HMRC is now automatically signing up qualifying landlords for Making Tax Digital for Income Tax where they should have been using the system from April 2026 but have not enrolled. The immediate issue is tax administration. The wider financial consequence is that many professional landlords and their accountants are moving towards a much more regular view of property income, expenses and finance costs.
HMRC's guidance, updated on 11 September 2026, confirms that from September it is signing people up in stages where its records show they need to use Making Tax Digital for Income Tax for the 2026 to 2027 tax year and have not already registered.
For the first mandatory cohort, the key threshold is qualifying income of more than £50,000 in the 2024 to 2025 tax year. Qualifying income is based on gross income from self-employment and property before expenses, rather than taxable profit.
Those within scope have been required to use Making Tax Digital from 6 April 2026. They must use compatible software to create and maintain digital records and send quarterly summaries of relevant self-employment and property income and expenses to HMRC.
Importantly, HMRC stresses that these quarterly updates are summaries rather than four separate tax returns. The annual tax-return process remains, and tax continues to be settled through the applicable annual timetable.
What Has Changed?
HMRC says that from September 2026 onwards it will automatically sign up people who should be using Making Tax Digital for Income Tax for 2026 to 2027 but have not already enrolled.
The first mandatory group includes qualifying individuals whose combined gross income from self-employment and property was more than £50,000 in 2024 to 2025.
Once using the system, landlords and sole traders need compatible software to maintain digital records and provide quarterly summaries of relevant income and expenses. HMRC explicitly describes these updates as summaries, not quarterly tax returns.
Automatic Enrolment Means MTD Has Moved From Planning to Operation
Making Tax Digital has been discussed for years, but the September automatic-signup phase matters because it moves another group of landlords from preparation into the live system.
HMRC says automatic enrolment will happen in stages over the coming months. Once somebody has been signed up, they are contacted and directed to confirm the information HMRC holds about their self-employment and property-income sources.
That includes checking UK and overseas property income. HMRC treats all UK properties as one UK property business for these purposes and all foreign properties as one foreign property business.
Landlords may also need to add new property-income sources that have arisen since the Self Assessment return on which HMRC's records were based, or tell HMRC where an income source has ceased.
For accountants managing professional landlords, this makes the process more than a software change. Client records need to be sufficiently current to support digital record keeping and the quarterly update cycle.
Late Enrolment Can Mean Reconstructing Records From the Start of the Tax Year
Automatic enrolment does not reset the beginning of the MTD obligation.
HMRC's quarterly timetable for the first mandatory cohort began from the start of the 2026 to 2027 tax year. Its published timetable shows the first quarterly-update deadline as 7 August 2026 and the second as 7 November 2026.
A landlord brought into the system after the first deadline may therefore need to work with their accountant or software provider to ensure the necessary digital records exist from the relevant start date and that any outstanding reporting requirements are addressed correctly.
That is a tax-administration matter and landlords should take guidance from HMRC and their accountant. But it also means a substantial amount of current property-business information may now be organised much earlier in the year than under a traditional annual review.
The Finance Opportunity Sits Beside MTD, Not Inside It
Making Tax Digital is a tax-reporting requirement. It does not require landlords to review their mortgages every quarter and it does not turn accountants into mortgage advisers.
What it can do is create a regular point at which the landlord and accountant are already looking at the economics of the property business. That can make deteriorating finance costs, upcoming maturities or weak asset-level cash flow harder to overlook.
Quarterly Numbers Can Expose a Mortgage Problem Earlier
A professional landlord can have a portfolio that appears healthy in aggregate while individual properties are becoming progressively less efficient.
One mortgage may have moved onto an expensive reversion rate. Another may mature within nine months. A property that once produced a strong surplus may now be generating little cash after finance costs, maintenance and voids. Elsewhere in the portfolio, substantial equity may be sitting in a low-leverage asset while the landlord is using expensive short-term capital for another requirement.
Those issues do not originate with Making Tax Digital. They exist regardless of the tax-reporting system.
The difference is frequency of visibility. Where a landlord and accountant are maintaining more current digital records and reviewing the business throughout the year, there are more natural opportunities to notice that the financing no longer fits the portfolio.
A Ten-Property Portfolio Can Change Considerably Between Annual Reviews
Consider an individual with ten personally held rental properties.
Over twelve months, several mortgages could reach the final year of their fixed periods, rents could increase, one property could experience a prolonged void, substantial refurbishment costs could arise and another asset could appreciate enough to create additional borrowing capacity.
If the portfolio is only considered comprehensively around an annual tax deadline, some of those changes may be identified much later than necessary.
