Patrick Kearney v The Commissioners for HMRC
Decision date: 14 January 2026
Neutral citation: [2026] UKFTT 125 (TC)
Overall AI summary confidence: high
Short overview
This short overview is intended to summarise the case, issues and outcome so far as they are supported by the judgment.
AI confidence in this short overview: high
This appeal concerned whether Patrick Kearney was UK tax resident for 2004/05, 2005/06, 2006/07 and 2009/10, whether HMRC’s discovery assessments were valid, and whether penalties for careless inaccuracies were payable. The Tribunal concluded on the multifactorial evidence that Mr Kearney remained UK resident for the Relevant Period, that Officer Shanks validly made discovery assessments (including reasonable estimates), and that Mr Kearney was careless in his self-assessments so penalties applied but were reduced to 15% of the tax at issue. Appeals against the tax assessments were dismissed; penalty appeals were allowed only to the extent of reducing the penalty loading.
Ratio decidendi
This summary is intended to identify the ratio decidendi, meaning the legal reasons for deciding and the binding part of the decision.
AI confidence in this ratio decidendi summary: high
The decision applies a multifactorial test for residence and requires a “distinct break” in the taxpayer’s pattern of life to cease UK residence; day counts alone are not decisive. For discovery assessments an officer need not prove insufficiency on the balance of probabilities but must have information that reasonably points to an insufficiency, and honest, genuine reasoned estimates based on available material can satisfy the objective requirement. Where a taxpayer relies on professional advice, failure to obtain updated or specific advice when aware of facts inconsistent with that advice can amount to negligence causing an inaccuracy.
Obiter dicta
This summary is intended to identify obiter dicta, meaning observations made by the way that were not necessary to deciding the case and are not binding.
AI confidence in this obiter dicta summary: medium
The Tribunal made observations on the scope and limits of best-judgment estimation in assessments and suggested that where some components of an assessment are reasonable and others are not, the appropriate remedy is correction on appeal rather than wholesale quashing. It also commented that advisers’ general or imprecise letters may leave taxpayers under an obligation to obtain further tailored advice.