The Ten-Year Periodic Charge: The IHT Bill Property Trusts Forget About Between Generations

A discretionary trust set up to hold a rental portfolio outside a family's estate is usually planned around one event: the settlor's death, and the Inheritance Tax it avoids. What gets planned around far less often is that the trust itself faces its own Inheritance Tax bill along the way, on a schedule that has nothing to do with when anyone dies. Every ten years, and every time capital leaves the trust in between, a charge can fall due — and because it is easy to lose sight of a date a decade away, it is one of the most common Inheritance Tax bills that catches trustees by surprise.

The relevant property regime, in outline

Most discretionary trusts fall within what HMRC calls the relevant property regime. Property transferred into this kind of trust during the settlor's lifetime is a chargeable lifetime transfer, taxed at up to 20% on entry to the extent it exceeds the settlor's available nil rate band, rather than benefiting from the seven-year potentially exempt transfer treatment that applies to an outright gift. Once inside the trust, the property does not then sit untaxed until the settlor's death; instead it is taxed periodically, on the trust's own timetable, entirely independently of whether the settlor is alive, and independently of who the eventual beneficiaries turn out to be. This is the trade-off that comes with the flexibility a discretionary trust offers over a fixed gift, and it applies whether the trust holds a single buy-to-let or a substantial development portfolio.

The ten-year periodic charge

On each ten-year anniversary of the trust's creation, the value of its relevant property is tested against the nil rate band, currently £325,000 and frozen at that level under the current freeze. Value above the available band is taxed at an effective rate of up to 6% — itself a fraction of the 20% lifetime rate, reflecting that only a proportion of the trust's history is treated as chargeable at each anniversary. The actual rate depends on several things specific to the trust: the value of the relevant property at the anniversary, the nil rate band available after deducting the settlor's chargeable transfers in the seven years before the trust was created, and any distributions already made out of the trust since the last anniversary. Two trusts holding an identical portfolio can face different periodic charges purely because of what the settlor did, tax-wise, in the years before either trust existed.

In practical terms, a trust holding a rental portfolio worth £900,000 at its ten-year anniversary, with the full £325,000 nil rate band available and no other chargeable history, faces tax on roughly £575,000 of value at up to 6%, in the region of £34,500. A trust with a smaller portfolio, or one that has already distributed capital to beneficiaries and reduced its holding below the nil rate band, may face little or nothing at that same anniversary. The charge scales with success: portfolios that have grown fastest since the trust was set up carry the largest periodic bills, which is precisely when trustees are least likely to have kept cash aside for a tax charge rather than reinvested rental income back into the properties.

The exit charge: the same idea, pro-rated

Capital rarely leaves a discretionary trust in a neat ten-year cycle. A property is more commonly transferred out to a beneficiary, sold with the proceeds distributed, or otherwise appointed absolutely at whatever point suits the family, and each such event between anniversaries can trigger a proportionate exit charge. The calculation takes the effective rate that applied (or would have applied) at the last ten-year anniversary and scales it down according to the number of complete quarters that have passed since then, out of the forty quarters in a full ten-year period. Capital appointed out three years after an anniversary carries roughly 30% of the rate that a full periodic charge would apply; capital appointed out in the first quarter after the trust was created, before any periodic charge has yet occurred, uses a similar quarterly apportionment measured from the trust's creation date instead. The effect is that the tax cost of an appointment depends heavily on timing within the ten-year cycle, which is worth modelling before a distribution date is fixed rather than after.

Reporting: the deadline that arrives whether or not tax is due

Trustees generally need to submit an IHT100 return to HMRC within six months of a ten-year anniversary if the trust's relevant property value exceeds 80% of the available nil rate band at that point, even where the calculation ultimately produces no tax to pay. The same six-month window is when any tax that is due must be paid, running from the end of the month in which the anniversary falls. Missing this deadline exposes the trust to penalties and interest in the same way a missed 60-day CGT reporting deadline does on a property sale, and because the anniversary is a single fixed date that only comes around once a decade, it is far easier to overlook than an annual filing obligation that habit and routine tend to catch. Trustees of property-holding trusts should calendar the date at the point the trust is created, not wait for it to come into view.

How this interacts with the rest of the estate plan

A trust's periodic and exit charges sit alongside, not instead of, the wider planning that put the property into trust in the first place. The trust registration obligations covered in our guide to the Trust Registration Service apply from the moment the trust is created, well before the first periodic charge is anywhere near due, and the related property rules that can affect the valuation of jointly held property elsewhere in an estate can also feed into how a trust's own relevant property is valued at each anniversary. Families weighing a discretionary trust against other structures should also look at the family investment company as an alternative, since a company holding the same portfolio is taxed under entirely different rules and carries no equivalent of the ten-year charge, at the cost of the greater flexibility a discretionary trust offers over who ultimately benefits and when.

What this means for trustees now

None of this is a reason to avoid a discretionary trust where it is otherwise the right structure for a property portfolio; the periodic and exit charges are a known, budgetable cost, not an open-ended one, and at a maximum of 6% every ten years they are modest set against the Inheritance Tax a portfolio could otherwise face on death outside the trust. The mistake to avoid is treating the ten-year anniversary as someone else's problem for the next nine years and then scrambling to value the portfolio, calculate the nil rate band available, and find the cash to pay the charge in the final weeks of the reporting window. Building a periodic charge reserve into the trust's rental income planning, and reviewing the settlor's chargeable history well ahead of each anniversary, turns a charge that could otherwise force a property sale into one the trust has already planned for.

Common questions

What is the ten-year periodic charge on a discretionary trust holding property?

It is an Inheritance Tax charge levied every ten years on the value of property held in a discretionary trust above the available nil rate band, currently £325,000. The maximum rate is 6% of the excess value, though the actual rate depends on the trust's history and can be lower or nil.

What is a trust exit charge and when does it apply?

An exit charge, or proportionate charge, applies when property or capital leaves a discretionary trust between ten-year anniversaries, for example when a house is transferred out to a beneficiary. It is calculated as a proportion of the rate used at the last periodic charge, scaled down for each complete quarter since that anniversary that the trust has run without the charge applying.

Do trustees have to report to HMRC even if no tax is due at the ten-year anniversary?

Often yes. An IHT100 return is generally required within six months of the ten-year anniversary if the trust's relevant property value exceeds 80% of the available nil rate band, even where the calculation produces no tax to pay, and the tax itself, if any, is due at the same six-month point.

Does the ten-year charge apply to a property held in a family investment company instead of a trust?

No. The relevant property regime and its periodic and exit charges apply specifically to property settled into a discretionary trust. A family investment company holding the same property is taxed under entirely different rules, which is one of the reasons some property investors choose a company structure over a trust for multi-generational planning.

This article is general information, not personal tax advice, and tax rules change. Your own position depends on facts we cannot see from here — please take advice before acting on anything above.

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