Making Tax Digital is not a future initiative anymore. It is active legislation with live deadlines, a penalty regime that has already started, and HMRC enforcement that is ramping up across VAT, Income Tax, and Corporation Tax. Businesses that assumed they had more time are finding out they do not.
The question most finance teams are now asking is not whether MTD applies to them. It is what happens if their software is not ready when the deadline passes, and how quickly they can fix it.
This post covers what MTD requires, what the consequences of non-compliance look like, and what getting ready actually involves.
What Making Tax Digital Requires
Making Tax Digital is HMRC’s programme to move business tax record-keeping and submission onto compatible digital software. The requirement is not just to file digitally. It is to maintain digital records throughout the period and submit using software that connects directly to HMRC’s systems via API.
Copying figures from a spreadsheet into HMRC’s online portal does not meet the requirement. Emailing records to an accountant who files manually does not meet the requirement. The digital link must be unbroken from the point of transaction capture through to the submission that reaches HMRC.
MTD for VAT has applied to all VAT-registered businesses since April 2022. Any business with a VAT registration number is already within scope and should already be filing through compatible software. If it is not, it is operating outside the rules now, not at some future point.
MTD for Income Tax Self Assessment applies from April 2026 for sole traders and landlords with qualifying income above £50,000, and from April 2027 for those above £30,000. Affected businesses will need to submit quarterly updates to HMRC rather than a single annual return, with a final declaration at year end.
MTD for Corporation Tax is in consultation. A mandated start date has not been confirmed, but the direction is clear and businesses with complex structures should be watching the timeline closely.
What Happens If Your Software Is Not Ready
Non-compliance with MTD does not sit in a grey area. HMRC’s penalty framework for MTD is specific, and it applies from the point the requirement becomes active for your business.
Late submission penalties under MTD for Income Tax use a points-based system. Each missed quarterly submission adds a penalty point. Reach the threshold and a financial penalty applies. The threshold for quarterly filers is four points, at which point a £200 penalty is charged. Points expire after 24 months if submissions are kept up to date, but they accumulate quickly if a business misses multiple quarters.
Late payment penalties follow a separate structure. A first penalty of 2% applies on tax unpaid 15 days after the due date. A second 2% penalty applies on tax still unpaid after 30 days. From day 31, a daily rate of 4% per annum accrues on the outstanding balance. These penalties apply regardless of whether the non-payment was related to software issues or record-keeping failures.
Digital record-keeping failures carry their own exposure. If HMRC investigates and finds that a business was not maintaining digital records in the required format, the investigation itself creates cost and disruption beyond any formal penalty, and findings of careless or deliberate non-compliance carry additional consequences.
For MTD for VAT, businesses that continued filing through the old portal after the mandatory date have already been outside the rules. HMRC has been issuing compliance letters to businesses identified as non-compliant, and the volume of those letters is increasing as HMRC’s data matching capability improves.
The Software Requirement Is Specific
Not every accounting tool qualifies as MTD-compatible software. HMRC maintains a list of recognised software providers, and the software must be capable of maintaining digital records, performing tax calculations, and submitting directly to HMRC via the API.
Spreadsheets alone do not qualify. A business using Excel to manage its VAT records and then manually entering figures into HMRC’s online service is not MTD-compliant, regardless of how accurate the underlying records are.
Bridging software exists as a transitional option, connecting spreadsheet data to HMRC’s API to create a digital link. HMRC has accepted this approach, but it is not a long-term solution. Businesses using bridging software are compliant in the narrow sense, but they are still managing records in a format that does not scale and adds a step to every submission cycle.
The stronger position is software that maintains digital records natively, calculates the tax position from those records, and submits directly without an intermediate step.
Why Businesses Are Not Ready
The MTD deadlines have been delayed multiple times over the past several years. Those delays created complacency. Businesses that prepared and then stood down when a deadline moved found it difficult to rebuild momentum when the next date arrived. Finance teams already stretched across year-end, audit cycles, and operational reporting did not prioritise a compliance project for a mandate that had moved before.
