Deficiency relief: when a bond loss gives money back

Deficiency relief gives back some of the tax paid on earlier part-surrender gains when a bond is finally cashed in at a loss. It is the mirror image of the 5% allowance trap — that trap can tax a withdrawal as a gain even while a bond is under water; this relief unwinds part of that tax once the loss crystallises. The relief comes 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. The final chargeable event on the bond — a full surrender, maturity or death — has to be a loss: a negative gain, a “deficiency”. That usually happens where earlier part-surrender excess events were taxed on gains the bond never really made. And those earlier excess gains must have been taxed on the same individual. The individual must claim it: the relief is not applied automatically (ITTOIA 2005 s.539(1)(c)).

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 is a tax reduction — not a loss to carry forward, 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. Income is attributed so as to give the highest reduction (s.539(9)): for a rest-of-UK taxpayer that means dividend-upper income first (a 25-point gap to the dividend ordinary rate), then higher-rate income (a 20-point gap to basic rate). For a Scottish taxpayer, Scottish higher-rate and advanced-rate income also qualify, each relieved down to the Scottish basic rate; for a Welsh taxpayer, Welsh higher-rate income qualifies, relieved down to the Welsh basic rate (s.539(8)). Income taxed at the UK additional rate, the Scottish top rate or the dividend additional rate does not qualify at all (IPTM3880).

In short: the individual must claim; the deficiency is treated as reducing income that bears a relevant higher rate (higher, default higher, savings higher, dividend upper, Scottish higher or advanced, or Welsh higher), with relief at the difference between that rate and the matching basic (or dividend ordinary) rate.

A worked example

HMRC’s worked example at IPTM3880 (“Lisa”) shows the mechanics, and our engine reproduces it. 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.

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 on the same person, relief is available only where that person has income bearing a relevant higher rate in the year of the final event.

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. Any deficiency that can’t find qualifying income is simply unrelieved — not repaid, not carried forward. UK additional-rate income doesn’t qualify either — though a Scottish taxpayer’s 45% advanced-rate income does. The value of the relief turns 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 (including the s.539(8) table of relevant rates) · IPTM3860 · IPTM3870 · IPTM3880 — figures engine-verified against the IPTM3880 “Lisa” example