HMRC IHT Trust Rules: How to Protect Family Wealth

We explain, in plain English, how HMRC treats trusts for inheritance tax (IHT) purposes and what that means for your family home, savings and investments.

We set out the three main charge points: placing assets into a trust (the entry charge), ten-year anniversary charges, and what happens when assets leave or when someone dies.

Our aim is to help homeowners aged 45–75 make sensible, informed choices. We highlight what you can do to prepare and when to instruct a solicitor, accountant or STEP-qualified adviser.

We link to official guidance so you can check the forms and rules directly, for example the government page on trusts and inheritance tax, and to practical local advice such as inheritance tax planning in Hambrook.

Key Takeaways

• Transfers into a discretionary trust are chargeable lifetime transfers (CLTs) — but most family homes below £325,000 incur zero entry charge.
• Relevant property trusts (mainly discretionary trusts) face 10‑year periodic charges and exit charges, though the maximum periodic charge is only 6% and for many family trusts the actual charge is nil.
• Trustees must report and pay tax within six months of a chargeable event using the IHT100 suite of forms.
• Good record-keeping from day one — gathering valuations, transfer dates and receipts — can reduce future stress and professional fees.
• Professional advice is essential for property transfers, blended families and complex estates. As Mike Pugh says: “The law — like medicine — is broad. You wouldn’t want your GP doing surgery.”

What an IHT trust is and how it can protect family wealth

A trust is a legal arrangement — not a separate legal entity — where one person (the settlor) transfers assets to trustees to hold and manage for the benefit of named beneficiaries. Because a trust has no separate legal personality, the trustees are the legal owners of the trust property. The rules governing the arrangement are set out in a trust deed. England invented trust law over 800 years ago, and it remains one of the most powerful tools available for protecting family wealth.

Who owns what for tax purposes?

Legal ownership sits with the trustees — they appear on the title deeds and bank accounts. But tax treatment depends on the type of trust. In a settlor-interested trust (for example, where the settlor retains a benefit or keeps the power to revoke), HMRC treats the assets as still belonging to the settlor for IHT purposes. That is why irrevocable trusts with properly excluded settlor interests are the standard for genuine asset protection and IHT planning.

Transfers into discretionary trusts are chargeable lifetime transfers (CLTs), not potentially exempt transfers (PETs). A CLT attracts an immediate 20% entry charge on the value above the settlor’s available nil-rate band (£325,000). However, for most families transferring a single property or savings pot below that threshold, the entry charge is zero. The trust may then face periodic and exit charges during its life — but as we will show, these are often surprisingly modest.

Quick practical points

• Gifts directly to individuals are potentially exempt transfers (PETs) — they fall outside your estate if you survive seven years. But transfers into discretionary trusts are CLTs, not PETs, so the seven-year PET rule does not apply in the same way.
• Not all trust arrangements remove IHT risk. Revocable trusts and settlor-interested trusts provide no IHT benefit because HMRC treats the assets as still belonging to the settlor.
• Choosing reliable, capable trustees matters: they handle valuations, HMRC forms and payment deadlines throughout the trust’s life — which can last up to 125 years under the Perpetuities and Accumulations Act 2009.

For an explanation of how bare trusts work and their limitations, see our guide on bare trust inheritance tax.

Choosing the right trust type for your estate planning goal

Your planning aim should guide the trust type you pick, not the other way round. In England and Wales, trusts are classified first by when they take effect (lifetime trust vs will trust), then by how they operate (discretionary, bare, or interest in possession). The question of whether a trust is revocable or irrevocable is a feature within lifetime trusts, not the primary classification. Start by deciding whether you need ongoing income, protection for capital, flexibility for changing family circumstances, or a simple transfer of ownership on death.

Discretionary trusts for family flexibility and protection

A discretionary trust gives trustees absolute power to decide who gets what, when, and how much. No beneficiary has a fixed right to income or capital — and that is precisely the point. This flexibility means trust assets cannot be claimed by a beneficiary’s divorcing spouse (with a UK divorce rate of around 42%, this is a real concern), creditors, or local authority care fee assessors. It is the most commonly used trust type for family asset protection, representing roughly 98–99% of the trusts we set up.

