Understanding Inheritance Tax Thresholds and Exemptions

When Inheritance Tax Starts to Bite

Inheritance tax (IHT) has a reputation for being complicated, but the core idea is simple. When you die, the value of your estate is calculated. Anything above the available thresholds is taxed at 40%, and the tax is normally paid by the estate before beneficiaries receive their share.

Most estates in the UK still pay nothing, because the thresholds are generous when used properly. The standard nil-rate band is £325,000. That figure has been frozen for several years and is set to stay at that level until at least 2030, so more estates are gradually drifting into the net as property prices rise.

Two other things matter from the outset. First, gifts made in the seven years before death may be added back into the estate. Second, assets held in certain trusts or qualifying business structures may be treated differently. Keeping records is far easier than trying to reconstruct a paper trail years later.

The Residence Nil-Rate Band and the Family Home

Alongside the standard allowance sits the residence nil-rate band (RNRB). It adds up to £175,000 where your main home, or the proceeds of its sale, passes to a direct descendant — a child, stepchild, grandchild or their spouses.

• The RNRB is reduced by £1 for every £2 your estate exceeds £2 million, so it can disappear entirely in larger estates.
• If you downsize or sell the family home, a downsizing addition may preserve some of the allowance.
• Any unused RNRB can be transferred to a surviving spouse or civil partner, just like the standard nil-rate band.

For a married couple with children, that can mean up to £1 million of allowance between them — £325,000 plus £175,000, doubled on the second death. It is one of the most valuable reliefs available, and it only applies if the paperwork reflects your intentions.

Exemptions and Reliefs That Reduce the Bill

Thresholds are only half the story. A range of exemptions can shrink the taxable estate itself.

• Spouse and civil partner exemption. Gifts between UK-domiciled spouses are free of IHT, which is why the first death often triggers no tax at all.
• Charitable giving. Leave at least 10% of the net estate to charity and the rate on the rest drops from 40% to 36%. Gifts to charities are themselves exempt.
• Business and agricultural relief. Trading businesses, certain shares and farmland can qualify for substantial relief. Rules here have been tightened in recent Budgets, with changes phasing in from April 2026, so specialist advice is worth the fee.
• Annual gifting allowances. You can give away £3,000 each tax year, plus £250 to any number of people, and wedding gifts of up to £5,000 to a child.
• Normal expenditure out of income. Regular gifts from surplus income — paying a grandchild's school fees, for example — can fall outside the estate entirely if you can show a pattern and that your standard of living is unaffected.

Small gifts, applied consistently, can move a surprising amount out of the estate over a decade or two.

The Seven-Year Rule and Taper Relief

Most lifetime gifts are potentially exempt transfers. Survive seven years after making one and it drops out of your estate completely. Die sooner and it is counted, though taper relief may reduce the tax on the gift itself.

Taper relief runs from three years after the gift: the tax on that gift falls to 32% between three and four years, 24% between four and five, 16% between five and six, and 8% between six and seven. It reduces the tax rate, not the value of the gift, and it does not apply to the estate itself. Gifts to individuals are the most straightforward; gifts into trusts can trigger immediate charges, so take advice first.

Practical Steps to Plan Ahead

Planning is mostly about tidiness and timing rather than complex schemes. A few sensible moves cover the majority of families:

• Review your will. An out-of-date will can waste the RNRB or send assets to the wrong people. Check it every few years and after any major life event.
• Write life insurance in trust. A payout in trust usually sits outside the estate and can provide cash to meet the bill without selling assets.
• Watch pension changes. From April 2027, unused pension funds are expected to be brought into the estate for IHT purposes, which may change the order in which you spend your savings.
• Keep a gift log. Note dates, amounts and recipients. HMRC will want evidence, and memories fade.
• Use your allowances each year. Unused annual exemptions do not roll over indefinitely, so a little forward planning pays.
• Revisit the numbers. Thresholds, reliefs and property values all move. A plan made five years ago may no longer fit.

Inheritance tax rarely needs to be feared, but it does reward attention. Whether you are an individual reviewing your will or a small business owner with trading assets and shares, a straightforward conversation with a solicitor or adviser can usually identify the allowances you are entitled to — and the ones you are quietly leaving on the table.