CPP and OAS timing: what changes if you take benefits early or late

CPP and OAS both let you shift when payments start — and both adjust the monthly amount depending on when you do. The adjustment itself is fixed by the program; what's worth thinking through is which timing actually fits your situation.

The mechanics

CPP can start any time between age 60 and 70. Starting before the standard age of 65 reduces your monthly amount; starting after increases it. The commonly published adjustment is roughly 0.6% less per month before 65 (up to about 36% less at 60) and roughly 0.7% more per month after 65 (up to about 42% more at 70). These are the published program rates — confirm the current figures on your own Service Canada statement, since they're set by the program and can be updated independently of anything here.

OAS has a narrower range: 65 to 70, with no early option. Delaying past 65 increases the monthly amount by roughly 0.6% per month, up to about 36% more at 70.

What actually changes the answer

The adjustment factors are the same for everyone; the right timing usually isn't, because it depends on:

• Other income between now and the delayed start age. Delaying either benefit means bridging that gap with something else — savings, part-time work, or another pension. If there's nothing to bridge with, starting earlier may be the only workable option regardless of the math.
• The OAS recovery tax ("clawback"). OAS is reduced once net income passes an annual threshold, and eliminated entirely above a higher one. Starting OAS in a high-income year — including a year with other pension income or RRSP withdrawals — can trigger a clawback that a different timing would have avoided.
• Health and longevity expectations. The break-even age where delaying "pays off" versus starting early is typically in the late 70s to early 80s. Delaying is a bet on living past that age; starting early is a bet on the opposite, or simply a preference for certainty sooner.
• Whether you're still working. Continuing to work while collecting either benefit is allowed, but the income adds up for OAS clawback purposes and affects your marginal tax rate on the benefit itself.

None of this reduces to a single "best age" — it's a household-specific calculation involving other income sources, tax brackets, and how much certainty is worth to you.

Mensari is an educational decision-support tool, not licensed financial, tax, or legal advice. It illustrates tradeoffs based on the assumptions you provide — always confirm decisions with a qualified professional before acting.

Mensari walks through retirement income timing as one of the six FP Canada planning areas, alongside the rest of your plan — so a CPP/OAS decision isn't made in isolation from your tax picture or other accounts.