Updated September 3, 2026. Quick answer: Massachusetts Teachers’ Retirement System (MTRS): the COLA is discretionary (granted by legislative vote) and is applied to a fixed $13,000 base, not compounded, service credit can be purchased, and no DROP was found. Vesting takes 10 years of creditable service.
More on public pension systems, topic by topic: Massachusetts retirement late entry and make-up payments, Massachusetts retirement repaying withdrawn deductions and Massachusetts pension after leaving service.
Provisional. This page is published at medium confidence. The specific points that could not be confirmed are listed under What could not be verified below, and are named rather than smoothed over.
The verdicts
| Is the COLA granted? | Discretionary (Legislature votes each cycle) |
|---|---|
| Is the COLA compounded? | Not compounded (fixed $13,000 base) |
| Vesting | 10 years of creditable service |
| Buy service credit? | Yes |
| DROP? | None found |
| State | Massachusetts |
Those first two rows are separate questions and are routinely confused. Whether you get an increase at all is one thing; whether it compounds is another. A system can grant an increase automatically every year and still compute it against your original benefit forever, which is a materially worse deal than it sounds.
The COLA
“Cost-of-living adjustments are granted to MTRS benefit recipients by vote of the Massachusetts Legislature.” The base never grows: “the retirement base on which a COLA is granted is $13,000. Accordingly, if the Legislature grants a 3% COLA effective July 1, a benefit recipient may have his or her allowance increased by a maximum of $390 per year, or $32.50 per month.” The FY2027 grant matched that structure: “an increase of three percent on the first $13,000 of your retirement benefit, for a maximum increase of $390 per year or $32.50 per month (3% x $13,000/year = $390/year; $390/year ÷ 12 months = $32.50/month).”
Buying service credit
MTRS members can purchase military service during membership (generally up to 4 years, no interest on the first invoice), other Massachusetts public service (up to 20 years, actuarial interest currently 7.0%), a full refund buyback of previously refunded MTRS service (no cap, 7.0% interest), and out-of-state teaching (up to 10 years, buyback interest currently 3.5%).
Run your own numbers before deciding: some purchases never recover their cost, and the calculator shows which.
Coordinate this with your overall retirement plan
An adviser can help weigh a COLA that may not compound, a service-credit purchase that may never pay for itself, or a DROP election against the rest of your retirement plan, but that does not replace the numbers in your own member statement.
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Vesting
mass.gov itself returned HTTP 403 on every path tried this session; MTRS’s own official state domain, mtrs.state.ma.us, was used instead. MTRS’s tier comparison chart gives retirement eligibility (the closest stated threshold, not a standalone vesting definition) as: Tier 1 (enrolled before April 2, 2012) may retire with 20 years of creditable service at any age, or at age 55 with 10 years of creditable service; Tier 2 (enrolled on or after April 2, 2012) may retire at age 60 with at least 10 years of creditable service. Both tiers share a 10-year floor, which this page reports as the vesting figure; a single standalone “you vest at 10 years” sentence was not found and this number is inferred from that shared floor.
DROP
No DROP program appears in the MTRS pages reviewed. Two related PDFs (ch71ssv1.pdf, dros.pdf) could not be text-extracted this session, so this is an absence-of-evidence finding against the pages that could be read, not a full document-by-document denial.
DROP is rarer than it appears across the systems on this site: most have none.
Retirement payment options A, B and C
The statute that governs how a Massachusetts teacher’s allowance is paid is M.G.L. c. 32, section 12, headed “Options on retirement”. It says a retiring member “may elect to have his allowance paid in accordance with the terms of any one of the three options” it specifies. Those are Option (a), Option (b) and Option (c). The section also lists an Option (d) for a member who dies before being retired, which is a different situation from the retirement choice and is not covered here.