Bear in mind: discretionary trusts fall under the relevant property regime and can face ten‑year periodic charges (maximum 6%) and exit charges (typically well under 1%). For most family homes valued below the nil-rate band of £325,000, these charges are often nil.

Bare trusts: simple but limited

A bare trust is the simplest type. The beneficiary has an absolute right to both capital and income, and can demand the assets at age 18 (the rule in Saunders v Vautier). The trustee is effectively a nominee with no discretion.

For IHT purposes, the asset is treated as belonging to the beneficiary — so it forms part of their estate on death, not the settlor’s. Bare trusts are not IHT-efficient and offer no protection against care fees, divorce or creditor claims because the beneficiary can collapse the trust at any time once they reach majority.

Interest in possession trusts and special categories

An interest in possession (IIP) trust gives a named person (the life tenant) the right to income from, or use of, the trust property — for example, the right to live in a home for life. When the life interest ends, the capital passes to the remainderman (often the children). This structure is commonly used in will trusts to prevent sideways disinheritance in blended families.

How the IIP trust is taxed depends on when it was created. Pre-March 2006 IIP trusts are generally treated as part of the life tenant’s estate. Post-March 2006 IIP trusts are generally treated as relevant property (like discretionary trusts), unless they qualify as an immediate post-death interest (IPDI) or a disabled person’s interest.

There are also special categories for disabled beneficiaries, bereaved minors and 18–25 trusts. These receive favourable IHT treatment and are designed to protect vulnerable beneficiaries.

• Key questions: Who needs income? Who needs protection? Who will manage capital? Is there a blended family?
• Lifetime vs will: Lifetime trusts can remove assets from your estate now and bypass probate delays — trustees can act immediately on the settlor’s death without waiting for a Grant of Probate. Will trusts take effect on death and form part of the estate administration process, so assets remain frozen until the Grant is issued.

Key HMRC concepts that determine whether IHT is due

Understanding HMRC’s labels matters. Each asset placed into a trust keeps its own identity as settled property. That classification affects when a charge is triggered, which regime applies, and what reliefs are available.

Settled property is HMRC’s term for assets held within a trust. Tracking what was transferred, when, and by whom is critical — it determines any immediate entry charge and feeds directly into later periodic and exit charge calculations.

Relevant property versus excluded property

Relevant property covers most UK-sited assets held in a discretionary trust: cash, shares, land, buy-to-let property and the family home. This is the part subject to the ten‑year periodic charge and exit charges. For most family trusts holding a single property below the nil-rate band, these charges work out at zero.

Excluded property includes certain overseas assets held on trust where the settlor was domiciled outside the UK when the trust was created, and specific government securities. Excluded property sits outside IHT as a matter of law, but it can still affect the effective rate used to calculate charges on the relevant property within the same trust. Domicile and residence rules are complex — take specialist advice before relying on any exclusion.

The nil-rate band and the seven-year look-back

The nil-rate band (NRB) is £325,000 per person. It has been frozen at this level since 6 April 2009 and is confirmed frozen until at least April 2031. With the average home in England now worth around £290,000, the NRB freeze is the single biggest reason ordinary homeowners are being caught by IHT — a threshold that has not kept pace with house price inflation for over 15 years.

When calculating an entry charge into a discretionary trust, HMRC looks back at all CLTs the settlor has made in the previous seven years to see how much NRB remains. If the total of prior CLTs plus the new transfer stays within £325,000, the entry charge is nil. A married couple each making separate transfers can use up to £650,000 of combined NRB across two trusts.

Need a quick refresher on the nil-rate band? See our guide on the nil-rate band for clear dates and thresholds.

How to transfer assets into trust without triggering unexpected IHT

Before you move any asset into a trust, run a simple checklist to see if a tax charge will follow.

A transfer into a discretionary trust is a chargeable lifetime transfer (CLT). This covers outright gifts of assets and sales at undervalue — essentially any transaction that reduces the settlor’s estate.

What to check first

Step 1: Add the value of the new transfer to any CLTs made in the last seven years. Step 2: Compare the cumulative total to the nil‑rate band (£325,000). If the total stays at or below £325,000, the entry charge is nil. For a married couple each creating their own trust, the combined available NRB can be up to £650,000.

