Using Investment Bonds to Fund Private School Fees

Private school fees are a significant financial commitment for many families. In the UK, annual fees at independent secondary schools typically range from £15,000 to £45,000+ per year depending on school and location, with boarding schools at the upper end. Over a 7-year secondary school education, total fees can easily reach £100,000-£300,000. Add primary education and siblings, and the planning challenge becomes substantial.

Investment bonds — both onshore and offshore — have long been used as a vehicle for funding education costs, particularly for families where the higher-rate taxpayer paying the fees wants to defer or reduce the tax on investment returns used to meet those costs.

This is not a simple area. The rules around bonds, assignment, and "top-slicing" are genuinely complex. This guide sets out the key concepts; professional advice is essential before implementing.

The 5% Annual Withdrawal Allowance

The cornerstone of the investment bond's tax-deferred appeal is the 5% rule:

You can withdraw up to 5% of the original premium each year, cumulatively, without triggering an immediate income tax liability. This allowance accumulates: if you don't use it one year, it carries forward. After 20 years, you have used your full original premium in tax-deferred withdrawals.

Example: You invest £300,000 into an offshore bond to fund school fees starting in 5 years. The 5% annual allowance is £15,000/year. Over a 7-year school career (secondary only), you can withdraw up to £15,000 each year (£105,000 total) with no immediate income tax liability. The tax is deferred — not eliminated — and becomes due on full encashment or maturity. But deferral is valuable: money deferred today is money that can continue to compound inside the bond.

For school fees of £15,000-£25,000 per year, the 5% allowance can cover a meaningful portion or all of the fees in a tax-deferred manner. For higher fee levels, partial funding via the bond and direct payment for the balance is common.

Offshore vs Onshore Bonds

Offshore bonds are written in jurisdictions such as the Isle of Man, Ireland, or Luxembourg. The underlying funds roll up free of UK income tax inside the bond (they pay local tax, often at 0% in these jurisdictions). Tax is only due in the UK when withdrawals are made above the 5% allowance or when the bond is encashed. This tax deferral can be significant over long periods.

Onshore bonds are UK-issued. The bond funds pay corporation tax within the fund (at around 20%), so there is an element of tax paid along the way. When encashing, the investor receives a 20% tax credit that reduces their income tax liability — which means higher-rate taxpayers pay only the 20% "top-up" rather than the full 40%, and additional rate taxpayers pay only the 25% top-up.

For families planning to use bonds purely for school fees and likely to encash over a period when their income is relatively high, offshore bonds are often more tax-efficient due to the purer deferral. For those who may encash in lower-income periods, onshore bonds may be marginally simpler.

Assignment: Shifting the Tax Liability

One of the most effective strategies involves assigning the bond — or segments of it (bonds can be split into many "segments" for this purpose) — to a lower-rate taxpayer before encashment.

In the context of school fees, this typically means assigning a bond segment to an adult student child (aged 18+) who has little or no other income. When the assigned segment is encashed, the gain is assessed on the student, not the parent. If the student's income is below the personal allowance and basic rate band, the tax on the encashment gain can be significantly lower than it would have been in the parent's hands.

The student's tax position: A student with no earned income has a personal allowance of £12,570 (2026/27) and pays basic rate tax at 20% on income between £12,570 and £50,270. If the encashment gain after top-slicing falls within the basic rate band, the effective tax rate on the gain may be 0-20% versus 40-45% if the parent had encashed it.

The "top-slicing" calculation divides the total gain by the number of years the bond has been held, determining whether the gain is within the basic or higher rate band when spread over those years — even though the actual payment is made in a single year. This mechanism is designed to prevent a large deferred gain from pushing the recipient unnecessarily into a higher rate band in the year of encashment.

Assignment must be an outright gift — you cannot have conditions on it, and it must be a genuine legal transfer. Given that the student will then own the bond, this strategy requires trust in the family relationship and planning around what happens to the proceeds.

Comparison with Junior ISA

The Junior ISA (JISA) is the most accessible and straightforward wrapper for education savings:

• Up to £9,000/year can be invested.
• Growth and income are completely tax-free.
• The child cannot access the funds until age 18, at which point they own them outright.

The JISA is simpler, has no ongoing tax complexity, and is entirely transparent. For smaller regular savings towards education costs, it is often the right choice.

The investment bond is better suited to:

• Lump-sum investment (the 5% rule scales with the premium size, so larger single investments benefit more).
• Situations where the parent wants to retain some control over the timing of payments (JISAs are locked until 18 and then owned by the child; a bond can be managed by the parent and assigned strategically).
• Older families starting fees planning late — the bond can be invested now and distributions managed in the near term, whereas a JISA requires time to accumulate.

Long-Term Planning: Starting Early

The tax deferral advantage of an offshore bond is greatest when the money is invested well before it is needed. Starting a bond when a child is born and allowing 11-12 years to elapse before school fees start means:

• Compounding occurs free of annual income tax drag.
• The 5% allowance accumulates (though interest on unused allowance only rolls forward — it does not compound).
• The assignment option at age 18 becomes available if the bond is still held.

For parents with significant capital — perhaps from a business sale, an inheritance, or a bonus — placing a lump sum into an offshore bond early in a child's life is a structured and flexible approach to education funding.

Considerations Before Investing

Investment bonds are medium-to-long-term investment vehicles. The underlying funds carry market risk — the value of a bond can fall as well as rise. Unlike cash savings accounts, there is no capital guarantee unless a specific capital-protected product is chosen.

The 5% withdrawal allowance defers tax — it does not eliminate it. On full encashment, any cumulative gain above cumulative withdrawals (and above the premiums invested) is subject to income tax, subject to top-slicing. Careful management of the encashment timing and the recipient's income position is important.

Tax rules change. The 5% rule and top-slicing provisions have remained broadly stable for many years, but this cannot be guaranteed indefinitely.

How Global Investments Can Help

Education fee planning using investment bonds requires careful construction: the right jurisdiction, the right provider, the right segmentation, and the right assignment timing. Global Investments helps families model the after-tax cost of school fees under different structures, compare bond providers, and integrate education planning with broader wealth management. We can also coordinate with tax advisers on top-slicing calculations and ensure assignments are handled correctly. Speak to our advisers well before the fees are due — the earlier the planning starts, the greater the flexibility.