Option (a) is titled “Life Annuity” and pays “A full retirement allowance payable to such member”. Option (b), “Cash Refund Annuity”, pays “A lesser retirement allowance payable to such member”. Under it, “if such member dies before receiving in annuity payments a total amount equal to such value of such accumulated total deductions, the excess of such value over such total amount shall be paid in one sum” to the surviving beneficiary or beneficiaries. In plain terms, Option (b) trades some monthly income for a guarantee that the member’s own contributions are not lost if death comes early. Option (a) has no such clause in the text read.
Option (c) is titled “Joint and Last Survivor Allowance”. It also starts from “A lesser retirement allowance”, with the provision that “two-thirds of the yearly amount of such lesser retirement allowance shall be continued during the lifetime of and paid to such surviving eligible beneficiary” the member named. If the named beneficiary dies first, the statute says “such member thereafter shall be paid a full retirement allowance and may not choose another option”. The eligible beneficiaries listed include the spouse, a former spouse who has not remarried, and a “child, father, mother, sister or brother of such member”. For the general single-life versus survivor trade-off, see single life versus joint and survivor pension.
A computed example shows the two-thirds rule. This is a computed example from an assumed $36,000 lesser yearly allowance, not an MTRS figure. The statute’s survivor share is two-thirds of the lesser allowance, so the computed survivor amount is $36,000 x 2 / 3 = $24,000 per year. The statute defines the reduction from the full Option (a) amount to the lesser amount only as an actuarial equivalence, so the lesser allowance itself cannot be computed from the pages read.
The mechanics of filing are in the same section. It says “Election of an option shall be made by such member in writing on a prescribed form filed with the board”, and that an election “once made may be changed from time to time by making a new election in a similar manner”. Filing windows apply: the statute says “no election of an option shall be valid unless such election is filed with the board on or before the date of receipt by the board of the written application for the retirement of such member”, with listed alternatives, including filing not more than fifteen days after the board receives an application made by a department head, and filing on or before the date the allowance becomes effective. If a member makes no election, the statute says the allowance “shall be paid in accordance with the terms of option (b)”.
Married members face an added requirement. The statute says “an election shall not be valid unless it is accompanied by the signature of the member” and then names the spouse as the signer. The board is to notify the spouse by registered mail within fifteen days if an election arrives unsigned, and the statute sets a thirty day response period. For the general consent rules, see spousal consent to waive a joint and survivor annuity.
| Item | Figure | Where it is stated |
|---|---|---|
| Number of retirement options in the retirement choice | three | M.G.L. c. 32, section 12 |
| Survivor share under Option (c) | two-thirds | M.G.L. c. 32, section 12 |
| Days for the board to notify a spouse of an unsigned election | fifteen days | M.G.L. c. 32, section 12 |
| Spouse response period | thirty days | M.G.L. c. 32, section 12 |
| Default if no option is elected | Option (b) | M.G.L. c. 32, section 12 |
What the pages read do not state: the dollar amount by which Option (b) or Option (c) reduces an allowance, the actuarial factors used, or any MTRS explanation of the options beyond the statute text. MTRS is the place to ask for an estimate under each option.
Sources for this section:
- Massachusetts Teachers’ Retirement System, mtrs.state.ma.us refund: https://mtrs.state.ma.us/refund/
- Massachusetts Teachers’ Retirement System, malegislature.gov Section12: https://malegislature.gov/Laws/GeneralLaws/PartI/TitleIV/Chapter32/Section12
Taking a refund of your MTRS contributions
MTRS’s page on withdrawing funds sets out the refund terms. It says “While you are an active member of the MTRS, you are not eligible to withdraw any portion of your account balance.” It adds that “once you leave service and become an inactive member, you have the option to withdraw your funds”. A refund cannot be partial: “we cannot give you a partial refund”. On timing, MTRS asks members: “Please allow 60 days from the date we receive your completed application” for processing. The application has two parts, one completed by the member and one by the most recent former employer.
What a refund gives up matters most. MTRS says that when you take one, “Your membership in the MTRS ends and you give up the service represented by the funds in your account as well as any benefit right based on that service credit.” A member who returns to Massachusetts public service later “will be considered a new employee” and “will not be entitled to the creditable service you previously accumulated unless you choose to repay your refund, plus interest”. For the general comparison, see pension refund versus leaving it.
