What a discretionary trust is
In a standard gift by Will, the testator specifies exactly who receives what: "I leave my estate equally to my three children." The outcome is fixed. A discretionary trust works differently. Rather than directing a specific outcome, the testator creates a class of potential beneficiaries and appoints trustees with the authority - and the obligation - to decide how assets are distributed among them.
The trustees have genuine discretion. They can distribute to one beneficiary and not another, in whatever proportions they judge appropriate, at whatever time they consider right. The testator can guide this discretion through a letter of wishes - an informal document expressing their preferences - but the trustees are not legally bound by it. Their job is to exercise independent judgment in the best interests of the class of beneficiaries as a whole.
A discretionary trust is not a way of avoiding decisions - it is a way of delegating them to people you trust to make better decisions in future circumstances than you can prescribe today. That delegation only works if the trustees are genuinely well-chosen.
Why a discretionary trust is used
Flexibility for unknown future circumstances
A Will fixes the outcome at the date of death. A discretionary trust allows trustees to respond to circumstances that were unknown or unknowable when the Will was made. A beneficiary who was financially stable at the date of death may have serious financial difficulties two years later. A beneficiary who was struggling may have flourished. Trustees with discretion can respond to these changed circumstances; a fixed gift cannot.
Protecting vulnerable beneficiaries
Where a beneficiary lacks capacity, has addiction problems, is in a financially abusive relationship, or is otherwise vulnerable, an outright gift may cause more harm than good. A discretionary trust allows trustees to provide for the beneficiary's needs - paying bills directly, funding care, making regular modest payments - without placing a large sum in the beneficiary's hands all at once.
IHT planning
A discretionary trust can, in some circumstances, give beneficiaries flexibility to vary the inheritance after death in a tax-efficient way. A deed of variation - which allows beneficiaries to redirect an inheritance within two years of death - can work well alongside a discretionary trust structure. Trustees can also, in appropriate cases, make appointments to charities or skip a generation, potentially saving IHT that would otherwise be charged on the next estate down.
Asset protection
Assets held in a discretionary trust are not owned outright by the beneficiaries. A beneficiary who later faces divorce, bankruptcy, or significant creditor claims does not have a defined share of a trust that can be claimed against them. The trustees retain control - and can simply decline to make distributions to a beneficiary whose funds would be at risk. This protection is not absolute, but it is real and can be significant.
The trustees: choosing them wisely
The quality of a discretionary trust depends entirely on the quality of its trustees. Unlike a fixed gift, where the testator's wishes are written down and the executor simply carries them out, a discretionary trust requires trustees to exercise genuine judgment - for potentially many years after the testator's death.
Good trustees for a discretionary trust need to be capable of making fair decisions under family pressure, communicating clearly with beneficiaries, keeping proper records, meeting their ongoing legal and tax obligations, and acting impartially when the interests of different beneficiaries conflict. These are demanding requirements. A trustee who is simply the most trusted family member, without the temperament or administrative ability for the role, may struggle.
Many families appoint a professional trustee - a solicitor or trust company - alongside a family member, providing both independence and emotional understanding of the family's circumstances. This dual structure adds cost but significantly reduces the risk of the trust becoming unworkable through trustee conflict or inadequacy.
When a discretionary trust is not appropriate
- Clear beneficiaries and clear intentions. If you know exactly who you want to benefit and in what proportions, a fixed gift in a straightforward Will is simpler, cheaper to administer, and produces the same outcome. Adding discretionary trust machinery where none is needed creates unnecessary complexity and cost.
- Modest estates. The ongoing administration of a discretionary trust - tax returns, trustee meetings, potential professional fees - is a fixed overhead. For smaller estates, those costs may consume a disproportionate share of the benefit the trust was intended to provide.
- The residence nil-rate band is at stake. Property passing into a discretionary trust does not automatically qualify for the residence nil-rate band. For estates where the RNRB is available and valuable - potentially £175,000 per person - using a discretionary trust for the family home may forfeit that relief entirely, at a tax cost of up to £70,000. This is a common and expensive mistake.
- Poorly chosen trustees. A discretionary trust with the wrong trustees is worse than no trust at all. If you cannot identify people with the right qualities, the addition of a trust structure adds cost and conflict without providing the flexibility it was designed for.
The nil-rate band discretionary trust: now largely unnecessary
Until 2007, a common estate planning technique was to place assets up to the nil-rate band into a discretionary trust on the first spouse's death, preserving that nil-rate band and preventing it from being absorbed into the surviving spouse's estate. This was a legitimate and widely used strategy.
From October 2007, the rules changed. The unused nil-rate band from the first spouse to die can now be transferred to the survivor automatically, without any trust structure. A surviving spouse can claim two nil-rate bands - potentially £650,000 - without any planning beyond making a claim on the second death.
Historically, discretionary trusts were often used for nil-rate band planning between spouses. Since the transferable nil-rate band was introduced, they are less commonly needed for that purpose alone, but they may still be useful where there are asset protection, blended family, vulnerable beneficiary or tax planning reasons.
Ongoing tax obligations
A discretionary trust is not a one-time arrangement. It carries ongoing tax obligations that trustees must manage carefully.
- Ten-year anniversary charge. Every ten years, the trust is subject to a periodic charge of up to 6% of the trust's value above the nil-rate band. The calculation is complex, but the charge is real and must be budgeted for.
- Exit charges. When assets leave the trust - whether distributed to a beneficiary or appointed out to another arrangement - a proportionate exit charge may apply, calculated by reference to the most recent ten-year charge.
- Trust Registration Service. Most discretionary trusts must be registered with HMRC's Trust Registration Service within 90 days of creation. Ongoing annual declarations of beneficial ownership are also required. Failure to register or maintain registration can result in penalties.
- Income tax and CGT. Trustees pay income tax at the trust rate (currently 45% on income above a small basic rate band) and are subject to capital gains tax on disposals, with a reduced annual exempt amount. These rates are higher than those paid by individual beneficiaries, which affects the tax efficiency of retaining income within the trust.
None of these obligations makes a discretionary trust the wrong choice when it is genuinely needed. But they do mean that the decision to use one should be made with full awareness of what ongoing administration involves - and with trustees who are committed to carrying it out properly.
The information in our guides is provided for general information only and is not a substitute for advice based on your individual circumstances.
Wills, trusts, inheritance tax, Lasting Powers of Attorney and estate planning can be complex, and the right approach will depend on your family, finances, assets and wishes. Laws, tax rules, allowances and guidance can also change over time.
You should not act, or decide not to act, solely on the basis of the information in these guides. Where appropriate, you should obtain personalised legal, financial or tax advice before making any decisions.
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