If your rental income is under £50,000, you're not yet required to use Making Tax Digital for Income Tax. But HMRC has opened voluntary sign-up, and you might be wondering whether jumping in early is smart or just extra admin you don't need.
It's a genuine decision, not a no-brainer either way. There's a real upside (a soft landing with no late-update penalties), and a real downside (you take on quarterly reporting before you legally have to).
This guide walks through the actual pros and cons for landlords, with the penalty rules confirmed against HMRC's own guidance and a worked example for the 2026/27 tax year. It's written for individual landlords who report property income through Self Assessment and are weighing up whether to volunteer now.
Can landlords sign up for MTD voluntarily right now?
Yes. Voluntary sign-up for Making Tax Digital (MTD) for Income Tax is open, and a landlord who won't be mandated until a later date can choose to join early to get ready. While you're volunteering, you will not get penalties for late quarterly updates.
To sign up, HMRC requires you to be registered for Self Assessment, to have submitted a tax return in the last two years, and to use software that works with MTD for Income Tax.
That software requirement is a hard one. HMRC does not let you file these submissions through the old Self Assessment online account, so MTD-compatible software (or bridging software if you use spreadsheets) is essential, not optional.
Who actually has to use MTD, and when?
MTD for Income Tax is being phased in by income level. Whether you're caught depends on your qualifying income, and the dates are set in stages.
| Qualifying income over | Based on tax year | You must use MTD from |
|---|---|---|
| £50,000 | 2024/25 | 6 April 2026 |
| £30,000 | 2025/26 | 6 April 2027 |
| £20,000 | 2026/27 | 6 April 2028 |
Qualifying income is your gross income (your turnover, before you deduct any expenses) from self-employment and property combined. If you have both a side trade and a rental property, HMRC adds the two together to test the threshold.
Crucially, employment (PAYE) income, the State Pension and private pensions do not count towards your qualifying income, although you still report them at your final declaration. So a landlord earning £45,000 from a salaried job plus £18,000 gross rent has qualifying income of £18,000, not £63,000.
That means many landlords with one or two properties sit below £50,000 of qualifying income today, and so aren't mandated yet. They're exactly the people for whom voluntary sign-up is a live choice.
What does MTD for Income Tax involve for a landlord?
Three things change compared with the once-a-year Self Assessment return you're used to.
Digital records. You keep your rental income and expenses in MTD-compatible software, with the amount, date and category recorded digitally. You can keep using spreadsheets, but you'll need bridging software that links them to HMRC so there's no manual copy-paste between programs.
Quarterly updates. Four times a year, you send a running summary of your property income and expenses to HMRC. These are cumulative, year-to-date totals, not four separate mini tax returns. Each update covers from the start of the tax year to the end of that period, so later updates simply revise the running total.
A final declaration. After the tax year ends, one final declaration replaces your Self Assessment return. This is where you confirm the figures, add any other income (employment, pensions, savings) and claim your reliefs and allowances. It's due by 31 January after the tax year, the same date you already know.
One point that trips landlords up: all your UK property is treated as a single property business, so multiple UK rentals go into one set of updates. UK property and foreign property are separate businesses and need separate updates.
Want the full picture of how landlord tax fits together? Our accounting for landlords page sets out where MTD sits alongside your wider obligations.
What are the pros of signing up voluntarily?
There's a sensible case for volunteering, especially if you know you'll be mandated soon anyway.
- A penalty-free trial run. While you volunteer, HMRC will not penalise you for late quarterly updates. You can get the rhythm wrong, learn the software and fix your process without risk.
- You spread the learning. Switching to digital records and quarterly updates is a change of habit. Doing it on your own timetable beats being forced into it cold on day one of mandation.
- A clearer view of your tax through the year. Because the software estimates your bill as you go, you see roughly what you'll owe well before 31 January, rather than getting a January surprise.
- Fewer transposition errors. Recording income and expenses as they happen, in software, tends to catch mistakes earlier than a once-a-year shoebox reconciliation.
- You're ready for the lower thresholds. If your rents are creeping towards the £30,000 (April 2027) or £20,000 (April 2028) trigger points, early practice means no scramble later.
What are the cons of signing up early?
It isn't free of downside, and for some landlords the cons outweigh the convenience.
- More frequent admin, sooner. You take on four quarterly updates a year plus a final declaration, before the law actually requires it. That's a real time cost.
- Software cost from day one. MTD-compatible software (or bridging software for spreadsheets) is a requirement, so you start paying for it earlier than you'd otherwise need to.
- The penalty shield is narrow. The "no penalties" protection covers late quarterly updates only. Late payment of tax and a late final declaration can still be penalised, so volunteering doesn't switch off all risk.
- Penalty rules tighten once you're mandated. As a volunteer, the late-submission points threshold is lower, and the regime changes when you move into mandation, so the rules you start under aren't the rules you finish under.
- The rules are still settling. This is a new regime. If your income is comfortably below the threshold and may stay there, there's a fair argument for waiting until the picture is more bedded-in.
Do penalties apply if I volunteer?
This is the part landlords most want pinned down, so here's what HMRC's guidance actually says.
Late quarterly updates. While you're volunteering, you will not get penalties for missing quarterly update deadlines. That's the headline reassurance, and it's the single biggest reason early sign-up is low-risk.
Late submission of your return or final declaration. Penalties here are points-based. You get a point each time you submit late. For volunteers the points threshold is 2 points, and hitting the threshold triggers a £200 penalty, with a further £200 for each later default.
