Kentucky Teacher Retirement: Tiers, COLA, and Social Security

Kentucky teacher retirement runs through the Teachers’ Retirement System (TRS), a defined benefit pension covering public school teachers, administrators, and other staff in positions that require certification or a four-year degree. You vest after five years of Kentucky service, and the size of your pension and the age at which you can collect it depend on which of four membership tiers your hire date places you in. Kentucky does not offer teachers a standalone defined contribution plan in place of the pension, though the newest tier layers a voluntary supplemental savings account on top of the core benefit.

Which Tier You Belong To

Your hire date fixes your tier, and the tier fixes your multiplier, your earliest unreduced retirement date, and whether you receive a cost-of-living adjustment. Each newer tier is less generous than the one before it.

TRS 1: entered before July 1, 2002.
TRS 2: entered between July 1, 2002, and June 30, 2008.
TRS 3: entered between July 1, 2008, and December 31, 2021.
TRS 4: entered on or after January 1, 2022.

Two teachers with the same salary and the same years of service can walk away with noticeably different monthly checks purely because of when they were hired.¹

Membership is mandatory if you hold an eligible position. Classroom teachers, administrators, guidance counselors, librarians, and certified staff in public school districts all qualify, along with certain state agency and public university employees.²

How Your Pension Is Calculated

The formula is the same across TRS 1, 2, and 3: years of service credit, times a benefit multiplier, times your final average salary (usually the average of your five highest-earning years). Only the multiplier changes.

TRS 1 and TRS 2

Non-university TRS 1 members earn a 2.5% multiplier for every year of service. Thirty years at a $60,000 final average salary produces an annual pension of $45,000 (30 × 0.025 × $60,000). TRS 2 members start at 2% for the first ten years and move to 2.5% once they pass ten years, and the higher rate applies retroactively to all prior years. So a TRS 2 member with more than ten years effectively lands at the same 2.5% rate as TRS 1.¹

TRS 3

TRS 3 uses a graduated scale that rewards staying longer:

1 to 10 years: 1.7% per year
10 to 20 years: 2.0% per year
20 to 26 years: 2.3% per year
26 to 30 years: 2.5% per year

Each time you cross into a higher bracket, all your prior years convert to the new rate. Retire with 27 years and the 2.5% rate applies to all 27, not just the last one. Years past 30 use a 3% multiplier, subject to eligibility conditions.¹

TRS 4

TRS 4 is a hybrid. The foundational benefit is a defined benefit pension calculated the standard way. Alongside it, a supplemental savings account earns interest at a statutory rate credited each June 30; at retirement you can annuitize the balance or take it as a lump sum.³ TRS 4 also opens the door to a voluntary 403(b) where you can put in additional money; whether your district contributes anything to the 403(b) is up to the district.⁴

When You Can Retire Without a Penalty

The age and service you need for an unreduced benefit rise with each tier, and so does the penalty for going early.

TRS 1 and TRS 2

Unreduced retirement is available at age 60 with at least five years of service, or at any age once you reach 27 years. Early retirement starts at age 55 with five years, but the benefit is reduced by 5% for each year you fall short of either age 60 or 27 years, whichever produces the smaller penalty.¹

TRS 3

Unreduced retirement requires age 60 with at least ten years, or any age with 27 years. Early retirement begins at age 55 with ten years, and the reduction is 6% per year short of age 60 or 27 years of service, whichever is less.¹

TRS 4

The newest tier has the strictest rules. You qualify for an unreduced benefit at age 57 with 30 years, age 60 with 10 years, or age 65 with 5 years. Early retirement is available at age 57 with 10 years, with a 6% per year reduction based on whichever gap is smaller (below age 60 or below 30 years of service). The maximum early-retirement penalty is capped at 18%.⁴

What You Contribute From Each Paycheck

Non-university members who entered TRS before January 1, 2022, contribute 12.855% of salary. Of that, 9.105% funds the pension and 3.75% funds retiree health insurance through the Shared Responsibility program.⁵ University members pay less, with a 2.775% share going to retiree health.⁶ TRS 4 members contribute a portion of salary split between the foundational pension and the supplemental savings account.

Kentucky’s employee contribution rate sits on the higher end nationally, partly because most TRS-covered work is not covered by Social Security. No FICA is withheld from your teaching wages, and those wages do not build Social Security credits. University and community college employees are the main exception and typically participate in both systems.⁷

Cost-of-Living Adjustments

Retirees receive a 1.5% cost-of-living adjustment each July 1, provided they’ve been retired at least one full year. Retire partway through the fiscal year and the first COLA is prorated. Retire on January 1, for example, and you get 0.75% the following July.⁸

Two caveats matter. When the TRS pension fund is under 90% funded per the most recent actuarial valuation, the annual COLA drops to 0.75%. The reduced rate can apply for up to twelve years after retirement for newer retirees and through July 2030 for those already retired. And two groups get no COLA at all: members who entered on or after January 1, 2019, under a hybrid cash balance structure, and TRS 4 members.

Social Security After the Fairness Act

For years, two federal rules trimmed Social Security benefits for people who also collected a pension from non-Social Security employment. The Windfall Elimination Provision cut your own Social Security benefit, and the Government Pension Offset cut spousal and survivor benefits. Both were repealed by the Social Security Fairness Act, signed January 5, 2025, retroactive to benefits payable for January 2024 and later.⁹

If you earned Social Security credits from other work, a second career, or a spouse’s record, those benefits should no longer be reduced because you also draw a TRS pension. The Social Security Administration is issuing retroactive adjustments to retirees whose benefits were previously cut under WEP or GPO.

