Offshore bond tax in the UK: one bill at the end instead of one every year
| 2026/27 rates held | Enacted from 2027/28 | |
|---|---|---|
| Inside the policy, after tax on the £27.2m gain | £19.9m | £19.4m |
| Held directly, after all tax | £19.5m | £19.2m |
| Policy ahead by | £458,000 | £174,000 |
UK law for the tax year 2026/27, for a UK-resident individual who owns the policy personally. Rates that start later are labelled with their start date. Projections that run past 5 April 2027 are shown twice: once with 2026/27 rates held for every year, and once with the rates already enacted from 2027/28 (Finance Act 2026). The 2026/27 figures are correct for this year; holding them for 30 years is the simplification.
Thirty tax bills, or one
Interest is taxed at 20, 40 or 45%. Dividends above the £500 allowance are taxed at 10.75, 35.75 or 39.35% from 6 April 2026. Every gain the manager realises above £3,000 a year is taxed at 18 or 24%. The tax leaves the portfolio each year, and only what is left compounds.
Income and gains inside the policy are not taxed on you each year. They are reinvested gross. Switching funds inside the policy is not a chargeable event. Tax arises only at a chargeable event: a full surrender, a withdrawal above the 5% allowance, an assignment for value, maturity, or the death that ends the policy.
The gain is then income, not a capital gain: taxed at 20, 40 or 45% (47% on savings income from 6 April 2027), with no basic-rate credit because the insurer is outside the UK. Top-slicing relief can soften it. And the whole deferral depends on the policy holding only permitted investments.
Six moments that decide whether the policy pays
A mixed portfolio, cashed in after 30 years at 45%
Year one alone costs £101,280 in income tax and CGT. Over 30 years about £7.4m of tax leaves the portfolio, and CGT on what is still unrealised takes £128,457 at the end. You keep about £19.5m.
The policy grows untaxed to about £32.2m. Income tax at 45% on the £27.2m gain is about £12.2m, leaving about £19.9m: ahead by about £458,000. At the rates already enacted from 2027/28 the gain is taxed at 47%, the direct side pays 47% on its interest too, and the margin narrows to about £174,000 (£19.4m against £19.2m). Thin either way, and it exists only because the period is long.
The same portfolio, with the gain taxed at 40% on average
Nothing changes: about £19.5m, or about £19.2m at the enacted rates, because the tax was paid on the way.
Tax on the gain falls to about £10.9m and you keep about £21.3m, about £1.8m ahead, or about £2.1m at the enacted rates because the direct side then pays 47% on its interest. An average of 40% is harder to reach once the bands are 42 and 47%: at a 42% average the lead at enacted rates is about £1.5m. At this size top-slicing alone will not get you there (the slice is about £905,000 a year). A lower average rate comes from spreading the gain: segments cashed in over several years, or gifted to adult family members who pay less.
You leave the UK before cashing in
The income tax and CGT paid during your UK years, about £7.4m here, stays paid.
A gain that arises while you are not UK resident is outside UK income tax, unless you come back within five years under the temporary non-residence rules (IPTM3734). Your new country may tax it. Plan the timing carefully and the deferred UK tax may never fall due.
A growth portfolio you rarely trade
With 1% dividend yield, 6% growth and only 5% of gains realised each year, most of the return is unrealised gain taxed at 24% only when you sell. You keep about £26.1m after selling everything in year 30.
The policy turns that capital growth into income taxed at 45%. You keep about £19.9m: behind by about £6.2m, or about £6.7m with the gain at the enacted 47%. The direct side does not move, because dividend and CGT rates are unchanged in 2027/28. A buy and hold equity investor does better without it.
You die still holding it
There is no CGT on death. Your executors take the portfolio at its value on the date of death (HS282), so in the growth portfolio above about £29.7m passes into the estate with its unrealised gains never taxed.
If the death ends the policy it is a chargeable event, and the gain on the surrender value immediately before death is income of the deceased. On the same growth assumptions you are about £9.7m behind, or about £10.3m at the enacted 47%. Inheritance tax applies to both and is left out here.
You need the money after 20 years
About £12.4m after all tax, or about £12.3m at the enacted rates.
