MTD for Income Tax
in UK

From 6 April 2026, the way many self-employed individuals and landlords report income to HMRC changes significantly. Under MTD for Income Tax in UK, qualifying taxpayers must keep digital records and send quarterly updates using compatible software, followed by their final tax return submission after the tax year ends.

This is one of the biggest changes to UK income tax reporting in a generation. Whether you are a sole trader, landlord, or both, understanding what is required and when is essential for staying compliant and avoiding HMRC penalties. At ENCY&LINE, we help clients prepare for MTD for Income Tax from eligibility checks and software setup through to quarterly compliance.

What Is MTD for Income Tax in UK?

Making Tax Digital for Income Tax Self Assessment, often called MTD for ITSA or MTD for Income Tax, is HMRC's programme to modernise how sole traders and landlords report income and expenses. Instead of relying only on one annual Self Assessment return, qualifying taxpayers must keep digital records throughout the year, submit quarterly updates for each income source, and use compatible software to finalise their tax position.

Who Is Affected?

You will need to use MTD for Income Tax if you are a sole trader or landlord registered for Self Assessment, you receive income from self-employment or property, and your qualifying income is above the relevant threshold. Qualifying income generally means your combined gross income from self-employment and UK property before expenses are deducted.

For example, a self-employed plumber earning £35,000 per year who also receives £18,000 in rental income has qualifying income of £53,000. That would place them in the first MTD phase from 6 April 2026.

Who Is Currently Exempt?

MTD for Income Tax does not currently apply to everyone. Limited companies are outside these rules because Corporation Tax digitisation is separate. Partnerships are due to join later, with the timeline to be confirmed. Trusts and estates are currently outside the main MTD for Income Tax mandate, and digitally excluded individuals may be able to apply for an exemption where HMRC agrees digital filing is not reasonable.

What Changes Under MTD for Income Tax?

The biggest practical change is the move from one annual filing process to regular digital reporting. For each income source, you submit a quarterly summary of income and expenses. These updates are not full tax returns and do not usually require a tax payment at that stage, but they must be sent on time through compatible software.

If you have both a sole trade and a rental property business, each income source needs its own updates. That can mean up to eight quarterly submissions per year before the final tax return information is submitted.

Digital Record-Keeping Requirements

Under MTD, income and expense records must be kept digitally and submitted through HMRC-compatible software. Spreadsheets alone are not enough unless they are connected to compliant bridging software. Good digital records should show income, expenses, dates, categories, and supporting evidence clearly enough to support each quarterly update and the final tax calculation.

Choosing MTD-Compatible Software

Choosing the right self-employed tax software is one of the most important preparation steps. Software should be able to store digital records, communicate with HMRC, submit quarterly updates, support year-end tax return information, and keep records available for the required retention period.

How to Sign Up for MTD for Income Tax

To sign up, you need to be registered for Self Assessment and have submitted a tax return in the last two years. You should choose and authorise your software, sign in through Government Gateway, confirm each active income source, and decide whether to use tax year quarters or calendar quarters. If you use an accountant or tax advisor, they can usually sign you up and manage MTD submissions on your behalf.

The MTD Penalty Points Regime

MTD uses a points-based penalty approach for late submissions. A missed quarterly update or late final submission can add a penalty point. Once the points threshold is reached, further late submissions can trigger financial penalties. Late payment of tax can also lead to interest and penalties, so regular record-keeping is still the best defence.

Common MTD for Income Tax Mistakes to Avoid

The first MTD deadline can feel distant until software, authorisation, bookkeeping cleanup, and income-source registration all need to happen at once. Preparing early makes the switch much calmer.

How ENCY&LINE Supports Your MTD Compliance

ENCY&LINE provides end-to-end MTD for Income Tax in UK support for sole traders, landlords, and mixed-income individuals. We can check your qualifying income, confirm your mandate date, recommend and set up compatible software, register you with HMRC, manage quarterly updates for each income source, prepare the final tax return information, and use your quarterly figures for proactive tax planning during the year.

Get Expert Help With MTD for Income Tax in UK

Unsure whether MTD applies to you, or want to get ahead of your compliance obligations? Speak to ENCY&LINE before the next deadline arrives. The earlier your digital records are set up, the easier quarterly reporting becomes.