Health Insurance in Retirement

Active members help pre-fund retiree coverage through the Shared Responsibility program at the contribution percentages noted above. Once retired and eligible, you can participate in the Kentucky Employees’ Health Plan; the TRS subsidy toward your premium scales with your years of service, so longer careers mean smaller out-of-pocket costs. When you become Medicare-eligible, you move to the Medicare Eligible Health Plan. Subsidy amounts change, so verify the current figures with TRS as retirement approaches.⁶

If You Become Disabled or Die Before Retirement

Disability retirement requires at least five years of Kentucky service credit, that the disability arose during your most recent period of covered employment, and that you apply within one year of your last contributing service. Members with 27 or more years of service are not eligible because they already qualify for unreduced service retirement.¹⁰

The initial disability benefit is 60% of final average salary, paid during an entitlement period of up to five years (one year of entitlement per four years of service, with a five-year minimum for anyone who qualifies). You continue accruing service credit during that period. When it ends, your benefit is recalculated using the regular service retirement formula, combining pre-disability and disability-period service. You remain classified as a disability retiree and must submit to periodic medical exams.¹¹

If a member dies before retirement, KRS 161.520 governs survivor benefits. A surviving spouse of a member with at least ten years of service credit can apply for a monthly benefit. When the member had fewer than ten years, survivors may instead be eligible for a refund of accumulated contributions.¹²

Going Back to Work After You Retire

Returning to a TRS-covered job triggers waiting periods that TRS enforces strictly. For members who retired on or after January 1, 2020:

Part-time work: three calendar months from your retirement date.
Full-time work with the same employer: twelve consecutive calendar months.
Full-time work with a different employer: three calendar months.

Come back before the break-in-service period is up and your retirement is voided. This is not the kind of rule that gets waived.¹³

At non-university employers, part-time work is capped at 12 semester hours in a teaching role or 100 days in a non-teaching role per fiscal year, with no wage limit. Full-time return to a non-university employer has no hour or wage cap. University employers apply a daily wage threshold and cap part-time at 69% of a regular full-time contract; full-time return to a university employer requires advance TRS approval. Any new TRS-covered work generates contributions into a separate account, and your original pension continues unaffected.¹⁴

How Your Benefit Is Taxed

TRS retirement income is fully taxable at the federal level. Kentucky treats it more gently. Under KRS 161.700, benefits accruing after January 1, 1998, are subject to Kentucky income tax, but the state allows a pension income exclusion.¹⁵ For the 2025 tax year the exclusion is $31,110 per return, so a pension at or below that amount owes no Kentucky income tax. Anything above is taxed at the regular rate.¹⁶

Withdrawals from a TRS 4 supplemental 403(b) follow their own rules. Pre-tax contributions and their earnings are fully taxable when withdrawn. After-tax contributions come out tax-free, but their earnings are taxable.

Legal Protection, and Its Limits

KRS 161.714 makes TRS benefits an inviolable contract: they “shall not be subject to reduction or impairment by alteration, amendment, or repeal.”¹⁷ Benefits are also exempt from garnishment, attachment, and assignment under KRS 161.700, though qualified domestic relations orders in divorce can divide them between spouses.¹⁵

That protection covers what you’ve already earned. It does not stop the legislature from changing the deal for people not yet hired, which is exactly how TRS 3 and TRS 4 came into being: lower multipliers, higher retirement ages, tighter service floors. If you’re currently in the system and vested, the rules under your tier are yours. New hires should expect to be in a different tier with different math.

1
Teachers’ Retirement System of the State of Kentucky. TRS 1, TRS 2 and TRS 3 Service Retirement
2
Kentucky Legislative Research Commission. Kentucky Revised Statutes – Chapter 161
3
Teachers’ Retirement System of the State of Kentucky. TRS 4 Service Retirement
4
Teachers’ Retirement System of the State of Kentucky. TRS 4 Summary Plan Description
5
Kentucky Legislative Research Commission. Kentucky Revised Statutes 161.540 – Members Contributions Picked-up Contributions
6
Teachers’ Retirement System Kentucky. What is Shared Responsibility
7
Teachers’ Retirement System Kentucky. TRS and Social Security
8
Teachers’ Retirement System Kentucky. Cost-of-Living Adjustments
9
Social Security Administration. Social Security Fairness Act – Windfall Elimination Provision and Government Pension Offset Update
10
Justia. Kentucky Code 161 – Section 161.661 Disability Retirement
11
Teachers’ Retirement System of the State of Kentucky. TRS 1, TRS 2 and TRS 3 Disability Retirement
12
Kentucky Legislative Research Commission. Kentucky Revised Statutes 161.520 – Payment of Survivors Benefit on Death
13
Teachers’ Retirement System of the State of Kentucky. Options for Retirees Returning to Work
14
Justia. Kentucky Code 161 – Section 161.605 Resumption of Employment by Retired Member
15
Kentucky Legislative Research Commission. Kentucky Revised Statutes 161.700 – Funds Exempt From Taxation and Process
16
Kentucky Department of Revenue. Schedule P 2025
17
Kentucky Legislative Research Commission. Kentucky Revised Statutes 161.714 – Inviolable Contract