Defined Benefit And Defined Contribution Are Different Promises

Pension schemes fall broadly into two structures. They are often compared on generosity, but the meaningful difference is who bears the uncertainty.

One promises an income, the other a pot

A defined benefit scheme promises a specified income in retirement, usually calculated from salary and years of service under a stated formula.

A defined contribution scheme promises only that contributions will be invested. What emerges depends on the amounts paid in, the charges deducted and investment performance.

The first defines the outcome and leaves the funding to be worked out. The second defines the funding and leaves the outcome to be discovered.

Risk sits with the employer or the individual

Under a defined benefit arrangement, if investments underperform or members live longer than assumed, the employer must make up the difference to meet the promise.

Under a defined contribution arrangement, the same events reduce the individual's eventual income. There is no counterparty obliged to close the gap.

This is the whole distinction. Everything else — cost, availability, transferability, statement design — follows from where that risk has been placed.

Longevity is handled differently

A defined benefit income continues for life, and often provides a reduced income to a surviving partner. The scheme absorbs the uncertainty about how long that is.

A defined contribution pot has no such property by default. The individual either manages withdrawals against an unknown lifespan or buys an income that provides the same guarantee.

Purchasing that guarantee costs money, and its price moves with interest rates and life expectancy assumptions at the moment of purchase.

Statements report incomparable things

A defined benefit statement typically shows an income figure accrued to date. A defined contribution statement shows a current value and a projection.

The two cannot be added together meaningfully, and the pot figure will normally look larger while representing less certainty.

Households with both, which is common after several job moves, therefore find it difficult to see their overall position from the documents they receive.

Availability has shifted over a working life

Defined benefit provision in the private sector has narrowed considerably over recent decades, largely because the risk it places on employers proved expensive and volatile.

Someone with a long career may hold an older defined benefit entitlement from early employment alongside later defined contribution pots, each behaving differently.

Scheme rules, protections and the treatment of transfers between the two vary by jurisdiction and change, and the terms of the specific scheme govern in every case.