How to keep digital records up to date quarterly

Making Tax Digital for Income Tax requires sole traders and landlords to keep digital records of their self-employment and property income and expenses. On top of an annual tax return, your client must update HMRC every three months using compatible software.

This guide covers what a digital record is, what you need to capture, and how to keep it current for every quarterly update.

No credit card required. Reading time: 7 minutes.

MTD IT Guide cover

Key Takeaways

A digital record needs three things per transaction: the amount, the date, and the Self Assessment category.

Quarterly updates are cumulative – each one restates the year to date, so mistakes correct themselves in the next update.

HMRC only receives category totals. No receipts, no invoices, no adjustments, no tax calculation.

Deadlines are the 7th of August, November, February and May. Submission windows open 10 days before each period ends.

A client with both a sole trade and a rental property files eight quarterly updates a year, not four.

WHO'S AFFECTED

Who needs to comply with MTD for Income Tax?

From 6 April 2026, MTD for Income Tax applies to sole traders and landlords with combined gross income over £50,000. This threshold drops to £30,000 from April 2027 and £20,000 from April 2028 – so more clients will be brought into scope each year, even if their income hasn't changed.

THE BASICS

What counts as a digital record?

A digital record is your client’s transaction data, including date, amount, category, that is stored using software that complies with Making Tax Digital for Income Tax. Paper records do not meet HMRC's requirements once a taxpayer is mandated by MTD IT.

For each transaction, you must record three pieces of information:

The amount received or incurred

The date on which it was received or incurred

The category – using the same income and expense categories as Self-Assessment

Pro Tip: Paper records don't count once your client is mandated. A shoebox of receipts can still support the numbers, but the record HMRC requires has to live in compatible software.

SCOPE

Which income and expenses must be recorded digitally?

MTD for Income Tax covers self-employment and UK property business income and expenses. HMRC never sees individual receipts or invoices – only the category totals in each quarterly update.

Self-employment income and expenses

Digital records must cover:

The amount received or incurred

The date on which it was received or incurred

UK property income and expenses

Digital records must cover:

The amount received or incurred

The date on which it was received or incurred

Several properties still make one business. If your client has more than one UK property, all of them are treated as a single UK property business. Your software adds the records together into one quarterly update.

MTD IT TOOLING

Choosing compatible software

Acting for a client as their accountant or bookkeeper, you must use software recognised by HMRC for Making Tax Digital for Income Tax. HMRC doesn't provide its own software, but there's a range of free and paid options. They fall into four groups.

All-in-one products

Handle record-keeping, quarterly updates and finalisation in one place.

Where Dext Solo sits

Quarterly specialists

Do the record-keeping and quarterly updates, and hand off to your existing finalisation software.

Embeded banks

Business bank accounts that also file the quarterly update for you.

Bridging software

Connects existing spreadsheet records to HMRC.

Using more than one product? The link has to be digital

If you or your client uses more than one software product, you must digitally link them. Figures cannot be rekeyed – you can't manually re-enter data between products.

COUNTS AS DIGITAL LINK

Sending figures between products via API

Exporting from one product and importing into the other

DOESN'T COUNT

Typing figures from one product into another

Copying and pasting figures between spreadsheets

CADENCE

How often do records need updating?

What HMRC encourages

As close to real time as possible

Little and often keeps data clean and turns the quarterly update into a review rather than a rebuild.

The actual requirement

Before the update is submitted

The minimum is that digital records are entered into your software before the quarterly update for that period is submitted.

QUARTERLY UPDATE PLANNER

Every date your client's quarterly updates depend on

By default, update periods follow the tax year. If your client's record-keeping period ends on 31 March rather than 5 April, you can choose calendar update periods instead. Switch between the two to see how the year plays out.

Standard Periods

Update period

Submission deadline

6 April to 5 July

7 August

6 April to 5 October

7 November

6 April to 5 January

7 February

6 April to 5 April

7 May

Each update covers income and expenses from the start of the tax year to the end of that update period, not just the most recent three months. You and your client’s chosen software calculates these cumulative totals for you.

Calendar Periods

Update period

Submission deadline

1 April to 30 June

7 August

1 April to 30 September

7 November

1 April to 31 December

7 February

1 April to 31 March

7 May

If your recording-keeping period ends on 31 March rather than 5 April, you can choose calendar update periods.

You must select calendar update periods for your client in your software before you send your first quarterly update. You cannot change this setting after your first update has been submitted for that tax year.

CORRECTING ERRORS

Each update restates the year to date

If you spot a mistake after submitting a quarterly update, you or your client do not need to resend the original update. Because each update covers the full period from the start of the tax year, corrections are automatically included in the next quarterly update.

LESS THAN YOU THINK

What a quarterly update doesn't need

Quarterly updates are deliberately light. Only category totals are submitted.

No individual receipts or invoices

Nothing document-level is sent to HMRC.

No accounting adjustments

Adjustments belong at finalisation, not in the quarterly update.

No tax calculation needed

Your client doesn't need to work out any tax before sending an update.

MULTRIPLE INCOMES SOURCES

How many updates will your client actually file?

Dext is built for practices that need more than the basics - combining accuracy, intelligence, and end-to-end workflows in one platform.

Self-employment

5

submissions a year

4 quarterly updates

+ 1 Final Declaration

UK property

5

submissions a year

4 quarterly updates

+ 1 Final Declaration

Both sources

9

submissions a year

8 quarterly updates

+ 1 Final Declaration

IF A DEADLINE SLIPS

What happens if you miss a quarterly deadline?

If your client doesn't submit their quarterly update by the relevant deadline, they may receive a late submission penalty point. A £200 penalty is applied once the penalty point threshold is reached.

FILLING PATTERN

POINTS THRESHOLD

PENALTY AT THRESHOLD

Standard quarterly filers

4 penalty points

£200

There's a soft landing for 2026 to 2027. HMRC has confirmed that penalty points will not be applied for late quarterly updates for taxpayers entering MTD for IT in the 2026 to 2027 tax year. Points for a late tax return still apply.

Pro tip: All four updates must be in before finalisation. You cannot submit your client's Final Declaration until every quarterly update for the year has been submitted.

HMRC-RECOGNISED MTD SOFTWARE

How Dext helps you keep digital records

Dext Solo is HMRC-recognised MTD for Income Tax software. It collects and categorises client data, then submits quarterly updates directly to HMRC – working alongside your firm's existing tax software rather than replacing it.

Built for sole traders and landlords, not scaled down from full accounting software

Automation for CIS, disallowable expenses and rental income

Works with your finalisation software, or on its own


FAQ

Digital records: your questions answered

Get your clients' records ready

Dext Solo handles the hard part – getting accurate data in, fast and at scale – so quarterly updates become a review rather than a scramble.


New to Dext?

Sign up free, add your first clients and have your quarterly filing workflow live before the next deadline. No setup fee, no onboarding call required.

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Already a Dext partner?

Dext Solo sits alongside your current Dext subscription. Contact your account manager today and have your MTD for Income Tax clients set up straight away.

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We estimate that at least 30 seconds are saved per invoice in terms of data entry. When compared to the old manual process, Dext saves us about 20 hours a week. ”

Brian Zhao, Co-Founder, Harvest Accounting

KEEP GOING

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