BLOGS
Voluntary Landlord Disclosures Hit Seven-Year High
3K Financial & Accounting Services Ltd | Keeping Klient Knowledgeable
Executive Summary: HMRC recovered £104m from landlords in 2025-26 following voluntary tax disclosures under the Let Property Campaign and targeted compliance activity. Disclosures surged by 48% to 11,511—a 7-year high—as tax authorities leverage advanced AI, Land Registry data matching, and mandatory Making Tax Digital rules.
Record Clamback: HMRC Sustains £100m+ Tax Recovery
HM Revenue & Customs (HMRC) recovered £104m from UK landlords in 2025-26 after individuals made voluntary tax disclosures, admitting untaxed property income that had previously gone unreported outside the standard Self Assessment cycle. This marks the third consecutive year that tax authorities have clawed back more than £100m in unpaid property tax.
The figures, obtained via a Freedom of Information (FOI) request by accounting firm Price Bailey, encompass revenue recovered through HMRC's longstanding Let Property Campaign alongside broader compliance operations, including discovery assessments and campaigns directed at non-responders.
A Decade of Enforcement: The Let Property Campaign
Since its launch in 2013, the Let Property Campaign—often described as an disclosure scheme or 'amnesty' for landlords—has generated over £674m in unpaid tax, averaging roughly £51.8m per year. Historical trends demonstrate a dramatic acceleration in HMRC's yield over recent fiscal cycles:
|
Tax Year |
Total Revenue Recovered |
Voluntary Disclosures |
|
2019-20 / 2020-21 |
£36.8m (fell to £30m in pandemic) |
Baseline compliance level |
|
2022-23 |
£65.4m |
Post-COVID enforcement ramp-up |
|
2024-25 |
£106.9m (Record High) |
7,803 disclosures (£13,713 avg) |
|
2025-26 |
£104.3m |
11,511 disclosures (£9,063 avg) |
|
Cumulative (Since 2013) |
£674.0m+ |
111,843 total disclosures (~4.7% of UK landlords) |
Volume vs. Value: Broadening the Compliance Net
A critical trend revealed by the Price Bailey FOI data is the divergence between disclosure volume and average tax settlement amounts:
- Surge in Disclosures: Voluntary disclosures jumped by 48% year-on-year to 11,511 in 2025-26, up from 7,803 in 2024-25. This represents the highest single-year disclosure volume since 2018-19.
- Falling Average Settlement: Despite nearly double the number of disclosures, the average tax recovered per landlord dropped from £13,713 to £9,063. This shift highlights that HMRC is increasingly ensnaring smaller, lower-yield cases.
The Rise of 'Accidental Landlords' and AI-Driven Data Matching
Tax experts point directly to HMRC’s expanding technological capabilities as the primary driver behind this surge in compliance activity.
Andrew Park, tax investigations partner at
Price Bailey, highlighted the impact of sophisticated automated surveillance:
Expert Perspective — Andrew
Park (Price Bailey): “HMRC’s data-matching capability
has become relentless. Most voluntary disclosures are now prompted by HMRC
nudge letters, and we are seeing a clear trend in larger numbers of smaller
cases. HMRC is casting the net wider and catching landlords who may only have
modest rental income but still have undeclared tax liabilities.
Many of the people being caught out are accidental landlords—people who kept
a property after moving in with a partner, inherited a property, or
temporarily moved abroad. They are often genuinely unaware that they have
taxable profits to disclose.”
HMRC’s official Annual Report and Accounts confirm that officials are leveraging a combination of Land Registry records, third-party data, artificial intelligence, and advanced predictive analytics to identify potential discrepancies. During 2025-26 alone, these intelligence tools helped tax authorities protect or recover over £10bn across all compliance enforcement sectors.
Making Tax Digital (MTD) as an Enforcement Catalyst
The timing of these disclosure records coincides with the landmark implementation of Making Tax Digital (MTD) for Income Tax, which HMRC views as both an operational upgrade and a pivotal tax compliance tool.
- Immediate Requirement (From Friday, 7 August 2026): Landlords with property income exceeding £50,000 must begin submitting mandatory quarterly digital updates to HMRC.
- Phased Expansion (From April 2027): The gross income threshold lowers to £30,000, bringing hundreds of thousands of additional property owners into real-time reporting alignment.
Commenting on the expanding regulatory
burden, Chris Norris, Chief Policy Officer at the National Residential
Landlords Association (NRLA), advised:
Industry Warning — Chris Norris (NRLA): “This data is a clear reminder of how landlords must ensure they have the correct processes in place to help them meet all their tax obligations and to avoid being hit by significant punishments. With MTD’s reach continuing to expand over the coming year, it has never been more necessary for landlords to position themselves so they do not end up on the wrong side of HMRC.”
Strategic Recommendations for Property Owners
Given the UK's estimated 2.4 million private landlords, the 111,843 Let Property Campaign disclosures to date represent approximately 4.7% (nearly 1 in 20) of all property owners. To minimize legal and financial exposure, landlords are advised to take immediate action:
- Review Historical Tax Reporting: Audit rental records, especially for secondary properties, inherited assets, or temporary lets. Unreported income across multiple years compounds statutory penalties and interest charges.
- Utilize Proactive Voluntary Disclosure: Disclosing unprompted under the Let Property Campaign yields significantly lower penalty multipliers than awaiting an official HMRC 'nudge letter' or formal investigation.
- Prepare MTD Digital Infrastructure: Adopt MTD-compliant software ahead of statutory deadliness to maintain accurate digital ledgers and streamline quarterly reporting submissions.