who joined OTRS prior to July 1, 1992, can retire when his or her age and years of creditable service total 80 points, or they have reached 62 years of age. People who joined the system after that date can retire when their age and years of creditable service total 90 points, or they have reached 62 years of age. Anyone joining the system after November 1, 2011 can retire at sixty, as long as they have accumulated 90 points, or at age 65. Early retirement Reduced benefits are available for clients who have not reached full retirement eligibility under regular retirement. To meet this criteria, the OTRS member either must complete at least 30 years of state service, but be younger than age 50, or the person in question must have at least five years of vested service, and be between the ages of 55 and 61 under the rule of 80, or rule of 90. It the client falls under rule of 90/65, they will be eligible for reduced benefits between the ages of 60 and 64. Benefits OTRS calculates its benefits using the following formula: 2 percent x (service years) x (final average salary [base salary or actual W2 earnings for the year?]) ÷ 12 = monthly benefit. Depending on the number of service years and the final average salary, a person's retirement benefit can vary, but each person, regardless, will receive 2 percent. Additionally, for service earned prior to June 30, 1995 contributions into the system only paid on either the first $25,000 of $40,000 of annual income. Because the contributions for these years of service were capped, the retirement benefits are also capped. This results in a two-tiered retirement benefit calculation with the first tier being those years on which contributions were capped and the uncapped years in the second tier, which results in a retirement benefit that is smaller than would be expected based solely on the formula above. There are two traditional categories of OTRS clients: a Rule of 80 (or age 62) and Rule of 90 (or age 62) retirement eligibility. Those who joined the system prior to July 1, 1992, are under the Rule of 80 and those who joined on or after that date are under the Rule of 90. The benefit formula is the same for both; only the retirement eligibility is different. A legislative change enacted in 2011