Using Investment Bonds for School Fees Planning

Overview

Funding private education is one of the most significant financial commitments many HNW families undertake. UK independent school fees have increased faster than general inflation over many years; a full 13-year private education for a child starting school in 2026 could cost £250,000–£700,000 or more at today's prices, before accounting for further fee increases.

For internationally mobile families — often higher or additional rate taxpayers, sometimes with complex cross-border structures — the question is not just how to accumulate a sufficient fund but how to do so in a way that minimises the tax cost of withdrawals. The offshore investment bond, particularly when combined with the assignment mechanism, is one of the most consistently effective tools available.

This guide is for general information only. Tax rules change and individual circumstances vary. Nothing here constitutes personal tax advice. Always consult a qualified adviser before making financial decisions.

What Is an Offshore Investment Bond?

An offshore investment bond is a single-premium investment policy written by a life assurance company in a low-tax jurisdiction — most commonly Ireland, Luxembourg, or the Isle of Man. Despite the word "bond", it functions as an investment wrapper rather than a fixed-income instrument: the premium is invested in a range of underlying investment funds, and the policy grows in value over time.

The key tax characteristic of an offshore bond is gross roll-up: the investments inside the bond grow without annual UK income tax or CGT being charged. The policyholder is treated as a life assurance policyholder, not a direct investor. Tax is instead deferred until a "chargeable event" — typically a surrender, partial encashment, or the death of the life assured.

This deferral can be very powerful over long periods: a fund growing at 6% per year that is taxed annually on income produces a meaningfully smaller outcome after 15 years than one where tax is deferred and the full pre-tax return compounds inside the bond.

The Assignment Mechanism: How It Works

The most significant school-fees planning opportunity with offshore bonds is the assignment of the bond to a child (or other family member) at a time when they are a lower-rate taxpayer.

Here is how it works in outline:

1. The parent (or grandparent) takes out an offshore bond on their own life or lives, funding it with a lump sum — say £200,000 — when the child is young.

2. Over the following years, the bond grows gross of UK tax. The parent does not pay any annual tax on the investment growth.

3. When the child turns 18, the parent assigns the bond to the child. Assignment is not itself a chargeable event — it does not trigger a tax charge. The child becomes the new beneficial owner.

4. The child, who may have a full personal allowance of £12,570 and a basic-rate band extending to approximately £50,270 (as of 2026), then surrenders the bond in their own hands. The chargeable event gain is assessed on the child, not the parent.

5. If the gain falls within the child's personal allowance and basic-rate band, they may pay little or no tax on the proceeds — even though a parent who is a 45% taxpayer would have paid 45% income tax on the same gain.

The saving can be substantial. On a £150,000 chargeable event gain, a 45% taxpayer saves roughly £37,500 in tax compared with a 20% taxpayer (the difference between 45% and 20% is 25%, applied to £150,000).

Top-Slicing Relief

Even where the chargeable event gain takes the recipient's total income above the basic-rate threshold for that year, top-slicing relief may reduce the effective rate of tax. Top-slicing spreads the gain notionally across the number of complete years the bond has been in force, testing the resulting "slice" against the policyholder's marginal rate for that year. If the slice falls within the basic-rate band, the overall tax on the full gain is limited to 20%.

Top-slicing relief is a technical calculation and the rules have been refined following case law in recent years. It is most beneficial when the bond has been held for many years and the gain is large.

Timing: When to Assign and When to Surrender

The optimal timing of assignment and surrender depends on the child's income and circumstances:

• At 18: Many parents assign the bond at age 18, particularly if the child is about to start a university course (and therefore has minimal income). Surrender during the university years, when the child has little or no earned income, is typically the most tax-efficient time.

• Spread over multiple years: If the bond is large, it may be more efficient to make partial surrenders over several years — using the child's allowance and basic-rate band each year — rather than a single large surrender in one year that pushes the gain into higher-rate territory.

• Phased assignments: Where there are multiple children, different tranches of the bond can be assigned to different children in different tax years, spreading the tax cost.

Bare Trusts for Children: An Alternative

A bare trust invests directly in the child's name from the outset. The child is the beneficial owner; the parent or grandparent may be the legal owner (trustee) until the child reaches adulthood.

Within a bare trust:

• Income is taxed at the child's marginal rate (but note the parental settlement provisions: if a parent provides the funds and the child is under 18 and unmarried, income in excess of £100 per year is taxed on the parent, not the child — an important limitation).
• Capital gains use the child's CGT annual exempt amount (£3,000 as of 2026).

A bare trust is simpler than an offshore bond and involves no ongoing insurance charges. However, it does not benefit from gross roll-up, and the settlement provisions limit its tax efficiency for parent-funded arrangements while the child is under 18.

Junior ISAs (£9,000 per year per child, as of 2026) are another option — investments grow free of tax, and the child gains control at 18. But the contribution limit restricts their use as a primary vehicle for large school fees funds.

Discretionary Trusts: Greater Flexibility, Greater Complexity

A discretionary trust settled by a parent or grandparent can hold an offshore bond, shares, or other investments. The trustees have discretion to distribute capital and income to beneficiaries as appropriate.

Discretionary trusts are more flexible than bare trusts (the trustee can exercise discretion in favour of whichever beneficiary is in the best tax position at the time of distribution) but involve more complexity and cost:

• Initial and ongoing trust registration with HMRC.
• Trustee reporting obligations.
• UK trust taxation charges (periodic and exit charges apply to most discretionary trusts where the value exceeds the nil rate band — £325,000 as of 2026).
• The chargeable event gain on an offshore bond held within a trust is taxed differently from a personally held bond.

For very large funds or complex family circumstances, a discretionary trust with an offshore bond inside it may still be appropriate — but the costs and complexity need to be weighed against the benefits.

How International Families Fund UK Boarding School Fees

For internationally mobile families based outside the UK — in the UAE, Singapore, or elsewhere — the need is often to fund UK boarding school fees for children who spend term time in the UK while the parents remain abroad.

Common approaches include:

• Offshore bond assigned to the child at 18: As described above.
• Direct investment account in a low-tax jurisdiction: Regular contributions from employment income in a zero-tax or low-tax country, invested in a broad global portfolio, liquidated as fees fall due.
• Property: Some families buy a UK property to house a child in sixth form or university; rental income from the property during the school years can contribute to fees, and the property provides a UK base. Capital gains tax on disposal needs to be managed carefully.
• Grandparent funding: Grandparents in the UK sometimes fund school fees directly — a gift from grandparent to grandchild is a potentially exempt transfer for IHT purposes.

HMRC's Position

HMRC has historically been comfortable with the legitimate use of assignment and top-slicing relief for offshore bonds. The chargeable event regime is a statutory framework; assignment is explicitly provided for within it.

HMRC's primary concern in this area is the settlement provisions — ensuring that a parent does not retain a benefit from funds nominally placed in a child's name. Where the assignment is genuine, the child is a legal adult, and the parent has no retained interest, the settlement provisions generally do not apply to chargeable event gains. But the rules are fact-specific and advice should be taken before proceeding.

How Global Investments Can Help

Global Investments has extensive experience structuring offshore investment bonds for internationally mobile HNW clients, including for the purpose of school fees planning. We work with clients to design the right structure from the outset — considering the size of the fund, the number of children, the anticipated timeline, and the family's tax position — to ensure that the bond is as tax-efficient as possible at the point of surrender.

We can also help you coordinate school fees planning with your wider estate plan, ensuring that gifts and trust structures are consistent and do not create unintended tax or legal consequences. Contact us to arrange an initial conversation.