When the lifetime rate applies and grossing up

If the cumulative CLTs exceed the available NRB, the excess is charged at the 20% lifetime rate. If the trustees pay the entry charge, the tax is simply 20% of the excess. If the settlor pays the tax personally, the payment itself is treated as an additional transfer of value — the figure is “grossed up” and the effective cost rises. In practice, it is almost always more efficient for trustees to pay the charge from trust funds.

Death within seven years and gifts with reservation of benefit

If the settlor dies within seven years of making the CLT, the charge can be recalculated at the full death rate of 40%, with credit given for the 20% already paid. Taper relief may reduce the tax (not the value of the gift) if death occurs between three and seven years after the transfer — but taper relief only helps where the CLT exceeds the NRB.

Gifts with reservation of benefit (GROB) are a common trap. If you transfer your home into a trust but continue living in it rent-free, HMRC treats the property as still part of your estate for IHT — regardless of how long ago you made the transfer. The seven-year clock does not help you if you have reserved a benefit. To avoid this, the settlor must either pay full market rent, genuinely cease to benefit, or use a properly structured trust — such as a Gifted Property Trust — that is designed to navigate these rules while removing value from the estate and starting the seven-year clock. Where the GROB rules do not apply but a benefit still exists, the Pre-Owned Assets Tax (POAT) may impose an annual income tax charge instead.

Practical actions trustees must take

• Record the exact transfer date and obtain a professional market valuation.
• Keep the trust deed, valuations, correspondence and all paperwork in a single trust file.
• Apply for an IHT payment reference (IHT122) promptly if a charge arises.
• Register the trust on the Trust Registration Service (TRS) within 90 days of creation — this is mandatory for all UK express trusts, including bare trusts, under the 5th Money Laundering Directive.

How the 10-year anniversary charge works for relevant property trusts

Every ten years, HMRC requires the trust fund to be revalued and a possible periodic charge calculated on the net value. This is often the part that worries people most — but the reality for most family trusts is far less alarming than the headlines suggest.

When trustees must revalue

Trustees must value all relevant property on the day before the ten-year anniversary. The taxable figure is the net value after allowable debts, liabilities and any available reliefs. The maximum periodic charge is 6% of the value above the available NRB — and for a family trust holding a single property below £325,000, the charge is often nil.

Reliefs and deductions to reduce the bill

Common reductions include allowable debts secured against trust property, and specialist reliefs such as Business Property Relief (BPR) and Agricultural Property Relief (APR). Note that from April 2026, BPR and APR will be capped at 100% for the first £1 million of combined business and agricultural property, with only 50% relief on the excess. These reliefs lower the chargeable value and therefore the periodic charge.

Information needed before you calculate

• The value and date of the original transfer into trust, plus any same‑day additions or related settlements.
• Records of all CLTs by the settlor in the seven years before the trust was created.
• Distributions (exits) from the fund in the last ten years and any prior anniversary charge calculations.
• Evidence of periods when an asset was not relevant property (for example, if a beneficiary held an interest in possession).

Note: If an asset was relevant property for fewer than 40 complete quarters (10 years), the charge is reduced proportionately. Also bear in mind that capital gains tax and income tax obligations can apply separately on disposals and income, so plan holistically.

What to diarise now: the anniversary date, a valuation window of several months beforehand, and time to instruct a professional valuer or surveyor well in advance of the deadline.

How exit charges apply when assets leave a trust

When assets leave a relevant property trust, a specific IHT charge may be due — and timing matters significantly.

What counts as an exit

Distributions, endings and absolute entitlement

An exit occurs when capital is distributed to beneficiaries, when the trust comes to an end, or when a beneficiary becomes absolutely entitled to an asset (for example, a bare trust arising within a discretionary structure).

Even a partial distribution can create a reportable event. The charge applies to the value of the property leaving the trust.

When no exit charge applies

There are safe windows. No exit charge normally applies to distributions made within the first three months of the trust being set up (known as the “quarter day” rule).

The same three-month window can apply immediately after a ten‑year anniversary. Excluded property is also outside the exit charge, though it can affect the effective rate applied to the relevant property.

