From 6 April 2026, MTD ITSA does not just change how landlords file; it changes how they must keep records day to day. Digital records held in functional compatible software, with unbroken digital links from source data to the HMRC submission, become a legal requirement rather than good practice. This spoke sets out exactly what must be recorded, how invoices and receipts should be organised, and how the new points-based penalty regime treats failures. It sits under [the MTD ITSA hub](/guides/mtd-itsa-landlord-2026-guide/), which frames the whole regime.
Record-keeping is the foundation the rest of the cycle stands on. The choice of [MTD-compatible software](/blog/mtd-software-xero-freeagent-hammock/) determines how easily records are captured, and clean records are what make [the Final Declaration that replaces Self-Assessment](/blog/mtd-final-declaration-replaces-self-assessment/) a true-up rather than a year-end reconstruction. Disorganised records do not just risk penalties; they make every quarter harder than it needs to be.
What the digital record-keeping rules require
Under MTD ITSA, a landlord must keep a digital record of each item of property income and each allowable expense in functional compatible software. The record must capture the amount, the date, and the category of the transaction. These digital records replace the paper ledgers and shoebox-of-receipts approach: the primary record now lives in software, not on paper. The underlying paper or PDF document behind a transaction can still exist as evidence, but the transaction itself must be recorded digitally.
The records must be kept transaction by transaction within the period, not reconstructed in bulk at quarter end. While HMRC submits totals in each quarterly update, the totals must be built from individually recorded digital transactions, not from a single lump-sum entry. This is the practical heart of the regime: continuous digital bookkeeping rather than annual catch-up.
There is no requirement to scan and store every paper document inside the software, though most landlords find attaching the receipt to the transaction the cleanest approach. What the rules require is that the transaction is recorded digitally in compatible software and that the figures flow to HMRC by digital link. The supporting invoice or receipt remains the evidence behind that figure, and it must be retained, but it is the digital transaction record, not the paper, that satisfies the digital-record obligation.
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The digital links requirement
A "digital link" is the requirement that, once data is in digital form, it moves between systems electronically rather than by manual re-typing. If a landlord uses a spreadsheet and then bridging software, the figure must pass from spreadsheet to bridging tool by a digital link (a formula, an import, a linked cell), not by reading a number off one screen and typing it into another. Manual transcription breaks the digital link and breaches the rules. Within a single end-to-end package the digital link is automatic, which is one reason an integrated tool is simpler than spreadsheet-plus-bridging.
What must be recorded for each transaction
- The amount of the income or expense.
- The date of the transaction.
- The category, so property income and the broad expense headings (repairs, insurance, agent fees, finance costs, management, other) can be totalled.
- Enough detail to allocate the item to the correct property business (UK property, foreign property, or self-employment).
A landlord does not have to submit each transaction to HMRC. The quarterly update carries totals per category. But the totals must be derived from the recorded transactions, and HMRC can ask to see the underlying digital records on enquiry.
Organising invoices and receipts
The fastest way to stay compliant is to capture documents at the point they arise rather than at quarter end. Most MTD software lets a landlord photograph or upload a receipt and attach it to the transaction, so the evidence and the digital record sit together. A consistent routine, capturing every property invoice and receipt as it comes in and reconciling against the bank feed weekly or fortnightly, turns the quarterly update into a quick review rather than a reconstruction.
A dedicated property bank account underpins all of this. When rental income and property expenses flow through one account with a bank feed into the software, most transactions are captured automatically and only need categorising. Mixing personal and property spending in one account forces line-by-line sorting every quarter and multiplies the chance of a missed or miscategorised item.
How long must records be kept?
The standard retention period for property income records is at least five years after the 31 January submission deadline for the relevant tax year, in line with HMRC's general requirement for the self-employed and landlords. Where an enquiry is open or a return was filed late, records may need to be kept longer. Because the digital records live in software, retention is largely a matter of keeping the subscription and the data accessible rather than storing boxes of paper.
A practical quarterly record-keeping routine
| Frequency | Task | Why it matters |
|---|---|---|
| As they arise | Capture each invoice and receipt into the software | Evidence sits with the transaction; nothing is lost |
| Weekly or fortnightly | Reconcile the bank feed and categorise transactions | Keeps the digital record current and accurate |
| Each quarter end | Review category totals and submit the update | Turns filing into a check rather than a rebuild |
| Year end | Confirm records complete before EOPS and Final Declaration | Avoids late corrections and penalty exposure |
The points-based penalty regime
MTD ITSA introduces a points-based regime for late submissions, separate from late-payment penalties. Each missed quarterly update or Final Declaration earns one penalty point. For quarterly filers, reaching a threshold of points within a rolling 12-month period triggers a fixed penalty, and further missed filings while at the threshold trigger further fixed penalties. Points expire after a period of compliance. The design rewards getting back on track quickly: a single late filing is a point, not an immediate fine, but repeated lateness escalates.
Late payment of tax is handled separately. Tax crystallises at the Final Declaration, due 31 January following the tax year end, and interest plus late-payment penalties apply to tax not paid by that date. Good digital records do not change the payment deadline, but they make it far easier to know the liability early and plan for it.
Common record-keeping mistakes to avoid
- Re-typing figures between a spreadsheet and bridging software, which breaks the digital link.
- Leaving all categorisation until quarter end, which invites errors and missed deadlines.
- Mixing personal and property transactions in one bank account.
- Recording lump-sum totals instead of individual transactions.
- Discarding the underlying receipt once the digital record is made; keep both.
Capital versus revenue: getting the category right
Digital record-keeping does not change the underlying tax treatment, but it does make consistent categorisation more visible. A repair (replacing a broken boiler with a like-for-like unit) is a revenue expense deductible against rental profit; an improvement (a new extension or an upgrade beyond like-for-like) is capital and is not deductible against income, though it may matter for capital gains later. Recording these correctly at the point of entry, rather than guessing at year end, keeps the quarterly totals reliable and the Final Declaration clean.
The same care applies to finance costs. Mortgage interest on residential lets is not a straightforward expense under Section 24; it is relieved as a basic-rate tax credit rather than deducted from rental profit. Recording finance costs in their own category, separate from general expenses, keeps the quarterly totals accurate and makes the year-end Section 24 calculation straightforward rather than a hunt through mixed entries.
Handling joint ownership in the records
Where a property is jointly owned, the digital records hold the full property income and expenses once, and each owner reports their agreed share. The software allocates income and expenses by the ownership or Form 17 percentage so each owner's MTD updates pull only their portion. The record-keeping discipline is the same; what changes is the allocation step. Keeping a single clean set of property records and letting the software split it is far more reliable than two part-records that risk double-counting or omission.
Evidence HMRC can ask to see
On an enquiry, HMRC can ask to see the digital records behind the submitted totals and the source documents behind the records. That means the transaction list in the software, the bank statements the feed drew from, and the invoices or receipts supporting each expense. Keeping the underlying document attached to each transaction, rather than discarded once the digital entry is made, turns an enquiry from a stressful reconstruction into a simple export. This is why the rules treat the digital record as primary while still expecting the supporting evidence to exist.
Getting records ready before April 2026
The single most useful preparation step is to reconcile the closing position at 5 April 2026 so the first MTD quarter starts from a clean opening balance. Separating the property bank account, connecting the feed, and running a trial reconciliation before the quarter begins surfaces gaps while there is still time to fix them. An [MTD-ready accountant](/services/mtd-compliance/) can set up the record structure, agree the category list, and run the opening reconciliation as part of the migration so the first quarterly update is routine rather than rushed.