Why Is My CPP Less Than Expected? How the CPP Pension Is Calculated

Your CPP retirement pension depends on what you earned and contributed over your working life, not on your salary when you retire. This page explains how Service Canada works out the pension, the usual reasons it comes in below the maximum, and what to do if yours looks wrong. It is part of the Canada Pension Plan hub.

What sets your pension

Service Canada lists three things: the age you start the pension, how much and for how long you contributed, and your earnings over your working life.

The maximum retirement pension for a pension starting at 65 in January 2026 is $1,507.65 a month, and the average new retirement pension was $858.34 in July 2026. The maximum CPP payment page covers the maximums.

Source: Service Canada, how much you could receive.

How the calculation works

1. Your pensionable earnings each year. Only earnings up to that year’s maximum pensionable earnings (the YMPE, $74,600 in 2026) count. A year at or above the YMPE is a full year; a year at half the YMPE counts for half.
2. Your contributory period. It runs from 18 until you start the pension (or 70).
3. Low years are left out. For the base part of the pension, up to 8 years of your lowest earnings are dropped. For the enhanced part, built from contributions made since 2019, your best 40 years are used.
4. The two parts. The base part is the original CPP, funded by a contribution rate of 9.9% shared by you and your employer. The enhanced part comes from the higher rates since 2019, including CPP2, and grows with each year of enhanced contributions (CPP enhancement and CPP2).
5. Your start age. The pension is 0.6% lower for each month you start before 65 and 0.7% higher for each month after, up to 70 (CPP at 60 vs 65 vs 70).

Because 8 of the 47 years from 18 to 65 can be dropped from the base part, about 39 years at the maximum are enough for the maximum pension.

Periods that can be left out or made up

Source: Service Canada, how much you could receive.

Common reasons a pension is below the maximum

• Earnings below the YMPE in many years, from part-time work, a lower-paid career, or years at the start of a career.
• More low or zero years than the drop-out covers: for example years of study, time out of work or years living abroad.
• Starting before 65. The reduction is permanent.
• Income taken as dividends from your own corporation. Dividends aren’t pensionable earnings, so years paid that way add nothing.
• Few years of enhanced contributions. The enhanced part only began in 2019, so people retiring now have only a few years of it.

If your amount looks wrong

1. Check your Statement of Contributions in My Service Canada Account for missing or low years, and compare it with your T4 slips (or, if self-employed, your tax returns).
2. If you raised children, check that the child-rearing provisions were applied.
3. Contact Service Canada at 1-800-277-9914 about any error in your record.
4. If you disagree with the decision on your pension, you can ask for a reconsideration within 90 days of the decision letter, and appeal to the Social Security Tribunal after that.

A pension also grows after it starts: it rises with inflation each January, and working while you receive it adds a post-retirement benefit. To estimate your pension at other start ages, use the CPP calculator.