CPP Post-Retirement Benefit Calculator

The PRB is the CPP system's reward for continuing to contribute after you've started your retirement pension. It was added as part of the 2012 CPP changes and works alongside the regular pension — you don't have to choose between the two. Each year you contribute earns a small additional payment that begins the following year and continues for life.

The formula: annual PRB = Service Canada's published maximum new PRB at age 65 for the following year × (your pensionable earnings ÷ that year's YAMPE, capped at 1) × age adjustment factor. Service Canada publishes this maximum directly each year (it reflects the CPP enhancement's higher accrual rate plus the CPP2/YAMPE second-additional tier, so it runs higher than a simple 1/40 share of the retirement pension — the January 2026 maximum new PRB is $54.69/month, versus a maximum retirement pension of $1,507.65/month). Earnings between the YMPE and YAMPE count toward your PRB too, since CPP2 contributions on that band build enhanced benefit just like CPP1 does below the YMPE.

The age adjustment factor uses your age on January 1 of the year the PRB starts, which is the year after you earn it (Canada Pension Plan, s. 59.1(1.1)). It mirrors the CPP retirement pension start-age rules: 0.6% reduction per month before 65 (so age 60 = 64%), and 0.7% increase per month after 65 (so age 70 = 142%). So if you turn 65 in January and work that year, the PRB starts the next January when you are 65 and 11 months, and its factor is 107.7% rather than 100%. Practically: earning PRB at 67 is worth about 17% more per year than earning it at 65.

Mandatory vs optional contributions: between 60 and 64, contributions are mandatory if you're employed; from 65 to 69 you can file CRA form CPT30 to stop contributing (and earning more PRB) — a copy goes to your employer and the original to the CRA, and the election takes effect on the first day of the following month (CPP s. 12(1.1)), so made in the month you turn 65 it leaves that month and the year's earlier months contributory. The calculator prorates that year's maximum to those months, the election month included, as CRA's payroll guide (T4001) counts them; read literally, s. 17(b) of the Act could give one month fewer; from the month after you turn 70 you no longer contribute, even if you are still working, so in that year only the months up to your birthday month count (CPP s. 12(1)(d), s. 17).

Quebec workers: the QPP has its own version, the retirement pension supplement (Act respecting the Québec Pension Plan, s. 120.3). It is 0.66% of the year's earnings above the basic exemption up to the YMPE plus 0.66% of earnings between the YMPE and YAMPE, with no age adjustment, and QPP contributions run through the year you turn 72, or the year after that with a December birthday, because the Act deems a birthday to fall on the first of the following month (s. 9). The calculator models an employee: a self-employed worker pays both shares of QPP, and their election to stop is deemed made on the first day of the month they choose (in the year they turn 65, no earlier than the birthday month), with the year's self-employed earnings prorated to the months before it (s. 49.1, s. 48); the calculator does not model either. Pick Quebec as your province and the calculator switches to these rules.

Indexation: once a PRB starts paying, it's CPI-indexed for life — so the headline numbers in this calculator understate the real-dollar value over a long retirement.