A quarterly financial rhythm creates a different opportunity. It allows the landlord and their professional advisers to ask whether anything in the portfolio has changed sufficiently to justify a separate mortgage review.
That does not mean refinancing every three months. In many quarters the correct conclusion will be to do nothing.
The value is identifying the occasions when doing nothing is no longer the best option.
Finance Costs Are an Obvious Trigger, but Not the Only One
Mortgage interest and other finance costs are particularly relevant because a material increase can change the economics of a property even when rental income remains strong.
But accountants do not need to diagnose the mortgage solution themselves. A useful trigger can be much simpler: the client's borrowing appears to deserve a separate review.
Accountants Do Not Need to Share the Client's Tax Records With a Broker
This distinction matters for any accountant considering how finance fits alongside the MTD workflow.
The accountant does not need to routinely send Willow a client's quarterly submissions, bookkeeping records or detailed tax information simply to identify that a financing conversation may be worthwhile.
A referral can begin with a much narrower observation: finance costs appear to have risen materially, a mortgage is approaching maturity, cash flow is under pressure or the client has a new capital requirement.
Willow can then speak directly with the landlord, establish the borrowing position and obtain whatever financial information is genuinely required for the proposed lending route.
That keeps the roles clear. The accountant remains responsible for tax and accounting advice. Willow assesses the property finance.
MTD Could Turn the Annual Mortgage Conversation Into a Repeatable Trigger
For professional advisers, one of the difficulties with mortgage referrals is timing.
Asking an accountant whether any clients “need a mortgage” is vague. Most clients do not walk into an accounting meeting announcing that they need a new buy-to-let facility.
A trigger-based approach is more practical.
When the accountant is already reviewing the client's property numbers, a small number of observable events can indicate that a separate finance conversation may be useful.
| What the Adviser Notices | Possible Finance Question |
|---|---|
| Finance costs have increased materially | Is the landlord paying more than necessary or approaching the end of an existing product? |
| A loan matures within 12 months | Should refinancing begin before the landlord is under deadline pressure? |
| One property has weak cash flow | Could the debt structure be contributing to the problem, and should the asset be retained, refinanced or sold? |
| Rental income has risen | Could improved rental performance support a different refinance or capital-raising position? |
| Significant equity is sitting in the portfolio | Could some of that equity support another acquisition, refurbishment or wider capital requirement? |
| The landlord plans to buy or sell | Should debt across the wider portfolio be considered before the transaction is structured? |
| Borrowing has not been reviewed for several years | Does the current lender structure still reflect today's market and the client's objectives? |
MTD Does Not Apply to Every Landlord in the Same Way
The scope needs to be described carefully.
Making Tax Digital for Income Tax applies to qualifying individuals with self-employment or property income. It should not be described as a blanket requirement for every landlord or every property investment vehicle.
In particular, a limited company holding buy-to-let property is not brought into Making Tax Digital for Income Tax simply because it receives rental income. Corporate tax and reporting obligations are separate from the individual Income Tax regime covered by this particular MTD rollout.
Equally, the £50,000 threshold relates to qualifying gross income from self-employment and property combined, before expenses. It is not a £50,000 rental-profit threshold.
HMRC is also introducing MTD in stages. Its current published timetable extends the regime to qualifying income above £30,000 from April 2027 and above £20,000 from April 2028.
That means the number of landlords operating within a digital, more frequent reporting framework is expected to broaden further.
UK and Overseas Property Income Can Sit in the Same MTD Conversation
HMRC's automatic-enrolment guidance specifically asks users to check UK and overseas property-income sources.
For MTD purposes, all UK properties are treated as one UK property business and all foreign properties as one foreign property business.
For internationally active landlords, that can create a useful reminder that the financing picture may extend beyond a conventional UK buy-to-let portfolio.
A client might have rental property in Britain, another property business overseas, income in several currencies and different borrowing arrangements across the portfolio.
The tax treatment is for the client's accountant. The finance question is whether the UK debt remains appropriately structured given the client's wider position.
A Portfolio Should Not Necessarily Be Reviewed Property by Property
One of the advantages of a broader finance review is that it can identify problems that are difficult to see when each mortgage is treated independently.
A landlord may have one highly leveraged property and another with substantial unused equity. Several loans may mature within a short period. One lender may have strong terms for standard houses but weak appetite for HMOs or multi-unit blocks. The landlord may also be planning to dispose of one property and acquire another.
In those circumstances, simply replacing each mortgage as it expires may miss the larger portfolio question.
A review can consider maturities, property types, rental performance, leverage and future acquisitions together, while still recognising that different assets may ultimately be financed by different lenders.
