Massachusetts Teacher Retirement System: Tiers, Pensions, Payouts

The Massachusetts Teachers’ Retirement System (MTRS) is the mandatory defined-benefit pension for public school educators across the Commonwealth. If you teach in a Massachusetts public school, educational collaborative, or charter school, you are automatically enrolled from your first paycheck, and your future pension is built from three things: your age at retirement, your years of creditable service, and the average of your highest consecutive years of salary.¹ How generous each of those pieces is depends heavily on one date: whether you first joined a Massachusetts contributory retirement system before or after April 2, 2012.

Who Is In and Who Is Not

MTRS membership is not optional. Contributions come out of your paycheck pretax from day one of your employment. Part-time educators are covered too, but their creditable service is prorated based on their full-time equivalent percentage.²

One boundary worth flagging up front: teachers employed by Boston Public Schools belong to the Boston Retirement System, not the MTRS.³ Many rules under Chapter 32 look similar, but the MTRS-specific numbers on this page do not govern Boston teachers.

You become vested in the MTRS after 10 years of creditable service. Vesting means that if you leave public education before retirement age, you can leave your money in the system and collect a pension once you reach eligibility. Leave before 10 years and you can only take a refund of your contributions; there is no future pension entitlement.²

Tier 1 vs. Tier 2

The 2011 Pension Reform Act split MTRS members into two tiers based on when they first joined any Massachusetts contributory retirement system.⁴ Almost every question about when you can retire and how much you will receive traces back to this line.

Tier 1 covers members who joined before April 2, 2012. You can retire at age 55 with at least 10 years of creditable service, or at any age with 20 or more years. Your pension uses the average of your three highest consecutive years of salary, and your age factor reaches the maximum 2.5% at age 65.

Tier 2 covers members who joined on or after April 2, 2012. You must reach age 60 with at least 10 years of creditable service. Your pension uses the average of your five highest consecutive years of salary, and the maximum 2.5% age factor is not reached until age 67.⁵

Same career, same salary history, different tier — the Tier 2 member generally works longer and receives a smaller pension at any given age. Tier 2 members do get one break: after reaching 30 years of creditable service, their contribution rate drops by 3%.⁴

What You Contribute

Your contribution rate is set by Massachusetts General Laws Chapter 32, Section 22 and depends on when you first entered service with the Commonwealth or a political subdivision:

Before January 1, 1975: 5% of regular compensation
January 1, 1975 through December 31, 1983: 7%
January 1, 1984 through June 30, 1996: 8%
On or after July 1, 1996: 9%

If you elected RetirementPlus, add another 2% on service performed on or after July 1, 2001, for a total of 11%.⁶ Most currently working teachers fall into the 9% or 11% bracket. Contributions stop when you retire or hit the maximum age for your classification group.

How the Pension Is Calculated

MTRS uses a defined benefit formula, so your monthly check is set by a calculation, not by market returns. Three inputs drive it:

Age factor, a percentage tied to your age at retirement. A Tier 2 member retiring at 60 starts at 1.45%; the factor climbs the longer you wait.
Years of creditable service, counted in full years and months.
Salary average — the top three consecutive years for Tier 1, top five for Tier 2.²

Multiply them: age factor × years of service × salary average. A Tier 1 member retiring at 62 with 35.3 years of service and a $75,600 salary average would use a 2.0% age factor, producing a pension worth roughly 70.6% of that salary average.² No matter how the math runs, the pension is capped at 80% of your salary average.

RetirementPlus

RetirementPlus is an enhanced formula available to members who retire with at least 30 years of total creditable service, at least 20 of which must be teaching service in the MTRS or the Boston Retirement System. Qualifying members get an added 2% for each year of service beyond a threshold (past 24 years for Tier 1, past 23 for Tier 2), which can push the pension percentage substantially higher. In exchange, you pay the 11% contribution rate on post-July-2001 service. If you elected in but never meet the 30-year and 20-year teaching requirements, your pension is calculated under the regular formula and you receive a refund of the extra contributions plus interest.⁷

Choosing a Payout Option

At retirement you pick one of three payout structures. The choice is permanent.

Option A (Maximum Allowance) pays the highest monthly benefit. All payments stop at your death. Nothing passes to a survivor.
Option B pays about 1 to 3% less per month than Option A. When you die, whatever balance remains in your annuity savings account is paid as a lump sum to any beneficiary you name, including multiple beneficiaries or a trust.
Option C pays about 9 to 11% less per month than Option A. When you die, a single named beneficiary receives a monthly lifetime survivor benefit equal to two-thirds of the retirement benefit you were receiving. The beneficiary must be a parent, child, sibling, spouse, or unmarried former spouse.²

Option A makes sense when no one else depends on the pension. Option C fits when a spouse or dependent will need continuing income after your death; the steeper monthly reduction can still be worth far more over a beneficiary’s lifetime than the lump sum available under Option B.

If You Become Disabled

If an injury or illness permanently keeps you from performing your job, you can apply for disability retirement. Massachusetts recognizes two types, and the difference in outcome is significant.

Ordinary disability covers non-job-related conditions. Your benefit is calculated as if you had retired at the normal age (55 for Tier 1, 60 for Tier 2) with the creditable service you actually have.⁸ For a younger teacher without many years in, the benefit can be modest.

Accidental disability applies when incapacity results directly from an injury sustained while performing your job duties. The pension equals 72% of your annual salary at the time of injury or 72% of your average salary over the last 12 months worked, whichever is greater. The total allowance is generally capped at 75% of the salary used in the calculation.

