August 5, 2026 1:40 pm

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Nikka Sulton

Landlords could soon face tougher consequences for mistakes on their tax returns under proposed changes to UK tax legislation.

New measures included in the Finance Bill 2027, which are expected to take effect from April next year, would give HM Revenue & Customs (HMRC) greater powers to pursue tax reporting errors, even where the original mistake was not intentional.

New Powers for HMRC

Under the proposed legislation, HMRC would be able to issue a Customer Correction Notice if it believes a landlord’s tax return contains inaccurate or incomplete information.

The notice would require the landlord to review their tax declaration, check whether an error has been made and submit any necessary corrections within the required timeframe.

The aim is to encourage taxpayers to correct mistakes before they develop into more serious compliance issues.

Failure to Act Could Lead to Penalties

While genuine errors are not automatically treated as deliberate, landlords who ignore a Customer Correction Notice could face financial penalties.

If HMRC believes a taxpayer has failed to respond or deliberately chosen not to correct an identified error, it may reclassify the issue as a deliberate inaccuracy. This could result in significantly higher penalties than those normally associated with accidental mistakes.

The proposed rules place greater responsibility on landlords to respond promptly when contacted by HMRC and ensure their tax records remain accurate.

Why Landlords Should Review Their Tax Affairs

With tax rules becoming increasingly complex, landlords are being encouraged to review their property income declarations carefully before submitting their returns.

Rental income, allowable expenses, mortgage interest relief and capital improvements all have different tax treatments, making errors more likely if records are incomplete or outdated.

As HMRC continues to strengthen its compliance activity and expand the use of data matching, landlords may wish to seek professional advice if they are unsure whether their tax returns are accurate.

Keeping clear financial records and responding quickly to any HMRC correspondence could help landlords avoid unnecessary penalties once the new legislation comes into force.

 

 

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