The second reason is software inertia. Changing accounting software mid-cycle is disruptive, and many businesses delayed the decision hoping their existing system would add MTD compatibility. Some did. Others added it as a surface feature without rearchitecting the underlying record-keeping to genuinely meet the digital link requirement.
The third reason is misunderstanding scope. Some businesses believed MTD for VAT did not apply to them because they filed below the old £85,000 threshold. Since April 2022, the threshold is zero. All VAT-registered businesses are in scope.
How Quickly Can a Business Get Ready
The honest answer depends on the current state of the business’s record-keeping and what software it is running.
A business already using cloud accounting software from a recognised MTD provider may only need to activate the MTD submission feature and ensure its digital record-keeping meets the standard. That can happen quickly if the records are in order.
A business running legacy desktop software, spreadsheets, or a system that does not connect to HMRC’s API faces a more significant change. Data migration, staff training, and the disruption of switching platforms mid-period all take time. The longer that process is delayed, the more of the compliance gap accumulates.
For businesses within scope of MTD for Income Tax from April 2026, the time to act is now, not in the quarter before the deadline. Quarterly submissions require the business to have its record-keeping structured correctly from the start of the period, not retrospectively.
What Getting MTD-Ready With Monesize Core Involves
Monesize Core connects to HMRC’s MTD API directly. VAT returns, quarterly updates under MTD for Income Tax, and future Corporation Tax submissions all go from the platform to HMRC without bridging software or manual data transfer.
Digital record-keeping happens inside the platform at the transaction level. Every sale, purchase, and payment is recorded with the detail HMRC requires, and the VAT position is calculated from those records automatically. At submission time, the return is generated from the existing data and submitted through the MTD API.
For businesses with branch structures, Monesize Core aggregates transaction data across locations into a single compliant submission. VAT records from multiple branches feed into one return without manual consolidation.
The HMRC module activates the MTD connection. The Accounting module maintains the digital records. The Analytics module gives finance teams visibility over the VAT position throughout the period, not just at submission time, so there are no surprises when the return is due.
Implementation timelines vary depending on the complexity of the business and the state of its existing records, but Monesize Core’s onboarding process is structured to get businesses operational quickly. For businesses facing an imminent deadline, urgent onboarding is available.
The Businesses Most at Risk Right Now
Three categories of business carry the highest MTD risk in the current environment.
The first is VAT-registered businesses still using non-compatible software or spreadsheets. These businesses are already non-compliant and the clock is running.
The second is sole traders and landlords with income above £50,000 who have not begun preparing for the April 2026 MTD for Income Tax deadline. Getting records into a compliant system before the first quarter of the new tax year requires decisions that need to happen now.
The third is businesses that switched software but did not verify that their new system genuinely meets the digital link requirement end to end. Compatibility with HMRC’s API is a minimum. The record-keeping architecture needs to meet the standard as well.
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MTD Compliance Is a System Decision, Not a Filing Decision
The framing of MTD as a submission requirement misses the more important point. HMRC is not just changing how businesses file. It is changing how businesses are required to keep records throughout the period.
A business that views MTD as a filing problem will look for the cheapest and fastest route to submission compliance. A business that understands it as a record-keeping requirement will build or adopt a system that maintains those records correctly from the transaction level up.
The second approach is more work upfront. It is significantly less work across every subsequent reporting period, and it removes the exposure that comes from holding records in a format that does not meet the standard.
Get MTD-Ready Before the Deadline Passes
Monesize Core connects directly to HMRC’s MTD API and maintains digital records at the transaction level across VAT, Income Tax, and future Corporation Tax requirements. Businesses already behind can get compliant quickly. Businesses approaching the April 2026 deadline can get structured correctly before the first quarter begins.
Get MTD-ready in weeks, not months. Request an urgent demo.