Once you become mandated (for example, from 6 April 2027 if your income crosses £30,000), the regime tightens: the points threshold rises to 4 points, and from that point a late quarterly update can earn you a point too.
Late payment of tax still applies whether you volunteer or not. For the 2026/27 tax year, if you pay late HMRC charges a first late-payment penalty of 3% of the tax outstanding once you're past day 15 (with relief if it's your first year), a further 3% if it's still unpaid at day 30, and then a second penalty accruing daily at an annualised 10% while the debt remains. So volunteering protects your update deadlines, not your payment deadlines.
If you're unsure how these interact with the rest of your position, our tax advisory team can map it to your specific lettings.
Illustrative example: a landlord volunteering for 2026/27
Illustrative example. Priya is an employed landlord. She earns £48,000 in salary (PAYE) and £19,000 gross rent from two UK flats in 2026/27. Her qualifying income is £19,000 (rent only, salary doesn't count), so she's below the £50,000 trigger and not mandated until at least April 2028. She decides to volunteer now to get ahead.
Here's how her year looks, with the standard quarterly periods:
| Period covered | Quarterly update due | What she sends |
|---|---|---|
| 6 Apr to 5 Jul 2026 | 7 Aug 2026 | Year-to-date rent and expenses |
| 6 Apr to 5 Oct 2026 | 7 Nov 2026 | Updated year-to-date totals |
| 6 Apr to 5 Jan 2027 | 7 Feb 2027 | Updated year-to-date totals |
| 6 Apr to 5 Apr 2027 | 7 May 2027 | Full-year totals |
| Whole 2026/27 year | 31 Jan 2028 | Final declaration (adds salary, claims reliefs) |
Because Priya is volunteering, if she sends the August or November update late, she gets no penalty for that. But her final declaration on 31 January 2028 and any tax she owes still carry the normal consequences if she's late.
Her property profit for the year, say £19,000 rent less £6,000 allowable expenses, is £13,000. That profit sits on top of her £48,000 salary. With the basic-rate band covering taxable income up to £37,700 above the £12,570 personal allowance for 2026/27, her salary already uses most of the basic-rate band, so the bulk of her £13,000 rental profit falls into the 40% higher-rate band. The figures she's been seeing through the year in her software help her set that money aside early rather than scrambling in January.
This is illustrative only; your own numbers, reliefs and any jointly-owned property will change the outcome.
A simple decision walkthrough
If you'd rather not weigh five pros against five cons, run through this:
- Is your qualifying income already over £50,000? If yes, you're mandated from 6 April 2026, so this isn't a voluntary choice. Get set up now.
- Is it heading towards £30,000 or £20,000 soon? If you'll likely be caught in April 2027 or April 2028, volunteering early gives you a penalty-free run-up. Lean towards signing up.
- Are your records already digital or near-digital? If you use software or organised spreadsheets, the extra effort is small, so the pros win easily.
- Are you comfortably and durably below the thresholds, with simple paper records? Then there's a reasonable case to wait, keep things simple, and revisit when the rules are more settled.
- Do you have foreign property or several income sources? The mechanics get fiddlier (separate businesses, aggregated thresholds). Get advice before you volunteer so you start clean.
Key MTD deadlines at a glance
| Date | What happens |
|---|---|
| 6 April 2026 | MTD mandatory for qualifying income over £50,000 |
| 7 August 2026 | First quarterly update deadline for the 2026/27 year |
| 7 November 2026 | Second quarterly update deadline |
| 7 February 2027 | Third quarterly update deadline |
| 6 April 2027 | MTD mandatory for qualifying income over £30,000 |
| 7 May 2027 | Fourth (final) quarterly update for 2026/27 |
| 31 January 2028 | Final declaration for 2026/27, and tax payment due |
| 6 April 2028 | MTD mandatory for qualifying income over £20,000 |
Frequently asked questions
Is voluntary MTD sign-up actually open now?
Yes. HMRC's sign-up service lets sole traders and landlords join MTD for Income Tax before they're required to. You need to be registered for Self Assessment, have a recent tax return on record, and use MTD-compatible software.
Will I get fined for a late quarterly update if I volunteer?
No. While you're volunteering, HMRC does not charge penalties for late quarterly updates. The protection covers updates only, not late payment of tax or a late final declaration.
Does my employment salary count towards the MTD threshold?
No. Qualifying income is your gross self-employment and property income added together. Employment (PAYE), the State Pension and private pensions don't count towards the threshold, although you still report them at your final declaration.
Do my two rental flats count as one business or two?
All your UK property is treated as a single UK property business, so both flats go into the same set of quarterly updates. UK and foreign property are separate businesses and reported separately.
Can I stop volunteering if I change my mind?
You can opt back out before you're mandated, but you'd still need to keep digital records and send any outstanding quarterly updates for the year so far through compatible software. Once your income crosses a threshold, MTD becomes compulsory and the volunteer rules no longer apply.
Do I still file a Self Assessment return under MTD?
Not in the old form. Under MTD, a final declaration replaces the Self Assessment return. It's where you confirm your figures, add other income and claim reliefs, and it's still due by 31 January after the tax year ends.
Book a free Tax Health Check →
Thinking about signing up early?
Whether volunteering makes sense depends on your income, your records and how close you are to the thresholds. If you'd like a clear answer for your own lettings, talk to a Zmartly accountant about tax advisory for landlords and we'll help you decide and get set up properly.
