What is deficiency relief on an investment bond?

A tax reduction available when a bond’s final chargeable event is a loss (a “deficiency”) after earlier part-surrender excess gains were taxed on the same person. It hands back some of the tax those earlier gains caused — but only to the extent the person’s income is taxed above the basic/ordinary rate.

Who can claim deficiency relief?

Only an individual whose income for the year includes amounts taxed at the higher rate or the dividend upper rate. The relief is the gap between that rate and the basic/ordinary rate. A basic-rate taxpayer, or income taxed at the additional rate, gets no relief (IPTM3880).

How much is deficiency relief worth?

The deficiency is capped at the total of the earlier excess gains taxed on the person. The relief is that amount times the difference between the relevant rate and the appropriate lower rate — e.g. 20 points for higher-rate income (40%→20%), or 25 points for dividend-upper income in 2024/25.

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Part of the Top-slicing relief guide →

Deficiency relief: when a bond loss gives money back

Tax was paid on earlier excess withdrawals; the bond then ends at a loss. Deficiency relief hands some of that tax back — as a reducer, and only where income sits above basic rate.

Based on ITTOIA 2005 s.539 and HMRC’s Insurance Policyholder Taxation Manual (IPTM3860, IPTM3870, IPTM3880).

6 min read · Last reviewed 19 Jun 2026

Deficiency relief is the mirror image of the 5% allowance trap. That trap can tax a withdrawal as a gain even when a bond is under water; deficiency relief is the relief that can follow when the bond is finally cashed in at a loss after those earlier gains were taxed. It hands back some of the tax — but as a tax reduction, and only where the person’s income is taxed above the basic rate.

The rule

Two conditions have to line up. First, the final chargeable event on the bond (a full surrender, maturity or death) has to be a loss— a negative gain, a “deficiency”. That typically happens where earlier part-surrender excessevents were taxed on gains that, by the end, the bond never really made. Second, those earlier excess gains must have been taxed on the same individual.

The deficiency available is the lesser of the size of the final loss and the total of those earlier excess gains (IPTM3870) — you can’t relieve more than was taxed. The relief itself is a tax reduction, not a loss to carry forward and not a repayment of the gain: the deficiency is set against the person’s income for the year and relieved at the difference between the rate that income bears and the appropriate lower rate. Dividend income taxed at the dividend upper rate is relieved first (down to the dividend ordinary rate), then non-dividend income at the higher rate (down to basic rate). Income taxed at the additional rate, or the dividend additional rate, does not qualify at all (IPTM3880).

Relief is given by treating the deficiency as reducing the individual’s income liable at the higher rate (and dividend income liable at the dividend upper rate), with relief at the difference between that rate and the basic (or dividend ordinary) rate.

HMRC IPTM3880, summarised

A worked example

Take HMRC’s own worked example at IPTM3880 (“Lisa”), which our engine reproduces to the penny. Lisa’s bond produces a £10,000 deficiency on final surrender in 2024/25, after earlier excess events were taxed on her. For the year she has £4,000 of dividend income taxed at the dividend upper rate and ample income taxed at the higher rate.

Deficiency relief — HMRC IPTM3880 “Lisa” · 2024/25

Deficiency (capped at earlier taxed gains): £10,000
Set against dividend-upper income: £4,000
Relief on it (25-point gap to dividend ordinary): £1,000
Set against higher-rate income: £6,000
Relief on it (20-point gap to basic rate): £1,200
Total deficiency relief (tax reduction): £2,200

The £4,000 of dividend-upper income soaks up £4,000 of the deficiency first, relieved at the 25-point gap between the dividend upper and ordinary rates — £1,000. The remaining £6,000 falls on higher-rate income, relieved at the 20-point gap between the higher and basic rates — £1,200. Total reduction in Lisa’s tax bill: £2,200. None of the deficiency goes unrelieved here, because she has enough higher- and upper-rate income to absorb all £10,000.

The common error

The first mistake is to treat a final-surrender loss as simply “no gain” and stop there — missing the relief entirely. A bond that was withdrawn from heavily (triggering excess gains) and then surrendered at a loss is exactly the shape that deficiency relief exists for; if the earlier gains were taxed, there is relief to claim.

The second is to expect it to help a basic-rate taxpayer. It can’t: the relief is the gap above basic rate, so a person with no higher- or upper-rate income for the year gets nothing, and any deficiency that can’t find qualifying income is simply unrelieved — it is not repaid and not carried forward. Nor does additional-rate income qualify. So the value of the relief depends entirely on the rest of the person’s income in the year of the final event.

Build the underlying gains and the final-surrender position on the chargeable event gain calculator; the part-surrender mechanics that create the earlier excess gains are in the 5% allowance trap, and the relief that spreads a positive gain is in the top-slicing relief guide.

ITTOIA 2005 s.539 · IPTM3860 · IPTM3870 · IPTM3880 — figures engine-verified against the IPTM3880 “Lisa” example

Common questions

What is deficiency relief on an investment bond?: A tax reduction available when a bond’s final chargeable event is a loss (a “deficiency”) after earlier part-surrender excess gains were taxed on the same person. It hands back some of the tax those earlier gains caused — but only to the extent the person’s income is taxed above the basic/ordinary rate.
Who can claim deficiency relief?: Only an individual whose income for the year includes amounts taxed at the higher rate or the dividend upper rate. The relief is the gap between that rate and the basic/ordinary rate. A basic-rate taxpayer, or income taxed at the additional rate, gets no relief (IPTM3880).
How much is deficiency relief worth?: The deficiency is capped at the total of the earlier excess gains taxed on the person. The relief is that amount times the difference between the relevant rate and the appropriate lower rate — e.g. 20 points for higher-rate income (40%→20%), or 25 points for dividend-upper income in 2024/25.

Sources & grounding

Rule + relief mechanics: ITTOIA 2005 s.539; IPTM3860 / 3870 / 3880 — the engine’s DEFICIENCY_RELIEF_CITATION (calc-engine/bond/deficiency-relief.ts), operator-reviewed. Deficiency = the LESSER of the magnitude of the negative final-event gain and the total of earlier excess-event gains taxed on the same individual (IPTM3870). Relief = a tax reduction = deficiency × (relevant rate − appropriate lower rate), dividend-upper income first, then higher-rate; additional-rate / dividend-additional income does NOT qualify (IPTM3880).
Worked figures: HMRC IPTM3880 worked example (“Lisa”), reproduced to 0p by calculateDeficiencyRelief (calc-engine/bond/__tests__/deficiency-relief.test.ts) — £10,000 deficiency (2024/25); £4,000 set against dividend-upper income → £1,000 (the 25-point gap to the dividend ordinary rate); £6,000 against higher-rate income → £1,200 (the 20-point gap to basic rate); total relief £2,200; nil unrelieved.
No public calculator computes deficiency relief, so this spoke shows the verified figures without an embed (the gain side is built on /calculators/chargeable-event-gain).

For planning and illustration purposes only. Verify all inputs against source documents. This explainer does not constitute financial or tax advice.