Making Tax Digital (MTD) for Income Tax is changing how people across the UK report their earnings. The first important step in this system is the quarterly update deadline on 7 August 2026. For many sole traders and landlords, this marks a shift away from yearly tax returns to a more structured digital reporting approach.
MTD supports better financial control by encouraging regular record keeping and reporting. And this new system has been introduced to improve accuracy and reduce errors. Instead of preparing all financial records at the end of the year, individuals are now expected to keep digital records and submit updates every three months. This approach helps maintain better organisation and gives a clearer view of financial activity throughout the year.
What the First MTD Quarterly Update Means
Understanding the Reporting Requirement
The first quarterly update is a summary of your income and allowable expenses over a three-month period. It is important to understand that this is not a full tax return, but rather a regular update to HMRC based on your digital records.
If you follow the standard UK tax year starting on 6 April 2026, your first reporting period will usually run until 5 July 2026. You must then submit your update by 7 August 2026. However, reporting periods can vary depending on your accounting method, so it is important to confirm your own dates.
During this update, you provide total figures for your income and expenses. You are not required to calculate your final tax bill at this stage, although your software may give you an estimate to help with planning.
Digital Record Keeping Requirements
What You Need to Maintain
Under MTD, keeping digital records is essential. You must maintain accurate records of all income and expenses throughout the year. Each transaction should include key details such as the date, the amount, and the correct category, for example travel, materials, or rent.
You can keep these records using MTD-compatible accounting software or by using spreadsheets connected to bridging software that allows submission to HMRC. While you only submit summary totals, your detailed records must always be complete and accurate in case they are reviewed.
What You Need to Submit by 7 August 2026
Summary of Income and Expenses
To meet the first quarterly deadline, you are required to submit a summary of your total income and allowable expenses. This includes all earnings from self-employment and property income, along with the relevant business or rental expenses.
Expenses should be grouped into appropriate categories, such as materials, travel, office costs, repairs, or professional fees. Although individual transactions are not submitted, the totals must be based on accurate and up-to-date digital records.
It is also important to understand that this submission does not finalise your tax position. Adjustments and final calculations are completed later in the process.
What Happens After Quarterly Updates
End of Period Statement and Final Declaration
Quarterly updates form only part of the overall MTD process. After submitting your updates, you will need to complete an End of Period Statement. This step finalises your business income and includes necessary accounting adjustments, such as capital allowances.
You will also need to submit a final declaration. This confirms all your income for the year, including business income, employment earnings, and any investments. The deadline for this remains 31 January following the end of the tax year, similar to the current system.
How to Prepare for the Deadline
Building Good Record Keeping Habits
Preparing early will make the August 2026 deadline much easier to manage. You should ensure that your software is MTD-compliant and capable of submitting updates directly to HMRC. It is equally important to record income and expenses regularly, rather than leaving everything until the end of the quarter.
You should also check your records against your bank statements to ensure all transactions are included and accurate. Taking time to review your data before submission will help you avoid errors and ensure that your figures are complete. Understanding your reporting period in advance will also help you stay on track and avoid missing deadlines.
Common Mistakes to Avoid
Staying Accurate and Compliant
Many people face similar challenges when submitting their first quarterly update. Errors often occur when records are incomplete or left until the last minute. Using software that is not compatible with MTD can also cause problems when trying to submit updates.
Some individuals overlook smaller expenses, which can affect the accuracy of their totals over time. Another common issue is failing to categorise transactions correctly, which is an important requirement under MTD. Taking time to maintain accurate and organised records will help prevent these problems.
Key MTD 2026 Dates
Making Tax Digital begins on 6 April 2026 for individuals earning over £50,000. The first quarterly update must be submitted by 7 August 2026, followed by additional updates in November, February, and May. The final declaration deadline remains 31 January 2027. The system will later expand to include individuals earning over £30,000 from April 2027 and over £20,000 from April 2028.
It is important to note that exact reporting dates may vary depending on your accounting period.
| Date | What Happens |
| 6 April 2026 | Making Tax Digital starts for sole traders and landlords earning above fifty thousand pounds |
| 7 August 2026 | Deadline for the first quarterly update covering the period from early April to early July |
| 7 November 2026 | Second quarterly update must be submitted to HMRC |
| 31 January 2027 | Final declaration deadline for the tax year, replacing the traditional Self Assessment return |
| 7 February 2027 | Third quarterly update submission deadline |
| 7 May 2027 | Fourth quarterly update must be completed |
| 6 April 2027 | Rules expand to include individuals earning over thirty thousand pounds |
| 6 April 2028 | Further expansion applies to those earning above twenty thousand pounds |
Penalties and Compliance
Understanding the Rules
Under MTD, late submissions are managed through a points-based penalty system. Each missed deadline results in penalty points, and once a certain level is reached, financial penalties apply. Keeping accurate records and submitting your updates on time will help you avoid these penalties and remain compliant.
Final Thoughts
The first MTD quarterly update deadline on 7 August 2026 is a key step in the move towards digital tax reporting. While the process may seem new, it becomes much easier once you develop a consistent routine.
By keeping your records up to date, using the right tools, and understanding your responsibilities, you can manage the transition with confidence. Over time, this approach will not only support compliance but also improve how you manage your finances.
Contact Us
Preparing for your first MTD quarterly update in August 2026? Get expert guidance to understand your requirements, organise your records properly, and submit accurate updates on time. Early preparation can make the process smoother and help you stay fully compliant.
Contact us on 020 7112 9098, email info@accountancyntax.co.uk, or visit www.accountancyntax.co.uk to find out more.
