SECTION 01
The MTD ITSA timeline.
Three thresholds, three start dates, one phased rollout. Phase 1 is now live for landlords above £50,000.
HMRC tests your qualifying income in the tax year shown two years before the start date. So Phase 1 testing happened on your 2024/25 numbers (your January 2026 SA100 return). Phase 2 tests 2025/26. Phase 3 tests 2026/27.
MTD ITSA rollout for landlords
6 April 2026
Phase 1
£50,000+ qualifying income
Live now
6 April 2027
Phase 2
£30,000+ qualifying income
11 months
6 April 2028
Phase 3
£20,000+ qualifying income
23 months
Landlords who are NOT in MTD ITSA at all
- Landlords with qualifying income under £20,000, even after Phase 3 lands
- Limited company landlords: companies file CT600 Corporation Tax returns, not in scope
- Trustees holding rental property as part of trust assets (until further notice)
- Personal representatives administering an estate (transitional only)
Holding property through a Ltd? You're outside MTD ITSA
If your rentals sit in a property investment company, your obligation is the company's annual accounts plus CT600 to HMRC, exactly as before. You only get pulled into MTD ITSA if you also hold property personally outside the company.
For the full mechanics shared with self-employed clients, see our main MTD ITSA guide. The rest of this page focuses on landlord-specific issues.
SECTION 02
Are you in MTD ITSA right now?
A two-step landlord check, plus the rules on what counts as qualifying property income.
Quick check (Phase 1, live now)
Are you in Phase 1 of MTD ITSA?
In 2024/25, did your gross property + self-employment income (your share for joint) exceed £50,000?
YES ↓NO ↓
YES, you are in Phase 1You should already be enrolled. First quarterly update for 6 Apr to 5 Jul 2026 was due by 7 August 2026.
Check Phase 2 and Phase 3If 2025/26 will exceed £30k, Phase 2 from April 2027. If 2026/27 will exceed £20k, Phase 3 from April 2028.
What counts as "qualifying income" for landlords
Gross income before any expenses, from these sources combined:
- UK property rental: all residential and commercial lets, including former FHLs
- Overseas property rental: in sterling equivalent
- Self-employment trades: any sole trader work you do alongside the rentals
These do NOT count toward qualifying income:
- PAYE employment income (the day job)
- Dividends from shares or your own Ltd
- Pension income
- Interest on cash deposits
- Capital gains from selling property (separate CGT regime, separate filing)
Gross, not net
The threshold is gross rents before any expenses. So a landlord with £55,000 of gross rent but £45,000 of mortgage interest, repairs and management fees still has £55,000 of qualifying income for the test. Net rental profit is only £10,000, but they're still in Phase 1.
SECTION 03
Joint ownership and Form 17.
Each joint owner counts only their share toward their personal MTD threshold. This is the single most important rule for spouses, civil partners, and unmarried co-investors.
The default split
For spouses and civil partners, HMRC defaults to a 50/50 split of property income for tax purposes, regardless of the legal title or actual capital contribution. This default applies unless you submit Form 17 declaring an unequal beneficial interest (and the actual title supports it). Form 17 must be filed within 60 days of the declaration date.
For unmarried co-owners, income follows the actual beneficial interest in the property: stated in the declaration of trust or, if none, defaulting to the legal ownership split.
Worked example: 50/50 married couple
Property gross annual rent
£80,000
↓ split 50/50 default ↓
Spouse A's qualifying income
£40,000
Below £50k = NOT in Phase 1
In Phase 2 from April 2027
Spouse B's qualifying income
£40,000
Below £50k = NOT in Phase 1
In Phase 2 from April 2027
Same property, same total rent, but because each spouse's share is £40,000, neither hits Phase 1 in April 2026. Both come into Phase 2 from April 2027.
If the property is owned in unequal shares (say 75/25 reflecting the deposit one spouse contributed), Form 17 lets you split income to match. For the same £80,000 property:
- Spouse A (75%): £60,000 qualifying income, in Phase 1 from April 2026
- Spouse B (25%): £20,000 qualifying income, in Phase 3 from April 2028
This creates a planning opportunity but also a compliance asymmetry: in this case Spouse A files quarterly under MTD from now, while Spouse B doesn't enter MTD for nearly two more years.
