Enter the age and years of service into the calculator to determine the Rule of 90. This calculator can also evaluate any of the variables given the others are known.

Rule Of 90 Formula

The following formula is used to calculate the Rule of 90.

Rule of 90 = A + Y

Variables:

  • A is the age of the individual
  • Y is the years of service

To calculate the Rule of 90, add the age of the individual to the years of service. If the sum is 90 or more, the individual is eligible for full retirement benefits.

What is a Rule Of 90?

The Rule of 90 is a guideline used in retirement planning, particularly in Canada. According to this rule, a person can retire when their age and years of service total 90. For example, if a person is 60 years old and has worked for 30 years, they meet the Rule of 90 because their age and years of service add up to 90. This rule is used to determine eligibility for full pension benefits.

How to Calculate Rule Of 90?

The following steps outline how to calculate the Rule of 90.


  1. First, determine the age of the individual (A).
  2. Next, determine the years of service (Y).
  3. Add the age of the individual (A) to the years of service (Y) using the formula Rule of 90 = A + Y.
  4. Finally, calculate the Rule of 90.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

age of the individual (A) = 55

years of service (Y) = 35