Categories
Latest Post
Making Tax Digital Checklist 2026
MTD Quarterly Updates 2026
MTD Qualifying Income Explained 2026
Making Tax Digital Penalties 2026
Have Any Question?
If you have any questions about our services, call us or email at:
- +44 75 079 66252
- contact@mtd-makingtaxdigital.co.uk
HMRC MTD Income Tax Changes 2026
From 6 April 2026, HMRC is launching the biggest overhaul of UK income tax reporting in a generation, Making Tax Digital for Income Tax Self-Assessment (MTD ITSA). This change will affect millions of UK self-employed individuals, landlords, and people with side hustles, replacing the once-a-year self-assessment with mandatory quarterly digital reporting.
If you’ve received a letter from HMRC about MTD changes, seen news coverage in the Telegraph or Times, or are simply trying to understand what this means for your tax, this guide explains everything that’s changing, when, and what you need to do.
Written by ICAEW chartered accountants who advise UK taxpayers on these exact changes daily, we’ll cover:
- Every change happening to UK income tax under MTD
- Who’s affected and when (with exact thresholds)
- What replaces the old self-assessment system
- New deadlines, penalties, and software requirements
- Exactly what to do based on your situation
Let’s start with the headline change.
The Big Change: From Annual Returns to Quarterly Digital Updates
For decades, UK self-employed people and landlords have filed one annual self-assessment tax return, typically rushed through in January each year. From 6 April 2026, this system is being completely replaced for higher earners with HMRC’s Making Tax Digital for Income Tax Self-Assessment (commonly called MTD ITSA).
Here’s the comparison side-by-side:
Feature | Old Self-Assessment (Pre-2026) | New MTD ITSA (Post-April 2026) |
|---|---|---|
Filing frequency | Once per year (annual) | 5 times per year (4 quarterly + 1 Final Declaration) |
Record-keeping | Paper / spreadsheets allowed | Digital records required in MTD software |
Filing method | HMRC online portal or paper | Approved MTD software or bridging software |
Deadline | 31 January (following tax year) | Quarterly: 7 Aug / 7 Nov / 7 Feb / 7 May + Final: 31 Jan |
Penalty for late filing | £100 instant + £10/day | Penalty points → £200 fine + tiered late payment % |
HMRC visibility | Once a year (annual return) | Quarterly real-time data |
Tax planning | January cramming | Year-round visibility (if used properly) |
Cost (DIY) | ~£0-£10/year | ~£10-£40/month software |
Cost (accountant) | £200-£500/year | £600-£1,800/year (managed service) |
Bottom line: MTD ITSA is more frequent, more digital, more expensive, and more visible to HMRC than the old system. The room for error is much smaller, and the penalties are steeper.
Who Does the MTD Income Tax Change Affect?
MTD ITSA is being rolled out in three phases based on income thresholds. Here’s the exact timeline:
Tax Year Starting | Threshold | Affected |
|---|---|---|
6 April 2026 | Over £50,000 | Higher-earning self-employed people and landlords |
6 April 2027 | Over £30,000 | Most established self-employed people and mid-tier landlords |
6 April 2028 | Over £20,000 | Almost all UK self-employed people, side hustlers, and small landlords |
How HMRC Calculates Your Threshold
HMRC uses your qualifying income, which is gross income (before expenses), not profit. This includes:
- Self-employment turnover (revenue from your business)
- UK property rental income (gross rent received)
- Overseas property income (if UK resident)
It does NOT include PAYE salary, dividends, interest, pension, or capital gains.
Real Example: Who's in Scope?
Person | Their Income | MTD ITSA Status |
|---|---|---|
Anna — Freelance designer in London | £62,000 self-employment | ✅ In scope from April 2026 |
Mike — 3-property landlord in Manchester | £36,000 gross rent + £40k PAYE job | ✅ In scope from April 2027 (rent counts) |
Priya — Etsy seller in Leeds | £22,000 from Etsy + £18,000 part-time PAYE | ✅ In scope from April 2028 (£22k from Etsy alone) |
Tom — Plumber in Birmingham | £45,000 self-employment | ✅ In scope from April 2027 |
Sarah — Receptionist with £900/yr side hustle | £900 side income + PAYE | ❌ Not in scope (under £1,000 trading allowance) |
Read our complete MTD Thresholds Explained guide for more examples.
Every Change You Need to Know About
Change 1: Quarterly Submissions Replace Annual Returns
The biggest change. Instead of one annual tax return in January, you’ll submit 4 quarterly updates plus 1 Final Declaration each tax year.