Form 17 has to match the actual ownership
Form 17 is not a tax planning trick to shift income arbitrarily. It must reflect the actual beneficial ownership of the property, supported by a declaration of trust or transfer of beneficial interest. Many couples assume they can pick whichever split saves the most tax; HMRC will challenge it if the paperwork doesn't match.
SECTION 04
10 BTLs = 1 MTD business.
Probably the single most misunderstood point about MTD ITSA for landlords. All your UK rentals consolidate into ONE property business. Overseas is a separate one.
UK property income: one business
Whether you own 1 property or 30, all your UK rental income falls into a single "UK property business" for MTD purposes. You make one set of quarterly updates covering all of them, plus one EOPS, plus the Final Declaration.
A 5-property portfolio under MTD
BTL 1London flat
£18k
BTL 2Manchester semi
£12k
BTL 3Leeds HMO
£24k
BTL 4Coastal cottage (former FHL)
£16k
CommercialLock-up unit
£10k
↓ consolidate ↓
UK property business
£80,000 total · 4 quarterly updates + 1 EOPS + 1 Final Declaration = 6 submissions/year
Overseas property: separate business
If you also own rental property abroad (a flat in Spain, a holiday let in France), that overseas property income forms a separate MTD business. So it needs its own four quarterly updates plus its own EOPS, but feeds into the same Final Declaration.
If you also have self-employment
Each separate self-employment trade is its own MTD business too. So a landlord with UK BTLs + overseas property + a freelance consultancy = 3 MTD businesses, each with their own quarterly cycle. That's 12 quarterly updates plus 3 EOPS plus 1 Final Declaration = 16 submissions per year.
This is the practical reason most clients delegate
Self-managing one MTD business is doable. Self-managing three across a portfolio plus a side trade is exhausting. We file the lot for clients on a fixed monthly fee.
SECTION 05
Furnished Holiday Lets: abolished.
The FHL regime was abolished from 6 April 2025. If you owned an FHL on or before that date, here's what changed and what it means for MTD.
What FHL abolition removed
Before April 2025, properties qualifying as FHLs (short-term holiday lets meeting strict availability and occupancy tests) enjoyed several tax perks not available to standard rentals:
- Full mortgage interest deductibility (no Section 24 restriction)
- Capital allowances on furnishings and integral features
- BADR (business asset disposal relief) at 14% on sale
- Treated as relevant earnings for pension contribution purposes
- Counted as a separate "property business" for tax (and for MTD)
From 6 April 2025, all of these went away. Former FHL income is now treated identically to standard rental income, with mortgage interest restricted to a 20% basic rate tax credit under Section 24 (see Section 06 below).
What this means for MTD
Former FHLs consolidate into your single UK property business for MTD ITSA. Same quarterly updates, same EOPS, same Final Declaration. You no longer have a separate FHL business stream.
If you sold an FHL pre-April 2025
BADR at 14% may still apply on the disposal if completion was before 6 April 2025 and the FHL conditions were met. CGT on FHL disposals is reportable on the existing 60-day online property disposal service. If you have a pre-abolition disposal that wasn't reported correctly, get advice now; the disclosure is much easier than the alternative.
Already non-compliant or just want it handled?
We file the missing updates, represent on penalty appeals, and put you on a fixed monthly fee going forward. Free 15-min scoping call.
Book a free 15-min call
SECTION 06
The calendar plus Section 24.
Quarterly schedule per business plus how to handle mortgage interest under MTD. Most landlord errors live in the Section 24 area.
Quarterly schedule per MTD business
Yearly MTD ITSA calendar (per business)
Q1 update
6 Apr to 5 Jul
Due by 7 August
Q2 update
6 Jul to 5 Oct
Due by 7 November
Q3 update
6 Oct to 5 Jan
Due by 7 February
Q4 update
6 Jan to 5 Apr
Due by 7 May
EOPS
End of period statement (per business)
Due by 31 January following tax year end
Final Declaration
Whole tax position (replaces SA100)
Due by 31 January following tax year end. This is where final tax is calculated and paid.
Section 24 mortgage interest under MTD
Section 24 restricts residential mortgage interest relief to a basic rate (20%) tax credit, instead of allowing it as a deductible property expense. This rule has been fully in force since April 2020 and is unchanged by MTD; the mechanic just needs to flow through your software.
