Making Tax Digital (MTD) for Income Tax is now a major compliance requirement for many UK sole traders and landlords. From April 2026, taxpayers within the first mandatory group must follow MTD rules, including keeping digital records and submitting quarterly updates.

Understanding MTD penalties in 2026/27 is important because the penalty system has changed. The good news is that HMRC has introduced a more gradual, points-based approach for late submissions. However, penalties can still apply to late tax returns and late payments.

What Is Making Tax Digital for Income Tax?

Making Tax Digital for Income Tax requires qualifying sole traders and landlords to manage their income and expenses digitally using compatible software.

For the 2026/27 tax year, MTD for Income Tax applies to taxpayers with qualifying income above £50,000, based on their 2024/25 income. The threshold will reduce to more than £30,000 from April 2027 and more than £20,000 from April 2028.

The system generally involves:

• Keeping digital financial records

• Using compatible accounting software

• Sending quarterly updates

• Completing an annual tax return

• Paying Income Tax by the required deadline

MTD does not replace the need to calculate your overall tax liability. Instead, it changes how relevant financial information is recorded and reported to HMRC.

How Do MTD Penalties Work in 2026/27?

The penalty system introduced with MTD for Income Tax is points based for late submissions.

However, there is an important transitional rule for 2026/27.

HMRC will not issue penalty points for late quarterly updates during the 2026/27 tax year. Taxpayers still need to submit those updates, but no penalty point will be issued simply because a quarterly update is late.

Penalty points can still apply if the annual tax return is submitted late.

For taxpayers required to use MTD, the normal penalty threshold is 4 points. Once four points are reached, a £200 penalty is charged. A further £200 penalty can apply each time another submission deadline is missed.

What Are the MTD Quarterly Update Deadlines?

For most taxpayers using MTD for Income Tax in 2026/27, the quarterly update deadlines are:

Although late quarterly updates do not attract penalty points during 2026/27, they still need to be submitted before the taxpayer can complete the tax return.

This means businesses should not treat the temporary penalty relaxation as permission to ignore quarterly reporting.

What Happens If You Submit Your Tax Return Late?

Penalty points still apply to late tax returns for the 2026/27 tax year.

For taxpayers within the MTD penalty system, reaching the relevant threshold can result in a £200 financial penalty.

The annual tax return and tax payment deadline is generally 31 January following the end of the tax year. Therefore, for the 2026/27 tax year, the deadline is 31 January 2028.

Submitting quarterly updates on time is therefore only one part of MTD compliance. You must also complete your annual reporting obligations.

How Do MTD Late Payment Penalties Work?

Late payment penalties are separate from the points-based late submission system.

For the 2026/27 tax year, HMRC has introduced more proportionate late payment penalties. In the first year of the new penalties, taxpayers generally have 30 days after the payment due date to pay in full or contact HMRC about a payment plan before late payment penalties begin.

For 2026/27:

• Up to 15 days late: no late payment penalty

• 16 to 30 days late: generally 3% of the tax owed at day 15

• 31 days or more late: an additional 3% can apply, plus an annualised 10% charge on the outstanding amount from day 31

Late payment interest is also charged separately.

This makes cash-flow planning particularly important for sole traders and landlords.

What Happens to MTD Penalty Points?

Penalty points do not necessarily remain on your record forever.

If you are below the four-point threshold, an individual point will normally be removed automatically 24 months after the missed deadline, subject to HMRC's conditions.

If you reach the four-point threshold, different rules apply. You generally need to meet HMRC's conditions for compliance and clear outstanding submissions before all points can be removed.

Keeping track of your penalty position can therefore help you avoid reaching the financial penalty threshold.

How Can You Avoid MTD Penalties?

The easiest way to avoid MTD penalties is to build compliance into your normal bookkeeping routine.

1. Keep Digital Records Up to Date

Do not wait until a quarterly deadline approaches before recording transactions.

Enter sales, expenses and other relevant transactions regularly so your records remain accurate.

2. Use MTD-Compatible Software

Your accounting software needs to support the relevant MTD requirements.

Check that the software you use is compatible with MTD for Income Tax before relying on it for submissions.

3. Reconcile Your Bank Account Regularly

Bank reconciliation helps identify missing transactions, duplicate entries and incorrect figures.

Good bookkeeping makes quarterly reporting much easier.

4. Set Multiple Deadline Reminders

Use calendar reminders several days or weeks before each MTD deadline.

This gives you time to correct errors before submitting your information.

5. Keep Your Business and Personal Transactions Organised

Separate business and personal transactions wherever possible.

A dedicated business bank account can make bookkeeping, expense tracking and tax preparation significantly easier.

6. Monitor Your Cash Flow

MTD compliance does not automatically mean you have the money available to pay your tax bill.

Use your accounting records to estimate your tax position and put money aside throughout the year.

7. Get Professional Accounting Support

If you are unsure about MTD requirements, working with an accountant can reduce the risk of missed deadlines and inaccurate records.

An accountant can help with bookkeeping, software setup, quarterly reporting, tax calculations and year-end compliance.

What If You Cannot Pay Your Tax Bill?

If you are struggling to pay your Income Tax, do not simply ignore the deadline.

HMRC advises taxpayers to contact them as soon as possible to discuss whether a payment plan can be arranged. If an agreement is made and the agreed payments are maintained, penalties may be paused from the date you contacted HMRC, although interest and other conditions may apply.

Taking action early is generally better than waiting for penalties to accumulate.

MTD and Bookkeeping: Why Preparation Matters

MTD makes accurate bookkeeping more important than ever.

When your financial records are updated consistently, you can:

• Track business performance

• Identify deductible expenses

• Monitor cash flow

• Prepare quarterly updates more efficiently

• Estimate future tax liabilities

• Reduce accounting errors

• Prepare for your annual tax return

Poor bookkeeping can lead to incorrect quarterly information and make year-end tax preparation more difficult.

For this reason, MTD should be viewed as an opportunity to improve financial management rather than simply another HMRC requirement.

What Changes After 2026/27?

The temporary relaxation for quarterly update penalties only applies to the 2026/27 tax year.

From 2027/28, penalty points will apply when qualifying taxpayers miss quarterly update deadlines. The threshold for taxpayers required to use MTD will be four points, with a £200 penalty once the threshold is reached.

This means businesses should use 2026/27 to establish good digital bookkeeping and reporting habits before the penalty rules become stricter.

Final Thoughts

Understanding MTD penalties in 2026/27 is essential for UK sole traders and landlords affected by Making Tax Digital for Income Tax.

While HMRC is not applying penalty points for late quarterly updates during 2026/27, taxpayers still need to maintain digital records, submit all required quarterly updates and complete their annual tax return on time. Late tax payments can also result in financial penalties and interest.

The best way to stay compliant is to maintain accurate bookkeeping throughout the year, use suitable accounting software and monitor every important deadline.

MyIVA can help UK businesses and self-employed individuals manage their accounting, bookkeeping and tax requirements, making it easier to stay organised and prepared for the changing MTD rules.