'Almost half' of people miss new August 2026 HMRC legally required deadline

Almost half of the people affected by the new Making Tax Digital (MTD) for Income Tax rules missed the initial filing deadline, according to data released by HMRC. The deadline, set for August 7, 2026, saw just 50.5% of eligible taxpayers complete their first quarterly digital submission on time. With over 864,000 individuals falling under the scope of the initiative, approximately 428,000 were unable to meet the requirement. The MTD for Income Tax, which came into effect in April 2026, marks the largest overhaul of the personal tax system in over three decades. It mandates quarterly digital record keeping and reporting for self-employed individuals, sole traders, and landlords. Previously, these groups were only required to submit one annual tax return. Now, they must file four times a year using approved digital tools, bringing the system closer to real-time financial tracking. Despite being a legal requirement, HMRC has stated that no penalties will be imposed during the first year of the program. This decision was made to accommodate the challenges faced by taxpayers and their accountants during the early stages of implementation. Fraser Campbell, UK head of accountancy and business advisory services at Azets, noted that the transition has been particularly difficult for small businesses already navigating economic uncertainty. According to Fraser, the learning curve for both taxpayers and professionals has been steep. Issues such as HMRC system downtime, registration problems, and the complexity of managing exemptions and deferrals contributed significantly to the high rate of late submissions. He emphasized that while HMRC's penalty waiver is necessary, those who delayed engaging with the new system are likely to face increased difficulties in the future. Those who wait until the final deadline, set for 2027, will find themselves needing to file multiple returns simultaneously. They would be required to complete four filings from the current year alongside the upcoming quarterly submissions and their annual declaration, resulting in a total of nine returns within a 12-month period. This could place a considerable burden on those who did not start preparing earlier. Fraser also highlighted the importance of accurate quarterly submissions, as they serve as the foundation for calculating the correct tax liability at the end of the tax year. Proper preparation ensures that individuals can better manage their finances and avoid potential issues later on. While the new system presents challenges, he acknowledged its benefits, including improved forward tax planning and more efficient year-end processes. The introduction of MTD aims to provide real-time insights into business performance, enabling more informed decision-making. Although the initial phase has been marked by confusion and delays, the long-term goal is to streamline the tax reporting process and enhance transparency. As more taxpayers adapt to the new requirements, the system is expected to become more user-friendly and reliable.