How to record mortgage interest under MTD
- Record mortgage interest as a separate line item, not pooled with other expenses
- Even if you use the three-line accounts simplification (allowed under £90,000 gross), residential finance costs sit in their own category
- The interest figure does not reduce taxable rental profit at the quarterly update stage
- The 20% basic rate tax credit is applied at the Final Declaration stage
- Commercial property mortgage interest is unaffected by Section 24 and remains fully deductible
The Section 24 trap most landlords miss
If you also have other income (PAYE salary, dividends, self-employment) that pushes your total income into higher rate, Section 24 can push you into a position where you pay more tax than your actual cash profit. We model this for clients each year and look at incorporating to a Ltd, gifting to a basic-rate-paying spouse, or splitting via Form 17. Worth a free 15-min call if your portfolio is highly geared.
Three-line accounts simplification for landlords
If your gross UK property income is below £90,000 (the VAT threshold), you can use simplified three-line accounts under MTD: total income, total expenses, net profit. No detailed expense categorisation needed. The exception is residential mortgage interest, which must always be reported separately because of Section 24.
SECTION 07
Penalties: what late landlord submissions actually cost.
Two separate and cumulative regimes. Late submission (points-based) and late payment (escalating percentages plus interest). Both bite quickly.
Points-based late submission penalties
Each missed submission deadline gives you one penalty point. Once you reach the threshold (4 points for quarterly filers), every subsequent late submission triggers a flat £200 penalty. Points expire after 24 months of full compliance.
How the points system bites (quarterly filer)
1
→
2
→
3
→
4
→
£200
fine
→
£200
each
more
Each missed quarterly submission = 1 point. Once you hit 4 points, the £200 penalty kicks in. Then every subsequent late submission triggers another £200, regardless of how late. Points only clear after 24 months of perfect compliance.
Late payment penalties (separate from late submission)
If you miss the payment deadline (Final Declaration tax due 31 January), the penalties are cumulative and escalate fast.
Day 1 to 15 late
No penalty (yet)
But late payment interest accrues from day one at Bank of England base rate plus 4%.
Day 16
2% of unpaid tax
First fixed penalty. Plus continuing interest.
Day 31
Another 2% of unpaid tax (total 4%)
Second fixed penalty. So if you owe £10,000 at day 31, that's £400 in fixed penalties so far plus accrued interest.
Day 31 onwards
4% per year annualised
A daily-accrued penalty at 4% per year on the unpaid balance, until paid. Plus interest at base rate + 4%. Combined effective cost can exceed 12% per year.
For deliberate non-compliance
Up to 100% of tax due
Behaviour-based penalties can stack on top for deliberate concealment.
SECTION 08
If you missed your Phase 1 start.
Phase 1 went live in April 2026. If you should have enrolled and didn't, here's the catch-up plan.
Step 1: Backdate enrolment immediately
We sign you up for MTD ITSA from the correct start date and link agent authorisation. This stops further new points accruing from the enrolment date.
Step 2: Reconstruct the missed quarter(s)
For landlords this typically means rebuilding rental ledgers from bank statements, agent statements, deposit accounts and your own records. Missing receipts? We work with bank entries plus typical landlord categories. Mortgage interest is identified separately (for Section 24).
Step 3: File the missed quarterly updates
We file every missed submission to clear them off the active list. Each missed submission = 1 penalty point already accrued. Catching up doesn't reverse the points, but it stops more accruing.
Step 4: Penalty appeal where there's reasonable excuse
If you have a reasonable excuse (illness, bereavement, software failure, HMRC system problems), we appeal the points. The "reasonable excuse" test is narrow, but it's not zero, and we've already had landlord appeals succeed where the client genuinely tried to enrol but hit MTD onboarding bugs.
Step 5: Forward compliance under monthly accounting
Once current, we put you on a fixed monthly fee that covers all four quarterly submissions, EOPS, Final Declaration, software, and all HMRC correspondence. Pricing depends on portfolio size; we quote at the free 15-min call.
The longer you wait, the bigger the bill
Each missed quarterly submission accrues a penalty point. Once you reach 4 points, every subsequent late submission is £200 in its own right. Catch up at month 3 is a different problem from catch up at month 9. Get on a call today; we'll triage in 15 minutes.
