CPP and OAS, Explained

CPP and OAS get lumped together constantly, but they're built on completely different logic — one is based on what you contributed, the other on how long you've lived in Canada. Mixing them up leads to bad assumptions about what retirement income will actually look like.

CPP: earnings-based

The Canada Pension Plan is funded by contributions deducted from your paycheque throughout your working life — see Understanding Your Canadian Pay Stub for exactly how that deduction is calculated. What you eventually receive is based on how much and how long you contributed — there's no flat amount that applies to everyone.

The timing decision matters more than people expect: you can start as early as 60 or as late as 70, and the amount is reduced for starting early or increased for starting late. Starting before 65 means a permanent reduction; delaying past 65 means a permanent increase. There's no universally correct age to start — it depends on health, other income sources, and how long you expect to need the income to last.

OAS: residency-based

Old Age Security works differently — it's based on how many years you've lived in Canada as an adult, not on employment history at all. That makes it especially relevant for newcomers or anyone with a non-traditional work history, since OAS eligibility doesn't depend on ever having worked in Canada.

One detail worth knowing: higher-income retirees can have part or all of their OAS "clawed back" through a recovery tax. It isn't guaranteed at the full amount for everyone at every income level.

Side by side

Why the timing decision matters

Starting either benefit early means a smaller, guaranteed payment for longer. Starting later means a larger payment, but a shorter time collecting it. Neither choice is automatically better — it depends on health expectations, other income in the meantime, and how the rest of a retirement plan is structured around it.

What to do next

CPP and OAS are two pieces of a larger picture — the third being personal savings through accounts like an RRSP. Understanding how all three fit together is the more useful next question. For the specific math behind when to actually start CPP — including the breakeven ages between starting at 60, 65, or 70 — see CPP at 60 vs. 65 vs. 70. And for how it all adds up against your expected retirement spending, see retirement income basics.