Inheritance tax has a peculiar reputation in British public life. It is either dismissed as a tax that only affects the very wealthy, or it is feared as an inevitable 40% slice that no one can avoid. Both beliefs are wrong, and both cost families significant sums every year. The reality of inheritance tax in the UK is more nuanced, more manageable, and more important to understand than most people assume.
The first myth is that inheritance tax is only for millionaires. In fact, the threshold for inheritance tax, the nil-rate band, is £325,000 per person. If you own a house in the South East, have a decent pension pot, and some savings, you can easily exceed this threshold without considering yourself wealthy. With property prices where they are, ordinary families who bought their homes decades ago now find themselves unexpectedly caught in the inheritance tax net. Families who take a more deliberate approach to estate planning often discover that the tax liability they feared is far more manageable than expected, simply because they understood the allowances available to them rather than assuming they were exempt.
The residence nil-rate band adds further complexity. This additional allowance, currently up to £175,000 per person, applies when a main residence is passed to direct descendants. Combined with the standard nil-rate band, a married couple can potentially leave £1 million to their children without paying inheritance tax. However, this allowance is tapered for estates over £2 million, and it only applies in specific circumstances. Many families fail to claim it because their wills were written before it existed, or because their property is held in trust arrangements that disqualify them.
The second myth is that giving money away always solves the problem. While gifts can be an effective inheritance tax planning tool, they come with significant caveats. The seven-year rule means that gifts only fall outside your estate for tax purposes if you survive seven years after making them. Die within that window, and the gifts are added back to your estate, potentially with taper relief reducing the tax depending on how many years you survived. In addition, giving away assets you still benefit from, such as continuing to live in a house you have gifted to your children, falls foul of the gifts with reservation of benefit rules and is completely ineffective for tax purposes.
Many parents also fail to consider their own security. Once you have given money away, you cannot easily get it back if your circumstances change. The children you gifted to may divorce, become bankrupt, or simply make poor decisions. What felt like generous tax planning can leave you financially vulnerable in your later years. Any gifting strategy must balance tax efficiency with your need for financial security and control.
The third myth is that trusts are only for the super-rich. In reality, trusts are practical tools used by families of relatively modest means to control how and when money is passed to the next generation. They can protect assets from divorce, ensure that vulnerable beneficiaries are properly provided for, and create tax efficiencies that would not be available through outright gifts. The tax treatment of trusts has become more complex in recent years, but they remain valuable structures for families who want to exert some control over their legacy rather than simply handing over lump sums.
Setting up a trust does not have to be complicated or expensive, but it does require professional advice. The type of trust, bare trust, discretionary trust, interest in possession trust, affects both the tax treatment and the level of control retained. Choosing the wrong structure can create unexpected tax charges or fail to achieve the intended protection. However, dismissing trusts entirely because of these complexities means missing out on legitimate planning opportunities.
The fourth myth is that spouses automatically pay no inheritance tax, so planning is unnecessary. While it is true that transfers between spouses are exempt from inheritance tax, this can actually create a bigger problem if not handled correctly. If the first spouse to die leaves everything to the survivor, the estate benefits from the spouse exemption but wastes the first spouse’s nil-rate band. When the survivor dies, only one set of allowances is available. By using a will trust or simply leaving some assets to children or other beneficiaries on the first death, couples can ensure both nil-rate bands are used efficiently.
The transferable nil-rate band, announced in 2007 and introduced in the Finance Act 2008, allows the unused portion of a deceased spouse’s allowance to be transferred to the survivor. This helps, but it is not automatic, a claim must be made on the second death, and paperwork must be in order. More importantly, if the first spouse used part of their allowance through lifetime gifts or bequests to others, the transferable amount is reduced. Proper planning on the first death maximises the available allowances for the second.
The fifth myth is that inheritance tax is unavoidable, so there is no point planning. This is perhaps the most expensive myth of all. The UK tax system contains numerous allowances, reliefs, and exemptions that can legitimately reduce or eliminate inheritance tax. Business Property Relief can remove business assets from the tax net entirely, though from April 2026 this will be capped at £1 million with only 50% relief above that amount. Agricultural Property Relief does the same for farmland, subject to the same upcoming cap. Regular gifts out of income, if they meet certain conditions, are immediately exempt with no seven-year wait. Charitable bequests can reduce the rate of tax on the entire estate.
Each of these reliefs has specific conditions and requires proper documentation. Business Property Relief, for example, requires that the business has been owned for at least two years and is not mainly engaged in investment activities. Agricultural Property Relief has complex rules about occupation and use. Attempting to claim these reliefs without understanding the requirements leads to rejected claims and unexpected tax bills.
The cost of these myths is not just financial. Families who believe they are exempt from inheritance tax often fail to plan at all, leaving their executors to deal with unexpected liabilities. Those who believe nothing can be done miss opportunities to save thousands. Inheritance tax is not a voluntary tax, but it is a tax that rewards those who understand the system and plan accordingly. The first step is recognising that the myths you have accepted may be costing you more than you realise.