Business Accounting App: What Changes When MTD Is Live

Every tradesperson who crossed the £50,000 income threshold is already inside Making Tax Digital as of 6 April 2026. If your business accounting app has not changed how it works since last year, you may be using the wrong tool for a compliance regime that is very much switched on.

Business Accounting App

A software application that records income and expenses, generates financial summaries, and (for MTD-compliant tools) submits quarterly updates and supports the annual tax return to HMRC. Under Making Tax Digital for Income Tax, sole traders earning over £50,000 must use HMRC-recognised software from 6 April 2026.

The Gap Between 'Accounting App' and 'MTD-Compliant App'

Search 'business accounting app' and you will find hundreds of results. Most of them will show you clean dashboards, animated invoice templates, and testimonials from smiling café owners. What they will not lead with is whether the app can actually do what HMRC now requires of you.

That gap matters enormously if your self-employment income sits above £50,000. Since April 2026, HMRC requires you to:

• Keep digital records of all income and expenses
• Submit four quarterly updates to HMRC each tax year (essentially a running summary of your profit position)
• File your annual Self Assessment tax return through compatible software by 31 January following the end of the tax year

Note that last point carefully. Some software vendors have been vague about this, and the confusion has spread. Quarterly updates are not returns. They are summaries. You still file a full tax return at year end, the same as before, just through compatible software rather than the old HMRC portal. For the 2026/27 tax year, that return is due by 31 January 2028.

An accounting app that handles your invoices beautifully but cannot connect to HMRC's MTD systems is not a business accounting app for 2026 onwards. It is half an app.

What Sole Traders Actually Need from a Business Accounting App in 2026

Strip away the marketing and a sole trader earning £60,000 as an electrician or freelance consultant needs four things from a business accounting app. Just four.

1. Digital record-keeping that satisfies HMRC

HMRC's MTD rules require that records are kept digitally from the point of transaction. That means logging income and expenses in software, not writing them in a notebook and typing them up later. The app needs to store categorised records that map to HMRC's property and trading income categories.

This does not need to be complicated. For most sole traders, it means logging who paid you, how much, and when - plus recording what you spent and what category it falls into (materials, travel, insurance, and so on). The app should handle the categorisation prompts and store everything in a format that feeds directly into your quarterly updates.

2. Quarterly update submission to HMRC

This is the feature that separates MTD-compliant tools from general accounting apps. The app must connect to HMRC's API and submit your quarterly summaries on time. The four submission windows for the 2026/27 tax year run:

• Quarter 1: 6 April to 5 July 2026 (deadline: 5 August 2026)
• Quarter 2: 6 July to 5 October 2026 (deadline: 5 November 2026)
• Quarter 3: 6 October to 5 January 2027 (deadline: 5 February 2027)
• Quarter 4: 6 January to 5 April 2027 (deadline: 5 May 2027)

If your app cannot submit these updates directly to HMRC, you are either bridging through separate software (adding friction and cost) or non-compliant.

3. Annual tax return support

Your Self Assessment return still needs filing after the tax year ends. Through MTD software, this is sometimes referred to as the final declaration, though it is functionally the same process: you confirm your figures, add any additional income sources (dividends, rental income, employment income), apply reliefs, and submit. HMRC uses the quarterly data you have already sent as a starting point, which makes the year-end process faster than it used to be - provided your quarterly records are accurate.

A good business accounting app should populate your year-end figures automatically from your quarterly submissions, reducing the risk of discrepancies.

4. Straightforward bank statement import

Reconciling what went through your account with what you have recorded in the app is essential for accurate quarterly updates. TapTax, for example, supports CSV import with presets for 16 UK banks, covering the accounts most sole traders and small business owners actually use. You download your statement, import it, and match transactions to records. It is not glamorous but it is exactly what most tradespeople need: a reliable, low-friction method that does not depend on live bank connections that can drop without warning.

If you are evaluating other apps, look for how they handle bank data import specifically. Some charge separately for it; others restrict it to premium tiers.

The Pricing Trap: Enterprise Features Sold to Sole Traders

Here is where frustration is most legitimate. The major business accounting app providers, Xero, QuickBooks and FreeAgent among them, have built products that solve problems most sole traders do not have. Multi-currency invoicing, payroll for twenty staff members, project profitability tracking, inventory management. These are real features with real use cases. They are not your use case if you are a plumber with three employees or a freelance graphic designer billing in sterling.

Yet those features determine the subscription tier you are pushed towards, because the MTD-specific functionality - quarterly updates, HMRC API connection - is frequently reserved for plans that also bundle the enterprise features. You end up paying for the warehouse management module to get access to the tax compliance tool.

As we noted in Best Accounting Software for Self-Employed UK: Strip It Back, the right question is not 'which app has the most features?' but 'which app has the features I will actually use, without the ones I will subsidise but never touch?'

