Massachusetts · Free tool
Massachusetts MTRS Retirement Calculator
The Massachusetts Teachers' Retirement System (MTRS) calculates your pension as an age factor multiplied by your years of creditable service multiplied by your average salary, capped at 80% of salary. Enter your numbers below for an estimate.
Enter your numbers. The percentage is your MTRS age factor; raise it toward 2.5% for a later retirement age or lower it for an earlier one.
MTRS uses an age factor that rises with your retirement age, roughly 1.45% to 2.5% depending on your membership tier and age, applied to your highest 3 consecutive years (5 years for members who joined on or after April 2, 2012). The total benefit is capped at 80% of salary. Adjust the percentage to your age factor. Confirm with MTRS.
Your estimated Massachusetts MTRS pension
Updates as you type.
Educational estimate only, not financial advice. Uses a simplified MTRS age-factor formula and your inputs; your real benefit varies by age, service, salary rules, and the 80% cap.
How the Massachusetts MTRS formula works
MTRS multiplies an age factor by your years of creditable service by your average salary. The age factor is not fixed: it rises with the age at which you retire, running from about 1.45% up to a maximum of 2.5%. Your average salary is the average of your three highest consecutive years if you joined before April 2, 2012, or your five highest consecutive years if you joined on or after that date. The total pension cannot exceed 80% of your average salary.
Because the age factor drives the result, two teachers with identical service and salary can receive very different pensions depending on when they retire. This calculator lets you test different age factors against the 80% cap. Note that most Massachusetts teachers do not pay into Social Security for their MTRS-covered work. Use the full Teacher Retirement Calculator to combine your pension with your 403(b)/457(b), or read what the WEP and GPO repeal means for teachers.
Questions
How is a Massachusetts MTRS pension calculated?
MTRS multiplies an age factor by your years of creditable service by your average salary, capped at 80% of salary. For example, an age factor of 2.0%, 30 years, and a $75,000 average is 2.0% × $75,000 × 30 = $45,000 per year, subject to the 80% cap.
What is the MTRS age factor?
The age factor is a percentage that rises with your retirement age, running roughly from 1.45% up to 2.5% depending on your membership tier. Retiring younger means a lower age factor and a smaller benefit.
Do Massachusetts teachers get Social Security?
Most do not pay into Social Security for their MTRS-covered teaching, so they receive an MTRS pension instead. The Social Security Fairness Act, signed in January 2025, repealed the WEP and GPO that previously reduced any other Social Security a teacher had earned.