Canadian retirement income is a layered system, not one coordinated pension. CPP/QPP, OAS, GIS, and workplace pensions each have their own eligibility basis, start timing, tax treatment, indexing pattern, survivor rules, and review process.

CPP/QPP is generally contribution-based. OAS is generally residence-based. GIS is income-tested and requires OAS. Workplace pensions are plan-based, meaning the plan text, pension statement, and administrator information matter.

The same total cash flow can produce different after-tax results depending on the source mix. A pension payment, a RRIF withdrawal, a TFSA withdrawal, and a GIS payment do not enter the tax-and-benefit system in the same way.

Timing also matters. CPP/QPP can often start before OAS. OAS can start at 65 or be delayed, but delaying OAS can also delay access to GIS and the Allowance. Workplace pension start dates, bridge benefits, survivor options, and indexing depend on the plan.

For couples, there are two layers to review: individual entitlements and household cash flow. CPP/QPP and OAS are individual benefits, GIS often depends on household income and status, and workplace survivor terms depend on the pension plan or contract.

This article is a map, not an optimization rule. The first task is to identify each income source correctly before comparing start dates, withdrawal timing, tax exposure, or benefit interactions.