For a sole trader turning over £60,000 a year, a business accounting app needs to be MTD-compliant, easy to use on a phone between jobs, and affordable enough that the monthly fee does not sting. That is a narrower brief than most products are designed around.

The Feature You Should Actually Test Before Buying

Most sole traders evaluate accounting apps by logging in to the demo, clicking around the invoicing screen, and deciding it looks clean enough. Almost nobody tests the HMRC submission flow before they buy, because it is not available in trial mode.

That is a significant omission. The invoicing screen in most apps is similar. The MTD submission experience varies enormously. Some apps make quarterly updates a one-click confirmation once your records are complete. Others route you through a confusing series of reconciliation screens, ask you to confirm figures you have no way of verifying without an accountant, and then time out the HMRC API connection mid-submission.

Before committing to any business accounting app for MTD compliance, ask the vendor specifically: how does the quarterly update submission work? How long does it take? What happens if the submission fails? Is there a test mode?

If the sales team cannot answer those questions clearly, that is diagnostic information.

What Happens If You Are Using the Wrong App Right Now

If you are already inside MTD (income over £50,000 since April 2026) and your current business accounting app does not support quarterly submissions, you are not automatically penalised on day one. HMRC introduced a soft-landing period for the first year of MTD, with penalties for late or missing quarterly updates initially applied with more lenience. That grace window is narrowing. The expectation from HMRC is that all qualifying sole traders are now using compliant software and submitting quarterly updates.

Missed quarterly updates can attract penalties under the new points-based system. Each missed submission adds a point to your record. Reach four points and a £200 penalty is triggered, with further £200 penalties for each subsequent failure. It is not the catastrophic fine that VAT surcharges once were, but it compounds. And the reputational signal to HMRC of repeated failures is not one any sole trader wants.

For context on what late submission looks like in practice, Submit VAT Return Late? Here Is What It Actually Costs covers the mechanics of HMRC's penalty regime in detail, much of which now applies to income tax quarterly updates too.

Switching Apps Mid-Year: Is It Worth the Disruption?

If you are six months into the 2026/27 tax year and your current app is not compliant, the question is whether to push through to April 2027 or switch now. The honest answer depends on how much historical data you have, how well your current records are organised, and whether you can transfer your year-to-date figures cleanly.

Most MTD-compliant apps, including TapTax, allow you to enter or import opening balances and year-to-date income and expense figures manually or via CSV. That means switching mid-year is feasible if your records are in reasonable shape. What you want to avoid is arriving at the Quarter 3 or Quarter 4 deadline with an app that cannot submit to HMRC and scrambling to reconcile months of transactions under time pressure.

If you have already missed a quarterly update or are unsure whether your submissions have gone through correctly, check your HMRC online account directly. HMRC's MTD service shows submitted updates and their status.

For a broader look at how compliant software has held up under real conditions, Top MTD Software Tested: What Sole Traders Actually Found is worth reading alongside this post.

People also ask

Does a business accounting app need to be MTD-compatible for MTD?

Yes, if you are within the MTD for Income Tax regime (income over £50,000 since April 2026), your software must be HMRC-recognised and capable of submitting quarterly updates via HMRC's API. Generic accounting apps that only handle invoicing and expense tracking are not sufficient on their own. HMRC maintains a list of recognised software providers on its website.

Can I use a free business accounting app for MTD compliance?

A small number of free or low-cost tools are HMRC-recognised for MTD. However, fully free options with complete MTD submission capability are rare. Most providers reserve quarterly update submission for paid tiers. It is worth comparing what each plan actually includes rather than assuming the entry-level price covers MTD compliance.

Do quarterly updates replace my Self Assessment tax return?

No. Quarterly updates are summaries of your income and expenses sent to HMRC four times a year. You still submit a full Self Assessment tax return after the tax year ends, now called the final declaration under MTD. For the 2026/27 tax year, this return is due by 31 January 2028.

What is the best business accounting app for a sole trader earning £60,000?

The best app for a sole trader at that income level is one that is HMRC-recognised for MTD, covers quarterly update submission without expensive add-ons, and keeps the interface simple enough to use between jobs. Apps built for small limited companies or multi-employee businesses often include features you will pay for but never use.

The Bottom Line on Choosing a Business Accounting App in 2026

The question you asked when choosing a business accounting app in 2022 was probably: 'does it do invoicing and expenses?' The question you need to ask in November 2026 is: 'does it submit quarterly updates to HMRC, support my annual tax return, and charge me only for what I will actually use?'

MTD is live. The first full tax year under the regime is halfway through. If you are a sole trader with income over £50,000 and your accounting app cannot talk to HMRC's API, you are not running a compliant business, whatever else the dashboard tells you.

TapTax was built specifically for sole traders inside MTD: quarterly updates to HMRC, annual tax return support, CSV bank statement import for 16 UK banks, and pricing that reflects what a self-employed tradesperson actually needs rather than what a mid-sized company's finance team requires. If you have been meaning to sort this since April and have not quite got there, today is a reasonable day to start.

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