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Making Tax Digital UK: The Complete 2026/27 Guide for Sole Traders & Landlords

By Remus Pantea · 19 March 2026 · 12 min read

Making Tax Digital (MTD) is HMRC's plan to move the UK tax system online. MTD for VAT has been running since 2019. Now comes the bigger change: MTD for Income Tax Self Assessment (MTD for ITSA), which affects millions of sole traders and landlords.

If you file a Self Assessment tax return and have self-employment or property income, this will affect you. The only question is when.

Who is affected and when

MTD for Income Tax rolls out in two phases based on your qualifying income — your gross turnover from self-employment plus gross property income, before expenses:

Start date	Who it applies to	Based on
6 April 2026	Income over £50,000	2024/25 Self Assessment return
6 April 2027	Income over £30,000	2025/26 Self Assessment return
To be confirmed	Income over £20,000	Date not yet announced

What MTD requires you to do

MTD for Income Tax has three core obligations:

1. Keep digital records: Your income and expense records must be maintained digitally using HMRC-recognised software. Paper records and standalone spreadsheets alone are not sufficient.
2. Submit quarterly updates: Every three months, you send a summary of your income and expenses to HMRC through your software. This is not a tax return — it's a progress report.
3. Submit an End of Period Statement (EOPS) and final declaration: After the tax year ends, you confirm your figures are complete and submit your final declaration — this replaces the Self Assessment tax return.

Quarterly update deadlines

Each tax year is split into four quarters. After each quarter ends, you have until the following deadline to submit:

Quarter	Period covered	Submission deadline
Q1	6 April – 5 July	7 August
Q2	6 July – 5 October	7 November
Q3	6 October – 5 January	7 February
Q4	6 January – 5 April	7 May

The End of Period Statement and final declaration are due by 31 January following the end of the tax year — the same deadline as the current Self Assessment return.

What counts as "digital records"

HMRC requires you to record the following digitally for each transaction:

• Date of the transaction
• Amount
• Category (matching HMRC's income/expense classifications)

For expenses, you should also record:

• Name of the supplier
• VAT amount (if VAT registered)
• A description or note of what was purchased

You do not need to send individual receipts to HMRC with your quarterly updates. But you must keep the underlying records (digital photos of receipts, bank statements, invoices) for at least five years in case of an enquiry.

What software do you need?

You need software that is both:

1. HMRC-recognised — listed on HMRC's official software page as compatible with MTD for Income Tax
2. Capable of digital record-keeping and submission — can store your records and send quarterly updates and final declarations to HMRC via their API

Major providers include FreeAgent, Xero, QuickBooks, Sage, and others. HMRC maintains an updated list of compatible software on GOV.UK.

Many sole traders will use a combination: a record-keeping app for capturing receipts and logging expenses day-to-day, plus MTD submission software (or an accountant's software) to file the quarterly updates.

Penalties for non-compliance

HMRC is introducing a new points-based penalty system for MTD (replacing the old flat penalties):

Late submission penalties

• You receive 1 point for each late quarterly update
• Once you reach 4 points (i.e. four late submissions), you receive a £200 penalty
• Each subsequent late submission while at the threshold also triggers £200
• Points expire after 24 months of on-time submissions

Late payment penalties

• Tax unpaid after 15 days: penalty of 2% of tax owed at that date
• Tax unpaid after 30 days: a further 2% of tax still outstanding
• Tax unpaid after 30 days: additional daily penalty at 4% per annum on the outstanding amount

Interest on late payments

HMRC charges interest on overdue tax at the Bank of England base rate plus 2.5%. As of April 2026, that's approximately 7% per annum.

What about VAT-registered sole traders?

If you're already filing MTD for VAT, you know the quarterly reporting process. MTD for Income Tax is separate — you'll need to submit VAT returns and income tax quarterly updates. The good news is that most MTD-compatible software handles both.

Your digital records for income tax can overlap with your VAT records, but the submissions are to different HMRC systems.

What if I use an accountant?

Your accountant can submit quarterly updates and the final declaration on your behalf using agent software. But the obligation to keep digital records is yours. You cannot hand your accountant a carrier bag of receipts once a year and expect them to sort it out quarterly.

The most efficient approach:

1. You capture receipts and log expenses digitally throughout the quarter
2. You export or share your records with your accountant
3. Your accountant reviews, adjusts if needed, and submits the quarterly update

This is faster and cheaper than the old annual scramble — less time spent by your accountant means lower fees.

How to prepare now

Whether you're in the £50,000+ bracket (starting April 2026) or the £30,000+ bracket (April 2027), here's what to do now:

1. Check if you're affected

Look at your most recent Self Assessment return. Add up your gross self-employment income (box 15 on SA103F) and any gross property income. If the total exceeds £50,000, you're in the first wave.

2. Start keeping digital records now

Don't wait until the deadline. The sooner you build the habit, the less painful the transition. Even if you're below the threshold, digital records save you time at year end.

