Missed a quarterly update deadline?
30-second answer
If you've missed a quarterly update deadline, there is nothing to undo and nothing to explain. Quarterly updates are cumulative, which means every update you send is a running total for the tax year so far, not a report on one quarter in isolation.
So one submission catches you up. Bring your spreadsheet up to date, submit, and the missed quarter is covered. It doesn't matter whether you missed one deadline or all four.
You also don't have to wait until the end of the current quarter to do it. A submission made today covers the tax year up to today, and once that reaches past a quarterly period end date, HMRC treats that quarter as met.
And for the 2026/27 tax year there are no penalty points for a late quarterly update anyway. Straight to the fix? Go to what should I do now? Want to understand why one submission is enough? Start at why one submission catches you up.
This guide is most relevant if you are:
- Past a quarterly update deadline and worried you've done something that can't be fixed
- Behind on your record keeping and unsure whether it's now too late to catch up
- Wondering whether you need to send a separate update for each quarter you've missed
This guide covers
This guide is provided for general information only and is based on HMRC guidance available at the time of writing.
Considerably less than most people brace for. The deadline passes, and the obligation simply stays open on your HMRC record until a submission arrives that covers it. Nothing is triggered, nothing is closed off, and nothing is lost.
Worth being clear about what a missed quarterly update is not:
- It is not a missed tax return, and no tax has become due
- It doesn't need a phone call, a letter or an explanation to HMRC
- It doesn't lock you out of the quarter, or force you to wait for the next one
- For the 2026/27 tax year, it doesn't earn you a penalty point
There's a reason the consequences are mild. A quarterly update isn't a mini tax return. It carries no declaration, it isn't a calculation of tax owed, and nothing about it is final. It's a set of running totals, and the whole system is built on the assumption that those totals will be sent again, and again, as the year goes on.
In short
A missed quarterly update is a gap in your reporting, not a black mark on your record. The gap closes the moment you send an up-to-date submission.
This is the single most useful thing to understand about Making Tax Digital, and it's the thing almost nobody is told plainly: quarterly updates are cumulative.
Each update you send is a year-to-date total for that income source. Not the three months just gone. Everything from the start of the tax year up to the point you're reporting to.
So the figures build like this, using a simple example of a sole trader with steady income:
- First update: income and expenses from 6 April to 5 July
- Second update: income and expenses from 6 April to 5 October, so the first three months are in there again
- Third update: 6 April to 5 January
- Fourth update: 6 April to 5 April, the whole year
Each one contains everything the one before it contained. Which leads to the point that matters when you're behind: a later submission already includes the earlier ones. If you never sent the first update, the second one contains that data anyway, because it starts from 6 April regardless.
That's why catching up isn't a matter of filing four things. It's a matter of filing one thing that happens to be up to date.
The way to picture it
Think of it like the balance on your bank account rather than a monthly statement. The balance is always everything that's happened since the start, so checking it late still tells you the whole story. Nothing is lost by not having looked in July.
A lot of the anxiety around missed deadlines comes from mixing up two different dates. Separate them and the whole thing gets simpler.
The most useful way to hold it in your head:
- The quarterly period end date tells you the minimum amount of data that needs to be in your submission
- The quarterly due date tells you the date it needs to be submitted by
They're doing completely different jobs. One is about coverage, the other is about timing. Miss the due date and the coverage requirement doesn't change at all. HMRC still just needs a submission that reaches at least as far as the period end date.
The standard dates
- Period ending 5 July — due 7 August
- Period ending 5 October — due 7 November
- Period ending 5 January — due 7 February
- Period ending 5 April — due 7 May
If you've elected to report to calendar quarters instead, your period end dates become 30 June, 30 September, 31 December and 5 April. The due dates stay exactly the same.
Notice how much room that leaves. The first quarter ends on 5 July and isn't due until 7 August, which is a month of slack built into the system before you're even late.
This is the part people get stuck on. Having missed a deadline, they assume they're now sitting in limbo until the next quarter finishes and the next window opens. You aren't. You can catch up today.