Interest is not always paid in full. For members with an effective membership date on or after January 1, 1984 who resign voluntarily with less than ten years of creditable service, MTRS says “you will receive interest at the rate of 3% on your accumulated total deductions”. With ten or more years, the member receives interest at the regular credited rate. A separate rule applies to delay: “if you apply for a refund more than two years after the date of your termination of service, you are eligible to receive the interest accumulated only for the two years immediately following that date”.
Leaving the money in place is the alternative. MTRS says a member with at least 10 years of creditable service who leaves service below the retirement age for the membership date may leave funds on account until age 55 for those enrolled before April 2, 2012, or age 60 for those enrolled on or after that date. A time limit still applies: “must send you a refund of your account no later than April 1 of the year after the year in which you turn age 72”.
Taxes follow the type of contribution. MTRS says that for a total refund paid directly to the member, “by law, we must withhold 20% of the pre-tax amount for federal taxes”, and adds that “your refund is subject to a 10 percent income tax penalty” in many cases for members younger than age 59 and a half, which MTRS does not withhold. A direct rollover avoids the 20% withholding on the amount rolled over. See the 20 percent withholding page. MTRS’s tax table lists Massachusetts as not taxing any of the categories shown and the federal government as taxing contributions made after January 1988 and all interest.
A computed example follows. This is a computed example from an assumed $10,000 pre-tax refund, not an MTRS figure. The computed 20% withholding is $10,000 x 20 / 100 = $2,000, leaving a computed $8,000 paid directly, before any penalty or final tax owed.
| Item | Figure | Where MTRS states it |
|---|---|---|
| Processing time after a completed application | 60 days | MTRS withdrawing your funds page |
| Federal withholding on a pre-tax direct payment | 20% | MTRS withdrawing your funds page |
| Interest rate for a voluntary resignation under ten years | 3% | MTRS withdrawing your funds page |
| Interest paid after a late refund application | two years | MTRS withdrawing your funds page |
| Latest refund date after turning age 72 | April 1 of the next year | MTRS withdrawing your funds page |
What the pages read do not state: the interest rate credited to accounts in a given year, or the amount in any particular member’s account. MTRS directs members to the annual account statement and to its office for an estimate.
Sources for this section:
- Massachusetts Teachers’ Retirement System, mtrs.state.ma.us refund: https://mtrs.state.ma.us/refund/
- Massachusetts Teachers’ Retirement System, malegislature.gov Section12: https://malegislature.gov/Laws/GeneralLaws/PartI/TitleIV/Chapter32/Section12
What could not be verified
REFUND TERMS: this page does not state what happens to your contributions if you take a refund instead of leaving your account with the system: that comparison was not independently researched for this system this session, and is left as an open gap rather than guessed from another system’s rule. Consult your own plan’s refund/forfeiture terms before deciding. Any additional field marked “not stated” in the verdicts table above was genuinely absent from the official materials read, not omitted for space.
Sources
- MTRS creditable service
- MTRS membership tier chart
- MTRS pre-retirement issues
- MTRS FY2027 COLA approved
Read September 3, 2026.
Related public pension systems: Minnesota PERA · Minnesota TRA.
General information drawn from each system’s own official published materials, not legal, tax or financial advice. Vesting, COLA and buyback rules are set by state statute and plan tier, differ materially by hire date, and can change by future legislation. This page cannot see your own member statement, which governs. We are not a law firm, a tax adviser, or a fiduciary, and this is not personalized advice.
Comparing plans across states or systems? New Jersey PERS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? New Mexico ERB: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? New Mexico PERA: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? North Carolina TSERS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? Oklahoma OPERS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? Oregon PERS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? South Carolina SCRS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? Tennessee TCRS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? Oklahoma TRS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.
Comparing plans across states or systems? Virginia VRS: COLA, Vesting, Buyback and DROP answers the same COLA, vesting and buyback questions for that pension.