How do you leave money to a disabled child without affecting their benefits?
An outright legacy to a disabled beneficiary becomes their capital, and capital ends means-tested benefits above the relevant limit. A trust holds the money for their benefit without it belonging to them, which preserves the entitlement — and a disabled person's trust also carries preferential tax treatment.
- The problem: an outright legacy is the beneficiary's capital and is assessed.
- The solution: a discretionary or disabled person's trust, where the money is not theirs.
- The tax: a disabled person's trust can be taxed more favourably than an ordinary discretionary one.
- The coordination: grandparents and others need to leave money the same way, or the plan fails.
01 Why an outright legacy causes harm
Means-tested benefits assess capital. A legacy of £30,000 left directly to a disabled adult ends Universal Credit entirely, reduces or ends other support, and can affect the local authority contribution to care. The money is then spent on what the benefits were paying for.
The intention is always good and the mechanism is indifferent to it. A parent leaving a share of an estate to each child, with one child disabled, has created exactly this outcome without anyone noticing.
The same applies to a gift during life, and to a payment from a life policy that names the beneficiary directly.
Shows: how a direct legacy is treated as capital against the means-tested capital limit. Ignores: the benefit rates, tariff income rules, and the beneficiary's other assets.
On the defaults above, the worked example shows £14,000. The legacy exceeds the capital limit, so entitlement ends until the money is spent down — held in trust, none of it would be assessed at all.
Source: Universal Credit
02 How a trust solves it
In a discretionary trust the beneficiary has no entitlement to anything — trustees decide what to pay and when — so nothing is their capital and nothing is assessed. Payments made for things benefits do not cover, such as holidays, equipment or a car, can be made without affecting entitlement.
A disabled person's trust is a specific category with preferential tax treatment: it can escape the ten-year and exit charges of the relevant property regime and can be taxed more favourably on income and gains, where the beneficiary meets the statutory disability conditions.
Which structure is right depends on the beneficiary's circumstances and on the assets involved, and this is one of the areas where specialist advice is genuinely necessary rather than optional.
Source: Trusts and taxes
03 Coordinating the family
The plan fails if anyone leaves money directly. Grandparents, aunts, godparents and siblings all have to know to leave their legacies to the trust rather than to the individual, and that conversation is the part families avoid.
It is worth writing down: a short note explaining the trust, its name, and how to leave money to it, given to everyone who might make a will mentioning the beneficiary. A solicitor drafting an unrelated will has no way of knowing.
The same applies to a life policy nomination and to a pension expression of wish, both of which can name the trust rather than the individual — and writing the policy in trust handles that directly.
The mistake here is made with the best intentions: parents divide an estate equally between their children, and the share left to the disabled one ends the benefits that were supporting them. Money held in a discretionary or disabled person's trust is not theirs, so nothing is assessed, and the trustees can pay for the things benefits never cover. The step families skip is telling everyone else — grandparents, aunts, siblings — to leave their money to the trust too. One direct legacy from a well-meaning relative undoes the entire arrangement.
FAQ
Why not leave money directly?
Because it becomes the beneficiary's capital, and capital above the relevant limit ends means-tested benefits. The money is then spent on the things the benefits were paying for, which leaves the beneficiary no better off.
What is a disabled person's trust?
A specific category of trust for a beneficiary meeting statutory disability conditions, which can escape the ten-year and exit charges of the relevant property regime and be taxed more favourably on income and gains than an ordinary discretionary trust.
What else has to change?
Every other route by which money could reach the beneficiary directly: other family members' wills, life policy nominations and pension expressions of wish should all name the trust. A single direct legacy undoes the arrangement.
Sources
Regulator references
- Universal Credit · GOV.UK · 2025The capital limits and taper that interact with pension savings.Last verified: 2026-09-07
- Trusts and taxes · GOV.UK · 2025The charges a trust attracts, which decide whether it is worth using.Last verified: 2026-09-07
- Disability Living Allowance for children · GOV.UK · 2025The benefit a disabled child receives, and the trust planning that has to protect it.Last verified: 2026-09-07
Calculator unit tests · the assertions this page's worked example is checked against, and their last result
Changelog
- 2026-09-07 — initial publish (new format)
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Jordan Reeves
Founder of Talk Through Wealth. A software engineer for over a decade before turning to retirement planning, Jordan built the projection engine after watching family members get fragmented, country-by-country advice that never reconciled. He writes about retirement the way the engine computes it: month-by-month, lifetime-long, and skeptical of any rule of thumb that hasn't been run through the math.