considerably less that tells you precisely when your first one lands.
Here is the full picture for a sole trader mandated from April 2026, laid out plainly.
The tax year runs 6 April to 5 April as always. MTD divides it into four quarters:
- Quarter 1: 6 April to 5 July, due 7 August
- Quarter 2: 6 July to 5 October, due 7 November
- Quarter 3: 6 October to 5 January, due 7 February
- Quarter 4: 6 January to 5 April, due 7 May
There is also an option to use calendar month quarters (ending 31 March, 30 June, 30 September, 31 December) if your software supports it and you elect for this at sign-up. The deadlines shift slightly under that approach, but the first update is still due in early August.
For most tradespeople and freelancers joining MTD on day one, the first quarterly update due date of 7 August 2026 is the one to tattoo somewhere visible.
What You Are Actually Submitting
This is where a lot of confusion sets in. A quarterly update is not a tax return. It is not a tax payment. It does not settle your bill with HMRC.
What it is: a digital summary of your income and allowable expenses for the quarter, submitted through MTD-compatible software directly to HMRC's systems. Think of it as a running commentary on your trading activity, rather than a final reckoning.
HMRC uses this data to build a real-time picture of your tax position. In theory, this means fewer nasty surprises in January. In practice, it means you need to be keeping digital records consistently throughout the quarter, not scrambling through a shoebox in July.
The submission itself typically includes:
- Total income received in the quarter
- Categorised expenses (materials, travel, professional fees, and so on)
- Any allowances you are claiming
You do not need to include every individual receipt in the submission, but you must hold those records digitally in case HMRC asks. This is the "digital record-keeping" requirement that sits alongside the submission obligation.
What the First Update Does NOT Include
Several things happen later in the year and are worth separating cleanly from the first quarterly update:
End of Period Statement (EOPS): Submitted once per tax year, after the fourth quarter. This is where you make accounting adjustments and confirm your figures are correct.
Final Declaration: Replaces the old Self Assessment tax return. You declare all income (including any non-trading income like savings interest or property income), claim reliefs, and confirm everything is accurate. This triggers your tax bill. The deadline for the Final Declaration is 31 January following the end of the tax year, the same date Self Assessment currently uses.
So the honest picture is this: MTD does not replace January. It adds August, November, and February to it. Whether that feels like progress is a matter of perspective.
Why August Catches People Out
January is psychologically loaded for sole traders. Everyone knows it is coming. Calendar reminders, accountant nudges, and a general sense of dread keep it front of mind.
August has none of that infrastructure. For most tradespeople, August is peak season. Demand is high, days are long, the last thing on your mind is logging onto government-approved software to submit a quarterly income summary.
HMRC's own research, cited in its MTD impact assessments, acknowledges that the compliance burden falls disproportionately on smaller businesses. The Institute of Chartered Accountants in England and Wales (ICAEW) has repeatedly flagged that many sole traders below the £50,000 threshold have little awareness of the quarterly obligations, let alone the specific due dates.
For a sole trader turning over £60,000 a year, missing the first quarterly update due date is not merely inconvenient. Under HMRC's points-based penalty system (introduced alongside MTD), each late submission earns one penalty point. Accumulate four points and you face a £200 fine, plus £200 for every subsequent late submission. Miss all four quarters in your first year and you are at the threshold immediately.
If the points system is new to you, the post MTD Penalty for Late Submission: The Points System Exposed covers the mechanics in detail.
The Software Dependency Problem
Here is a structural issue that HMRC has been remarkably quiet about: you cannot submit quarterly updates through the HMRC website. There is no government portal where you log in, type some numbers, and press submit. HMRC deliberately chose not to build one, a decision that effectively mandates the use of third-party software.
This matters for your first quarterly update in a practical sense: if you have not set up MTD-compatible software before 6 April 2026, you will be behind before you have even started. The software needs to be linked to your HMRC account through the Government Gateway, your business income needs to be categorised correctly, and the data for Quarter 1 needs to be accumulating from day one of the tax year.
