Inheritance Tax UK: How Families Can Legally Reduce Their Bill

UK families can reduce inheritance tax by using their full nil-rate band (£325,000 per person, up to £1 million for couples with the residence nil-rate band), making gifts more than seven years before death, placing assets into a family discretionary trust, and making use of the annual £3,000 gift allowance. Spouse and civil partner transfers are always IHT-free. Business Property Relief, charitable giving, and writing life insurance in trust are also powerful tools. Together, these strategies can significantly reduce — or eliminate — your family's inheritance tax liability.

What Is Inheritance Tax?

Inheritance tax (IHT) is a tax on the estate of someone who has died. In the UK, it is charged at 40% on the value of your estate that exceeds your available nil-rate band.

The key thresholds for 2026:

Nil-rate band: £325,000

The first £325,000 of your estate passes free from IHT. This threshold has been frozen since 2009 — and with property prices rising sharply over the same period, far more families are now caught by IHT than those who set the rules intended.

Residence nil-rate band (RNRB): £175,000

An additional allowance of up to £175,000 applies when you leave your main home to direct descendants (children, stepchildren, grandchildren). Combined with the standard nil-rate band, this takes a single person's total threshold to £500,000.

The couples allowance: up to £1 million

Married couples and civil partners can transfer any unused nil-rate band to the surviving partner. This means a couple can pass up to £1 million to their children free from IHT — provided the estate includes the family home passed to direct descendants.

The 7-year rule on gifts

Any gift you make more than seven years before your death falls completely outside your estate for IHT purposes. Gifts made within three to seven years of death may still attract a reduced IHT charge under taper relief. Gifts made within three years of death are treated as part of your estate.

Who Pays Inheritance Tax in the UK?

IHT is paid by the estate — not the beneficiaries personally. The executors named in your will are responsible for calculating the IHT owed, completing the HMRC forms, and paying the tax before probate can be granted.

There are common misconceptions worth clearing up:

• Beneficiaries don't usually pay IHT directly — it comes from the estate before anything is distributed
• IHT is due within six months of the end of the month in which the person died; interest accrues on unpaid amounts after that
• Property can create a liquidity problem — if most of your estate is tied up in property, the executors may need to sell it to fund the tax bill, even if that wasn't what you wanted
• Jointly owned property passes to the surviving joint owner automatically (outside the will and probate), but it is still included in your estate for IHT purposes

Understanding that IHT is the estate's problem — not a personal tax on your beneficiaries — is important. It means the planning you do now directly determines how much of what you've built actually reaches your family. Assets that are not in a trust may also go through probate, adding delay and cost before beneficiaries receive anything — another reason to structure your estate proactively.

7 Legal Ways to Reduce Your Inheritance Tax Bill

1. Use Your Full Nil-Rate Band Allowance

Every individual has a nil-rate band of £325,000. If you're a homeowner leaving property to direct descendants, you also have the £175,000 RNRB on top. Make sure your estate is structured so that both allowances are used to their maximum — particularly important in second marriages, trusts, or estates with complex asset structures where the RNRB can be inadvertently lost.

2. Pass Assets to a Spouse or Civil Partner

Transfers between spouses and civil partners are completely exempt from IHT — there is no limit on this exemption. If you leave everything to your partner, no IHT is due at that point. Their estate then benefits from your transferred nil-rate band when they die, potentially sheltering up to £1 million from IHT altogether.

Note: This exemption does not apply to unmarried partners — see below.

3. Set Up a Family Discretionary Trust

Assets placed in a properly structured family discretionary trust are generally outside your estate for IHT purposes. They don't form part of what HMRC assesses at death.

Transfers into trust up to the nil-rate band (£325,000) are generally free from entry charges. Trusts are subject to 10-year periodic charges (up to 6% on value above the nil-rate band) and exit charges — but for families whose trust assets fall within the nil-rate band, these charges are zero. The long-term IHT saving on a well-structured trust significantly outweighs the costs of running it. Note that once your trust is in place, you will need to comply with HMRC's Trust Registration Service requirements — mandatory for almost all UK trusts since 2022.

4. Make Use of the Annual Gift Allowance

HMRC allows everyone to give away £3,000 per year completely free from IHT (the annual exemption). You can carry forward unused allowance from the previous year — so if you haven't gifted anything this year or last, you can give away £6,000 immediately with no IHT implications.

Additional exemptions:

• Small gifts exemption: up to £250 to any number of individuals per tax year
• Wedding/civil partnership gifts: £5,000 to a child, £2,500 to a grandchild, £1,000 to anyone else
• Normal expenditure out of income: regular gifts from surplus income (not capital) that don't affect your standard of living are immediately exempt — no seven-year clock applies

5. Business Property Relief and Agricultural Property Relief

If your estate includes a qualifying business or agricultural assets, IHT relief may reduce the charge significantly:

• Business Property Relief (BPR): up to 100% relief on qualifying business assets — including shares in unlisted companies, interests in partnerships, and certain trading businesses
• Agricultural Property Relief (APR): up to 100% relief on agricultural land and property used for farming

These reliefs can be powerful but have complex qualifying conditions. Structures must genuinely meet the requirements — HMRC scrutinises BPR claims closely. A family investment company can also be a powerful vehicle for holding wealth tax-efficiently, particularly for families with significant investable assets.

