If your letting agent collects the rent, pays the contractors and sends you a monthly statement, it is natural to assume they also file your quarterly MTD updates. They almost certainly do not, and the gap between what you expect and what you actually owe HMRC is where missed filings, late-submission points and (most often) a wrongly judged threshold test come from.
From 6 April 2026, you are the MTD ITSA filer for every property in your personal portfolio, even on fully managed lets you never touch. Your letting agent collects rent, pays running costs and produces source data. Turning that source data into HMRC-compatible digital records and into four quarterly submissions a year is on you (or on your accountant, where one is engaged via the Agent Services Account).
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Who does what: you, your agent, your accountant
Three parties, three clean jobs. Your letting agent collects rent, manages contractors and produces the monthly statement. You (or your accountant) take that statement, apply the categorisation and digital-record discipline, and submit the quarterly update to HMRC's MTD ITSA API. Where you engage an accountant, they sit on the tax side via HMRC's Agent Services Account. The agent never touches the MTD API. You and your accountant never collect rent or send contractors to the property. Each party owns a defined slice, and the friction always lands at one point: the data handover from agent to you (or to your accountant).
Three things follow from that split:
- The MTD obligation is yours. Pointing at the letting agent does not defer it.
- The agent's monthly statement is a source document, not a return. It still needs categorising.
- An accountant takes over the data-handling and submission end of the job, but you remain the legally responsible filer.
What a typical letting-agent monthly statement looks like
A monthly statement from a fully managed letting agent usually arrives as a PDF (sometimes a CSV) and shows the following, for one property in one month:
- Gross rent collected from the tenant
- Agent commission (a percentage of gross rent, typically 8 to 14% on managed lets)
- Management fees (sometimes a fixed monthly figure, sometimes folded into commission)
- Maintenance and repair invoices the agent paid on your behalf
- Statutory inspection fees where due in the period (gas safety, EICR, EPC renewal)
- Other deductions (admin charges, void-period management, deposit-protection fees)
- Net amount paid to your bank account
Some agents itemise heavily, some report only the headline figures with an annexed contractor invoice pack. Either way, you need every line of detail to populate the MTD quarterly update correctly. A statement that shows only "rent received £1,200" with no breakdown is not enough for compliant record-keeping, so ask for the itemised version.
Mapping a real letting-agent statement into MTD categories
Here is how it works in practice. Singh has one fully managed three-bed BTL in Reading, and the letting agent provides this monthly statement for June:
| Line | Amount |
|---|---|
| Gross rent collected | £1,650 |
| Agent commission (10%) | (£165) |
| Monthly management admin | (£20) |
| Gutter clean (contractor invoice) | (£90) |
| Boiler service (contractor invoice) | (£135) |
| Statutory inspection fee (annual gas safety) | (£60) |
| Net paid to Singh's bank | £1,180 |
For the MTD quarterly update covering 6 April to 5 July (submitted by 7 August), Singh's June figures contribute these line entries:
- Property income: £1,650 (the gross rent, not the £1,180 net)
- Legal, management and other professional fees (SA105 box 27 category): £185 (commission £165 + management admin £20)
- Property repairs and maintenance (box 25 category): £225 (gutter £90 + boiler £135)
- Other allowable property expenses (box 29 category, or box 27 depending on agent presentation): £60 (statutory inspection fee)
The same categorisation discipline applies for every month in the quarter. The cumulative quarterly figures (assuming three identical months for illustration) are gross income £4,950, legal/management £555, repairs £675, other expenses £180. That is the data that goes into the quarterly API submission.
Two things matter here.
The cash flowing into Singh's bank account is £1,180 per month, £3,540 per quarter, and that figure appears nowhere on the MTD quarterly update. Report £3,540 of net cash as the income line and you understate gross by £1,410 in the quarter, understate expenses by the same total, and create a profit-neutral but threshold-distorting error.
The agent's commission and management admin are both expenses to you, not, from your side of the deal, the agent's revenue. They sit in legal, management and other professional fees, either as a single combined figure or as two distinct lines, so long as both are captured.
The gross-versus-net trap and the threshold test
The most damaging error here is not a wrong category, it is treating the wrong number as your gross income.
On a managed BTL paying 12% agent commission, monthly management fees of £25, and irregular contractor invoices, roughly 80 to 85% of the gross rent lands in your bank account once all the agent-side deductions come off. Glance at your bank statements, see about £45,000 arriving and conclude "my rental income is about £45,000" when the gross rent collected was £55,000 and you have done exactly what the agent's net-paid line invites: equated net cash received with rental income.
The qualifying-income threshold test is on gross, not net. If you collect £52,000 of gross rent (above the £50,000 April 2026 mandate threshold) but only £42,000 reaches your bank (below it), you are in MTD ITSA from 6 April 2026 whatever your bank account suggests. The threshold test does not see the agent commission, the repair invoices or any other deduction. It sees the rent the tenant paid.
So the gross figure on the agent's monthly statement is what decides whether you are in MTD at all, and what you report in the quarterly income line once you are. Net cash to the bank is a useful sanity check, not an MTD figure.
Multi-property portfolios with one agent
With three properties under the same letting agent, you typically get one consolidated monthly statement covering all three (some agents send three separate statements; the effect is the same). Each property's gross rent, commission, management fees, repairs and other deductions feed into the same MTD ITSA cycle, because MTD ITSA aggregates your property income across the whole portfolio, not property by property.
In practice, the quarterly update reports:
- Income line: sum of gross rent across all three properties for the quarter
- Each expense category: sum of the agent statements for all three properties
If the agent's statement already aggregates, your job is simply to slot the totals into the right MTD categories. If it reports per-property, you (or your accountant) add the figures up before submission.