3. Choose your software stack

Decide whether you'll use all-in-one accounting software, a combination of apps, or work through your accountant. Test it with real transactions before the first quarterly deadline.

4. Talk to your accountant

If you use an accountant, discuss how you'll work together under MTD. Who submits? How do you share records? What software will you both use? Get this sorted before the first quarter ends.

5. Sign up for HMRC's MTD service

You'll need to register for MTD for Income Tax through your HMRC online account. HMRC will send guidance and reminders as your start date approaches.

Step-by-step: how to send your first MTD quarterly update

Once your software is set up and the deadline is approaching, the actual submission is mechanical. Here are the seven steps that take you from a quarter's worth of receipts to a confirmed quarterly update sitting in HMRC's system — software-agnostic, so this applies whether you use FreeAgent, Xero, QuickBooks, Sage or anything else on HMRC's recognised software list. The official guidance for the submission flow itself is published on GOV.UK at Use Making Tax Digital for Income Tax: send quarterly updates.

Step 1: Make sure your records cover the full quarter

Every income and expense entry between the period start and end dates must be in your software before you submit. For Q1 of 2026/27 that means everything dated 6 April to 5 July 2026. A receipt scanned on 10 July is still valid as a Q1 expense — but it has to be entered against its purchase date, not the date you scanned it. Get this wrong and the same receipt either falls into the wrong quarter or doesn't get claimed at all.

Step 2: Reconcile against your business bank account

If your software connects to your bank (or you import statements manually), match every transaction. The point of MTD is end-to-end traceability: HMRC's audit logic expects every figure on a quarterly update to map to a real bank movement and a real receipt or invoice. Unmatched bank lines are the single biggest cause of follow-up queries.

Step 3: Categorise to HMRC's SA103F boxes

Quarterly updates report income and expenses against the same self-employment categories you'd see on the SA103F form. Most MTD software auto-suggests categories — review them before you submit:

• Mileage and vehicle costs → Box 20 (Car, van and travel)
• Phone, broadband, postage, stationery → Box 23 (Phone, fax, stationery and other office costs)
• Stock and materials → Box 17 (Cost of goods bought for resale or goods used)
• Accountant and legal fees → Box 28 (Accountancy, legal and other professional fees)
• Rent, utilities, business rates → Box 21 (Rent, rates, power and insurance costs)
• Anything else genuinely business-related → Box 30 (Other business expenses)

Mis-categorisation isn't penalised quarterly, but the year-end final declaration is where it surfaces — and that's where HMRC's pattern-matching flags returns for review.

Step 4: Sense-check the totals

Open the quarterly summary screen in your software. You'll see two figures: total income and total allowable expenses for the period. These are the only numbers HMRC sees in the quarterly submission — there's no line-by-line transaction list at this stage. Before you click submit:

• Is the income figure close to your expected revenue for the quarter?
• Are expenses too low (something forgotten) or too high (likely a duplicate or a personal expense miscategorised)?
• Have you logged mileage, home-office costs and any subscription expenses, or did they slip?

Step 5: Submit through your software

The actual submission is one click. Your software calls HMRC's MTD API using your Government Gateway credentials and your figures. You'll see one of three responses:

• Accepted — logged. Save the confirmation reference; you'll need it if anything is ever disputed.
• Failed — almost always an authentication issue. Re-link your software to HMRC and try again.
• Pending — rare; HMRC sometimes batches submissions. Usually clears within minutes.

Step 6: Note the next deadline

Submitting Q1 doesn't reset anything — Q2 starts immediately on 6 July. Expenses dated from 6 July onwards belong in the next quarterly update, due 7 November. Keep capturing receipts in real time; the entire point of MTD is that the year-end is no longer a one-shot scramble.

Step 7: Don't pay tax yet

The bit most sole traders miss: quarterly updates are not tax payments. They're cumulative running totals reported to HMRC; they don't trigger an invoice. Your actual tax bill is calculated once at year end through the final declaration (due 31 January) and paid the same way Self Assessment is today — through payments on account in January and July. HMRC sets out the full timing on its MTD for Income Tax introduction page.

Insider tips: traps most sole traders fall into (and how to dodge them)

The basics of MTD are well documented. The expensive mistakes aren't — here are the ones that cost real money or trigger real audits, drawn from the small print of HMRC's own guidance and from accountants who've already submitted thousands of MTD VAT returns.

The "soft landing" doesn't cover late payment

Late submission penalties are waived in 2026/27. Late payment penalties are not. If you owe tax and miss the 31 January 2028 final-declaration payment, you'll get hit with the same 2% / 4% / daily-interest stack as Self Assessment today. The two penalty regimes are independent — submitting on time but paying late costs you, and so does paying on time but submitting late after April 2027.

Penalty points reset only when you're fully caught up

Most articles say "points expire after 24 months." What they don't say: the clock only starts once every outstanding submission is in. If you skip Q2 in year one and Q1 in year two, the 24-month timer doesn't tick until both are filed. The points stay on your record (visible to HMRC, not to lenders) and four of them in any rolling window means a £200 fine.

