title: "Sole trader builder earning over £50k? HMRC wants quarterly reports from Sunday" slug: mtd-itsa-sole-trader-builders-april-2026 date: 2026-03-29 sector: construction tags: [MTD, ITSA, HMRC, sole-trader, builders, construction, Making-Tax-Digital, April-2026] description: From 6 April 2026, sole traders earning £50k+ must switch to Making Tax Digital for Income Tax. Most builders think MTD is for VAT. It isn't anymore. Here's what changes and what you need to do this week.

Sole trader builder earning over £50k? HMRC wants quarterly reports from Sunday

Most sole trader builders have heard of Making Tax Digital. Most assume it's about VAT — something that applied when they registered for VAT years ago. Job done, move on.

That assumption becomes expensive on 6 April 2026.

From this Sunday, MTD for Income Tax Self Assessment (MTD ITSA) becomes mandatory for sole traders and landlords with qualifying income over £50,000. And unlike MTD for VAT, this isn't about quarterly VAT returns. This is about your income tax — sending digital updates to HMRC four times a year instead of once.

What's actually changing

Under the current system, if you're a sole trader you file a Self Assessment return once a year — usually by 31 January. You report your income and expenses, pay your tax, done.

From 6 April, if your qualifying income exceeds £50,000, that annual report becomes four quarterly digital updates, plus a final declaration at year end. You'll need HMRC-compatible software to file. You can no longer do it through the standard HMRC online service.

Construction News confirmed on 18 March 2026: "From 6 April, HMRC will require many small builders to sign up for its Making Tax Digital (MTD) for Income Tax programme."

This isn't speculation. The deadline is real and it's this week.

Why construction is particularly exposed

The awareness gap in construction is significant. Here's why builders and tradespeople are being caught out:

1. "MTD is for VAT" — the most common misconception When HMRC rolled out MTD for VAT in 2019 and 2022, construction businesses got used to digital VAT filing. Many assumed that was the full scope of MTD. It wasn't — MTD for Income Tax has been coming for years, and it's now here.

2. Cash-intensive trades often underestimate income If you're a sole trader builder taking a mix of cash and BACS payments, it's easy to lose track of whether you're above or below the £50,000 threshold. But HMRC is increasingly cross-referencing CIS returns, bank data, and other sources. If they think you're over the threshold, expect a letter.

3. Many sole traders don't have compliant software A spreadsheet won't cut it for MTD ITSA. You'll need software approved by HMRC — QuickBooks, FreeAgent, Xero, or similar. If you're still running your books on Excel or paper, you have a few days to sort this.

~860,000 sole traders affected nationally

HMRC estimates around 860,000 sole traders nationally are affected by the April 6 MTD ITSA threshold. A high proportion of those are in building, construction, and the trades.

If you're a sole trader:

• Earning over £50,000 in qualifying income (turnover, not profit)
• In any building or trades business — builder, electrician, plumber, decorator, roofer, joiner
• Currently filing Self Assessment once a year

You're almost certainly in scope.

What happens if you miss it

Missing the MTD ITSA deadline doesn't trigger an immediate prosecution. But it does put you on HMRC's radar in an unhelpful way:

• Automatic late filing penalties once quarterly deadlines pass
• Points-based penalty system — accumulate enough points and you face fixed penalties
• Increased scrutiny — non-compliance with MTD often triggers wider reviews of your tax affairs

HMRC is investing heavily in enforcement. The April 6 deadline is the biggest expansion of MTD since VAT, and they want it to stick.

Three things to do this week

1. Check if you're above the threshold Add up your total qualifying income for the last tax year. If it's over £50,000, you need to act now.

2. Get compatible software HMRC has a list of approved MTD ITSA software providers. FreeAgent is popular with tradespeople. QuickBooks and Xero both have sole trader plans. Most have free trials.

3. Register for MTD ITSA with HMRC You need to sign up through HMRC's online service before you can start filing digitally. Your accountant can do this if you have one — call them this week.

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ComplianceAlert tracks HMRC deadlines including MTD ITSA, CIS obligations, and employment law changes. For sole traders in construction, that means one dashboard showing everything that's changing — not a stack of HMRC letters to decode.

Start free at compliancealert.co.uk — includes your personalised compliance dashboard for the construction sector.

Take our free Compliance Score quiz: compliancealert.co.uk/compliance-score

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FAQ: MTD ITSA for sole trader builders

Q: Does this apply if I'm VAT registered? A: Yes. MTD for VAT and MTD for ITSA are separate. Being VAT-registered and filing digital VAT returns doesn't exempt you from MTD ITSA.

Q: What if my income fluctuates above and below £50,000 year to year? A: HMRC's current guidance is that you're mandated based on qualifying income. If you drop below the threshold in a future year, there's a process to exit. But if you're above it now, you need to comply from April 6.

Q: My accountant handles everything — do I still need to worry? A: Your accountant should be aware of MTD ITSA, but many small business clients haven't been proactively warned. Call your accountant this week and confirm they've enrolled you.

Q: I'm a limited company contractor — does this apply to me? A: MTD ITSA applies to sole traders and landlords, not limited companies. If you operate through a limited company, your exposure is different (MTD for Corporation Tax is coming later). However, you still have CIS and other April 6 obligations to check.