Making Tax Digital (MTD) Explained: What UK Businesses Need to Do Now

If you're a sole trader or small business owner in the UK, you've probably heard the phrase Making Tax Digital thrown around a lot recently. And if you've been putting off finding out what it actually means for you, now is the time to pay attention. Making Tax Digital is HMRC's initiative to digitise the UK's tax reporting system. Under MTD, instead of keeping paper records, you'll use recognised software to track income and expenses, and those records can then be submitted directly to HMRC every quarter. Wise In plain English, the annual Self Assessment tax return isn't going away completely, but the way you report your income to HMRC is changing significantly. This guide explains exactly what MTD means, who it affects, what the deadlines are, and what you need to do right now.

What Is Making Tax Digital?

Making Tax Digital, MTD for short, is HMRC's long-term project to bring the UK tax system into the digital age. The idea is to replace the traditional once-a-year tax return with a system of regular digital record-keeping and quarterly updates throughout the year. Instead of submitting one tax return at the end of the year, income and expenses will be reported digitally throughout the year. 123Tax MTD has already been in effect for VAT-registered businesses since 2019. if you're VAT registered, you've been living with MTD for a few years already. The big change happening now is that MTD is being extended to Income Tax, which is what affects the majority of sole traders and small business owners.

Who Does MTD for Income Tax Affect?

This is the question most people ask first, and the answer depends on your income level.

MTD for Income Tax will change how millions of sole traders and landlords handle their income tax. However, it'll only apply to those who have an income above £50,000 across their businesses or properties. Sage

The rollout is happening in three phases:

• April 2026 — sole traders and landlords with gross income over £50,000
• April 2027 — those with gross income over £30,000
• April 2028 — those with gross income over £20,000

A few important things to understand about how the threshold works:

It's based on gross income, not profit. If your turnover is over £50,000 but your profit after expenses is much lower, you're still caught by the first wave.

Multiple income sources are combined. If you were to make £45,000 income from your sole trader business and £6,000 from rental income on a property you own, you'd need to follow the MTD for Income Tax rules as of April 2026 because your total gross income of £51,000 is above the £50,000 threshold. Sage

Your 2024/25 tax return determines your start date. MTD for Income Tax will become mandatory for those with a combined gross income before expenses exceeding £50,000, based on figures reported on their 2024/25 tax returns. Mercer & Hole

Limited companies are not affected yet. MTD for Income Tax applies to sole traders and landlords. Limited companies will eventually fall under MTD for Corporation Tax, but that has a separate timeline that hasn't been confirmed yet.

Partnerships are not included yet, but are expected to be brought in at a future date.

What Actually Changes Under MTD?

This is where people get anxious, so let's be clear about what changes and what stays the same.

What changes:

You'll need to send updates to HMRC every three months. That's four submissions per year, plus a final declaration.Duo Accountants

These quarterly updates are summaries of your income and expenses for that period, not full tax returns. Quarterly submissions are simply a record of transactions for the period. There is no requirement to make tax adjustments, such as assessing whether expenditure is allowable for tax purposes. Bishop Fleming

At the end of the tax year, you submit a final declaration, which replaces your existing Self Assessment return and confirms your overall tax position.

What stays the same:

Your tax payment dates don't change. You still pay in January and July through the payments on account system. MTD changes how you report, not when you pay.

The MTD Quarterly Deadlines

For those mandated from April 2026, here are the key submission dates:

You can also opt to align your quarters to calendar months if that makes your record-keeping simpler, so ending on 31 March, 30 June, 30 September, and 31 December instead. The submission deadlines remain the same either way.

What Software Do You Need?

Under Making Tax Digital, you must keep digital records and submit updates to HMRC using compatible software. Paper records alone won't be enough. MoneySavingExpert

You have two main options:

Option 1 — All-in-one MTD software: Software like Xero, FreeAgent, QuickBooks, or Sage that handles both your record-keeping and your quarterly submissions to HMRC in one place. These are the most straightforward options.

Option 2 — Spreadsheets plus bridging software. If you're one of the 66% of sole traders who track their sales and expenses on a spreadsheet, you will be able to use bridging software, which generates quarterly reports from the records you're already keeping. IPSE

Whichever route you choose, the software must be on HMRC's approved list. Always check the HMRC software finder tool at gov.uk before committing to anything.

The foundation of both options is the same: you need clean, organised records of your income and expenses throughout the year. Waiting until the end of the year to reconstruct expenses is one of the main causes of mistakes and overpaid taxes. MoneySavingExpertThis is where tracking your expenses properly as they happen becomes essential, not just good practice.

How to Register for MTD

Registration is not automatic; you need to sign up for yourself before your start date.

Here's the process:

1. Check your qualifying income from your 2024/25 Self Assessment return to confirm whether you're in the first wave
2. Choose your MTD-compatible software from HMRC's approved list
3. Sign up via your Government Gateway account: If you've used HMRC's online services before, you'll already have one
4. Set up your digital records in your chosen software before 6 April 2026 if you're in the first wave

HMRC should have written to all affected individuals following the submission of the 2024/25 tax return. However, waiting for HMRC's letter may leave you with limited time to prepare. Mercer & Hole Don't wait for the letter, check your position now.

What Are the Penalties for Missing MTD Deadlines?

HMRC uses a points-based penalty system for late quarterly submissions. Each missed submission earns one point, and once you accumulate four points, you receive a £200 fine. Points reset after a period of consistent compliance.

For late payment, the penalties are more significant:

• 16 to 30 days late — 3% of the tax owed
• 31 or more days late — 3% of the tax owed at day 15, plus 3% at day 30, plus an annual rate of 10% charged daily from day 31

For those mandated from April 2026, HMRC applies a special exemption: you won't receive penalty points for late submission of quarterly updates in the first year. 123Tax. This grace period applies to quarterly updates; your final declaration and payment still carry full penalties from day one.

What If MTD Doesn't Apply to You Yet?

If your income is below £50,000 right now, MTD for Income Tax doesn't apply to you until April 2027 at the earliest. But there are still good reasons to pay attention and prepare early. The £30,000 threshold arrives in April 2027, which covers a significant portion of sole traders and freelancers. If your business is growing, you may cross the threshold sooner than you think. More practically, the habits that make MTD straightforward are the same habits that make running your business easier right now. Keeping clean invoice records and logging expenses as they happenrather than reconstructing them annually makes every tax deadline, MTD or not, significantly less stressful.

MTD: The Benefits Worth Knowing About

It's easy to focus on MTD as an administrative burden, but there are genuine upsides once you're set up properly. Quarterly updates mean you have a much clearer picture of your tax position throughout the year, rather than getting a surprise bill in January. You can set money aside accurately, plan cash flow better, and walk into conversations with your accountant with organised records rather than a carrier bag of receipts. For many small businesses, this can make managing cash flow easier.123Tax: The businesses that struggle most with MTD are the ones that were already struggling with disorganised records. If your finances are organised throughout the year, the quarterly submission is largely automated by your software.

Quick Reference: MTD at a Glance

Final Thought

Making Tax Digital is coming whether you're ready or not. The good news is that the businesses best placed to handle it aren't necessarily the biggest or most sophisticated; they're the ones with organised records and good habits already in place. If you're a sole trader or small business owner, the single most useful thing you can do right now is get your income and expense records into a clean, digital system. Built For Small Business gives you free invoicing, expense tracking, and client management in one place, so when MTD deadlines arrive, your records are already where they need to be.