Here's the mechanism. When you submit, the period your figures cover runs from the start of the tax year up to one of two dates, whichever comes first:
- Today's date, if the quarter you're in hasn't finished yet
- The quarter's end date, if that quarter has already finished
And here's the useful consequence. If HMRC receives a submission covering a period that runs past a quarterly period end date, that quarter's obligation is treated as met. The data covering it has arrived, which is all the obligation ever asked for.
A worked example
You're a sole trader. The first quarter of 2026/27 ended on 5 July and was due by 7 August. You missed it, and it's now late August.
You bring your spreadsheet up to date and submit. Your figures cover 6 April to today's date, because you're partway through the second quarter and it hasn't ended yet.
Today's date is past 5 July. So the first quarter is fully covered, and that obligation is met. You've also made a genuine head start on the second quarter, which you'll simply submit again nearer 7 November with whatever has happened in between.
The awkward bit is your spreadsheet, not the submission. Your figures need to be genuinely up to date, because what you send is a snapshot of your records as they stand. The free suiteSheets template handles the arithmetic for you, calculating the year-to-date cumulative totals correctly whatever date you submit on.
The answer doesn't change, which is the nicest thing about the cumulative design. One submission still catches you up.
Two missed quarters, three missed quarters, the whole year: an up-to-date submission covers all of the period end dates that have already passed, so all of those obligations are met at once. There is no queue to work through and no order to do things in.
The work involved scales with how far behind your records are, not with how many deadlines you've missed. Someone who has kept a tidy spreadsheet all year and simply forgot to press submit three times is about ten minutes away from being fully up to date.
Why to do it sooner rather than at the end of the year
It's technically possible to leave everything until the final submission. It's a bad idea for two reasons that have nothing to do with penalties.
- The bookkeeping doesn't disappear, it just piles up. Nine months of receipts in one sitting in January is a considerably worse afternoon than three months of them in August
- Your tax return can't be submitted until your quarterly updates are done. So a backlog doesn't sit quietly in the background. It sits directly in front of the one deadline that does earn a penalty point
The quarterly rhythm exists to stop January being what it used to be. Catching up now is how you keep that benefit.
A close cousin of the missed deadline: you did submit, but you've since found an invoice you'd forgotten, or a batch of expenses that never made it into the spreadsheet.
There's no correction process to learn, because the cumulative design does the correcting for you. You update your spreadsheet with the right figures and submit again. The new year-to-date totals replace the old ones, and the earlier mistake stops existing.
A few things worth knowing alongside that:
- Quarterly updates carry no declaration that the figures are complete and correct, unlike your tax return
- Inaccuracy penalties don't apply to quarterly updates. They apply to your tax return, which is where you confirm your final position
- Your quarterly figures don't calculate your tax bill. Nothing becomes payable off the back of them
So the honest guidance is to submit your best current figures rather than delay while you chase a missing receipt. A submission you tidy up later is worth far more than a perfect one that never gets sent.
The first year of Making Tax Digital comes with a deliberate concession on late quarterly updates, on the reasonable basis that everyone is learning a new routine at once.
- If you were required to join from April 2026: late quarterly updates earn no penalty points for the 2026/27 tax year. Points start counting from the following tax year
- If you volunteered: late quarterly updates earn no penalty points at all while you're volunteering
That is genuine breathing room, and it's the reason a missed deadline this year is a scheduling problem rather than a financial one.
The part that isn't soft
Your tax return is outside the concession. Miss the 31 January deadline and you get a penalty point straight away, in the first year and every year after.
Late payment penalties aren't affected either. They're unchanged by the soft landing and they start biting at 15 days.
For the full picture, including penalty point thresholds and the late payment percentages, see our guide to the HMRC letter about new MTD penalties.
Quarterly updates are per income source, not per person. A sole trader who also lets a flat has two sets of obligations running in parallel, on the same dates.
Catching up works exactly the same way, just once for each source. One cumulative submission for the business, one for the property. Each covers its own year to date, and each closes its own missed periods.
Two small things that follow from that:
- Multiple UK properties are a single property business for reporting, so they're covered by one submission between them, not one each
- If you were required to join MTD and you miss a deadline with several income sources outstanding, you only ever collect one penalty point for that deadline, not one per source
When you're catching up, it's worth checking each source in turn rather than assuming a submission for one has covered the other. They're tracked separately at HMRC's end.