Accountants Are Well Placed to Spot Problems Before Mortgage Advisers See Them
A mortgage adviser usually sees the client when the client decides to ask a mortgage question.
An accountant can see the financial symptoms earlier.
They may notice rising finance costs before the landlord regards them as a refinancing issue. They may know that a client plans to sell two properties before the mortgage adviser knows a disposal is being considered. They may see that portfolio cash flow is weakening even though every mortgage payment remains up to date.
That makes the accountant valuable as an early-warning point without requiring them to recommend a particular mortgage or lender.
The referral can simply be: “The numbers suggest it would be sensible to review the debt.”
Quarterly Does Not Mean the Mortgage Needs Changing Quarterly
There is an important risk of overinterpreting the opportunity.
Mortgage costs can include early repayment charges, arrangement fees, valuation costs and legal work. Constantly refinancing a portfolio would rarely be sensible simply because new financial information becomes available every three months.
The quarterly trigger is therefore about review rather than transaction.
A review might conclude that the existing mortgage should remain untouched for another year. It might identify that a refinance should begin six months before maturity. It might show that the landlord should wait until an early repayment charge falls away.
The value is in making the decision deliberately rather than allowing a loan to reach maturity without anyone having revisited it.
The First MTD Cohort Has Already Passed Its First Quarterly Deadline
For landlords in the first mandatory cohort, the new reporting rhythm is already under way.
HMRC's published timetable gives 7 August 2026 as the first quarterly-update deadline and 7 November 2026 as the second for the standard first-year timetable.
That makes September's automatic-signup programme particularly significant. HMRC is now bringing into the system people its records indicate should already be using MTD but who have not yet enrolled.
Affected landlords should follow HMRC's instructions and speak to their accountant or tax adviser where appropriate about outstanding record-keeping or reporting requirements.
From a finance perspective, however, the broader lesson is that the landlord's financial information is becoming more current. That can be used constructively without confusing tax compliance with mortgage advice.
How Willow Private Finance Can Help
Willow Private Finance works with professional landlords, portfolio investors and their accountants where the financing behind a property business needs to be reviewed alongside the client's wider plans.
The starting point does not need to be a mortgage application. It can simply be a review of the existing debt: which loans are approaching maturity, where finance costs have risen, which assets carry substantial equity, whether particular properties are generating weak cash flow and what acquisitions, disposals or capital requirements are expected next.
For accountants, that creates a straightforward division of responsibilities. The accountant continues to advise on Making Tax Digital, property income, tax treatment and accounting. Willow assesses the borrowing and lender market where the numbers indicate that a finance review may be worthwhile.
The aim is not to refinance for the sake of refinancing. It is to identify whether the debt sitting behind the property business still supports the landlord's current portfolio and future strategy.
Has a Landlord Client's Finance Position Changed?
Quarterly digital reporting can make changes in rental income, finance costs and portfolio performance visible earlier. That does not automatically mean the mortgages should change, but it can provide a useful trigger to check whether the debt remains appropriate.
Willow Private Finance can review portfolio borrowing, upcoming maturities, available equity and future acquisition or disposal plans without requiring the accountant to become involved in mortgage selection.
Explore Buy-to-Let Finance →Frequently Asked Questions
Key questions for landlords and accountants as HMRC moves qualifying property businesses into Making Tax Digital for Income Tax.
Which landlords are being automatically signed up for Making Tax Digital?
HMRC says it is signing up people who need to use Making Tax Digital for Income Tax for 2026 to 2027 but have not already signed up. For the first mandatory cohort, HMRC records must show qualifying gross income from self-employment and property of more than £50,000 in the 2024 to 2025 tax year.
Are Making Tax Digital quarterly updates the same as quarterly tax returns?
No. HMRC describes the quarterly updates as summaries of digital records for self-employment and property income and expenses. They are not separate quarterly tax returns, and the annual tax return remains part of the process.
Does Making Tax Digital apply to every limited-company landlord?
No. Making Tax Digital for Income Tax applies to qualifying individuals within the Income Tax regime, including sole traders and landlords. It should not be presented as a blanket requirement applying to property investment companies simply because they own rental property.
Why could quarterly reporting be useful when reviewing a landlord's mortgages?
More regular financial records can make changes in rental income, property expenses and finance costs easier to identify. Separately from the tax reporting requirement, landlords and their advisers can use those review points to consider upcoming mortgage maturities, cash flow, equity and refinancing requirements.
Does an accountant need to give Willow a client's tax records for a finance review?
Not simply to identify that a finance conversation may be appropriate. An accountant can flag that a client may benefit from reviewing mortgage costs, maturities, cash flow or capital requirements. Any information subsequently required for a finance application would depend on the case and lender.