There are free options and paid options. The free landscape is thinner than HMRC implies; most genuinely free tools are limited in functionality or require an upgrade for full MTD submission. The post Free MTD Software UK: What Exists and What It Costs You is worth reading before you commit to anything.
For sole traders who want something designed specifically for the quarterly submission workflow rather than a full accounting suite, tools built around MTD simplicity (TapTax among them) are worth comparing against the feature-heavy alternatives. See TapTax vs FreeAgent: Which Wins for Sole Traders? and TapTax vs Xero: Which One Actually Fits a Sole Trader? for a side-by-side view.
A Concrete Scenario: Marcus the Electrician
Marcus is a self-employed electrician based in the East Midlands. He turns over £68,000 a year. Under MTD's April 2026 mandation (which applies to sole traders with income above £50,000), he is in from day one.
Here is what his first year of MTD actually looks like in practice:
April to July 2026: Marcus needs to be logging income and expenses digitally as he goes. He does 14 jobs in April, invoices clients on a spreadsheet, and pays for materials on a business card. Under MTD, this needs to flow into his MTD software in real time, or at least before 7 August.
7 August 2026: First quarterly update due. Marcus submits Quarter 1 figures through his MTD software. No tax is owed. No payment leaves his account. HMRC now has a digital snapshot of his April-to-July trading.
7 November 2026: Quarter 2 submission. Same process.
7 February 2027: Quarter 3 submission.
7 May 2027: Quarter 4 submission.
By 31 January 2028: Marcus completes his End of Period Statement and Final Declaration, confirming his full-year figures and paying the tax owed.
The difference from Self Assessment is not that Marcus pays more tax. It is that HMRC now has four data points on his income throughout the year, and Marcus has four deadlines to manage instead of one.
For someone already organised, this is manageable. For someone who currently does their Self Assessment in a Sunday-afternoon panic in January, it requires a genuine behavioural shift.
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Three Things to Do Before Your First Due Date
If you are mandated from April 2026, you have a window between now and 6 April to get ready. Three actions will prevent the first quarterly update from ambushing you.
1. Choose and Set Up Your Software Now
Do not wait until March. MTD software needs to be authorised with HMRC, and that process involves signing in via Government Gateway, granting permissions, and linking your Unique Taxpayer Reference. Leave it until the week before and you will be fighting the system when you should be starting to log April's income.
Check HMRC's list of recognised software at gov.uk/guidance/find-software-thats-compatible-with-making-tax-digital-for-income-tax. Verify it covers quarterly submissions (not just record-keeping), and that it works for your business type.
2. Start Categorising Expenses Now
The quarterly update requires expenses to be categorised (materials, subcontractors, motor costs, etc.). If you are currently putting everything through a single "business expenses" bucket, now is the time to change that habit. Software that forces categorisation at the point of entry is considerably less painful than reconciling three months of miscellaneous transactions the week before 7 August.
For a reminder of which expenses you can legitimately categorise, Sole Trader Expenses You Are Probably Forgetting to Claim is a useful reference.
3. Set a Reminder for 7 August, Not 31 January
This sounds almost insultingly simple. Do it anyway. August has no natural tax-admin cues. Your accountant may or may not chase you. HMRC will not send you a letter in July saying "don't forget". Put it in your phone calendar now, with a two-week warning on 24 July, so you have time to pull the data together without panicking.
The Larger Point
MTD for Income Tax is not principally about collecting more tax. HMRC is explicit that the goal is to reduce the tax gap (currently estimated at £39.8 billion annually, per HMRC's own 2022/23 tax gap publication) through better data and fewer errors. Whether quarterly digital submissions actually achieve that for sole traders earning £50,000 to £80,000 is a genuine question, and one worth scrutinising. But the policy is real, the deadlines are fixed, and the penalties for non-compliance are not.
The first quarterly update due date of 7 August 2026 is the one that will catch the most people by surprise. It arrives in the middle of summer, with no cultural infrastructure around it, and it comes before most sole traders have fully absorbed that their tax life has changed.
Knowing it exists, and knowing exactly what it asks of you, is most of the battle. Start there.
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