What a defined benefit promise actually promises

Two pensions can be described using the same word while working in entirely different ways. The distinction is who carries the risk, and it changes everything downstream.

A formula rather than a balance

A defined benefit arrangement promises an income calculated from a formula, typically involving salary and years of service, rather than from the value of any investments.

There is no individual pot. Contributions go into a collective fund, and the member's entitlement is the promised payment rather than a share of assets.

This is why such schemes cannot report a balance in the way a personal pension does. The relevant figure is the income promised, not an accumulated sum.

The risks sit with the scheme

Investment performance is the scheme's problem. Poor returns create a funding shortfall for the employer to address rather than a reduced income for the member.

Longevity is also the scheme's problem. Payments continue for as long as the member lives, so living a long time does not exhaust anything.

That transfer of risk is the defining feature. It is what makes the promise valuable and what makes such schemes expensive to provide.

The promise depends on the promiser

An income promised by an employer depends on that employer continuing to exist and to meet the obligation, which introduces a different kind of risk.

Many jurisdictions operate arrangements to protect members where a sponsor fails, generally providing a reduced level of benefit subject to conditions.

Those arrangements and their limits vary by jurisdiction and change over time, so the protection in force is whatever currently applies locally.

Increases are part of the promise or they are not

Whether a defined benefit income rises over time is set by the scheme's rules, and the basis varies substantially between schemes and between periods of service.

Some benefits increase in line with a published measure, some by a capped amount and some not at all. One person's pension can combine several bases.

Scheme documentation states which applies, and the answer materially affects what the income will be worth decades later.

Comparing it with a pot is difficult

A guaranteed lifelong income and an accumulated balance are not comparable by size. Converting one into the other requires assumptions about rates and longevity.

Values quoted for transferring out of such a scheme are calculated on the scheme's assumptions, and giving up a guarantee is generally irreversible.

Because the decision is permanent and the arithmetic depends on individual circumstances, it is one where regulated advice is commonly required rather than merely recommended.