Most of the landlords we work with in Northern Ireland fit one of three patterns. They own one buy-to-let (BTL for short, meaning a property bought specifically to rent out) that they picked up in the 2010s. They have a small portfolio of three to ten properties. Or they own property in joint names with a spouse.

Making Tax Digital affects each of these differently. The bit that confuses most landlords is how the £50,000 (or £30,000, or £20,000) threshold is worked out, especially when property is jointly owned. We will get to that.

This guide covers what MTD means for landlords specifically: who is in right now, how the threshold works for property income (it is your gross rent, and joint ownership matters), what records you need, what software fits, and what to do if you are a Belfast or NI landlord working out whether to act now, next year, or in 2028.

For the broader MTD framework (timeline, who’s in, what changes), start with our Making Tax Digital 2026 overview. This article focuses specifically on the landlord angle.

Who counts as a “landlord” for MTD purposes

If you receive rent from UK property and report it on a Self Assessment return (the annual tax return self-employed people and landlords file), HMRC treats you as running a property business. That includes:

  • Buy-to-let landlords (residential)
  • Owners of student lets, HMOs, and serviced accommodation
  • Furnished and unfurnished letting
  • Commercial property landlords (offices, retail units, warehouses)
  • Holiday let owners (note: the Furnished Holiday Let regime ended on 5 April 2025; income from properties that were FHLs is now treated as ordinary property income)
  • Joint owners of any of the above
  • Lodging income above the rent-a-room scheme limit

If you are a director of a company that owns property, the company pays corporation tax and the rules in this article do not apply. MTD ITSA only catches individuals reporting property income through Self Assessment.

How the threshold maths actually works for landlords

This is where landlords need to slow down, because the answer changes depending on how the property is owned.

The threshold is gross, not net

The MTD threshold is based on gross income before any expenses. For property, that means gross rents received in the tax year. A landlord with £45,000 of annual rent and £15,000 of allowable expenses (mortgage interest, repairs, agent fees, insurance) is at £45,000 of gross property income, not £30,000 of net profit.

The thresholds in full:

  • 6 April 2026 onwards: £50,000+ gross combined income
  • 6 April 2027 onwards: £30,000+
  • 6 April 2028 onwards: £20,000+

If you also have self-employment income, it is added to the property income for the threshold test.

Joint ownership: split first, then test

If you own a property jointly, you split the rental income according to your beneficial ownership share, and then test each owner individually against the threshold.

  • For married couples and civil partners holding property in joint names, HMRC’s default rule is a 50:50 split, regardless of the actual ownership percentages on the title deed. To split differently for tax purposes, both spouses must own different shares and elect using Form 17.
  • For unmarried joint owners (siblings, business partners, parent and child), the split follows the actual beneficial ownership recorded on the deed, or the share each contributed if held under a bare trust.

This matters enormously. A married couple with a single BTL producing £52,000 of gross rent, held in joint names, are split £26,000 each by default and neither is in MTD ITSA in 2026. The same couple with the same property would have been in scope had the property been in one spouse’s name only.

Multiple sources combine for the threshold test

If the same individual has more than one source of property income, those are added together. Three BTLs at £18,000, £20,000, and £15,000 of gross rent equals £53,000 of property income, which (assuming sole ownership) puts that landlord in the April 2026 cohort.

If they also have self-employment income, that is added on top: a landlord with £40,000 of property rents and £15,000 of consultancy income totals £55,000 and is in scope from April 2026.

When does property income tip you into MTD?

For each cohort, HMRC tests your gross combined self-employment and property income on your most recent Self Assessment return.

  • For the April 2026 cohort, HMRC looked at your 2024-25 return (filed by 31 January 2026).
  • For the April 2027 cohort, HMRC will look at your 2025-26 return (due January 2027).
  • For the April 2028 cohort, HMRC will look at your 2026-27 return.

This means the planning window is short. If you are sitting at, say, £35,000 of property income today, you are likely already inside the April 2027 cohort based on your 2025-26 return, even though the rules don’t bite until next April.

What records landlords need digitally

The headline rule is that records must be created and stored digitally, in software that connects to HMRC.

For a property business, in practice that means a digital record of:

  • Every rent receipt, by property, by tenant, with the date received
  • Every allowable expense, with the date, amount, supplier, and a digital copy of the receipt or invoice
  • Mortgage interest paid (subject to the basic-rate restriction for residential lets, often called “Section 24”)
  • Capital expenditure separately recorded (improvements vs repairs is its own conversation)

The rules are not unreasonable, but they do not sit comfortably with the way most landlords actually keep records. The bank statement in a folder, the receipts in a shoebox, the spreadsheet you only update at year end: none of those satisfy MTD on their own. The records have to live in compliant software, or a spreadsheet that connects to compliant bridging software.

The good news: bank feeds in Xero, FreeAgent, Hammock, and Landlord Vision automate most of the rent-receipt side. The receipts side still needs you to scan or photograph them at the time, or push them through tools like Hubdoc or Dext.

Software for landlords specifically

We recommend different software depending on the size and nature of the property business.

Single BTL or small portfolio (1-3 properties), no other business income:

  • Hammock (purpose-built for landlords, around £10/month, simple, MTD-ready)
  • FreeAgent (free if you bank with NatWest/RBS/Mettle, otherwise around £15/month)
  • Coconut (sole-trader-flavoured, simple)

Portfolio landlord (4+ properties), or property plus another business:

  • Xero (gives you property-by-property reporting through Tracking Categories; about £30-£70/month depending on plan)
  • Landlord Vision (purpose-built, more expensive but very property-aware; around £40/month)
  • QuickBooks (works, but Xero is generally a better fit for portfolios)

Spreadsheet plus bridging:

  • For landlords who want to stay in Excel or Google Sheets, MTD is still possible if a bridging tool sits between the sheet and HMRC. We use Tax-Filer and Capium for this with clients who have been on spreadsheets for years.