6. Leave 10% or More to Charity

If you leave at least 10% of your net estate to charity, the IHT rate on the remainder reduces from 40% to 36%. For larger estates, this can produce a meaningful saving — and you're also leaving something significant to causes you care about.

7. Write Your Life Insurance Policy in Trust

If you have a life insurance policy, the proceeds form part of your estate by default — meaning they could be subject to IHT at 40%. Writing your policy in trust takes it outside your estate entirely. The proceeds pay out directly to the trustees (usually your family) rather than into your estate, avoiding the IHT charge and avoiding the delay of probate.

This is one of the simplest and most overlooked IHT planning steps available. It costs nothing to do and makes an immediate difference.

Trusts and Inheritance Tax — A Closer Look

A family discretionary trust works by legally removing assets from your personal estate. Once assets are properly settled into trust — and provided you don't retain a personal benefit from them — they are held by the trustees, not by you.

Why this matters for IHT: HMRC charges IHT on the value of what you own at death. If you don't own it — because the trust does — it isn't in scope. For families with significant property or business interests, this can make a substantial difference to the eventual tax bill.

Trustees manage the assets on behalf of the beneficiaries. In a family trust, the settlor (you) typically acts as one of the trustees alongside a spouse or adult child. Control doesn't disappear — it is formalised. The Trust Deed sets out what the trustees can and cannot do. Your Letter of Wishes records how you'd like them to exercise their discretion.

The 7-year rule interacts with trusts. Transfers into trust are treated as chargeable lifetime transfers for IHT purposes. If you die within seven years of making a transfer that exceeded the nil-rate band, an additional IHT charge may arise. Setting up a trust early — before your estate approaches the threshold — is the way to avoid this problem.

For families with property or business interests, a discretionary trust is not a niche tax vehicle. It is the most robust legal structure available for ensuring your wealth reaches your family intact.

What Documents Do You Need?

Effective IHT planning requires more than one document — the strongest approach combines three that work together:

Trust Deed — the legal structure that holds assets outside your estate. Without a properly drafted Trust Deed, there is no trust and no IHT protection.

Letter of Wishes — your instructions to the trustees. Tells them who you had in mind, how you'd like assets managed, and what your priorities are. Not legally binding, but essential guidance for trustees acting after you're gone.

Will — works alongside the trust to ensure assets not already in the trust pass to the right people in the right way. Without a will, the intestacy rules apply — and they may not reflect your intentions at all.

All three documents interact. A will that is inconsistent with your trust structure can undermine both. These documents should be prepared together, not in isolation.

Inheritance Tax and Unmarried Partners

This is one of the most consequential — and most commonly misunderstood — aspects of IHT in the UK.

The spousal exemption only applies to married couples and civil partners. Unmarried partners, regardless of how long they have lived together, how many children they have, or how intertwined their finances are, receive no automatic IHT exemption.

If an unmarried partner dies without a will, their estate passes under the Rules of Intestacy — and the surviving partner receives nothing. Not only is there no IHT exemption; there is no inheritance at all.

Even with a will leaving assets to an unmarried partner, the transfer is subject to IHT at 40% above the nil-rate band. There is no relief equivalent to the spousal exemption.

For cohabiting couples, this is an urgent planning issue. The structural answer is a combination of a trust (to hold assets outside the estate), a properly drafted will (to ensure the partner inherits what they should), and potentially life insurance in trust (to provide liquidity for the IHT bill without forcing a property sale).

IHT planning is not a last-minute exercise. The most effective strategies — trusts, gifts, structural planning — require time to work. The seven-year clock on gifts only starts once the gift is made. A trust only shelters assets that have been genuinely transferred. A will only governs what happens if you have one in place.

The Family Protection Pack from Heirs & Order™ includes your Family Discretionary Trust Deed, Letter of Wishes, and Nominee Declaration — the three foundational documents for protecting your family's assets from unnecessary IHT. From £197.

See also: family discretionary trust UK guide — the most effective legal tool for removing assets from your IHT estate — and how to write a will in the UK to ensure the right people inherit what remains. For families who want complete legal and IHT protection in one place, the Full Sovereignty Stack covers your trust, will, LPA, and business structure together.

Heirs & Order™ provides document preparation services for informational purposes only. Heirs & Order™ is not a law firm. This is not legal advice or tax advice. We recommend all documents are reviewed by a qualified solicitor and/or tax adviser before use.