The quarterly update is the beating heart of Making Tax Digital — and the part most surrounded by myth. It is not a mini tax return. Nothing is due with it. Nobody rings you about it. It is a running digital summary of your business income and expenses, and once your records are clean it takes minutes.
Here is exactly how the cycle works: the dates, what is actually in an update, what happens when you find an error, and the traps (multiple businesses, the calendar-quarter election) that catch people in year one.
The Dates That Matter
| Quarter | Standard period | Deadline |
|---|---|---|
| Q1 | 6 April – 5 July | 7 August |
| Q2 | 6 April – 5 October | 7 November |
| Q3 | 6 April – 5 January | 7 February |
| Q4 | 6 April – 5 April (full year) | 7 May |
Notice the periods are cumulative — each update covers the tax year so far, not just the latest three months. If you prefer tidy month-ends, a calendar-quarter election lets you report 1 April – 30 June and so on; the deadlines stay identical. After Q4 you still complete the year-end final declaration by 31 January, where reliefs, allowances and other income are added and your tax is finalised. Payment dates do not move.
What Is Actually In an Update
Totals, not transactions. Your software sends HMRC the year-to-date sum of income and the sum of expenses by category for the business — the standard self-employment categories (cost of goods, wages, premises, motor, professional fees…) or the property equivalents. No receipts, no narrative, no tax calculation. HMRC responds with an estimated tax position, which is genuinely useful for putting money aside.
Behind those totals, though, you must hold transaction-level digital records — that is what makes the totals defensible if HMRC ever looks.
Corrections: The Cumulative Safety Net
Found a missed expense from May in November? Because every update is cumulative, you simply include the correction in your next update — the year-to-date figures overwrite what came before. There is no formal amendment process for a past quarter and no penalty for an honest figure revised later. The system is genuinely forgiving here; the discipline it does demand is that your records stay complete.
One Cycle Per Business
Updates are filed per business. A sole trade is one business; all your UK rental property together is another; foreign property a third. A consultant-landlord therefore owes eight updates a year — two parallel cycles with the same four deadlines. Miss one business's update and it earns its own penalty point, even if the other was on time.
The Efficient Quarterly Routine
- Shortly after the quarter ends, download the quarter's bank statements (PDF or CSV).
- Convert them automatically into a categorised spreadsheet with BankScan AI — dates, amounts and suggested categories in seconds, no retyping (which would break the digital-link rule).
- Review the categories — five minutes for most one-person businesses.
- Feed the totals into your HMRC-recognised MTD software and submit before the 7th.
Done four times a year, this is a coffee-break job. The people who suffer under MTD are the ones reconstructing six months of records the night before the deadline — exactly the habit the sole trader guide and landlord guide are designed to prevent.
A Quarter's Records in Minutes, Not Evenings
Each update is only as painful as your records. Upload the quarter's bank statements and get back a clean, categorised spreadsheet in seconds — free first conversion, no signup.
Try BankScan AI Free →Frequently Asked Questions
Do I pay tax with each quarterly update?
No. Updates carry information only — cumulative income and expense totals. Tax is calculated and paid on the existing timetable: the final declaration and balancing payment by 31 January, plus payments on account where applicable. HMRC does return an estimated tax figure after each update, which helps you save ahead.
What if I have no income or expenses in a quarter?
You still submit — a nil (or unchanged cumulative) update. Quiet quarters do not remove the obligation, and skipping one earns a penalty point like any other missed deadline.
I made a mistake in a previous quarter — how do I fix it?
Include the correction in your next cumulative update; the year-to-date totals simply supersede the earlier ones. No amendment filing, no penalty for an honestly revised figure. Anything still wrong at year end is corrected in the final declaration.
Can I align quarters to calendar months?
Yes — the calendar-quarter election moves your periods to 1 April–30 June and so on, which suits businesses that reconcile at month-end. Deadlines are unchanged (7 August, 7 November, 7 February, 7 May). Choose once and stay consistent.
Do quarterly updates replace the tax return entirely?
The four updates replace the in-year reporting, and the final declaration replaces the Self Assessment return itself — that is where employment income, dividends, reliefs and allowances are added and the year is finalised by 31 January.
Last updated: 9 July 2026. This guide explains the Making Tax Digital rules as published by HMRC — always check GOV.UK for the latest official guidance. Read our MTD bank statement compliance guide or browse all blog posts.