Chargeable events

The moments tax falls due, and how the gain is worked out.

A bond is taxed only when a chargeable event happens. Knowing which events count, and how the gain is calculated, is most of what there is to understand about bond taxation.

What counts as a chargeable event

Full surrender. Cashing the bond in entirely.

Surrendering individual segments. Each segment is its own policy, so surrendering some of them is a full surrender of those policies.

A withdrawal exceeding the cumulative 5% allowance, which creates an excess event at the end of that policy year.

Death of the last life assured, which brings the policy to an end and creates a gain based on the surrender value immediately before death.

Maturity, where the policy has a fixed term.

Assignment for money or money's worth, meaning selling or transferring the bond in exchange for something.

What is not a chargeable event is worth knowing too. Assignment by way of gift is not chargeable — which includes transferring a bond between spouses or civil partners. That single feature is one of the most useful planning tools available with bonds, and it's covered below.

How the gain is worked out

On full surrender:

Surrender value, plus all withdrawals ever taken, less total premiums paid, less any gains already taxed on the policy.

That formula explains why the 5% allowance is deferral rather than exemption. Every previous withdrawal comes back into the sum.

On an excess event:

The amount withdrawn, less the unused cumulative 5% allowance.

No reference to the bond's actual performance at all. This is the calculation that produces gains on bonds that haven't grown.

On death of the last life assured:

Based on the surrender value immediately before death, using the same formula as a full surrender.

How the gain is taxed

As income, in the tax year the event falls. Not as a capital gain, so the annual exempt amount is irrelevant.

It's savings income for tax purposes, which means the personal savings allowance and, for those with low other income, the starting rate for savings can apply to it.

Onshore bonds carry a basic rate credit. The gain is treated as having borne 20% tax inside the fund. A basic rate taxpayer typically has nothing more to pay. A higher rate taxpayer pays the difference. The credit cannot be reclaimed, so a non-taxpayer gets no refund.

Offshore bonds carry no credit. The full gain is taxable at your marginal rate, though the personal savings allowance and starting rate can still shelter part of it.

The knock-on effect people forget

The gain counts as income for other purposes, and that's where the damage is often done.

The personal allowance taper. A gain pushing your total income above £100,000 starts withdrawing your personal allowance at £1 for every £2 over, which is an effective 60% rate on that slice. See The 60% tax trap.

The High Income Child Benefit Charge, if the gain pushes you over the threshold.

Personal savings allowance, which shrinks or disappears as the gain moves you into a higher band.

So a chargeable gain can cost you more than the tax on the gain itself. The Bond Encashment Calculator shows that knock-on separately, because it's the part people don't anticipate.

The chargeable event certificate

When an event occurs, the insurer issues a chargeable event certificate showing the gain and the number of relevant years. It goes to you and, above certain thresholds, to HMRC.

You report the gain on your Self Assessment return. If you don't normally file one, a chargeable event may require you to.

Keep every certificate. The calculation of a later gain depends on gains already taxed, and reconstructing decades of history without the paperwork is difficult.

The spouse transfer

Because a gift is not a chargeable event, a bond can be assigned to a spouse or civil partner with no tax consequence at the point of transfer.

The recipient then owns it, and any subsequent chargeable gain is taxed on them at their rate.

Where one spouse is a higher rate taxpayer and the other is not, transferring a bond before encashment can substantially reduce the tax. It has to be a genuine and outright transfer of ownership, not an arrangement on paper, and the transfer must happen before the chargeable event.

It's one of the cleanest planning moves available with bonds, and it's routinely missed.

This article is for general education only and isn't personal advice. Chargeable event calculations depend on the full history of the policy and on your other income.