MAKING TAX DIGITAL (MTD) INCOME TAX:
The Definitive Guide (2026)
Everything you need to know to comply, file & stay ahead — for self-employed individuals, landlords, directors, pensioners, traders & agents.
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Chapter 1
What Is Making Tax Digital for Income Tax?
The biggest change to Income Tax reporting in the UK in decades.
What Is Making Tax Digital for Income Tax?
Making Tax Digital for Income Tax (often shortened to MTD ITSA) is HMRC’s new system for reporting Income Tax using digital records and regular online submissions, rather than a single annual Self Assessment return.
Under MTD ITSA, taxpayers with qualifying income must:
- Keep their business and property records digitally
- Send quarterly updates to HMRC
- Submit a final year-end declaration confirming their total tax position
This represents the largest structural change to Income Tax reporting in the UK in decades, affecting how millions of individuals, landlords, and agents manage compliance.
MTD does not mean you need to pay tax quarterly – although there is currently a consultation on this. It means HMRC receives more frequent information, so the advantage (to you) is that you’ll be able to see your tax position throughout the year, and it’ll be much more accurate.
The tax calculation is still finalised annually, at the end of the year – using a Final Statement.
Key MTD Requirements (At a Glance)
Worried about getting MTD Ready? You needn’t be. The new system is actually really simple, once you get started. Under MTD for Income Tax:
- You must keep digital records of qualifying income and expenses
- You must submit four quarterly updates per tax year
- You must complete a Final Declaration after the tax year ends
- You must use HMRC-recognised compatible software, either directly or via an authorised agent
The easiest way to get compliant is simply to start using suitable software – like #GoFile.
Failure to meet these requirements can result in penalties, even if no tax is ultimately due.
Chapter 2
Who Is Affected?
Thresholds, timelines, exemptions — who needs to act and when.
Who Must Use MTD for Income Tax?
Making Tax Digital for Income Tax is being rolled out in stages.
Tax Year April 2026–27
For the initial roll-out, MTD for Income Tax applies to individuals with an income of £50,000 or more from:
- Self-employment
- UK property / rental income
Qualifying income refers only to self-employment and property income — not total income from all sources.
Tax Year April 2027–28 … and 2028–29
For April 2027–28, the threshold for using MTD is lowered to £30,000.
For 2028–29, the threshold is lowered again, to £20,000.
Good to know: If you’re filing MTD Quarterly Returns, your first ‘due date’ will be the 7th of the month after the first quarter. For example: the first quarter runs from April to June 2026. You’ll need to file your first Quarterly Return by 7th August 2026.
Income That Does Not Trigger MTD (But Still Matters)
The following income types do not trigger MTD quarterly reporting, but must still be included in your final year-end declaration:
- Dividends (e.g. company directors)
- Pension income
- Savings interest
- Employment income (PAYE)
- Foreign income
Depending on your chosen software, you can file the above income types through MTD. You won’t need to file quarterly returns for these, but with software you can confirm your income for each type at any point through the tax year — giving you an up-to-the-minute, accurate tax position at all times.
The MTD Timeline — When It Starts
| Phase | Who It Affects | When |
|---|---|---|
| Phase 1 | Higher-income landlords & self-employed (£50k+) | From April 2026 |
| Phase 2 | Mid-income individuals (£30k+) | April 2027 |
| Phase 3 | Lower-income groups (£20k+) | April 2028 |
Exact dates depend on total qualifying income, HMRC rollout decisions, and legislative changes. Planning early is critical, especially for landlords and agents with complex client portfolios.
Who May Be Exempt from MTD?
If you don’t have any Property or Self Employment income – you’re already exempt!
You can still use tools such as #GoFile to file other income streams, but there’s no obligation to do this.
If you do have Property or Self Employment Income, you may be eligible for exemption if you are:
- Digitally excluded due to disability or age
- Unable to use digital tools for religious or practical reasons
- Located where internet access is unreliable
- Receiving income below the threshold (£50k for 2026/27)
Exemptions are not automatic and usually require formal confirmation from HMRC.
Agents & Accountants Under MTD
Agents and accountants play a central role in MTD compliance. With proper authorisation, agents can:
- Sign clients up to MTD
- Maintain digital records
- Submit quarterly updates
- Complete the final declaration
MTD significantly changes workflows for agents, especially those handling high-volume landlord clients, multiple income streams, or spreadsheet-based records.
Many agents now rely on specialist MTD filing tools rather than full bookkeeping platforms.
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Chapter 3
Getting Started with MTD Income Tax
How to sign up, choose your software, and set up digital records.
How to Sign Up for MTD Income Tax
Step 1: Check your Eligibility
Many taxpayers benefit from early preparation, even if not yet mandated.
Good to know: You can voluntarily join the MTD Income Tax scheme at any time from April 2026–27. And in fact, you can even leave it if you’re not yet mandated to file through MTD — which is great if you just want to try it out!
Step 2: Sign up through your HMRC Gateway
You (or your agent) must:
- Log into the HMRC Gateway
- Go to Income Tax, and Register for MTD ITSA
- Ensure sign-up is timed for the tax year you want to start
Step 3: Choose the Right Software
You’ll need software to file Quarterly Updates. HMRC has a dedicated software choices page that allows you to select what best suits you.
MTD compliant software must:
- Store digital records
- Submit quarterly updates
- Support final declarations
Many taxpayers and agents choose end-to-end software (like #GoFile), which lets you file both Quarterly Updates and all other non-mandated income sources — Interest, Pensions, Dividends — in a single package.
