The rule is simpler than most articles make it sound. If your total gross income from self-employment and property was over £50,000 for the 2024-25 tax year, you are in scope from 6 April 2026. That is turnover before expenses, not profit, added together across every sole trade and every rental property you have.

A few points that catch people out:

• It is the 2024-25 return that decides your 2026-27 obligation. If you filed late or your figures were wrong, HMRC is working from what they hold.
• Employment income and dividends do not count towards qualifying income for this test.
• If you run a sole trade and let a flat, you add the two turnovers together. Two streams of £30,000 puts you in.
• From April 2027 the threshold drops to £30,000, and from April 2028 to £20,000. Most self-employed people I speak to will be in by then.

From September 2026 HMRC will start signing people up automatically if they have not done it themselves. That sounds convenient. It is not, because HMRC uses only the information it already holds, which may not reflect a change in your circumstances. I would rather you sign yourself up and stay in control of the record.

A lot of the panic around MTD comes from people thinking they now have to file five tax returns a year. They do not. A quarterly update is a short summary of income and expenses, categorised, sent directly to HMRC from your software. It is not a tax return. HMRC does not calculate tax on it. You cannot claim reliefs or adjustments on it.

The four deadlines each year are 7 August, 7 November, 7 February and 7 May. Each update covers the previous three months of the tax year. Your Self Assessment tax return, and the tax bill it generates, still has to be filed and paid by 31 January the following year, exactly as before.

If you have more than one trade or more than one property business, you file a separate quarterly update for each, plus one final declaration at year end that pulls everything together. That is the bit people underestimate. A landlord with a consultancy sideline is looking at eight quarterly submissions a year, not four. Getting your bookkeeping tidy and split by income stream from day one is what makes this manageable.

HMRC has confirmed that for the 2026-27 tax year there are no penalties for missing a quarterly update deadline. If you missed 7 August, you have not been fined. You will not be fined for missing 7 November, 7 February or 7 May either, provided that soft-landing position holds.

Late payment is different. If you owe tax and pay it late, interest runs from day one, and formal late-payment penalties kick in after 30 days. The quarterly update grace period does not extend to paying tax.

From April 2027 the points-based late submission regime bites. You collect a point for each missed deadline. Reach four points and you get a £200 penalty, then £200 again for every further miss until you clear the slate. Points for MTD for Income Tax are counted separately from your VAT points, so a clean VAT record does not protect you here.

My view: treat 2026-27 as a paid rehearsal. Get the rhythm right this year, because the safety net disappears next April.

You cannot comply with MTD on a spreadsheet on its own. You need HMRC-recognised software that keeps digital records of every transaction and files the quarterly updates directly. Bridging software exists, but for a sole trader running one or two income streams it is usually more hassle than just moving to a proper cloud package.

I run my practice on Xero and I onboard every MTD client onto it, because it does the job cleanly, the bank feeds are reliable and the audit trail is defensible if HMRC ever asks. FreeAgent and QuickBooks are both fine alternatives for a simpler sole trade.

Three things I would insist on, whatever you pick:

1. Live bank feeds, so income and expenses land automatically rather than being typed in months later.
2. Separate tracking categories for each trade or property, so quarterly updates split correctly.
3. A monthly reconciliation habit, not a mad dash the week before each deadline.

If your records for April to July are still in a shoebox or a bank app, that is the first thing to sort. The quarterly updates are only as good as the bookkeeping underneath them.

If you are in scope and nothing has happened yet, here is the order I would work in.

1. Check your 2024-25 return. Confirm your qualifying income and whether you are genuinely over the £50,000 threshold.
2. Sign up on your HMRC account using your Government Gateway login. You need to have filed a Self Assessment return in the last two years to do this.
3. Pick your software and connect it to HMRC. Move your bank feeds across.
4. Bring your bookkeeping up to date from 6 April 2026. Yes, retrospectively. The quarterly update for April to July needs to exist even if it is late.
5. File the missed 7 August update. No penalty applies for 2026-27, but the record needs to be clean before the 7 November deadline lands.

None of this is complicated in isolation. It is the doing it, alongside running your business, that trips people up. If you would rather hand the whole thing to someone who does it every day, that is a fair call to make now rather than in January.