About £11.8m after 45% on the gain: behind by about £620,000, or about £758,000 at the enacted rates. With 2026/27 rates held the policy only overtakes after about 28 years at a 45% exit rate, or about 21 years at 40%; at the enacted rates, after about 30 years at 47%, or about 22 years at 42%.
Onshore or offshore: the same chapter, a different fund
Your numbers: the same portfolio held two ways
| 2026/27 rates held | Enacted from 2027/28 | |
| Held directly | £19,475,776 | £19,217,055 |
| Inside the policy | £19,934,042 | £19,390,986 |
| In favour of the policy | +£458,266 | +£173,931 |
| Policy value before tax on the gain | £32,152,803 |
| Chargeable event gain | £27,152,803 |
| Income tax on the gain | £12,218,761 |
| Difference at the end, in favour of the policy | +£458,266 |
| Tax paid in year one if held directly | £101,280 |
| Income tax and CGT paid along the way if held directly | £7,390,157 |
| CGT at the end if held directly | £128,457 |
| Gain divided by years (the top-slicing slice) | £905,093 a year |
The formula
Held directly, each year:
income = value x income yield; income tax = income x your income rate
(enacted column: the 2026/27 rate in year one, the 2027/28 rate from year two)
value = value + income - income tax + value x growth
realised gain = unrealised gain x share realised; CGT = (realised gain - £3,000) x CGT rate
value = value - CGT (the base cost rises by the realised gain and the reinvested income)
At the end, if you sell: CGT = (unrealised gain - £3,000) x CGT rate. On death: no CGT.
Inside the policy:
policy value = capital x (1 + income yield + growth - policy charge) ^ years
gain = policy value - capital
tax = gain x exit rate (or your own figure after top-slicing relief)
(enacted column: the 2027/28 rate if you cash in after year one)
after tax = policy value - taxWhat the deferral is worth in your case
How an offshore bond is taxed: ITTOIA 2005 Part 4 Chapter 9
Why there is no 20% credit
What you pay when you cash in
How the same portfolio is taxed when you hold it directly
| Type of return | Basic rate | Higher rate | Additional rate | Tax-free amount |
|---|---|---|---|---|
| Interest | 20% | 40% | 45% | Personal savings allowance £1,000, £500 or nil |
| Dividends | 10.75% | 35.75% | 39.35% | £500 dividend allowance |
| Capital gains | 18% | 24% | 24% | £3,000 annual exempt amount |
| Offshore bond gain | 20% | 40% | 45% | Personal savings allowance; top-slicing relief; no CGT allowance |
The condition behind all of it
Choosing your own investments
Trustees as policyholders
Arriving in the UK
What the policy does not do
Offshore bond tax questions
Is an offshore bond tax-free in the UK?
No. Income and gains inside the policy are not taxed on you each year, but when a chargeable event happens (a full surrender, a withdrawal above the 5% allowance, an assignment for value, maturity or the death that ends the policy) the gain is taxed as savings income at 20, 40 or 45% in 2026/27, and at 22, 42 or 47% from 6 April 2027. The advantage is deferral and control of timing, not exemption.
How is the gain taxed when I cash in?
The chargeable event gain is savings income under ITTOIA 2005 Part 4 Chapter 9 and ITA 2007 s.18(4). It is added to your other income for the tax year and taxed at your marginal rate, with no basic-rate credit because the insurer is outside the UK. Top-slicing relief may reduce the tax if the gain divided by the years the policy has run would fall partly into a lower band. The insurer sends you a chargeable event certificate and you enter the gain on the SA106 foreign pages. To run your own figures through the same method, use the offshore bond encashment calculator.
Why is there no 20% tax credit on an offshore bond when a UK bond has one?
A UK insurer pays tax on its policyholder fund, so a gain on a UK policy is treated as having borne basic-rate tax, which cannot be repaid. An offshore insurer is outside that system and its fund grows without UK tax, so HMRC gives no credit on the gain (HS321; IPTM3720). An additional rate taxpayer pays 45% on an offshore gain against a further 25% on a UK bond gain. From 6 April 2027 the UK-policy credit follows the savings basic rate of 22%.
