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Landlords Face £104m Tax Bill from HMRC Crackdown

Landlords face a £104 million tax bill as HMRC s crackdown continues, with record voluntary disclosures highlighting compliance issues.

By David Sampson
28 July 2026
2 min read
UK buy to let mortgage article image for Landlords Face £104m Tax Bill from HMRC Crackdown

TL;DR

  • Landlords have paid £104 million in taxes due to HMRC s increased enforcement.
  • 11,511 voluntary disclosures were made in 2025/26, the highest since 2018/19.

Written by David Sampson for Mortgage118. Last updated 28 July 2026. Reviewed against our editorial standards. Editorial standards. Mortgage118 is a directory — not FCA-authorised and not a mortgage adviser.

Landlords in the UK have collectively paid £104 million to HMRC as part of a tax crackdown, marking the third consecutive year of over £100 million in revenue from voluntary disclosures. This increase highlights HMRC’s enhanced capabilities in identifying landlords who fail to declare rental income, making it important for property owners to ensure compliance.

What is the Let Property Campaign?

The Let Property Campaign (LPC) is an initiative by HMRC aimed at encouraging landlords to declare unpaid tax liabilities. Since its launch in 2013/14, the LPC has recovered £674 million. The recent surge in voluntary disclosures, which reached 11,511 in 2025/26, indicates that landlords are becoming more aware of their tax obligations and the potential penalties for non-compliance.

How is HMRC Identifying Non-Compliant Landlords?

HMRC is increasingly leveraging Land Registry data to track individuals who own multiple residential properties. This data helps them pinpoint landlords who may have undeclared rental income, thereby enhancing their ability to enforce tax compliance. The average amount recovered per disclosure has decreased to £9,063, down from £13,713 in the previous year, suggesting that while more landlords are coming forward, the average tax owed per individual may be lower.

What This Means for Landlords

For landlords, this ongoing crackdown serves as a reminder of the importance of accurate tax reporting. With HMRC’s improved tracking capabilities, property owners should ensure they are fully compliant with tax laws to avoid penalties. Engaging with tax professionals can help landlords navigate their obligations and potentially mitigate risks associated with unpaid taxes.

Frequently Asked Questions

What should landlords do if they haven’t declared rental income?

Landlords who have not declared rental income should consider making a voluntary disclosure to HMRC to avoid penalties. Engaging a tax advisor can provide guidance on the process.

How can landlords ensure they are compliant with tax obligations?

Landlords can stay compliant by keeping accurate financial records, understanding their tax obligations, and seeking advice from tax professionals when needed.

About David Sampson

David Sampson writes about the UK mortgage market for Mortgage118, covering specialist lending, market trends, and practical advice for borrowers. All content is reviewed for accuracy against FCA guidelines and current market data.

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