How the “up to 6%” rate is worked out

The maximum exit rate is effectively 6% — but in practice, the actual charge is almost always much lower. Trustees calculate an effective rate from the most recent ten‑year periodic charge computation and then prorate it by the number of complete quarters since the last anniversary.

To put this in perspective: 10% of the maximum 6% periodic rate gives an exit charge of just 0.6% — less than 1% of the property leaving the trust. For many family trusts where the periodic charge itself was nil, the exit charge will also be zero.

Practical notes for trustees

• Exits in the first ten years use the original transfer values and the settlor’s seven-year CLT history; keep these records safe from the outset.
• After the first ten-year anniversary, the calculation uses the most recent periodic charge figures and a pro-rata rule based on complete quarters.
• Income distributed to beneficiaries may also trigger income tax consequences for the recipient, so check both IHT exit charges and income tax liability before making distributions.

Quick checklist at exit: record the exact date, market value of the asset leaving, beneficiary details, and gather all historical figures needed for the charge calculation (original transfer values, prior CLTs, last periodic charge computation).

What happens when someone dies and a trust is involved

Death often brings a short window to check whether trust assets are treated as part of the deceased’s estate for IHT purposes. The answer depends on the deceased’s role (settlor, trustee or beneficiary) and the type of trust. Here are the three situations you are most likely to encounter.

If the deceased was a beneficiary

If the asset sat in a bare trust, it is treated as part of the beneficiary’s estate on death. The executors must include the full value when calculating the IHT liability and applying for the Grant of Probate.

By contrast, a discretionary trust asset does not form part of any beneficiary’s estate, because no beneficiary has a fixed entitlement. This is one of the key protective advantages of discretionary trusts — and it is also the reason trust assets bypass probate entirely, allowing trustees to act immediately without waiting for a Grant.

For interest in possession arrangements, the position depends on when and how the interest was created. Pre-22 March 2006 interests, immediate post-death interests (IPDIs), and disabled person’s interests are generally treated as part of the life tenant’s estate. Other post-March 2006 IIP trusts are treated as relevant property — the trust assets are not included in the life tenant’s estate.

If the settlor transferred assets in the last seven years

CLTs made by the deceased within seven years of death are re-assessed. The lifetime charge (20%) can be topped up to the full death rate of 40%, with credit given for the 20% already paid. Taper relief may reduce the tax payable if death occurs between three and seven years after the transfer, but only where the CLT exceeded the NRB.

Trustees may face an additional IHT liability, and the personal representative must report those transfers on the estate IHT return (typically IHT400). Gathering transfer dates, valuations and proof of any tax already paid should be done promptly.

If the trust is created by a will and family home planning

When a will creates a trust, the personal representative must set it up correctly as part of the estate administration and pay any IHT due from the estate before transferring assets to the trustees. The trustees then manage the trust in accordance with the will’s terms.

The residence nil-rate band (RNRB) of £175,000 per person is only available where a qualifying residential property passes to direct descendants — children, grandchildren or step-children. It is not available where the home passes to nephews, nieces, siblings, friends or charities. The RNRB can apply through certain will trusts (such as a bare trust for children or an IPDI), but discretionary will trusts rarely qualify. Combined with the NRB, a married couple can potentially pass up to £1,000,000 IHT-free (£650,000 NRB + £350,000 RNRB), but only if the RNRB conditions are met. The RNRB also tapers by £1 for every £2 the estate exceeds £2,000,000. Like the NRB, it is frozen at £175,000 until at least April 2031.

Quick checklist: trust deed or will terms, current asset valuations, full transfer history for seven years, and beneficiary details. Where a family home or blended family is involved, timely professional advice is essential to avoid unexpected IHT bills, loss of the RNRB, and probate delays.

How to report HMRC IHT trust charges and meet deadlines

When a chargeable event occurs, timely and accurate reporting stops small mistakes becoming big bills. Trustees are responsible for identifying the correct event, filing the right form from the IHT100 suite, paying any tax by the deadline, and keeping proof of valuations and transfer dates. Missing deadlines can result in interest charges and HMRC compliance enquiries.

Which form to use and who reports

Quick guide:

Deadlines, calculations and records

Trustees must report and pay by the end of the sixth month after the chargeable event. Late payment attracts interest from the due date, and persistent late filing can trigger penalties.

