Defined benefit vs defined contribution pension

A defined benefit (DB) plan promises you a specific retirement income, set by a formula rather than by investment performance. The employer (the plan sponsor) is responsible for funding that promise and for managing the money to deliver it. The classic formula is:

Annual pension = accrual rate × years of service × average earnings

Accrual rates typically run from 1.3% to 2% per year of service (2% is the maximum the Income Tax Act allows). The earnings base is usually your best- or highest-average earnings over several years — often the best five — rather than your final salary, despite the common "final-average" shorthand. So 30 years at a 2% accrual on a $80,000 average would promise about $48,000 a year for life (2% × 30 × $80,000).

Because the employer guarantees the payout, the plan carries the investment and longevity risk. Many DB plans also pay a temporary bridge benefit to age 65 (when CPP and OAS typically begin) and, especially in the public sector, index the pension to inflation. Those features make a healthy DB pension extremely valuable.

A defined contribution (DC) plan flips the guarantee. Instead of promising an income, it fixes the contributions: you and your employer each pay a set percentage of your salary into your own account — often with the employer matching what you put in. Combined contributions commonly land in the 8–12% range, though this varies widely.

That account is invested, and your retirement income depends entirely on how much went in and how the investments performed. There is no promised payout, which means you bear the investment and longevity risk. A Group RRSP or a Pooled Registered Pension Plan (PRPP) works on the same DC principle. The upside is that the balance is genuinely yours — portable and inheritable in a way a DB pension is not.

The two plan types trade off security against control. Here is how they line up:

The pattern is consistent: DB shifts risk to the employer and delivers certainty; DC keeps risk with you and delivers flexibility and estate value.

DB still covers the majority of pension-plan members in Canada, but that majority is overwhelmingly in the public sector. In the private sector, employers have been steadily shifting to DC to escape the funding risk. Of registered pension plan members (Statistics Canada, as of January 1, 2023):

Bottom line: if you work in the public sector you most likely have DB; if you work in the private sector you are increasingly likely to have DC — and many younger workers have no workplace plan at all.

With a DB plan, leaving before retirement gives you a choice: keep a deferred pension that starts paying later, or take the commuted value as a lump sum into a locked-in account. That decision is large and usually irreversible, so it is worth modelling carefully. Most Canadian plans now vest immediately, so you keep the employer-funded portion even after short service.

With a DC plan, your account is locked-in pension money, so at retirement it moves to a LIRA and then a LIF, or you use it to buy a life annuity. Either way, the goal is the same — turning a pot of savings into income you cannot outlive, which is precisely the thing a DB plan handed you automatically.

It is tempting to treat a DB pension as bulletproof, but "very secure" is more accurate than "guaranteed." DB plans must meet funding tests — going-concern and solvency — and Ontario adds a reserve called the Provision for Adverse Deviations (PfAD). Solvency rules were relaxed (not abolished) in 2018: special payments generally kick in only if a plan falls below 85% funded.

If a sponsor becomes insolvent and the plan is wound up underfunded, benefits can be reduced. Only Ontario offers a safety net — the Pension Benefits Guarantee Fund — and it is capped at a $3,000 monthly guarantee as of the 2026 Ontario Budget. Public-sector plans are generally the most secure of all. The takeaway: a DB pension is one of the safest retirement assets you can have, but it is strongly protected rather than truly risk-free.

Not every plan is purely one or the other. Target-benefit and shared-risk plans (New Brunswick's are the best-known) fix contributions like a DC plan but aim for a defined benefit like a DB plan — with the crucial difference that benefits, especially indexing, are conditional on the plan's health and can be trimmed if the fund struggles. Combined with other hybrids, these "in-between" arrangements cover a meaningful share of Canadian pension members, and they are a deliberate attempt to share risk more evenly between employer and employee.

This guide is for educational purposes only and is not financial advice. Accrual rates, indexing, bridge benefits, funding rules, and the Ontario PBGF guarantee vary by plan and jurisdiction and were current at the time of writing; the prevalence figures reflect Statistics Canada data as of January 1, 2023. Confirm the specifics of your own plan with your administrator and consult a qualified financial planner before making pension decisions. See our commuted value guide and LIRA & LIF guide for related reading.