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 |
Final Declaration | Whole tax year reconciliation | 31 January (following year) |
Bottom line: MTD ITSA is more frequent, more digital, more expensive, and more visible to HMRC than the old system. The room for error is much smaller, and the penalties are steeper.
Change 2: Mandatory Digital Records (No More Paper)
Under MTD ITSA, every transaction must be captured digitally:
- Sales invoices and income receipts
- Business expense receipts (photographed or scanned)
- Bank transactions linked to the business
- Mileage logs (if claiming travel expenses)
- Home office costs (if claiming)
Paper receipts are still allowed, but you must digitise them (photo, scan, or enter into software). Shoeboxes of receipts are no longer compliant.
Change 3: Compulsory MTD-Compatible Software
You cannot file MTD ITSA returns through paper, email, or HMRC’s free online portal. You must use HMRC-approved MTD-compatible software, such as:
- Xero (£15-£35/month)
- QuickBooks Self-Employed or Online (£10-£25/month)
- Sage Business Cloud (£14-£40/month)
- FreeAgent (free with NatWest, otherwise £15/month)
- Zoho Books (£10-£25/month)
- Excel + bridging software (£12-£25/year)
See our full comparison: Best MTD Software UK 2026.
Change 4: Digital Links Rule
If you use multiple tools, the data must transfer digitally between them – no copy-pasting. Acceptable links include formula references, API connections, and CSV imports.
HMRC can fine you up to £3,000 PER FAILURE to maintain digital links. This is one of the most commonly broken rules.
Change 5: New Penalty Regime
HMRC has built a harsher penalty system for MTD compared to the old self-assessment:
Failure | Penalty |
|---|---|
Missing 4 quarterly submissions | £200 fine + 4 penalty points |
Late payment 16-30 days | 3% of tax owed (rising to 4% from April 2027) |
Late payment 31+ days | Additional 3% + 10% annual interest |
Filing through non-compatible software | £400 per non-compliant return |
Failing to keep digital records | Up to £3,000 per failure |
No digital links between systems | Up to £3,000 per failure |
Read the full MTD Penalties guide.
Change 6: Final Declaration Replaces Self-Assessment
The old SA100 self-assessment form is being phased out. Instead, you’ll file a Final Declaration by 31 January each year. The Final Declaration:
- Reconciles your quarterly figures
- Adds non-business income (PAYE, dividends, interest, pension)
- Allows you to claim allowable reliefs (pension contributions, marriage allowance, etc.)
- Determines your final tax liability for the year
Read our MTD Final Declaration vs Self-Assessment guide for the full comparison.
Change 7: Three-Year Lock-In Rule
Once you exceed the threshold and enter MTD ITSA, you must stay in for a minimum of 3 years – even if your income drops below the threshold in subsequent years.
Change 8: Cash Basis Becomes the Default
From April 2024, cash basis accounting became the default for sole traders (you account for income when received, not when invoiced). MTD ITSA continues this – simplifying record-keeping for most self-employed people.
Read our MTD Cash Accounting guide for the full rules.
What HMRC's MTD Letters Mean (And What to Do)
HMRC has been sending letters to taxpayers who they believe will be affected by MTD ITSA from April 2026. If you’ve received one, don’t panic, but don’t ignore it either.
Common Letter Types You Might Receive:
“You may need to use Making Tax Digital for Income Tax” – HMRC believes your last return showed qualifying income near or above £50,000. This is a heads-up, not a demand.
“You will need to use Making Tax Digital from April 2026” – HMRC has identified you as definitely in scope. You must register before April 2026.
“Please confirm your details” – HMRC is verifying your contact info, software, and accountant for MTD onboarding.
What to Do If You Receive an HMRC Letter:
Don’t ignore it, but also don’t panic. Read it carefully.
Verify your qualifying income for the last tax year. If over £50k, you’re correctly identified.
Choose your MTD software (or consult an accountant for the right choice).
Register with HMRC for MTD ITSA via your Government Gateway.
Set up your digital record-keeping system at least 6 months before April 2026.
If you have an accountant, forward the letter to them immediately.
Pro tip: HMRC’s letters are sometimes sent in error to people who aren’t actually in scope. If you believe HMRC has the wrong information about you, contact them in writing or get your chartered accountant to clarify.
What Should You Do? (By Situation)
If You’re Self-Employed (Sole Trader)
Calculate your qualifying income for the past 12 months
If over £50k → start preparing now for April 2026
Open a separate business bank account
Choose MTD software (Xero, QuickBooks, FreeAgent recommended)
Start digitising records immediately
Consider a chartered accountant for ongoing support
Read our MTD for Self-Employed Complete Guide.
