Is MTD ITSA Bridging Software Still a Viable Option in 2026?
Picture a sole trader you’ve worked with for years who sends you a spreadsheet every January. It lists 12 months of income and expenses, along with a few notes about missing receipts. You review the numbers, prepare the tax return, and your job is finished for another year.
Many accountants plan to keep using spreadsheets with MTD ITSA bridging software, just as they did for VAT. But the real question is whether that approach will actually work once quarterly reporting becomes routine.
What HMRC Requires Under MTD ITSA
MTD ITSA introduces a completely different reporting structure. From April 2026, sole traders and landlords earning over £50,000 must keep digital records and submit four updates each year through software connected to HMRC. This threshold drops to £30,000 in April 2027.
These quarterly tax updates summarise income and expenses for the period. Previously, HMRC planned to issue a separate “End of Period Statement” (EOPS), but it has since simplified the rules. Now, you only need to submit the four quarterly updates, followed by a Final Declaration for MTD ITSA, to bring everything together.
Previously, HMRC planned to issue a separate “End of Period Statement” (EOPS), but it has since simplified the rules
HMRC also has strict rules on “digital links.” If your data moves between spreadsheets or software, there must be a digital connection. Manually typing totals from one spreadsheet into a submission form is not allowed; the data must flow automatically from HMRC bridging tools for spreadsheets to the final filing.
How MTD ITSA Bridging Software Connects Spreadsheets to HMRC
MTD ITSA bridging software acts as the link between your spreadsheet and HMRC. The software reads the totals from your sheet and sends them via an API.
If you already have structured spreadsheets that you and your clients are comfortable with, bridging software is a valid way to file. You don’t have to replace the spreadsheet workflow; the bridging tool handles the “submission” step. HMRC still recognises this as a compliant method for MTD.
Where MTD ITSA Bridging Software Starts Creating Problems
The difficulty doesn’t come from the filing itself. It comes from the preparation work that must be done four times a year.
Let’s say you manage forty sole trader clients. Each one keeps records in a spreadsheet and sends you an update every quarter. Before you can submit anything through bridging software, you still have to review the transactions, fix the categories, and check the totals.
Even if each quarterly review takes only thirty minutes, those forty clients now create eighty hours of preparation work every single year before you even start the submissions.
The bridging tool does its job perfectly, but it doesn’t reduce the bookkeeping work.
When MTD ITSA Bridging Software Still Makes Sense
Despite these limits, bridging software for MTD ITSA still has its place. For example, a landlord with a single property. They might only have two or three transactions a month. If those records are already organised in a spreadsheet, using an HMRC-recognised bridging tool is likely the most practical and cost-effective option.
In these cases, the workload stays manageable because the transaction volume is low. The spreadsheet is easy to maintain, and the submission only takes a few minutes. The challenge only really appears when transaction volumes grow or when you are managing a large portfolio of similar clients.
MTD ITSA Bridging Tools that Help Prepare the Records
Accounting firms often spend hours preparing and rechecking spreadsheets before filing. Most HMRC bridging tools for spreadsheets only submit totals. They do not help with the records behind the numbers. Missing entries, wrong categories, or duplicate figures can easily pass through and later lead to HMRC penalties or difficult conversations with clients.
You can use HMRC-recognised MTD bridging software UK, such as Acxite. It allows you to file HMRC updates while still working in spreadsheets. It also helps organise records and prepare reports, so the figures are ready before submission.
Wrapping Up
The short answer is that MTD ITSA bridging software is still viable in 2026, but only for specific clients. If a business has very low transaction volumes and a very organised spreadsheet, bridging software is a great, compliant tool.
However, for practices managing larger portfolios, relying entirely on spreadsheets will create a massive backlog once quarterly reporting begins.
Review your current client list and identify the ones who will generate the most quarterly review work.
Moving those clients onto a purpose-built platform before the April 2026 deadline removes that pressure before it builds. Accounting firms that make the switch early will spend the first MTD ITSA deadline reviewing submissions rather than chasing spreadsheets.
Ready to file MTD ITSA updates without spreadsheet chaos?
Connect your spreadsheets with Acxite and submit your returns with organised records.