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Louise Sayers
June 23, 2026
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Hoxton Blog • Estate Planning In The UK: Five Mistakes To Avoid
Inheritance tax was once a concern for the very wealthy. Rising property values, frozen thresholds and significant rule changes on the horizon mean that is no longer the case. We've put together this guide to the five most common estate planning mistakes and how to avoid them. By addressing each of these pitfalls early, families can protect more of their wealth, reduce unnecessary tax bills and maximise the value of the estate they pass on.
Inheritance tax (IHT) was once seen as a concern only for the very wealthy. That perception is rapidly changing. A combination of rising property values, frozen tax-free thresholds, and significant upcoming rule changes means that more and more ordinary UK households are now being drawn into the IHT net - often without realising it.
Under current rules, IHT is charged at 40% on estates above the £325,000 nil-rate band, with an additional £175,000 residence nil-rate band available when passing a family home to direct descendants. Yet property price growth alone has been enough to push many families over these thresholds in recent years.
The stakes are set to rise further from April 2027, when the government’s proposed reforms will bring unused defined contribution pension funds into estates for IHT purposes for the first time. Previously, pensions were widely regarded as one of the most tax-efficient ways to pass on wealth. That is about to change - and for many families, the impact will be significant.
The good news is that, with the right planning, there is much that can be done. But good intentions alone are not enough. Many people make avoidable mistakes that leave their loved ones facing unnecessary tax bills. Here are five of the most common - and how to avoid them.
Effective estate planning depends on accurate, up-to-date information - yet poor record-keeping is one of the most common failings we see. Without a clear picture of your assets, liabilities, pension values, investments, and existing arrangements, it is impossible to plan efficiently or to ensure your wishes are carried out as intended.
This matters particularly when it comes to gifts. HMRC requires that gifts made within seven years of death be reported and potentially taxed, yet many families struggle to reconstruct a history of what was given, to whom, and when. Without records, executors may face penalties or disputes.
Good practice includes maintaining a clear schedule of your assets and their approximate values, keeping records of all significant gifts including dates and amounts, documenting any trusts you have established, and ensuring that the location of key documents - wills, pension nominations, insurance policies - is known to your executors or a trusted family member.
It is also worth reviewing records regularly. Assets change, values shift, and family circumstances evolve. A record that was accurate three years ago may tell a very different story today.
For married couples and civil partners, the rules around IHT provide significant advantages - but only if they are used properly. Transfers between spouses and civil partners are entirely exempt from IHT, meaning that on the first death, the entire estate can pass to a surviving partner tax-free.
Critically, any unused nil-rate band from the first death can be transferred to the survivor, potentially doubling their threshold to £650,000 - or up to £1 million when the residence nil-rate band is included. Yet couples often fail to plan in a way that makes full use of this transferable allowance.
Equally, many couples default to leaving everything to each other without considering the longer-term picture. While the spousal exemption provides immediate relief, it can simply defer a larger IHT liability to the second death, by which time fewer planning options may remain.
Couples should plan together, considering the combined estate as a whole. This includes reviewing how assets are held (jointly or separately), whether wills are aligned and up to date, and what strategies can be put in place during both lifetimes to reduce the eventual liability. Waiting until one partner has died leaves fewer tools available.
One of the most straightforward ways to reduce a future IHT liability is also one of the most underused: making gifts during your lifetime. Each individual has a range of gifting allowances that, used consistently over time, can make a meaningful difference to the size of a taxable estate.
These include:
· An annual exemption of £3,000 per person, which can be carried forward one year if unused
· Small gift exemptions of up to £250 per recipient per year
· Wedding and civil partnership gifts of up to £5,000 to a child, £2,500 to a grandchild, or £1,000 to anyone else
· Regular gifts out of surplus income, which - if structured correctly - are immediately exempt from IHT regardless of their size
· Larger one-off gifts, known as potentially exempt transfers, which become fully exempt if the donor survives seven years
Many people are also choosing to use pension withdrawals to help younger family members directly - contributing towards university fees, repaying student debt or helping with a first home deposit. This approach reduces the taxable estate while allowing you to see the benefit of your generosity during your lifetime.
Despite the availability of these allowances, many people simply do not use them - either through a lack of awareness or a reluctance to reduce their own financial security. Careful cash-flow planning can help establish how much can safely be gifted without compromising retirement income.
Making gifts is a sound strategy - but only if those gifts are genuine. HMRC has strict rules around what are known as gifts with reservation of benefit: situations where assets are technically given away but the donor continues to benefit from them.
The most common example is the family home. Some people attempt to reduce the value of their estate by transferring their property to their children while continuing to live in it rent-free. In most cases, this does not work. Where the donor continues to occupy or benefit from a gifted asset, HMRC treats it as though the gift was never made - it remains in the estate for IHT purposes.
Similar issues can arise with gifts of investment assets where the original owner continues to receive income, or with arrangements designed to look like gifts but which involve the donor retaining some form of control.
The consequences of getting this wrong can be significant: not only does the asset remain taxable, but the arrangement may also give rise to income tax charges. For a gift to be effective, it must be unconditional, and the donor must genuinely give up all benefit. If you are considering any form of gifting strategy involving assets you currently use or benefit from, taking professional advice before proceeding is essential.
Trusts can be one of the most powerful tools in estate planning, yet they are frequently misunderstood or overlooked entirely. Used properly, trusts can help control how and when assets pass to beneficiaries, protect wealth from challenges such as divorce or creditor claims, and, in certain circumstances, reduce the IHT liability on an estate.
Common applications include discretionary trusts, which allow trustees to distribute assets flexibly among a class of beneficiaries, bare trusts for minor children and loan trusts or discounted gift trusts, which allow individuals to access a future income stream while removing the bulk of an asset’s value from their estate.
Life insurance policies, too, can be written in trust as standard. Without this simple step, a life insurance payout will form part of the deceased’s estate and may be subject to IHT at 40% - the opposite of what most people intend. Placing a policy in trust ensures the proceeds pass directly to beneficiaries outside the estate, quickly and without incurring an unnecessary tax charge.
The rules governing trusts are complex, and the wrong structure can create unintended tax consequences. This is not an area where it pays to proceed without professional guidance. A qualified financial adviser can help identify which trust structures are suitable for your circumstances and ensure they are established correctly.
The IHT landscape is changing, and the window for effective planning is narrowing. From April 2027, pension funds that were once largely outside the IHT net will be drawn in, exposing many more families to significant potential liabilities. Acting now - before those changes take effect - provides the greatest range of options.
None of the mistakes above are inevitable. With clear records, joined-up planning between partners, disciplined use of gifting allowances, properly structured gifts, and well-considered trust arrangements, it is possible to significantly reduce the IHT burden on your estate and ensure your wealth reaches the people you intend it to.
There is no single solution that suits everyone. The right approach depends on the size and nature of your estate, your income needs in retirement, your family circumstances, and your long-term goals. What is consistent across every situation, however, is that early, professional advice makes a substantial difference.
If you would like to understand how the forthcoming changes may affect your position, or if you would like to review your current estate planning arrangements, we would be delighted to help. Please do not hesitate to get in touch.
If you would like to speak to one of our advisers, please get in touch today.
Louise Sayers
June 23, 2026
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