Creating a watertight estate plan is one of the most important steps you can take to protect your wealth and ensure it is passed on according to your wishes.

Yet many people either put it off or overlook key elements, which can lead to the estate facing unnecessary tax or unintended outcomes for their loved ones.

Over the coming years, more wealth is set to transfer between generations than ever before. This, combined with upcoming changes to Inheritance Tax (IHT), means that estate planning is more important than ever.

Read on to discover the five essential elements of a watertight estate plan and how putting them in place could help protect your legacy.

1. Comprehensive Inheritance Tax planning

A well-structured estate plan should include a clear strategy for managing potential Inheritance Tax (IHT) liabilities. With careful planning, you could pass on potentially significant amounts of wealth IHT-free to your beneficiaries.

The two main IHT allowances are:

• The nil-rate band – This is available to everyone and is worth £325,000 in 2025/26.
• The residence nil-rate band – This is available if you pass on your main residence to direct descendants and is worth £175,000. This allowance tapers for estates worth over £2 million and is no longer applicable once an individual estate exceeds £2.35 million.

Married couples can combine their nil-rate bands, meaning you and your partner could collectively pass on up to £1 million IHT-free simply by making full use of them.

Other IHT-planning strategies can further the efficiency of your estate.

For instance, placing assets into trust can help ensure they fall outside of your estate for IHT purposes and are distributed according to your wishes.

Moreover, investing in Business Relief (BR) schemes can allow you to pass on certain assets free from IHT. You can typically pass on up to £2.5 million of eligible assets with 100% relief, and when combined with a spouse or civil partner, you could collectively pass on up to £5 million.

2. An up-to-date will

Research from Today’s Wills & Probate shows that only 37% of UK adults have a will, meaning the remaining 63% risk having their estate distributed under the rules of intestacy.

Even among those who do have a will, many have not updated it to reflect changes in their circumstances. This can lead to unintended outcomes, particularly if your family dynamics or financial position have changed, or if there has been new legislation.

Updating your will is essential to ensure your wishes are carried out. It’s a good idea to review it after major life events, such as marriage, divorce, births, or deaths, or at least every five years.

Keeping your will up to date can also improve tax efficiency. For example, assets you pass to a spouse or civil partner are typically exempt from IHT, and passing your main residence to direct descendants may allow you to benefit from the residence nil-rate band.

3. Lasting Powers of Attorney

A Lasting Power of Attorney (LPA) is a legal document that allows a trusted individual to make decisions on your behalf if you lose mental capacity.

Without an LPA, your family may need to go through a lengthy and potentially costly court process to gain authority to act on your behalf.

There are two types of LPA:

• Property and Financial Affairs
• Health and Welfare

Having both in place ensures that someone you trust can manage your finances and make decisions in line with your preferences, if you’re no longer able to do so.

4. Pension nominations

Pensions currently sit outside your estate for IHT purposes and have traditionally been a highly valuable estate planning tool. However, this is set to change next year, and pensions will fall into the scope of IHT from April 2027.

As such, deciding who inherits your pension is key. If you leave it to your spouse or civil partner, it won’t be liable for tax and can form part of your collective estate, which could be more efficient. Whereas, if you leave it to a child or other relative, it may be liable for IHT.

So, it’s important to update your pension nominations to ensure they reflect your wishes and remain efficient in light of the upcoming changes.

5. A letter of wishes

A letter of wishes is a non-legally binding document that sits alongside your will. It provides additional guidance to your executors or trustees about how you would like your assets to be distributed.

While your will sets out the legal framework, a letter of wishes can offer more flexibility and detail. For example, it can explain your reasoning behind certain decisions, outline how you would like beneficiaries to use their inheritance, or provide guidance on distributing trust assets.

Because it is not legally binding, you can update a letter of wishes more easily than a will, making it a useful tool for keeping your intentions clear as your circumstances change.

Get in touch

A financial planner can help you create a watertight estate plan that’s aligned with your wishes and supports your beneficiaries.

To speak to a financial planner, get in touch.

Email info@blueskyifas.co.uk or call us on 01189 876655.

Please note

This article is for general information only and does not constitute advice. The information is aimed at individuals only.

All information is correct at the time of writing and is subject to change in the future.

Please do not act based on anything you might read in this article. All contents are based on our understanding of HMRC legislation, which is subject to change.

A pension is a long-term investment not normally accessible until 55 (57 from April 2028). The fund value may fluctuate and can go down, which would have an impact on the level of pension benefits available.

The value of your investments (and any income from them) can go down as well as up and you may not get back the full amount you invested. Past performance is not a reliable indicator of future performance.