MTD for Income Tax: How Firms Can Manage the 2026 Impact

Partners and senior managers across the UK are already feeling the impact of Making Tax Digital for Income Tax (MTD ITSA). After receiving HMRC mandation letters, senior leaders are questioning what it means, whether it applies to them, and what steps to take next. For many firms, these letters arrived during the peak January self-assessment season, adding to an already heavy workload.

MTD for Income Tax is not the only regulatory change; other requests are also demanding attention. This creates a challenging environment for organisational leaders, who must manage the MTD transition alongside other competing demands.

The rollout of MTD ITSA represents one of the most significant compliance changes introduced by HMRC in recent years.

The impact of MTD for Income Tax

The MTD for Income Tax deadline begins in April 2026, with further phases expanding the scope in subsequent years.

MTD for Income Tax represents a fundamental shift in how sole traders and landlords report their income to HMRC. From April 2026, MTD will apply to:

• ​Sole traders and landlords earning £50,000 or more
• ​Around 780,000 taxpayers in the first wave

Instead of one annual self-assessment return, clients in-scope will be required to:

• ​Keep digital records
• ​Submit quarterly updates to HMRC using MTD-compatible software
• ​Complete an end-of-period statement and final declaration

The thresholds will gradually widen:

• ​£30,000+ from April 2027
• ​£20,000+ from April 2028

The operational reality for firms

For many practices, the challenge of MTD ITSA is not just the technical requirements, but the operational disruption it introduces to existing compliance workflows.

Preparation for compliance will need to begin well before April. In reality:

• ​Clients need to be onboarded onto MTD-compatible software well in advance
• ​Processes need to be redesigned for quarterly reporting
• ​Teams need to be upskilled to handle questions and reassurance calls

Many practices report that for every ten clients contacted, around four respond with confusion or concern. Partners describe follow-up calls from clients who are unsure about what action is required or anxious about potential penalties. This has created an immediate spike in unplanned client communication and reassurance work.

With this unplanned activity occurring during one of the busiest periods in the compliance calendar, many partners believe 2026 will be one of the most operationally disruptive years since the introduction of FRS 102.

Increasing compliance change in 2026

The introduction of MTD will not be the only compliance change in 2026. Other changes include:

• ​FRS 102 lease accounting changes
• ​New revenue recognition rules
• ​Capital allowance changes

These changes will require increased data gathering from clients, additional calculations and judgement calls, and increased review time and client explanation, particularly for SMEs unfamiliar with balance-sheet leases.

Each change will have its own learning curve, client communication burden, and internal process impact. Together, they create a cumulative strain that may be difficult to manage.

The importance of automation

Firms that have already automated large parts of their accounts production and corporation tax workflows will be best positioned to manage these challenges. While automation does not solve all the issues introduced by MTD and other compliance changes, it introduces much-needed capacity.

MTD is fundamentally a capacity problem. It requires:

• ​More frequent reporting
• ​More client touchpoints
• ​More onboarding work
• ​More process discipline

Automation will not remove the work burden entirely, but it allows leaders to manage team resources more effectively.

For many firms, accounts production remains one of the biggest time drains in the compliance cycle. When that work is manual, fragmented, or heavily spreadsheet-driven, it absorbs capacity that could otherwise be used to manage new regulatory demands. Compliance automation thus becomes a strategic decision rather than a technical one.

Where Silverfin fits

While Silverfin software does not specifically accommodate income tax, its automated software helps firms reduce the cost and time burden of daily tasks by:

• ​Standardising working papers
• ​Automating accounts production
• ​Streamlining corporation tax workflows
• ​Reducing rework and manual effort

Studies show that firms using Silverfin regularly cut accounts production time by up to 50%. This time saving provides teams with much-needed flexibility, especially when:

• ​Clients are calling about MTD letters
• ​Teams need training on new standards
• ​Partners are juggling multiple regulatory deadlines

What firms should be doing now

Regardless of which software you use, here are practical steps firms can take now:

• ​Audit your current compliance workload: Look across all obligations for 2026, not just MTD. Where is time really being spent?
• ​Identify your biggest capacity drains: For many firms, accounts production is still the area with the highest manual effort and the greatest opportunity for automation.
• ​Don’t delay MTD conversations: Clients receiving letters need clarity now. Even if implementation comes later, reassurance and planning can’t wait.
• ​Streamline where you can, protect where you can’t: You may not be able to simplify MTD itself but you can simplify other parts of your compliance workload to make space for it.

A final thought

MTD for Income Tax is adding pressure to an already demanding compliance landscape. Acknowledging that reality, rather than pretending there’s a silver bullet, is the starting point.

The firms navigating this best aren’t solving everything at once. They’re creating capacity where they can, so they’re better equipped to deal with the changes they can’t avoid.