There is no per-property quarterly return, and no per-property qualifying-income test beyond the aggregate. If you want to track per-property profitability (most landlords do), that lives in your accounting software's property-level reporting, not at the MTD submission interface.
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Multi-agent portfolios, different agents per property
If your three properties are each managed by a different letting agent, you have a multi-statement reconciliation problem, not a multi-filing problem. There is still one MTD ITSA cycle for you, covering all three properties' income consolidated.
The work is:
- Receive a monthly statement from each of the three agents
- Map each statement's lines into the MTD categories
- Sum the quarterly figures across the three statements
- Submit one quarterly update
Three agents means three statement formats (PDF, CSV, portal export, occasionally a hand-typed email summary), three commission rates, three chart-of-accounts conventions on the agent side and three sets of contractor-invoice handling. This is the setup where MTD is heaviest, and it is the strongest case for putting an accountant on the ASA route: they absorb the agent-by-agent reconciliation work so you do not have to.
Joint owners with a letting-agent-managed property
Where a property is jointly owned (commonly by spouses) and managed by a letting agent, you each receive the same agent statement (or one goes to the joint contact), but you each file separately. The split of every line on the statement follows the beneficial-ownership share:
- 50/50 default split (married couples without a Form 17): each spouse records 50% of gross rent, 50% of commission, 50% of repairs.
- Form 17 split (e.g. 70/30 reflecting unequal beneficial interest): each owner records their respective share.
- Tenants-in-common with unequal shares (unmarried co-owners): actual share applies.
One agent statement feeds two parallel MTD filings (where you are both above threshold) or one filing plus one annual SA return (where one of you is above and the other below). The discipline is to enter the same source data into both sets of software with the appropriate split, never to invent two separate sets of source data.
Our joint-owner quarterly filing guide goes deeper on running two parallel cycles, including how a mid-year Form 17 split change feeds through to mid-year quarterly updates.
Annual reconciliations, void periods, and agent year-end statements
Some letting agents produce a year-end reconciliation in May or June covering the full April-to-April tax year. The reconciliation typically captures:
- Commission rebates where the agent overcharged earlier in the year
- Deposit-protection fees not previously billed
- Void-period management fees
- Late-arriving contractor invoices for work done in the prior year
- Adjustments for tenant default and recovery
These reconciliations land after the year-end, once the relevant quarterly updates are already submitted. Do not amend a closed quarterly update for them. Adjustments of this kind go through the end-of-period statement and final declaration for the relevant tax year, where the year as a whole is finalised. If a reconciliation arrives so late that you have already filed the final declaration, carry the adjustment into the next year's quarterly update or final declaration, with a brief note in the accounting record explaining the timing.
Void periods (no rent collected, agent management fees continuing) show on the monthly statement as a £0 income line with the expense lines still running. Your MTD quarterly update records £0 income for that property in the void month plus the actual expense figures. You do not need to write a separate explanation or flag the void to HMRC; the quarterly figures show it directly.
Where your accountant fits via the Agent Services Account
Engaging an accountant on the MTD ITSA side is a separate thing from engaging a letting agent on the property side. Your letting agent is your property-management agent, authorised by the letting agreement to act on the property. Your accountant is your tax agent, authorised by HMRC's Agent Services Account to file your returns.
The ASA authorisation flow runs through you: the accountant generates an authorisation request, HMRC emails you a link to the gov.uk authorisation portal, and you log in via Government Gateway and approve the accountant for MTD ITSA specifically. From there, the accountant receives the agent statements (you forward them, or give read-only access to the letting agent's portal if the agent allows it), categorises the figures into the MTD update structure, and submits on your behalf.
Our ASA authorisation walkthrough covers that handshake in full. The short version for letting-agent landlords: the ASA route is what lets your accountant absorb the agent-statement-to-MTD-update workload, leaving you with the portfolio-level decisions and the final-declaration sign-off.
Setting it up before April 2026
If you have a managed portfolio, use the lead time before 6 April 2026 to do five things:
- Confirm with each letting agent that they can give you an itemised monthly statement, in either CSV or a structured PDF that exports cleanly to your software of choice. A verbal "yes" is not enough; ask for a sample export.
- Pick MTD-compatible software that accepts your agent's export format directly, with no manual re-keying. The HMRC compatible-software list sets the boundary; the agent integration is the practical filter.
- Engage an accountant via the Agent Services Account if your portfolio spans two or more agents, or if the time you would spend on monthly categorisation costs more than the fee.
- Get the digital-records discipline running at least one full quarter before April 2026, so your first MTD quarter is a continuation, not a brand-new system.
- Run a parallel month: take the agent's January 2026 statement and map it into your MTD software as though it were a real quarterly contribution. That surfaces any data-flow gaps before they bite in April.
The landlords who reach April 2026 with a letting-agent portfolio set up properly are not the ones who started in March, they are the ones who started by autumn 2025. The lead time on agent-side data exports, software selection and accountant authorisation is six to nine months, not six to nine weeks.
Related guides
For the big-picture view of the six headline changes for residential landlords, start with our MTD ITSA overview for residential landlords. To pin down whether you are even in scope, our MTD ITSA qualifying-income test page works through the gross-only rule with figures. If you own jointly with a letting agent in the middle, our joint-owner quarterly filing mechanics page covers running two cycles side by side. To authorise an accountant, our ASA authorisation walkthrough takes you through the handshake step by step. And if your agent withholds tax because you live abroad, our NRL scheme letting-agents quarterly returns page covers the withholding side.
The positions here draw on gov.uk MTD ITSA use-the-service guidance, the HMRC compatible-software list, and the HMRC Property Income Manual (PIM) for the SA105 expense categorisation framework.