Pecuniary Legacy UK (2026): What It Is, Types of Legacy, Abatement & How to Draft One

A pecuniary legacy is a gift of a fixed sum of money in a will — for example, 'I give £10,000 to my friend Sarah Jones.' It is one of three main types of legacy (alongside specific legacies and residuary legacies). A pecuniary legacy is simple to write and understand, but it carries an inflation risk: a legacy of £10,000 written today will have considerably less purchasing power in 20 years when the will is eventually used. Pecuniary legacies are paid from the residuary estate before it is distributed; if the estate is insufficient to pay all pecuniary legacies in full, they abate proportionally.

A pecuniary legacy is a fixed cash gift — any sum of money payable from the general estate. A specific legacy is a gift of a specific identified asset — for example, 'my Rolex watch', 'my car registration XX21 YYY', or 'my shares in XYZ plc held at Hargreaves Lansdown'. The key difference in risk: a specific legacy can fail by ademption — if the specific item no longer exists in the estate at death (because it was sold, lost, or destroyed), the gift simply lapses and the beneficiary receives nothing. A pecuniary legacy cannot fail by ademption — money is fungible and the executor pays the sum from whatever funds the estate holds.

A residuary legacy (or residuary gift) is a gift of whatever remains of the estate after all debts, expenses, taxes, and specific and pecuniary legacies have been paid. It is defined by what is left over, not by a fixed amount. For example: 'I give the residue of my estate to my children in equal shares.' The residuary legacy is the catch-all provision — it prevents intestacy for any assets not specifically gifted. A pecuniary legacy has priority over the residue: pecuniary legacies are paid first, and only what remains goes to the residuary beneficiaries. This means a large pecuniary legacy can reduce or even eliminate the residuary estate if the estate value falls.

Abatement is the legal mechanism that applies when the estate cannot pay all its debts and legacies in full. Legacies are paid in priority order: (1) funeral and testamentary expenses; (2) secured debts (mortgage); (3) preferential debts (HMRC); (4) unsecured debts; then (5) specific legacies; (6) pecuniary legacies; (7) residuary estate. Pecuniary legacies abate ratably among themselves if the estate is insufficient — each pecuniary legatee receives the same proportional reduction. For example, if two £5,000 pecuniary legacies exist but only £6,000 is available after debts, each legatee receives £3,000 (50% abatement). The residuary estate bears the greatest risk — it is the first to be exhausted.

Ademption occurs when a specific legacy fails because the identified asset no longer exists in the estate at the date of death. If you leave 'my Honda Civic registration AB22 CDE' and you sold the car two years before you died, the gift is adeemed — the beneficiary receives nothing and has no claim against the estate for equivalent cash. Ademption applies only to specific legacies, not pecuniary legacies. Common causes: selling shares specifically gifted, spending savings in an account specifically named, selling a specifically named property. To prevent ademption, use a general description ('the motor vehicle I own at death, if any') or add a substitution clause ('or if I no longer own such vehicle, £X in cash').

A pecuniary legacy of £10,000 written into a will today will still be £10,000 in 30 years' time — wills are not automatically updated for inflation. Over 20 years at 3% average inflation, £10,000 loses roughly 45% of its purchasing power. This is a particular problem for large specific cash gifts: a legacy intended to fund a grandchild's university education or deposit on a house may be inadequate by the time the will is used. Solutions: (1) leave a percentage of the estate rather than a fixed sum ('5% of my residuary estate to each grandchild'); (2) review and update the will regularly; (3) use an index-linked formula ('£10,000 at 2026 prices, adjusted by RPI').

A correctly drafted pecuniary legacy should specify: (1) the exact sum in words and figures; (2) the full legal name of the beneficiary (not 'my friend Sarah' — use full name and, optionally, address or relationship); (3) a substitute beneficiary in case the primary beneficiary predeceases you; (4) any conditions (though conditions should be used cautiously as they can be void for uncertainty). Example: 'I give the sum of Ten Thousand Pounds (£10,000) to Sarah Elizabeth Jones of [address] absolutely. If Sarah Elizabeth Jones shall predecease me, I give the said sum to [substitute name] absolutely.' Always include a residuary clause covering everything not specifically gifted, and appoint an executor capable of administering the estate.