Either type requires that a three-member independent medical panel appointed by the Public Employee Retirement Administration Commission (PERAC) examine you and confirm the disability is permanent and prevents you from performing your essential job duties.⁸ The panel’s findings, not your treating physician’s, drive the decision.

What Your Survivors Receive

If you die while still an active member, Chapter 32, Section 12 provides two possible paths.

The first is Option D. If you named an eligible beneficiary on an Option D form before your death, that person receives a lifetime monthly allowance calculated as though you had retired under Option C. Eligible beneficiaries are a spouse, unmarried former spouse, parent, child, or sibling. A surviving spouse can elect to become the Option D beneficiary even if you originally named someone else, provided the spouse meets the eligibility rules.⁹

If no one qualifies for Option D, your named Section 11(2)(c) beneficiaries receive a lump-sum refund of your accumulated contributions. If you named no one, the refund goes to your surviving spouse.⁹ The two benefits are mutually exclusive; the Option D lifetime allowance does not come on top of the refund.

For retirees, what survivors receive is set entirely by the payout option (A, B, or C) chosen at retirement. This is why that once-and-done election matters so much.

Leaving Before Retirement

If you leave Massachusetts public education and do not plan to return, you can request a full refund of your contributions. Partial withdrawals are not allowed. You must be fully separated from service before applying, and the system must process the refund within 60 days of receiving your completed application.¹⁰

Interest depends on how you leave. Voluntary separation with 10 or more years of creditable service, or any involuntary termination, earns regular interest (a rate PERAC publishes annually). Voluntary separation with fewer than 10 years earns 3% interest. A direct refund triggers 20% federal tax withholding on the taxable portion and possible IRS early-withdrawal penalties; rolling the money into an eligible retirement account avoids the immediate tax hit.¹⁰

Taking a refund ends your membership. If you return later, your membership date resets to the day you come back, which can push you from Tier 1 into Tier 2. If there is any real chance you might return to teaching in Massachusetts, leaving the contributions in place preserves both your creditable service and your original tier.

Working After Retirement

Retired MTRS members can return to Massachusetts public-sector work, but within limits. You may work up to 1,200 hours per calendar year in any public-sector position.¹¹

There is also an earnings cap. Your post-retirement earnings in any calendar year cannot exceed the difference between the current salary of the position you retired from (or your salary average, whichever is greater) and your annual pension. After you have been retired for at least one full calendar year, the earnings limit increases by $15,000.²

If you return to the same employer you retired from, you must wait at least 60 days after your retirement date before starting work. That waiting period does not apply if you retired at age 62 or older or at the 80% maximum benefit. When the Department of Elementary and Secondary Education declares a critical shortage in a particular position, both the hour and earnings limits are waived after your first two years of retirement.²

Social Security After the Fairness Act

Massachusetts public school teachers generally do not pay Social Security taxes on their teaching salary. For decades, that meant two federal rules chipped away at any Social Security benefit you had earned elsewhere: the Windfall Elimination Provision (WEP), which reduced your own retirement benefit, and the Government Pension Offset (GPO), which reduced spousal or survivor benefits by two-thirds of your MTRS pension.¹²

The Social Security Fairness Act, signed on January 5, 2025, eliminated both WEP and GPO. The repeal is retroactive to January 2024, so the reductions no longer apply to benefits payable from that month forward. Beneficiaries who had been receiving reduced payments received a one-time lump sum covering the increase back to January 2024.¹³ If you previously skipped applying because you assumed GPO or WEP would wipe out your benefit, it is worth reopening that question. Retroactivity for a new application is generally limited to six months before the month you file.

Supplementing the Pension

The MTRS pension is a strong foundation, but it is not designed to replace your full working salary. Most retirees rely on additional savings to cover the gap. Massachusetts teachers can contribute to a 403(b), a tax-advantaged retirement account that works similarly to a private-sector 401(k), with pretax and after-tax options and age-based catch-up contributions.¹⁴¹⁵

Some Massachusetts public employees can also use a 457(b) deferred compensation plan through the state’s SMART Plan. A 457(b) has its own separate contribution limit, so if both plans are offered you can fund each in the same year. The 457(b) has a distinct advantage: after leaving your employer, you can withdraw funds at any age without the 10% early-withdrawal penalty that applies to 403(b) distributions before age 59½.¹⁶ Check with your district’s human resources office to see which plans are offered where you work; the closer you are to retirement, especially as a Tier 2 member, the more the supplemental savings decision matters.

1
Mass.gov. Overview of the Massachusetts Teachers’ Retirement System
2
Massachusetts Teachers’ Retirement System. Your MTRS Benefits Reference Guide August 2025
3
General Court of Massachusetts. Massachusetts General Laws Chapter 32 Section 2
4
General Court of Massachusetts. An Act Providing for Pension Reform and Benefit Modernization
5
Massachusetts Teachers’ Retirement System. Membership Tier 1 vs Membership Tier 2
6
General Court of Massachusetts. Massachusetts General Laws Chapter 32 Section 22
7
Massachusetts Teachers’ Retirement System. The Retirement Percentage Chart Membership Tier 1
8
Mass.gov. The Disability Retirement Application Process
9
Public Employee Retirement Administration Commission. Sections 12(2)(d) and 11(2)(c)
10
Mass.gov. Request a Refund of Your Retirement Contributions
11
Mass.gov. Post Retirement Work Update The Annual Limit Hours Increased to 1200
12
Social Security Administration. Government Pension Offset
13
Social Security Administration. Social Security Fairness Act Windfall Elimination Provision and Government Pension Offset
14
Massachusetts Department of Higher Education. About the 403(b) Savings Plan
15
IRS. Retirement Topics 403(b) Contribution Limits
16
Massachusetts Comptroller. Comparison of Key Features