MTD ITSA Quarterly Reporting: Organise Your Records Before April 2026

What Has Already Changed

Making Tax Digital for Income Tax Self Assessment (MTD ITSA) became mandatory from 6 April 2026 for sole traders and landlords with gross income above £50,000. If that includes you, you are now legally required to keep digital records and submit quarterly updates to HMRC through MTD-compatible software. The old annual Self Assessment return does not disappear entirely, but your reporting obligations have fundamentally changed.

How Quarterly Reporting Actually Works

Under MTD ITSA, you must submit four quarterly updates per tax year, each covering a three-month period. The quarters run to 5 July, 5 October, 5 January, and 5 April, with submissions due one month after each period ends. So your first quarter ending 5 July 2026 must be submitted by 5 August 2026. These updates are summaries of your income and expenses, not full tax returns, but they must come from digitally kept records.

At the end of the tax year you also submit a final declaration, replacing the traditional Self Assessment return. This is where you add any additional income sources and confirm your figures are correct.

The Penalty Regime You Need to Understand

HMRC is applying a points-based penalty system to MTD ITSA. Each missed quarterly submission earns you one penalty point. Once you reach a threshold of four points, you receive a £200 financial penalty. Points expire after 24 months if your compliance improves, but accumulating them quickly is easy if your record-keeping is disorganised. Late or inaccurate submissions can also attract separate inaccuracy penalties, so getting your figures right each quarter matters.

Practical Steps to Organise Your Records Right Now

• Sign up for MTD-compatible software immediately. HMRC maintains a list of approved software providers on GOV.UK. Options include QuickBooks, FreeAgent, Xero, and several others. Your software must be able to send data directly to HMRC via their API.
• Separate your business and personal finances. Open a dedicated business bank account if you have not already. This single step makes reconciling income and expenses dramatically faster each quarter.
• Categorise every transaction as it happens. Do not leave three months of receipts to sort through the week before a deadline. Set aside 30 minutes each week to log income received and expenses paid, using your software's categories.
• Keep digital copies of receipts and invoices. HMRC requires records to be kept digitally under MTD. Most accounting apps include a receipt scanning feature. Use it consistently so you have an audit trail for every claimed expense.
• Reconcile your bank feed monthly. Connect your business bank account directly to your software so transactions import automatically. Review and categorise them at the end of each month rather than waiting until the quarter closes.
• Know which income streams to include. If you have both self-employment income and rental income, both may need to be reported under MTD ITSA if your combined gross income exceeds the threshold. Check whether you need one or two reporting streams in your software.

What If You Have Not Yet Signed Up

If your gross income exceeded £50,000 in the 2024 to 2025 tax year and you have not yet registered for MTD ITSA, contact HMRC or speak to a tax adviser as soon as possible. HMRC has indicated a soft-landing approach during the early months, but this will not last indefinitely and penalty points can accumulate from the first missed submission date.

The £30,000 Threshold Is Coming in April 2027

The government has confirmed that MTD ITSA will extend to sole traders and landlords earning over £30,000 from April 2027. If you are currently below the £50,000 threshold, now is the ideal time to establish good digital record-keeping habits before you become legally obligated. Starting early means fewer headaches and a much smoother transition when your mandation date arrives.

Getting your records organised is not just about compliance. It gives you a clearer picture of your business finances throughout the year, making tax planning and cash flow management significantly easier.