Are the 5% withdrawals tax-free?
Not in the end. Each year you may withdraw up to 5% of each premium without an immediate charge, cumulatively up to 100% over 20 years (ITTOIA s.507). Those withdrawals are tax-deferred: they are added back when the final gain is calculated. Taking more than the cumulative allowance creates an immediate gain, which can be large relative to the money taken out.
Does top-slicing relief bring the rate down?
Sometimes. The gain is divided by the number of complete years the policy has run, and the relief asks whether that slice, added to your other income, would be taxed at a lower rate. It helps most when your other income is modest in the year you cash in and the slice is small. On a large policy the slice itself can exceed £125,140, so the relief does little. It is not available to trustees, personal representatives or companies.
Does capital gains tax apply to an offshore bond?
No. A chargeable event gain is charged to income tax, not CGT. The 18% and 24% CGT rates and the £3,000 annual exempt amount do not apply to it. That cuts both ways: growth that would have been a capital gain taxed at 24% held directly becomes income taxed at up to 45% inside the policy.
I am moving to the UK under the new FIG regime. Does it cover my bond?
It does not. The four-year foreign income and gains regime for new residents lists the types of qualifying foreign income, and chargeable event gains on life policies are not among them (RFIG45100). The relief that does apply is time apportionment under ITTOIA s.528, which reduces the gain by the share of days in the ownership period when you were not UK resident.
What happens to an offshore bond when I die?
If your death ends the bond, it is a chargeable event. The gain is worked out on the surrender value immediately before death, so any extra life cover is excluded, and it is taxed as your income in the year you die. If the bond pays out only on the last death and another life assured is still alive, or it is a capital redemption bond with no life assured, the bond carries on and passes to whoever inherits it, with no income tax charge at that point. A directly held portfolio is different: there is no CGT on death and the assets pass at their market value on the date of death (HS282). Both are part of your estate for inheritance tax unless held in a suitable trust.
Is an offshore bond better than an ISA or a general investment account?
They do different jobs. An ISA usually comes first: growth and withdrawals are free of UK tax, though only £20,000 can go in each tax year. A general investment account is taxed as you go, in 2026/27 at up to 45% on interest, 39.35% on dividends and 24% on gains when you sell. An offshore bond defers all of that and then taxes the whole gain as savings income, at up to 45%. From 6 April 2027 savings rates rise by two points, to 47% at the top, for interest and bond gains alike. The bond tends to come out ahead when the money stays invested for many years and your rate is lower when it comes out, in retirement or after a lasting move abroad. For a short holding, or a portfolio of growth shares you rarely sell, the account can cost less.
PPLI.com is not authorised by the Financial Conduct Authority and does not give personal advice. This is general information about UK law, not an invitation or inducement to enter into any insurance or investment contract. Policies issued by insurers outside the UK are not protected by the Financial Services Compensation Scheme.
Sources and authorities
- ITTOIA 2005 s.465: who is liable for a chargeable event gain.
- ITTOIA 2005 s.484: the list of chargeable events.
- ITTOIA 2005 s.507: the 5% allowance on part surrenders.
- ITTOIA 2005 s.528: time apportionment for periods of non-residence.
- ITTOIA 2005 s.535, IPTM3820 and IPTM3830: top-slicing relief.
- ITA 2007 s.18(4): chargeable event gains are savings income.
- IPTM3720, IPTM3810 and HS321 (2026): no basic-rate credit on foreign policies; SA106 reporting.
- IPTM3734: gains arising while non-UK resident; temporary non-residence.
- ITTOIA 2005 s.516 and IPTM3650: personal portfolio bonds and the 15% deemed gain.
- gov.uk: income tax rates 2026/27; personal savings allowance; Scottish income tax.
- gov.uk: changes to tax rates for property, savings and dividend income (dividends from 6 April 2026; savings from 6 April 2027); Finance Act 2026.
- gov.uk: Capital Gains Tax rates and allowances.
- HS282 (2026): no CGT charge on death; assets acquired at market value on the date of death.
- RFIG45100: qualifying foreign income under the FIG regime.
- gov.uk: trusts and income tax; FSCS: what we cover.
UK research on offshore bond tax
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