Understanding the Basics of Inheritance Tax

Inheritance tax is charged on the value of a person’s estate when they die. The estate includes property, savings, investments and other assets, less any outstanding debts. In the UK, inheritance tax is currently charged at 40 per cent on the part of the estate that exceeds the available tax‑free allowances. For many families, these allowances mean that little or no inheritance tax is payable but understanding how they work is essential.

The nil rate band

The foundation of inheritance tax planning is the nil rate band. This is the amount that can be passed on free of inheritance tax, regardless of who inherits the estate. The nil rate band is currently £325,000 per person.

If an estate is worth £325,000 or less, there will usually be no inheritance tax to pay. Anything above this level is potentially taxable, subject to other allowances and reliefs. Importantly for married couples and civil partners, any unused nil rate band on first death can normally be transferred to the surviving partner. This means that on the second death, the nil rate band can be as high as £650,000.

The residence nil rate band

Alongside the standard nil rate band is an additional allowance known as the residence nil rate band. This was introduced to help families pass on the family home to the next generation without a large tax charge. The residence nil rate band is currently £175,000 per person.

This allowance only applies when a qualifying residential property is left to direct descendants. Direct descendants include children, step‑children, adopted children and grandchildren. When the conditions are met, the residence nil rate band sits on top of the standard nil rate band, increasing the total amount that can be passed on free of inheritance tax.

For an individual, this can mean up to £500,000 passing tax‑free if their home is left to their descendants. For married couples and civil partners, the unused residence nil rate band can also be transferred on first death, meaning that up to £350,000 may be available on second death. Combined with the transferable nil rate band, this can result in up to £1 million being passed on without inheritance tax.

The estate value limit and tapering rules

The residence nil rate band is subject to an important restriction for larger estates. If the total value of the estate exceeds £2 million, the residence nil rate band is gradually reduced. For every £2 that the estate is above this threshold, £1 of the residence nil rate band is lost.

This tapering rule can have a significant impact on inheritance tax planning. Once an estate reaches a certain level, the residence nil rate band can be reduced to zero, meaning that only the standard nil rate band remains available. In these cases, early planning becomes especially important to manage the overall value of the estate.

Downsizing and the residence nil rate band

Many people worry that downsizing later in life, or selling their home to move into care, might cause them to lose the residence nil rate band. The rules are more flexible than this. Provided that a person has owned a qualifying residence at some point, it may still be possible to benefit from the allowance, even if the property has been sold. A downsizing addition can apply where assets of a similar value are left to direct descendants.

Conclusion

Inheritance tax is not just about a single allowance. The nil rate band and residence nil rate band work together, and when combined with spousal exemptions, lifetime gifting and well‑structured wills, they can dramatically reduce the amount of tax payable. For many families, the available allowances mean that inheritance tax is far less of a concern than it is often perceived to be.

Understanding how these bands operate, and ensuring assets pass in the right way, can make a substantial difference to the outcome for your loved ones. Taking advice and reviewing plans regularly can help ensure that valuable allowances are not wasted and that as much of your estate as possible passes to your beneficiaries.