MTD for One Rental Property: A Beginner's Walkthrough

If you own a single rental property and you've started hearing the words "Making Tax Digital", you'd be forgiven for feeling a bit uneasy. The good news? For most landlords with one property, this is far less dramatic than it sounds — and you almost certainly don't need to rush out and hire an accountant to cope with it.

Let's walk through it slowly, in plain English.

First, do you even need to do this yet?

Making Tax Digital for Income Tax (sometimes called MTD ITSA) is being phased in based on your qualifying income — and this is the bit people get wrong. Qualifying income means your gross rental and self-employment income before you take off any expenses. It's your turnover, not your profit.

The start dates work like this:

• Over £50,000: you join from 6 April 2026
• Over £30,000: from 6 April 2027
• Over £20,000: from 6 April 2028
• £20,000 or under: not required to join yet

So a landlord whose property brings in £18,000 a year in rent isn't in scope at the moment, even though £18,000 is a meaningful amount of money. You can read the official detail on the GOV.UK Making Tax Digital for Income Tax guidance, and we've also broken the bands down in our guide to MTD income thresholds.

One thing worth flagging: the threshold is measured on gross rent, not the profit you actually keep. It's easy to assume you're under the line because your profit is modest, when your turnover tells a different story.

A worked example: meet Sarah

Sarah lets a two-bed flat in Leeds for £1,250 a month. That's £15,000 a year in rent. Her mortgage interest, letting agent fees, insurance and repairs come to around £6,000, so her actual profit is closer to £9,000.

Because her gross rent is £15,000 — below £20,000 — Sarah isn't required to join MTD yet. Her profit doesn't come into the threshold calculation at all.

Now imagine Sarah also does a bit of freelance graphic design on the side, earning £12,000 gross from that. MTD adds her qualifying income together: £15,000 rent + £12,000 self-employment = £27,000. That tips her over £20,000, so she'd be brought in from 6 April 2028. If you've got income from more than one source, our guide on MTD when you have other income explains exactly how it's combined.

What you'll actually do once you're in

Once you're required to follow MTD, three things happen:

1. You keep digital records of your rental income and expenses — no more shoebox of receipts and a frantic January.
2. You send HMRC four quarterly updates during the tax year.
3. After the tax year ends, you submit one final declaration.

Together, the quarterly updates and the final declaration replace the old Self Assessment return for that income. You're not doing Self Assessment and MTD — MTD takes its place.

Here's the reassuring part about the quarterly updates: from 2025–26 onwards they're cumulative year-to-date totals. Each update is a running tally of the year so far, not four separate little tax returns. If you make a small slip in quarter one, the next update simply restates the correct year-to-date figure — it tidies itself up.

The dates to put in your diary

The standard quarterly periods end on 5 July, 5 October, 5 January and 5 April. The matching deadlines to send each update are:

• 7 August
• 7 November
• 7 February
• 7 May

Then the final declaration is due by 31 January following the end of the tax year — the very same date Self Assessment always used. So the rhythm of your year changes, but that big January date stays familiar. There's more in our MTD deadlines guide, and you can cross-check everything against GOV.UK's MTD timeline.

What if you own the property with someone else?

If you jointly own a rental — say with a spouse or sibling — each owner reports their share of the income, split by ownership share. Crucially, the threshold is measured per person, not per property.

So a couple who jointly own a flat producing £36,000 of gross rent would each count £18,000 toward their own threshold (assuming a 50/50 split). Individually, that's below £20,000 — so neither is dragged in purely on this property, unless their other income pushes them over. It's a genuinely useful quirk, and one a lot of landlords don't realise.

Do you need an accountant?

Honestly? For a single, straightforward rental, many landlords manage this themselves with the right software — that's exactly what Quarterwise is built for. It keeps your digital records and files both the quarterly updates and the final declaration to HMRC, without assuming you speak fluent accountant.

That said, if your affairs are more tangled — multiple properties, a limited company, big one-off costs — a good accountant is worth their fee, and MTD software still works happily alongside one. We cover that in using MTD software with an accountant.

The headline: one property, decent records, a few dates in the diary. That's the shape of it.

This article is general information, not tax advice. Always check your own position with HMRC or a qualified accountant.