Reporting a chargeable event gain to HMRC

When a UK investment bond produces a chargeable event gain, the insurer issues a chargeable event certificate; the individual liable for the gain reports it to HMRC. Existing Self Assessment filers include it on their return. Someone outside Self Assessment may instead notify HMRC directly where the combined income is £10,000 or less, as explained below. Keep the gain, complete years and any tax treated as paid available.

Who reports, and where

The insurer's duty is to certify the gain (ICTA 1988 s.552) and, above a size threshold, to notify HMRC. It does not pay the tax. The person liable reports the gain: usually the individual who beneficially owns the bond; where the bond is held on a non-charitable, non-bare trust, normally the settlor who created it (ITTOIA 2005 s.465(3)). UK trustees can instead be liable where the settlor died in an earlier tax year or is non-UK resident, or no one else is chargeable (s.467; IPTM3230). A gain on an event after a UK-resident settlor's death but in the same tax year is taxed on the deceased settlor (IPTM3240). UK trustees holding policy rights on charitable trusts are liable under the separate rule in s.467(2), including where the settlor is alive and UK resident (IPTM3230). Personal representatives are liable only in the narrow s.466 case. For an individual, a UK-policy gain goes in Other UK income, using SA101 on paper (HS320). A foreign-policy gain goes in Foreign, under Other overseas income and gains, using SA106 on paper (HS321). Use the certificate and the instructions for the relevant tax year; the UK and foreign pages are different.

If already within Self Assessment, report the gain on the return. Otherwise, HS320 and HS321 say to register where the gain plus other savings and investment income exceeds £10,000. At £10,000 or below, notify HMRC directly as the helpsheets describe. Someone who needs to register must tell HMRC by 5 October after the end of the tax year (TMA 1970 s.7), and file online by 31 January (s.8). The statutory duty to notify does not arise where the only relevant income is a gain on which basic-rate tax is treated as paid and the person pays no tax above the basic rate (TMA 1970 s.7(6)); HMRC's helpsheets still ask for such a gain to be reported, so follow HS320/HS321.

The current instructions are in HS320 (2026), section 6.1 — UK policies and HS321 (2026), section 6.1 — foreign policies.

The onshore notional credit

On an onshore (UK) bond the life office has paid tax within the fund, so the gain carries a notional tax credit at the basic rate for savings under ITTOIA 2005 s.530 — 20% for 2026/27, rising to 22% for gains arising from 6 April 2027, when the savings rates become 22%, 42% and 47% (Finance Act 2026 s.5) — treated as already paid, and not repayable. A basic-rate taxpayer typically has no further tax to pay; a higher- or additional-rate taxpayer pays the difference between their savings rate and that credit (20 or 25 percentage points in both years), after top-slicing relief. An offshore bond carries no such credit against the real liability, so the whole gain is taxable at the individual's rates before top-slicing relief is deducted.

Keep that real-liability rule separate from the relief calculation. ITTOIA 2005 s.531(1) makes the s.530 basic-rate deduction apply to an offshore gain only for calculating top-slicing relief. IPTM3830 therefore deducts it from both the total liability and the relieved liability inside that comparison. It is not tax actually paid within the offshore fund, does not appear as tax paid on the chargeable-event certificate, and is not a credit against the member's final liability.

Worked-example basis: No time-apportioned reduction is due for any gain or policy shown. TAR is not calculated or applied. Raw gains are shown before any TAR.

Two errors recur: taking the certificate's gain straight to a tax figure without top-slicing relief — throwing away the relief the regime is built around — and, on an onshore bond, forgetting the notional credit and over-paying. Confirm the gain and the slice on the chargeable event gain calculator, then run the five-step relief on the top-slicing relief calculator — which carries the onshore credit through and, signed in, prints the working to a compliance-annex PDF for the client file. If you're still decoding the certificate itself, see how to read a chargeable event certificate.

ICTA 1988 s.552 (certificate) · IPTM3510 (the gain) · ITTOIA 2005 ss.465–467 (who is liable) · IPTM3240 (death cases) · ITTOIA 2005 ss.530–531 (real credit vs TSR-only deduction) · IPTM3830 · IPTM7105 / IPTM7145 / HS320 (reporting) · TMA 1970 s.7 (notifying chargeability)