Effective Estate Planning – the best investment any High-Net-Worth Client can make

April 23, 2026

For High-Net-Worth (HNW) individuals, Estate planning is more than making a Will; it is a strategic, long-term investment in family stability, tax efficiency, and asset protection. With Estates that are more likely to cover multiple jurisdictions, involve business interests, feature dependants with varying needs, and consist of assets of considerable value, HNW individuals face significantly elevated risks of litigation and depreciation of wealth when plans are incomplete, inconsistent, or unclear.

Recent statistics demonstrate the vulnerability and the necessity for protection against disputes. In the United Kingdom, probate disputes ending in Court proceedings have increased by 37% in the last decade, and attempts to have a Will ruled invalid have risen by 61% in the past 5 years. Despite a significant risk of litigation to Estates, many individuals continue to fail to implement effective Estate planning strategies, with Intestacy cases having risen 17% in the last 5 years. Considering this, effective Estate planning continues to emerge as one of the most valuable investments that any individual, let alone any HNW individual, can make.

This article looks at three high-profile examples which illustrate what can happen when HNW Estate planning goes wrong and aims to highlight three different, but common, Estate planning failures that HNW clients should proactively seek to avoid.

1. Prince – When no Will means no control

In 2016, the passing of musician Prince triggered a multi-million-dollar tax dispute, and a six-year legal battle over entitlement to his Estate as he did not make a Will and so died Intestate.

The first problem faced in the Administration of Prince’s Estate was the agreed value of the Estate. Prince’s family had submitted a valuation of $82 million, but the IRS disagreed, instead valuing the Estate at $163 million. An eventual settlement value of $156 million was reached.

The second, and arguably more complex, problem was establishing who was entitled to inherit Prince’s Estate. Without any clear instruction from Prince himself in the form of a Will, the Courts were forced to determine the rightful heirs to his Estate. After six years of litigation, the Estate was split into equal shares between his six half-siblings.

For years, Prince’s assets were effectively frozen whilst administration costs to the Estate continued to increase dramatically, and private family and financial matters became public and contested.

The issues faced in the administration of Prince’s Estate highlight that Intestacy is not merely an oversight in respect of paperwork, but a catastrophic loss of control over hard-earned wealth. Without a Will, even a meticulously built financial empire becomes an open battlefield for:

  • Tax authorities
  • Distant relatives
  • Claimants and opportunists
  • Public scrutiny
  • Lengthy and difficult legal processes

For HNW individuals, Intestacy simply is not an option.

2. Aretha Franklin – When document chaos creates litigation

In contrast to Prince, the Estate of Aretha Franklin became complex due to the discovery of Aretha having made two Wills.

Aretha was originally considered to have died Intestate, leading to an equal division of assets between her four children. But after two Wills were located providing differing instructions, one a notarised Will dated 2010 stored in a safe, and the other a handwritten Will dated 2014 stuffed under a couch cushion, the Estate plummeted into disarray.

The contradictory instructions in the two Wills created a five-year dispute amongst her four children, including over issues such as:

  • Which document reflected her true wishes
  • Who should control her Estate as Personal Representatives
  • Who is entitled to her “crown jewel” property, worth $1.1 million

In 2023, a jury in Michigan ruled that the 2014 Will was valid and therefore governed her Estate. However, at the time of attending Court, Aretha’s Estate was valued at $6 million, a dramatic decrease from the initial $80 million estimation in 2018.

HNW individuals often revise their Estate intentions over time. However, failing to revoke earlier Wills or relying on informal, handwritten updates creates substantial legal uncertainty. In order to avoid similar issues, HNW individuals should ensure that:

  • Every new Will should formally revoke previous versions
  • Copies must be stored securely and consistently
  • Changes should be made by an experienced Solicitor
  • Digital and physical document trails should be effectively recorded

For HNW individuals, a single, clear, professionally executed Estate plan protects wealth from unnecessary and expensive disputes.

3. George Michael – When ex-partners pursue provision

A growing risk for high-value Estates is litigation from individuals who make a claim against the Estate under the Inheritance (Provision for Family and Dependants) Act 1975, even if the Will intentionally excludes them. HNW individuals are increasingly targeted for Inheritance Act claims, because the award for a successful claim could be considerable.

The Estate of George Michael, worth £97 million, is a prime example. George’s former partner, Kenny Goss, whom he dated between 1996 and 2009, brought a claim under the Inheritance Act, arguing financial dependence on George. Kenny confirmed that not only did George financially support him throughout their relationship, but also up until his death, and he relied on the money from George for his living expenses.

Kenny’s claim was settled privately in 2021, highlighting how Inheritance Act claims can burden even a well-drafted Will with prolonged uncertainty and negotiation. It is important to note that wealth and generosity often give rise to expectations, and expectations can become legal claims. This is especially true for:

  • Former partners
  • Estranged adult children
  • Long-term companions
  • Those you financially support during your lifetime

Failing to plan for litigation leaves the Estate wide open to opportunistic claims and expensive settlements. HNW individuals must ensure:

  • Lifetime financial support is carefully documented
  • A letter of wishes explains the reasoning behind exclusions
  • Trust structures are used to direct provision with certainty
  • Potential claimants are identified and addressed proactively
Why HNW Estates are particularly vulnerable to Estate planning issues

The examples above demonstrate enhanced consequences of universal risks, but HNW Estates face additional complexities that must be considered, such as:

  • Cross-border property and residency
  • Significant tax exposure
  • High-value business holdings
  • Large blended families
  • Offshore investments and trust structures
  • Valuable Intellectual Property
  • Publicity and reputational considerations

Ultimately, with greater value comes higher scrutiny, both from HMRC and potential claimants.

Core Elements of Effective HNW Estate Planning

1. Wills for Estate Devolution

Your Will should be well-considered, drafted by a Solicitor, and periodically reviewed (recommended at least every 3 years or where there are financial or family changes) to ensure that your wishes are best reflected.

2. Trust Structures for Protection and Control

You can consider Trusts like Discretionary Trusts, Life Interest Trusts or Family Investment Companies to provide tax efficiency and shield against claims.

3. Planning for Potential 1975 Act Claims

If you are seeking to exclude potential claimants from your Will, you should be providing evidence-based reasoning, considered with a Solicitor to ensure proper documentation. Lifetime agreements or financial arrangements can also deter challenges.

4. International Coordination

If you have assets in other countries, you should consult a Solicitor in respect of these assets and ensure that when drafting a Will, you are not revoking a Will in another jurisdiction, otherwise your Estate may default to heirship rules in those jurisdictions.

5. Carefully Chosen Executors and Trustees

You should consider professional Executors and Trustees rather than family members, to avoid the potential of emotions stalling the legal process.

HNW individuals can avoid pitfalls with strategic, proactive, and comprehensive Estate planning that:

  • Preserves wealth
  • Reduces the risk of a claim
  • Ensures privacy
  • Protects family relationships
  • Provides security of legacy

In short, Effective Estate planning is the single best investment a HNW client can make.

If you have questions regarding this article, or you would like to get started with your Estate planning today, please get in contact with our Private Wealth and Inheritance Team.

Charlotte Drury-Woods
Partner, Head of Private Wealth & Inheritance
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This reflects the law and market position at the date of publication and is written as a general guide. It does not contain definitive legal advice, which should be sought in relation to a specific matter.

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