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The tax residency advice was never the weak link. The gap between it and the next review was. Here's why that matters and how to remedy it without micromanagement.

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The Schengen 90/180 Rule: A Complete Guide

Day counting

The Schengen 90/180-day rule looks simple until you're mid-trip and the maths catches you off guard. Let’s break down how the rolling 180-day window actually works, what's changed now with digital record checks at the border, and the most common ways travellers miscount their days — plus how to know your day count before you book.

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Dangerous Day Counting Assumptions When Leaving the UK

Some of the most dangerous day counting assumptions when leaving the UK come from thinking a day count that looks safe on paper is enough. Three real cases show how ties, work presence and evidence quality can overturn what seemed like a comfortable margin, and what that means for anyone counting on assumptions alone.

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How Do I Count Days for UK Tax?

Day counting

A UK day for tax purposes generally means being in the UK at midnight. But your safe number of days before you trigger UK tax residency depends on your residence history and your UK ties. Here's how to count UK days for tax, along with information on how the rules actually work.

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UK Long-Term Residence: All You Need to Know

Your day count history has a longer relevance to your tax position than most people realise. Since April 2025, spending 10 of the previous 20 years as a UK tax resident can bring your worldwide assets within the scope of UK inheritance tax long after you leave. Here's what that means, and why accurate records are the foundation of understanding your position.

The Best Tax Residency App for HNWIs

Record-keeping

Most day counting apps record where your device was. That is not the same as building a contemporaneous evidence record that holds up in an HMRC residency enquiry. This guide covers spreadsheets, day counting apps, and what the best tax residency app for HNWIs actually needs to do — including what an enquiry costs if your records do not hold up.

A picture of Sarah Scala, a Daysium Founding Partner

What a Tax Enquiry Actually Looks Like

Receiving a letter from HMRC is rarely the beginning of the story. By the time it lands, they already know more than most taxpayers expect. We sat down with Daysium Founding Partner and the Founder of UK's Contentious Tax Group, Sarah Scala, to unravel what a tax inquiry looks like, and why what you do before it matters most.

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The New Architecture of Private Client Services

Record-keeping

As the global UHNW population grows and client lives become genuinely multi-jurisdictional, the gap between front-office excellence and compliance infrastructure is widening. This article examines what the most effective private client services firms are doing differently, and why the evidence layer is now where relationships are won and lost.

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