Government Gateway tokens silently expire

The auth link between your software and HMRC lasts roughly 18 months. Most sole traders don't realise until a quarterly submission fails on deadline day with a "permission denied" error and the help line is on hold. Re-authenticate proactively a week before each quarter's deadline; it takes 90 seconds and rules out the single biggest cause of last-minute submission failures.

Voluntary MTD sign-up is a real escape hatch from Self Assessment friction

If your qualifying income is under £30,000, you don't have to join MTD until HMRC confirms a phase for that band. But you can opt in voluntarily — and if your records are already digital it's worth doing. You skip the Self Assessment paper rigmarole, you build the habit of quarterly bookkeeping while the pressure is low, and your accountant fees usually drop because there's no year-end shoebox to unpick.

Switching MTD software mid-year is allowed but creates work

HMRC permits you to change software at any time. What it doesn't tell you: you must maintain a "digital link" between the two so the year-to-date totals carry forward correctly. Manually rekeying figures breaks the digital-link rule and is technically a record-keeping breach. If you have to switch, do it at the tax-year boundary (early April) so each system holds a complete year's data on its own.

Reasonable excuse: the appeal route nobody uses

If a penalty point or a fine arrives, you can appeal under "reasonable excuse." HMRC's accepted reasons include serious illness, bereavement, software outage, and HMRC system failure. A surprising number of penalties are overturned on a one-paragraph written appeal — but you have to file it within 30 days of the penalty notice. Most people pay and move on; the appeal route works more often than its reputation suggests, particularly for first-time submissions during the soft-landing transition.

The fastest way to fail HMRC's audit logic: round numbers

Real receipts have pence on them. Quarterly summaries with too many round £50s and £100s flag pattern-recognition checks at HMRC. If you're estimating because a receipt is missing, round to a non-round figure (e.g. £47.83, not £50) and keep a note explaining the estimate. It's not a tax-saving trick — it's a "don't get a follow-up letter" trick.

Mileage logged late is the #1 missed deduction

By the time the deadline arrives, most sole traders can't reconstruct the miles they drove for business in May. The mileage allowance (55p/mile for the first 10,000) is one of the largest deductions for trades, drivers and visiting freelancers — missed mileage commonly costs £500–£2,000 a year in unclaimed relief. Log it the same day, every time, or you lose it. See our HMRC mileage rates guide for the rates and what counts as a business journey.

Frequently asked questions

Does MTD replace Self Assessment?

Eventually, yes. The final declaration under MTD replaces the Self Assessment tax return. But during the transition, if you have income sources not covered by MTD (such as capital gains or foreign income), you may still need to complete parts of a return.

What if my income drops below the threshold?

Once you're in MTD, you stay in unless your qualifying income drops below £30,000 for three consecutive tax years. You can then apply to leave.

Are partnerships included?

General partnerships are expected to join MTD from April 2027, but the exact date has not been confirmed. Limited liability partnerships (LLPs) and other complex partnerships are excluded for now.

What about limited companies?

MTD for Income Tax does not apply to limited companies. They file Corporation Tax, which has its own digital requirements. MTD for ITSA applies only to sole traders and landlords who file Self Assessment.

Can I use free software?

HMRC offers free MTD-compatible software for some taxpayers (typically those with simple affairs). Commercial options offer more features. Check HMRC's software list for current free options.

How PocketReceipt helps with MTD

PocketReceipt is a receipt scanner and expense tracker built for UK sole traders. While it's not MTD submission software, it solves the hardest part of MTD compliance: keeping accurate digital records throughout the year.

• AI receipt scanning: Snap a photo and AI extracts the date, supplier, amount, VAT, and category automatically
• HMRC-aligned categories: Expenses are mapped to the correct SA103F boxes, ready for your quarterly update
• Mileage tracking: Log business miles with date, destination, and purpose — exactly what HMRC requires
• Smart warnings: Flags duplicates, missing fields, and capital items before you save
• Organised exports: CSV and PDF exports that your accountant or MTD software can use directly
• Accountant Dashboard: Your accountant can view your records in real time — no more chasing for receipts at quarter end

The goal: when your quarterly deadline arrives, your records are already complete, categorised, and ready to submit. No last-minute scramble. Free on iOS and Android.

Key dates summary

Date	What happens
6 April 2026	MTD for ITSA starts (£50,000+ income)
7 August 2026	First quarterly update deadline (Q1)
7 November 2026	Q2 quarterly update deadline
7 February 2027	Q3 quarterly update deadline
6 April 2027	MTD for ITSA extends to £30,000+ income
7 May 2027	Q4 quarterly update deadline (2026/27)
31 January 2028	Final declaration deadline (2026/27)

Related guides: Every expense a sole trader can claim · Self Assessment & MTD deadlines 2026/27 · HMRC mileage rates · Best receipt scanner apps