The HMRC-recognised list is updated regularly at gov.uk; we check the list before recommending. Arro is independent of all the software vendors and we don’t take affiliate fees, so we’ll tell you what fits your business, not what pays the highest commission.

Quarterly updates: how property accounts work in MTD

For landlords, the quarterly update is a summary of:

  • Gross rents received in the period, by property
  • Allowable expenses incurred in the period, by category

It is not a precise tax calculation. HMRC accepts that mortgage interest restrictions, capital allowances, and end-of-year adjustments are applied at the final declaration, not the quarterly update. The quarterly figure is essentially “this is what came in and went out” by income source.

For a landlord with three properties, that means three property businesses reported in the same update (or one combined property business with property-level breakdown, depending on how your software classifies them). Mixing UK and overseas property complicates things further: UK property and EEA property are treated as separate property businesses, which means separate quarterly updates within the same return.

The four quarterly periods and deadlines (assuming a standard tax year):

  • Q1: 6 April – 5 July, due 7 August
  • Q2: 6 July – 5 October, due 7 November
  • Q3: 6 October – 5 January, due 7 February
  • Q4: 6 January – 5 April, due 7 May

After 5 April, you have until 31 January the following calendar year to file the final declaration, which is where reliefs, capital allowances, the Section 24 mortgage interest restriction, and any property-specific adjustments are applied.

Common landlord scenarios

We see these every week. The decision tree is different in each case.

Scenario 1: One BTL property, gross rent £18,000, sole ownership

Out of scope in 2026 (£18k vs £50k threshold). Out of scope in 2027 (£18k vs £30k). Out of scope in 2028 (£18k vs £20k). No MTD action needed unless rents rise.

Scenario 2: One BTL property, gross rent £18,000, plus £35,000 of consultancy income

In scope from April 2026. Combined income is £53,000 against the £50k threshold. Both income sources go into the same MTD account but are reported as separate businesses (one self-employment, one property).

Scenario 3: Three BTL properties, total gross rent £52,000, sole ownership

In scope from April 2026. The three properties are usually treated as a single UK property business; the quarterly update reports one combined property income figure with property-level detail in the records.

Scenario 4: One BTL property, gross rent £52,000, joint married names, no Form 17 election

Out of scope in 2026. Default 50:50 split for married couples means each spouse is at £26,000 of property income, both below the £50k threshold. Both are in scope from April 2027 once the threshold drops to £30,000. This is the most common pattern in NI.

Scenario 5: Portfolio of seven properties, two of them ex-FHLs, total gross rent £95,000, sole ownership

In scope from April 2026. The ex-FHL income is now ordinary property income (the FHL regime ended 5 April 2025) and combines with the rest. The portfolio almost certainly needs Xero or Landlord Vision rather than spreadsheets at this scale.

Scenario 6: One commercial unit let to a business tenant, gross rent £35,000, sole ownership

Out of scope in 2026. In scope from April 2027 once the threshold drops to £30,000.

What to do now if you’re a Belfast or NI landlord

The simplest action plan, in priority order:

  1. Add up your gross property income for the most recently filed tax year. That’s the figure HMRC tested for 2026 cohort entry. If you’re nowhere near £50k, you have time. If you’re between £30k and £50k, you’re almost certainly in the April 2027 cohort.
  2. Confirm how the property is owned. Joint ownership changes the maths. If you’re a married couple holding in joint names, the default 50:50 split applies unless you’ve elected otherwise.
  3. Decide your software now, not next year. Migrating records mid-year is harder than starting clean from 6 April. Most software providers offer a free trial; we set up trials with clients before they commit.
  4. Get your records up to date in software from your start date. That’s 6 April 2026 if you’re in this cohort, or 6 April 2027 if you’re joining next year.
  5. Plan the quarterly cadence into your year. The deadlines don’t move and they don’t pause for holidays.

If your property portfolio is part of a longer-term estate plan, it is also worth understanding how Business Property Relief and inheritance tax interact with a property business before you restructure anything for MTD.

Frequently asked questions

Do all landlords have to use MTD? No. Only individual landlords whose gross combined self-employment and property income exceeds the threshold for their cohort. £50,000 from April 2026, £30,000 from April 2027, £20,000 from April 2028.

I own one BTL with gross rent of £15,000. Does MTD apply to me? Not under any of the announced waves. The lowest threshold is £20,000 from April 2028.

How does joint property ownership work for the MTD threshold? Each owner’s share of gross rent is tested against the threshold individually. For married couples and civil partners holding in joint names, the default split is 50:50 unless a Form 17 election is in place specifying actual shares.

What software is best for landlords? For a single BTL or small portfolio with no other business: Hammock or FreeAgent. For larger portfolios or mixed income: Xero. For spreadsheet purists: a bridging tool. We can match the software to your business.

Are furnished holiday lets in scope? The Furnished Holiday Let regime ended on 5 April 2025. From 6 April 2025, FHL income is treated as ordinary property income and counts toward the MTD threshold along with all other rents.

What about property held in a limited company? Companies are taxed under corporation tax and are not within MTD ITSA. MTD for Corporation Tax has been mooted for years but no implementation date has been set.

Do I need to register if my income is below £50k but I have other Self Assessment obligations? No. MTD ITSA registration is only for those over the threshold. You continue to file a normal Self Assessment return until your income brings you in.

Talk to us about MTD for your property business

We work with landlords across Northern Ireland, from single BTL owners to portfolio landlords with twenty-plus properties. We’ll tell you exactly which cohort you’re in, choose software that fits, and handle every quarterly update on your behalf. The first conversation is free.

Contact us or call 028 9508 4138.