The First Deadline Has Almost Arrived. Now What?
The 7 August 2026 deadline for the first Making Tax Digital for Income Tax quarterly update is almost here. For UK accounting firms, it has been a period of firsts: first client sign-ups, first digital record checks, first submissions through HMRC-compatible software, and, in many cases, first encounters with the practical realities that no amount of preparation fully anticipates.
Whatever your experience of Quarter One has been, it contains information you cannot afford to ignore. The firms that will manage MTD for Income Tax most effectively over the coming months and years are not necessarily the ones that had the smoothest first quarter. They are the ones that treat Quarter One as a learning exercise and use what they discover to build something better before Quarter Two arrives in November.
This post sets out the most common friction points practices are encountering in their first quarter, and the practical steps you can take right now to make Quarters Two, Three, and Four significantly easier.
What Quarter One Is Telling Practices About Their Clients
The single most consistent finding from the opening quarter of MTD for Income Tax is that client readiness varies far more than most firms expected. Even clients who were identified early, contacted promptly, and guided through the sign-up process are arriving at the first deadline with digital records in very different states.
Some common patterns are emerging:
- Clients who said they were keeping digital records but are not. A spreadsheet saved to a desktop does not automatically constitute compliant digital record-keeping under MTD. Some clients have needed urgent support to ensure their records are in a format their software can process.
- Clients with multiple income sources who did not realise each source requires a separate quarterly update. A landlord with both a self-employed trade and a rental property must submit updates for each income stream independently. This has caught a number of clients and their advisers off guard.
- Clients whose gross income sits close to the £50,000 threshold and who are uncertain whether they are in scope. Qualifying income is based on gross receipts before expenses, not profit. This distinction continues to cause confusion, particularly among clients in sectors with high costs such as construction and catering.
Each of these patterns points to a communication gap that can be closed before the next quarter. The question is whether your practice has a systematic way of identifying and addressing them.
The Process Gaps That Quarter One Exposes
Beyond client readiness, the first quarter is also surfacing operational gaps within practices themselves. The most significant tend to fall into three categories.
Data Chasing
Quarterly submissions require up-to-date income and expense records, and many practices are finding that chasing clients for this information is consuming a disproportionate amount of time. Where annual Self Assessment work could absorb a degree of last-minute data gathering, the quarterly cadence leaves far less room for delay.
The solution is not to chase harder. It is to build a structured data collection process that starts earlier in each quarter and uses automated reminders rather than manual follow-up. If your practice management software supports automated client prompts, now is the time to configure them. If it does not, consider whether your current tools are adequate for a quarterly compliance model.
Review Bottlenecks
In many practices, quarterly updates are queuing for review by a small number of senior staff. This creates a bottleneck that did not exist in the annual cycle, where reviews could be spread across a longer window. With every affected client facing the same deadline on the same date, the review workload is concentrated in a narrow period.
Addressing this requires a deliberate look at your review workflows. Consider whether all quarterly updates genuinely require senior review, or whether a tiered approach, with more straightforward submissions reviewed by experienced bookkeepers and only complex cases escalated, would free up senior capacity for higher-value work.
Software and Integration Issues
Some practices have encountered friction between the software clients use to maintain their records and the software the practice uses to prepare and submit quarterly updates. Where these systems do not integrate cleanly, data has to be rekeyed or reformatted, introducing both delay and the risk of error.
If this has been a feature of your Quarter One experience, it is worth addressing before the November deadline rather than tolerating it for the remainder of the year. The cumulative cost of manual workarounds across four quarterly deadlines and a Final Declaration is significant.
Five Steps to Take Before Quarter Two
The gap between the 7th of August deadline and the 7th of November deadline for Quarter Two is just three months. That is not a long window, but it is enough time to make meaningful improvements if you act now.
- Hold a brief internal review. Bring your MTD team together within the next two weeks to capture what worked, what did not, and where the most time was lost. Do this while the experience is fresh. A structured debrief now is worth far more than a retrospective in January.
- Segment your clients by readiness. Identify the clients who required the most support in Quarter One. These are your highest-risk clients for the remainder of the year. Build a targeted support plan for each of them before Quarter Two begins.
- Set up automated reminders for Quarter Two data collection. Do not wait until October to start asking clients for their records. Build a reminder sequence that prompts clients to review and share their income and expense data from the start of the quarter, not the end.
- Clarify the nil update requirement with relevant clients. Any client who is signed up for MTD for Income Tax must submit a quarterly update even if they had no income or expenses in that quarter. A nil update is still a mandatory submission. Make sure every affected client understands this before Quarter Two.
- Review your fee arrangements. If Quarter One has demonstrated that the work involved in managing MTD submissions exceeds what your current fees reflect, address it now. Updating engagement letters and fee structures between quarters is far less disruptive than doing so mid-quarter or at year end.
The Wider Picture: Using MTD Data to Add Client Value
There is a dimension to quarterly reporting that goes beyond compliance, and Quarter One is the first opportunity to explore it. Each quarterly update generates an estimated tax position for the client, visible within HMRC's systems. This is not just a compliance output. It is a planning tool.
Clients who can see a real-time estimate of their likely tax liability throughout the year are better placed to manage their cash flow, time their expenditure, and make informed decisions about their business. As their adviser, you are uniquely positioned to help them interpret and act on that information.
Practices that build a brief quarterly review conversation into their MTD service, covering what the estimated tax position means and what the client might consider doing before the year end, are already differentiating themselves from firms that treat quarterly submissions as a pure compliance exercise. That differentiation has real value, both to clients and to your practice's long-term positioning.
How TaxCalc Supports Your MTD Workflow
TaxCalc's MTD Quarterly Filer is built specifically for practices managing multiple clients through the quarterly submission cycle. It connects directly with HMRC, supports clients at all levels of digital readiness, and integrates with TaxCalc's wider practice management and tax production tools so that your MTD workflow sits within a single, joined-up platform rather than across disconnected systems.
If Quarter One has highlighted gaps in your current software setup, or if you are looking to build a more efficient and scalable process before the volume of MTD clients grows further, we would be glad to show you how TaxCalc can help. Get in touch with the TaxCalc team today.
