Update from HMRC on MTD testing

by Aitch, posted in Income Tax

HMRC has published a new Making Tax Digital newsletter. This newsletter is mainly intended for taxpayers and agents who are currently testing the Making Tax Digital for Income Tax (MTD for IT) system. MTD for IT will become mandatory in phases from April 2026.

For nearly two years, HMRC has been stress-testing its MTD for IT systems to ensure they can support increasing numbers of volunteer taxpayers. So far, HMRC has confirmed that testing has successfully deal with:

  • The sign-up process works for individuals and agents, including those with non-standard accounting periods.
  • Volunteers can make and edit quarterly submissions and add income sources.
  • Volunteers can opt out of quarterly obligations.
  • PAYE income pre-populates into estimated payments on account.
  • Payments are correctly allocated within MTD for IT.

More recent testing in 2025 as HMRC scales up the rollout include:

April–June 2025

  • Re-testing sign-up to confirm it can cope with larger volumes.
  • Testing the ability for volunteers to appoint multiple agents (one for quarterly returns and one for end-of-year submissions).

July–September 2025

  • Ensuring taxpayers and agents can make their first quarterly update via software completing the quarterly requirement.
  • Checking the accuracy of estimated payments on account based on income to date.
  • Testing key functions in the digital tax account, such as adding or stopping income sources and opting in or out of the service.

During the testing phase, there are no penalties for late submissions, but submitting on time is encouraged by HMRC as it helps those testing the system understand the requirements and allows for the service to be properly stress tested.

If your qualifying income is over £50,000 in the 2024–2025 tax year, you will be required to start using MTD for IT from 6 April 2026. There are some minimal exemptions in place.

Source:HM Revenue & Customs | 01-12-2025
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Aitch
I'm Aitch, the Founder and CEO of CIGMA Accounting Ltd. As a Chartered Management Accountant and as a CIMA member, I've spent more than 16 years helping businesses, entrepreneurs, landlords, and individuals with tax planning, accounting, and HMRC compliance. As a chartered accountant in London, I'm passionate about making complex tax matters easier to understand and helping clients make confident financial decisions. Over the years, I've advised start-ups, SMEs, established companies, and high-net-worth individuals across a wide range of tax and accounting matters. My expertise includes Corporation Tax, Self-Assessment, Capital Gains Tax, Inheritance Tax planning, R&D tax relief, capital allowances, international tax, and resolving complex HMRC compliance issues. Whether clients need a business accountant, tax accountant, or strategic tax advisor, my focus is always on delivering practical advice that creates long-term value. One of my specialist areas is Making Tax Digital (MTD). I've worked extensively with businesses preparing HMRC's digital reporting requirements, helping them move to cloud accounting, improve financial processes, and adopt technology that makes compliance more efficient. I regularly speak at Making Tax Digital roadshows, industry events, and educational sessions in collaboration with Zoho Books, sharing practical insights into digital accounting, tax legislation, and the future of the profession. Many business owners looking for the best accounting firm in London are not simply searching for an accountant they're looking for trusted advice, responsive support, and long-term value. That's the approach I've taken in building CIGMA Accounting. My team and I work closely with businesses across London and the UK, providing accounting services, tax advisory, bookkeeping, payroll, VAT, company accounts, and strategic tax planning tailored to each client's goals. Through this website, I share practical guidance on UK taxation, Making Tax Digital, HMRC updates, Corporation Tax, Self-Assessment, and business finance. My aim is to provide reliable, straightforward information that helps business owners understand changing regulations, reduce compliance risks, and make informed financial decisions with confidence.
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