Who Really Profits From Making Tax Digital Software Costs?

George Osborne announced Making Tax Digital in 2016. A decade, three prime ministers, and several U-turns later, the bill has finally arrived, and it is not HMRC who will be paying it.

From April 2026, roughly one million sole traders and buy-to-let landlords with income above £50,000 will be legally required to file five tax submissions a year instead of one, using HMRC-approved third-party software that carries a monthly subscription fee. If you are a plumber in Coventry, a freelance graphic designer in Bristol, or an electrician working across the Home Counties, that is a new recurring cost you have not budgeted for, imposed by a system you probably had not heard of until recently.

This is not a how-to guide. There are plenty of those. This is an attempt to answer the question nobody at HMRC seems particularly eager to address: who actually benefits from Making Tax Digital, and why has a decade of development produced a system that hands a captive customer base directly to private software vendors?

A Decade in the Making, and Still Nobody Knows About It

When Osborne unveiled MTD as part of his 2016 Budget, the pitch was straightforward: digitalise tax records, reduce errors, close the tax gap. The ambition was not unreasonable. HMRC's own figures show that small businesses account for an estimated 60% of the UK's £47 billion annual tax gap, with the self-employed and small partnerships responsible for approximately £5.8 billion of that shortfall.

But here is the part that rarely makes the headlines: HMRC's own analysis attributes the vast majority of that gap not to deliberate fraud, but to errors and carelessness. Ordinary people making honest mistakes on complicated forms. Which raises an obvious question about the cure that has been prescribed.

Despite nearly ten years of development, an IPSE survey found that 70% of sole traders have either never heard of Making Tax Digital for Income Tax or do not understand what it actually requires. For a policy that was supposed to be transformative, that is a remarkable failure of communication. If you are reading this article, you are almost certainly in the minority who have started paying attention.

The Mandate Nobody Asked For

Let us be precise about what MTD for Income Tax actually demands, because the details matter enormously.

From April 2026, if your gross income (not profit, income, the number before you subtract any expenses) exceeds £50,000 from self-employment or property, you must submit four quarterly updates to HMRC each year, plus a final end-of-year declaration. Five submissions instead of one.

That distinction between income and profit is one that will catch people out. A tradesperson turning over £55,000 but spending £20,000 on tools, a van, materials, and insurance has a taxable profit of £35,000. Under the old system, they filed once in January. Under MTD, they file five times a year, using software they are paying for monthly, to report on income that, after allowable deductions, puts them nowhere near the higher-rate tax bracket.

None of that is the most absurd part. The threshold is about to get much lower.

The Threshold Trap: It Gets Considerably Worse

April 2026 is just the opening act. The £50,000 threshold drops to £30,000 in April 2027, and then to £20,000 in April 2028. At each stage, a fresh wave of sole traders is swept into mandatory quarterly reporting.

Robert Salter, a director at Blick Rothenberg accountancy firm, put the absurdity of the 2028 threshold with admirable precision: a small tradesperson turning over £20,000 a year may well have profits below the income tax threshold of £12,570, meaning there would be no tax to pay at all.

Read that again. By 2028, HMRC will legally require some sole traders to purchase software, maintain digital records, and file five returns a year in order to formally confirm that they owe the government nothing whatsoever. They will be paying for the privilege of proving their own innocence.

And like so many other UK tax thresholds, these limits are almost certain to remain static rather than rise with inflation. As earnings creep upward simply to keep pace with the cost of living, the net widens automatically, without Parliament ever having to vote to expand it.

The Software Racket: Why You Cannot Just Use a Spreadsheet

Here is where the story takes a turn that deserves far more scrutiny than it has received.

MTD does not merely encourage the use of digital software. It mandates it. Spreadsheets, even detailed and meticulously maintained ones, do not qualify. HMRC's own online portal, the one you currently use to file your Self Assessment return, will not be available for MTD quarterly submissions either.

You must use HMRC-approved third-party commercial software. Full stop.

The major players, QuickBooks, Sage, FreeAgent, Xero, and others, are queuing up to serve this newly mandated market. Their MTD-compliant packages typically cost between £10 and £30 per month. At the upper end, that is £360 a year in new overhead, for a sole trader who previously filed once a year for free using HMRC's own portal.

Some digital banks, notably Starling, which reportedly saw a 50% surge in new sole trader accounts in 2026, are bundling MTD-compliant software with their business accounts. The word "free" features prominently in the marketing. What features less prominently is the fact that business bank accounts carry their own fees, and that the interest rates on deposits at challenger banks tend to be considerably more modest than the headline figure suggests.