If You’re a Landlord
Total your gross rental income across ALL properties (UK + overseas)
Add any self-employment income
If combined total > £50k → MTD ITSA applies from April 2026
Set up property-level tracking in your accounting software (Xero or Hammock)
Register with HMRC for MTD ITSA
Consider Section 24 mortgage interest implications
Read our complete MTD for Landlords guide.
If You’re Both Employed and Self-Employed/Landlord
Only your self-employment + rental income counts toward the £50k threshold
PAYE salary is excluded
If self-employment + rental > £50k → MTD applies from April 2026
Your Final Declaration will combine ALL income (PAYE + business + property)
Consider speaking to a chartered accountant about overall tax optimisation
If You Have a Side Hustle (Etsy, OnlyFans, YouTube, Uber, etc.)
Side hustle income counts as self-employment for MTD purposes
Income under £1,000/year is exempt (trading allowance)
Income over the threshold triggers MTD ITSA
Keep records separate from any PAYE employment
If You’re Under £50k (For Now)
You’re not in scope from April 2026, but threshold drops
£30k threshold from April 2027, most freelancers will be in
£20k threshold from April 2028, almost all self-employed in
Start using accounting software voluntarily, it’ll make the transition easier
If You’re Non-UK Resident with UK Income
Non-resident landlords are affected (NRL scheme runs alongside MTD)
Non-resident self-employed with UK qualifying income may be affected
Specialist advice strongly recommended
5 Common Myths About HMRC’s MTD Income Tax Changes
Myth 1: “MTD Will Increase My Tax Bill”
Wrong. MTD doesn’t change tax rates or rules – it only changes how you report. However, more frequent reporting may mean less room for errors that previously went unnoticed.
Myth 2: “I Don’t Have to Comply Until April 2026”
Technically true, but practically wrong. If you wait until April 2026, your software will be overwhelmed, accountants will be fully booked, and you’ll pay 2-3x more for rushed setup. Start preparing 6+ months early.
Myth 3: “I Can Still Use Paper Records If I Want”
False. Once you’re in MTD ITSA, all records must be digital. Paper receipts must be digitised (scanned/photographed/entered). Failure to keep digital records can incur fines up to £3,000.
Myth 4: “I Don’t Need an Accountant Under MTD – Software Does Everything”
Software handles data entry, not tax optimisation. Under MTD’s quarterly visibility, HMRC’s algorithms can spot errors faster, and you have 5 chances per year to make a costly mistake. Most self-employed people benefit from chartered accountant oversight under MTD — more, not less, than before.
Myth 5: “If I Earn Under £50k I’m Safe”
Only for one tax year. The threshold drops to £30,000 in 2027 and £20,000 in 2028. Almost every UK self-employed person and landlord will eventually be affected.
Your 6-Month Action Plan to Get MTD-Ready by April 2026
Here’s the exact roadmap we use with our clients:
Month 1 (October 2025): Check Your Status
Calculate qualifying income for last tax year
Confirm whether April 2026 or 2027/2028 applies to you
Book a free consultation with a chartered accountant
Month 2 (November 2025): Set Up Foundations
Open separate business bank account (if not already)
Choose MTD software (Xero, QuickBooks, FreeAgent, etc.)
Set up basic categories and accounts
Month 3 (December 2025): Start Digital Records
Begin entering all income/expenses digitally
Upload last 12 months of receipts and invoices
Reconcile bank transactions
Month 4 (January 2026): Register and Test
Register with HMRC for MTD ITSA via Government Gateway
Run a practice quarterly submission with current data
Identify gaps and fix them
Month 5 (February 2026): Refine Processes
Set up monthly bookkeeping routine
Build a deadline alert system
Final consultation with accountant
Month 6 (March 2026): Final Preparation
Complete all pre-MTD bookkeeping
Ensure digital links between all systems
Set Q1 2026-27 ready for live submission
Download our free MTD Checklist to track your progress.
Real Case Study: How One Sole Trader Got Ready for MTD
A Milton Keynes-based sole trader with multiple income streams (self-employment, employment, and rental income) came to us in late 2024. He was facing an HMRC enquiry covering 5 years of returns, and he was anxious about how MTD ITSA from April 2026 would compound his existing tax complexity.