You can leave calculation sections blank and ask HMRC to work out the charge, but filing early with your own figures speeds resolution and reduces the risk of estimated assessments. Instructing a solicitor or STEP-qualified trust adviser to prepare the computation is usually worthwhile — the cost of professional preparation is typically far less than an unexpected HMRC assessment.

Trustees must keep the trust deed, all valuations, bank statements, transfer dates and receipts in a single trust file. Apply for an IHT payment reference (IHT122) well before the deadline to avoid last-minute delays.

Other taxes and administration you still need to plan for

IHT is only one piece of the puzzle. Trustees must also consider income tax, capital gains tax (CGT) and trust registration obligations. Ignoring these can create unexpected bills and compliance problems.

Income tax on trust income and what it means for beneficiaries

Trust income is taxed at the trust rate: currently 45% for non-dividend income and 39.35% for dividend income. The first £1,000 of trust income is taxed at the basic rate. When income is distributed to beneficiaries, they receive a tax credit for tax already paid by the trustees, and may need to declare the distribution on their Self Assessment return. If the beneficiary is a basic-rate taxpayer, they can reclaim the excess tax. Trustees must file an SA900 trust tax return each year that the trust has income or gains to report.

Capital gains when trust assets are sold or transferred

When trustees sell or transfer trust assets, CGT can arise. Trustees currently pay 24% on residential property gains and 20% on other asset gains. The trust’s annual CGT exemption is half the individual level (currently £1,500).

Important reliefs exist: transferring a main residence into trust while it is still your home normally does not trigger CGT because principal private residence relief (PPR) applies at the point of transfer. Holdover relief is also available when assets are transferred into or out of certain trusts, deferring the CGT charge so there is no immediate tax bill. Correct recording of the acquisition value, transfer date and market values is essential for any future disposal.

Trust Registration Service: when a trust must be registered

All UK express trusts — including bare trusts — must register on the Trust Registration Service (TRS) within 90 days of creation. This requirement stems from the 5th Money Laundering Directive. The TRS register is not publicly accessible (unlike Companies House), so trust details remain private — an important advantage over other legal structures.

Will trusts generally have a two-year window after the death before registration becomes compulsory, provided no tax liability arises earlier. Trustees must keep TRS information up to date and report changes within 90 days.

Simple admin plan for trustees

• Maintain a single trust file with the trust deed, valuations, bank statements, minutes of trustee meetings and beneficiary details.
• Diarise all reporting dates: SA900 trust tax return deadline, IHT100 deadlines and the ten-year anniversary.
• Record acquisition values, sale proceeds, dates and professional valuations for any asset disposal.
• Confirm the trust is registered on the TRS and update information promptly when details change.

Conclusion

A clear plan and tidy records are often the difference between protecting family wealth and paying more tax than necessary. Trust outcomes depend on the type of trust and on three key charge events: entry, the ten‑year periodic charge, and any exit. Keep that framework central when you make decisions about inheritance tax planning.

We have shown the practical path: choose the right trust for your family’s circumstances, check entry charges against the nil‑rate band (£325,000) and seven‑year CLT history, then plan for ten‑year and exit charges where the trust holds relevant property. Record every asset, date and market value from the start — good records save time, stress and professional fees later.

Common pitfalls include gifts with reservation of benefit on the family home, assuming a revocable trust offers IHT savings (it does not — HMRC treats the assets as still belonging to the settlor), and relying on the residence nil-rate band when assets pass through a discretionary trust (which rarely qualifies). Trustees must report chargeable events and pay within six months, keeping paperwork ready for HMRC queries.

Trusts are not just for the rich — they’re for the smart. When you compare the one-off cost of setting up a trust (from £850 for straightforward arrangements) to the potential cost of care fees (currently £1,200–£1,500 per week), or a 40% IHT bill on everything above £325,000, professional trust planning is one of the most cost-effective forms of protection available to ordinary families. Not losing the family money provides the greatest peace of mind above all else.

Next step: list your assets and their approximate values, note any gifts or CLTs in the last seven years, and speak to a specialist UK trust and estates professional. Plan, don’t panic — and start early.