In other words, the software may be bundled, but the cost is merely relocated rather than eliminated.

Understanding which software actually suits your situation is worth doing carefully. See our comparison of MTD software options for sole traders.

The Question HMRC Has Never Satisfactorily Answered

The Office of Tax Simplification was a government body established in 2010 with a specific remit: to identify ways to make the UK tax system less complicated for individuals and small businesses. It was, by most accounts, a modestly useful institution that published thoughtful reviews and occasionally succeeded in nudging HMRC towards more sensible policy.

In 2023, the government quietly abolished it.

The timing is instructive. The body designed to advocate for simplicity was removed in the same period that MTD for Income Tax was being finalised, a reform that will require a million-plus sole traders to buy commercial software and submit quarterly returns to report what are, in many cases, straightforward affairs.

The question that the Office of Tax Simplification might usefully have pressed is one that remains unanswered: why, after a decade of development and presumably considerable investment of public money, has HMRC not built a free, government-provided tool for sole traders with simple financial situations?

HMRC has offered various explanations over the years, largely centred on the complexity of individual tax affairs and the difficulty of building a universal solution. These explanations have a certain logic, but they sit awkwardly alongside the fact that other tax authorities in comparable countries have managed to provide free filing tools, and that the complexity argument conveniently produces an outcome that benefits commercial software vendors to the tune of hundreds of millions of pounds annually.

The FT's Claer Barrett, not a journalist given to hyperbole, described the scheme as "Making Tax Difficult (sorry, Digital)." That parenthetical apology speaks volumes.

Self-Employed People Were Already Carrying More Than Their Share

It would be easier to accept the compliance burden of MTD if the self-employed were not already navigating a more difficult financial existence than their employed counterparts.

Two thirds of self-employed people do not save into a pension, a figure that reflects not fecklessness but the absence of an employer automatically enrolling them and contributing alongside them. Getting a mortgage as a sole trader remains harder and more expensive than it is for a salaried employee with equivalent earnings, because lenders apply stricter scrutiny to variable income. There is no statutory sick pay, no redundancy entitlement, no employer National Insurance contribution on their behalf.

In January 2026, one million people missed the Self Assessment filing deadline. Each received an automatic £100 penalty. That is £100 million in fines collected from people who, in many cases, were simply overwhelmed by admin, not attempting to evade anything. Over 800,000 people are currently on HMRC Time to Pay agreements, repaying tax debts at approximately 8% interest.

These are not the numbers of a population of deliberate tax cheats. They are the numbers of people who find the existing system complicated enough already.

What You Can Actually Do About This

Frustration at institutional absurdity is legitimate, but it does not file your returns for you. So, practically speaking, what does this mean if you are a sole trader currently earning above £50,000?

First, confirm whether you are in scope. The threshold is gross income from self-employment and property, not profit. If you invoice £55,000 but take home considerably less after expenses, you are still caught by the April 2026 wave.

Second, take the software cost seriously as a business expense. The good news is that MTD software subscriptions are legitimately deductible against your tax bill. The less good news is that you still have to pay them first and claim the relief later.

Third, be sceptical of "free" bundled solutions. Run the numbers on any business bank account that offers compliant software as part of a package. Free software attached to a paid account with low interest rates may not represent the saving it appears to be.

Fourth, consider that simpler, more affordable software exists. The MTD market is not limited to the major enterprise-grade platforms charging £25-30 a month for features a self-employed plumber will never use. TapTax is built specifically for sole traders with straightforward affairs: quarterly submissions without the accounting-firm price tag.

If you are trying to understand what the quarterly submission process actually involves, our guide to MTD quarterly updates walks through each step.

The Irony That Writes Itself

HMRC's old advertising slogan was "Tax doesn't have to be taxing." The copywriter responsible for that line presumably did not anticipate a future in which the same organisation would require sole traders to file five returns a year using paid commercial software to prove they owe nothing.

George Osborne started this in 2016 with a promise of simplification. The Office of Tax Simplification that might have kept that promise honest was abolished in 2023. What remains is a system that mandates private software subscriptions, imposes quarterly compliance costs on traders below the tax threshold, and has, after a decade of development, still failed to reach 70% of the people it will affect.

Tax, as it turns out, remains extremely taxing. The only question is who you let charge you for the privilege of dealing with it.

If you want to keep that cost as low as possible, see what TapTax charges compared to the alternatives and make the comparison yourself.