MTD is here. What sole traders must actually do now.

There was a letter from HMRC on the dashboard of the van. Maybe it’s still there. It said “Making Tax Digital” and you decided that was a Future You problem.

Future You has arrived. MTD for Income Tax went live on 6 April 2026, and the first quarterly deadline — 7 August — has already been and gone.

Here’s the good news, in one line: it’s less scary than the letter made it sound. Here’s the rest of the good news: HMRC isn’t charging penalty points for late quarterly updates this first year. So if you missed 7 August, you haven’t been fined. You do still have to send it.

This is MTD explained simply — no jargon, no scare tactics, just what you have to do and when.

What is Making Tax Digital for Income Tax?

Making Tax Digital for Income Tax (MTD for short) is HMRC’s new way of running Self Assessment.

Instead of one big tax return scramble every January, HMRC now wants two things from you:

1. Digital records of your income and expenses — kept on software, not on the back of a fag packet.
2. A short summary every three months — they call it a quarterly update — so the taxman sees roughly how you’re doing through the year, not just at the end.

That’s it. That’s the whole idea.

Do you need to do it yet?

Probably the most important bit, because some of you reading won’t need to do a thing this year.

You only need MTD for Income Tax if you’re already registered for Self Assessment, you’ve submitted a tax return, and you earn money as a sole trader or a landlord. Whether you’re in comes down to your qualifying income — that’s your total turnover from self-employment and property, before you take any expenses off. The bigger number. Not your profit.

HMRC is phasing it in by income, based on a tax return you’ve already filed:

So if your last return showed turnover over £50,000, you’re in the first wave and it started in April. Under £20,000? You can stop reading and get back on the tools — this isn’t your problem yet.

One that catches people out: qualifying income is turnover, not profit, and it adds your self-employment and your property income together. If you’ve got a van and a flat you rent out, both count. And if you’re a CIS subcontractor, it’s measured on the full invoice value — before the 20% came off.

What actually changes — and what doesn’t

People panic because they assume everything is changing. Most of it isn’t.

What stays exactly the same: you still submit one tax return a year. You still pay your tax bill the same way, by the same 31 January deadline. Nobody is asking you to pay tax four times a year — that’s the myth that does the rounds in every group chat, and it’s just not true.

What’s new: you use HMRC-compatible software, you keep digital records of your income and expenses, and you send four quarterly updates through the year. The updates are just totals per category. HMRC doesn’t receive your individual receipts or invoices. They are summaries, not mini tax returns, and you don’t pay anything when you send one.

One genuine upside, while we’re being fair to HMRC: because the numbers are live all year, your software can show you a running estimate of the tax bill coming. Basically, no more December heart attack.

The quarterly deadlines, and the one thing nobody tells you

For standard periods running to the tax year, the four dates are the same every year:

Read that first column again. Each update runs from the start of the tax year — not just the last three months. Quarterly updates are cumulative. Every one you send covers everything from 6 April up to the end of that period.

Which is quietly good news. Get something wrong in quarter one and you don’t need to resubmit it. You just correct the record and the next cumulative update carries the fix.

If your books run to calendar months instead, you can use calendar periods — 1 April to 30 June, and so on — and the deadlines stay 7 August, 7 November, 7 February and 7 May.

Then, as ever: your tax return and your bill by 31 January.

“Can I keep my spreadsheet?”

Yes — sort of, and this trips a lot of people up.

You can keep using a spreadsheet for your records. But a spreadsheet on its own can’t talk to HMRC, so you will need bridging software to send the quarterly updates from it. So it’s the spreadsheet plus a piece of software, forever, every quarter.

What about penalties?

Gentler than the old system, and gentler still this year.

Late quarterly updates: HMRC isn’t charging penalties for missing a quarterly update deadline in the 2026–27 tax year at all. You still have to send them — you can’t file your tax return until they’re in — but a late one this year doesn’t cost you.

After that, it’s points-based. Miss a deadline and you get a penalty point, not an instant fine. Hit four points and it’s £200, plus another £200 for each miss after that. Points drop off automatically after 24 months if you stay below the threshold. So one honest slip-up won’t cost you.

Late payment is a different matter and always has been. Nothing for the first 15 days. For 2026–27, 3% of the tax owed if you’re 16 to 30 days late, then 3% again at day 30, and from day 31 a further penalty building up at 10% a year, charged daily. Those percentages rise to 4% from 2027–28. Note that 10% is a penalty, not interest — HMRC’s late payment interest is charged separately, on top of all of it. You do get a 30-day grace period in your first year, dropping to 15 days after.

So the lesson is the same as it ever was: the updates won’t bankrupt you. Sitting on the bill will.

How to get ready without losing your evenings (and mind)

Here’s where the stress actually comes from. MTD doesn’t really demand more of you — it demands you stop leaving it all to the end. The box of receipts and the once-a-year spreadsheet sprint don’t work anymore, because HMRC wants the records kept as you go.

Which, funnily enough, is the one thing trades never have time to do at 5pm.

That’s the job The Back Office takes off you. You run your quotes, invoices and receipts through WhatsApp — the app already open on your phone — and Jan keeps them as tidy digital records all year. Send a voice note from the van and the invoice is logged. Snap a photo of a receipt at Screwfix and it’s filed and categorised before you’ve started the engine. So when a quarterly update rolls round, the numbers are sat there ready — for you or your accountant — instead of buried in a messy spreadsheet and filing system.

MTD for tradespeople: quick FAQ

You didn’t learn your trade to become a part-time bookkeeper. MTD doesn’t change that — it just means the admin can’t pile up to January anymore. Keep it tidy as you go and the whole thing becomes a non-event.

Where these figures come from

Every number in this guide is linked to its source below, with the date we checked it. Rules and prices change — if you are reading this a long way from the date at the top, check the originals.

• MTD for Income Tax thresholds, tax years and start dates — GOV.UK, Check if you’re eligible for Making Tax Digital for Income Tax: gov.uk/guidance/check-if-youre-eligible-for-making-tax-digital-for-income-tax
• Qualifying income defined as turnover before expenses — GOV.UK, Work out your qualifying income: gov.uk/guidance/work-out-your-qualifying-income-for-making-tax-digital-for-income-tax
• General guidance — GOV.UK, Use Making Tax Digital for Income Tax (updated 16 July 2026): gov.uk/guidance/use-making-tax-digital-for-income-tax
• Quarterly update periods, deadlines and cumulative rule — GOV.UK, Send quarterly updates: gov.uk/guidance/use-making-tax-digital-for-income-tax/send-quarterly-updates
• Penalty points, £200 threshold, 2026–27 penalty waiver and late payment percentages — GOV.UK, Penalties for Making Tax Digital for Income Tax: gov.uk/guidance/penalties-for-making-tax-digital-for-income-tax
• Exemptions — GOV.UK: gov.uk/guidance/find-out-if-you-can-get-an-exemption-from-making-tax-digital-for-income-tax

All GOV.UK pages checked 14 August 2026.