What we did:
- Resolved his 5-year HMRC enquiry, saving him over £7,000 in tax + waived penalties
- Set up Xero with proper categorisation for self-employment + rental income
- Built a quarterly bookkeeping routine he could maintain himself
- Migrated 12 months of historical data into MTD-ready format
- Created a deadline alert system aligned with MTD quarters
Outcome: Past HMRC issues resolved with major tax savings. Fully MTD-ready 6 months ahead of the April 2026 deadline. Quarterly submissions now take him 30 minutes instead of 3-day panics.
HMRC MTD Income Tax Changes: Frequently Asked Questions
What are the HMRC MTD income tax changes?
MTD ITSA replaces the old annual self-assessment with mandatory quarterly digital reporting from April 2026. Self-employed people and landlords earning over £50,000 must use HMRC-approved software, keep digital records, and submit 4 quarterly updates plus a Final Declaration each tax year.
When does MTD for income tax start?
6 April 2026 for income over £50,000. The threshold drops to £30,000 from 6 April 2027 and £20,000 from 6 April 2028.
Who’s affected by HMRC’s MTD income tax changes?
Self-employed people, sole traders, freelancers, gig economy workers, content creators, and landlords with qualifying income over the threshold for that tax year.
Does MTD replace self-assessment?
Yes, for those in scope. The annual self-assessment tax return is replaced by 4 quarterly submissions plus a Final Declaration filed by 31 January (same as old SA deadline).
What is MTD ITSA?
MTD ITSA stands for Making Tax Digital for Income Tax Self-Assessment, HMRC’s mandatory digital reporting system for income tax, starting April 2026.
How is HMRC notifying people about MTD?
HMRC has been sending letters to taxpayers they believe will be in scope, based on their last self-assessment data. If your income shows over £50k qualifying income, expect a letter.
Do I have to use Making Tax Digital for self-assessment?
Yes, if your qualifying income exceeds the threshold for your tax year. You’ll switch from annual self-assessment to quarterly MTD ITSA submissions.
Is MTD for income tax compulsory?
Yes, once you meet the threshold. Limited exemptions exist (age/disability, religious grounds, no internet access, insolvency) but these are rare and must be applied for in writing.
What happens if I don’t comply with MTD for income tax?
Penalties include £200 fines for repeated late submissions, 3-10% late payment penalties, £400 per non-compliant return, and up to £3,000 per failure to keep digital records or maintain digital links.
Can I file MTD income tax returns myself?
Yes, if you have MTD-compatible software and clean digital records. However, most self-employed people and landlords benefit from chartered accountant support due to the complexity of quarterly submissions, Section 24 rules, and the harsher penalty regime.
What income counts toward the MTD threshold?
Gross self-employment income (turnover) plus gross UK and overseas property income. PAYE salary, dividends, interest, pensions, and capital gains do NOT count.
Will MTD changes affect my PAYE tax?
No, PAYE remains separate. MTD ITSA only affects self-employment and property income. Your PAYE tax continues to be deducted by your employer.
Can I claim expenses under MTD?
Yes, all allowable business expenses can still be claimed. You’ll log them digitally throughout the year, and they reduce your taxable profit on the Final Declaration.
What if I run a limited company?
Limited companies are subject to Corporation Tax, not ITSA. MTD for Corporation Tax is expected to begin April 2027.
How do I prepare for MTD income tax changes?
Start 6 months early: open a separate business bank account, choose MTD-compatible software, begin keeping digital records, register with HMRC via Government Gateway, and consider expert support from a chartered accountant.
Get MTD-Ready Now with ICAEW Chartered Specialists
HMRC’s MTD income tax changes are the biggest UK tax reform in a generation. Getting it wrong means penalties starting at £200 and rising into thousands. Getting it right means smooth quarterly submissions, optimised tax positions, and zero HMRC stress.
At MTD – Making Tax Digital (part of B1 Accountants), our ICAEW chartered accountants specialise exclusively in MTD compliance for UK taxpayers. We offer:
- Free MTD readiness assessment — find out exactly what you need to do
- MTD software setup tailored to your situation
- All quarterly submissions handled for you (4 per year)
- Final Declaration filing with tax optimisation
- Section 24 mortgage interest handling for landlords
- HMRC liaison if you receive letters or enquiries
- Transparent monthly pricing — no January cramming bills
Book your free 30-minute MTD readiness call, we’ll review your situation, explain exactly how the April 2026 changes affect you, and give you a clear plan.
BOOK YOUR FREE MTD CLARITY CALL →
Or call us directly: +44 (0) 75 079 66252
Bilal Chudher
(FCCA, FCA, TEP & MBA) Chartered Accountant