Four steps, and only one of them takes any real time.
- Bring your spreadsheet up to date. Everything from 6 April to today, for each income source. This is the actual work. The rest is clicking
- Submit. Your figures cover the tax year up to today, so every period end date that has already passed is covered in one go
- Check each income source separately. If you have a business and a property, that's two submissions
- Put the remaining deadlines in the diary. 7 August, 7 November, 7 February and 7 May, plus 31 January for your tax return, which is the one that counts
That's it. There's no form to complete, no reason to contact HMRC, and nothing to explain. The submission itself is the whole remedy.
And if being behind has left you wondering whether you need to abandon your spreadsheet for proper accounting software, you don't. A spreadsheet is a digital record, and bridging software connects it to HMRC.
suiteSheets is HMRC-recognised bridging software built for people whose records already live in a spreadsheet. Catching up doesn't mean adopting a new system, and it doesn't mean re-entering a year of transactions somewhere else.
- Download our free template, or add our Overview sheet to the spreadsheet you already use
- Bring your income and expenses up to date
- Upload and submit. Your figures go to HMRC covering the tax year to date, and every missed period end date behind you is covered by that one submission
The template does the cumulative arithmetic for you, so you don't have to work out what a year-to-date total should be on any given date. You keep your records the way you always have, and the year-to-date figures fall out of them correctly.
Quarterly submissions are £20 per tax year for your first income source, covering every update for that year, with unlimited resubmissions included. That matters when you're catching up: submitting your best current figures and refining them later costs you nothing extra. Your end of year tax return is priced separately at £15.
The obligation stays open on your HMRC record until a submission arrives that covers it. There's nothing to undo, no form to complete and no need to contact HMRC. Bring your spreadsheet up to date, submit, and the missed period is covered. For the 2026/27 tax year there's no penalty point for a late quarterly update.
No. Quarterly updates are cumulative, so each one is a running total from the start of the tax year rather than a report on one quarter alone. A single up-to-date submission already contains the data that any earlier updates would have contained, so it covers every missed period end date at once.
No. If the quarter you're in hasn't ended yet, your submission covers the tax year up to today's date. Because today's date is past the end date of the quarter you missed, that quarter is fully covered and its obligation is met. You can catch up the moment your records are up to date.
It means every update is a year-to-date total for that income source, not a figure for the three months just gone. Your second update covers 6 April to 5 October, including the months already reported in the first one. Each submission supersedes the one before it, which is why a later submission covers earlier periods automatically.
No. One cumulative submission covers every period end date that has already passed, however many you've missed. The work involved depends on how far behind your records are, not on how many deadlines have gone by. There's no queue to work through and no particular order to follow.
Not for the 2026/27 tax year. If you were required to join MTD from April 2026, late quarterly updates earn no penalty points for that first tax year. If you volunteered, they earn no points at all while you're volunteering. Your tax return is different: missing the 31 January deadline earns a point straight away.
Correct your spreadsheet and submit again. The new year-to-date totals replace the previous ones, so there's no separate correction process. Quarterly updates carry no declaration and inaccuracy penalties don't apply to them, so it's better to submit your best current figures than to delay while you chase a missing receipt.
Yes, just once for each source. Quarterly updates are per income source, so a sole trader who also lets property makes one cumulative submission for the business and one for the property. Multiple UK properties count as a single property business, so they're covered by one submission between them.
No. Quarterly updates don't calculate tax and nothing becomes payable off the back of them. Your tax is worked out from your tax return, due 31 January after the end of the tax year, and paid then. A missed update has no effect on what you owe or when you owe it.
It's technically possible in 2026/27, but it's a poor idea. The bookkeeping doesn't disappear, it just concentrates into January, and your tax return can't be submitted until your quarterly updates are done. So a backlog ends up sitting directly in front of the one deadline that does earn a penalty point.
This guide is provided for general information only. suiteSheets is software for spreadsheet users. We do not provide tax advice, accounting advice or legal advice. If you are unsure how these rules apply to your circumstances, contact HMRC or a qualified adviser.
HMRC publishes separate penalty guidance for volunteers and for people required to use Making Tax Digital, so it's worth checking the page that matches your situation. It's also worth checking GOV.UK for the latest position.
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