Step 4: Create & Maintain Digital Records
Got a bank account? You’ll already be 90% of the way to being compliant.
Digital records must include:
- Income amounts
- Expense categories
- Transaction dates
Once you’ve got that … import the figures into your chosen software for submission to HMRC. Easy!
Chapter 4
How to File Income Tax with MTD
Quarterly updates, end-of-period statements & the Final Declaration explained.
Quarterly Updates Explained
Each tax year is split into four update periods. Quarterly updates:
- Are summaries, not final tax calculations
- Cover self-employment and property income only
- Can be amended later if needed
They give HMRC visibility throughout the year, not final figures. Your full tax position is confirmed at year-end.
End-of-Period Statements & Final Declaration
After the tax year ends, you’ll complete a Final Declaration. This replaces the traditional Self Assessment return. At this point:
- Business and property figures are finalised
- Adjustments and allowances are applied
- Non-MTD income (e.g. dividends, pensions) is added
How #GoFile handles this: With #GoFile, your Quarterly Updates and Final Declaration are filed from a single dashboard. You import your figures, review them, and submit — all in a few clicks. Try it free.
The Filing Year at a Glance
File quarterly update by 7th August. Report self-employment and property income & expenses for the period.
File quarterly update by 7th November.
File quarterly update by 7th February.
File quarterly update by 7th May.
Complete by 31st January following the end of the tax year. Confirms your full tax position and replaces the traditional Self Assessment return.
File your quarterly updates with #GoFile
Import your figures, review, and submit to HMRC in a few clicks. Free to try.
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Chapter 5
Getting it Right
Common mistakes to avoid, and answers to the most frequent questions.
Common MTD Mistakes (What We See in Practice)
Most penalties arise from process errors, not unpaid tax. Here are the most common mistakes to avoid:
- Confusing quarterly updates with tax payments
- Assuming dividend or pension income triggers MTD quarterly reporting
- Leaving sign-up too late
- Using incompatible or only partially compliant software
- Breaking digital links between systems
Income Tax: Frequently Asked Questions
Do I still submit an annual Income Tax Return under MTD?
Yes. The Final Declaration replaces the old Self Assessment return. It’s submitted after the tax year ends and confirms your total tax position, including all income types.
Do quarterly updates calculate tax?
Actually, yes. When you submit your Quarterly Updates (for either Property or Self Employment Income), your tax profile is automatically re-calculated. This will help you prepare for the year-end tax position, so you’ll always have a view of how much tax you’ll owe at the end of the year.
Can I keep using spreadsheets?
Spreadsheets are a great and easy way of keeping on top of your income and expenses.
If you’re able to download bank statements as a spreadsheet – usually in CSV format – you should easily be able to calculate your total income and expenses in the period.
With a spreadsheet, you’ll need to have your quarterly income & expenses figures, which you can then import to suitable software (like #GoFile). The figures will then be converted to the format needed to file with HMRC, and you can file in a few clicks.
Can my accountant do everything for me?
Many of our clients use accountants to advise and submit figures.
With #GoFile, you can access your own Income Tax account (FREE), so you can see what’s being calculated and submitted, and view your own Income Tax position at any time.
Your accountant can file on your behalf; you’d just need to authorise them with HMRC to act as your agent.
Do I have to pay tax every quarter?
Not currently. MTD quarterly updates are reporting obligations only — your tax is still calculated and paid annually. HMRC is consulting on quarterly payments, but no changes have been confirmed.
More common MTD Income Tax questions
What is the MTD Income Tax threshold?
The MTD Income Tax threshold is based on qualifying income from self-employment and UK property only — not your total income from all sources.
The thresholds are:
- £50,000 — from April 2026
- £30,000 — from April 2027
- £20,000 — from April 2028
Income from dividends, PAYE employment, pensions, or savings does not count towards the threshold.
When does MTD for Income Tax start?
MTD for Income Tax starts in April 2026 for individuals with qualifying income of £50,000 or more. The rollout continues in phases:
- April 2026: £50,000+ qualifying income
- April 2027: £30,000+ qualifying income
- April 2028: £20,000+ qualifying income
You can also voluntarily join MTD from April 2026 even if you’re not yet mandated to do so.
What happens if I miss an MTD quarterly update deadline?
Missing a quarterly update deadline results in a penalty point under HMRC’s points-based system. Once you accumulate enough points, HMRC will issue a £200 financial penalty.
The good news: quarterly updates can be amended after submission if you’ve made errors. It’s always better to file on time with estimated figures than to miss the deadline altogether.
You can appeal a penalty point if you have a reasonable excuse (such as illness or bereavement). Contact HMRC as soon as possible if this applies to you.
How do I sign up for MTD Income Tax?
To sign up for MTD Income Tax:
- Log into your HMRC online account (Government Gateway)
- Go to Income Tax and select Register for MTD ITSA
- Choose your MTD-compatible software (e.g. #GoFile)
- Ensure your sign-up is timed for the correct tax year
You or your authorised agent can complete the sign-up process. If you are using an agent, they’ll need your permission to act on your behalf.
What are the quarterly update deadlines for MTD Income Tax?
There are four quarterly updates per tax year, each with a fixed filing deadline:
- Q1 (April – June): file by 7th August
- Q2 (July – September): file by 7th November
- Q3 (October – December): file by 7th February
- Q4 (January – March): file by 7th May
Your Final Declaration is due by 31st January following the end of the tax year.
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