PERS and Alaska State Benefits, Explained

Here's the fact that reframes every State of Alaska job offer: most state employees don't pay into Social Security. Alaska opted out in 1980. In exchange, the state runs its own stack — PERS retirement plus a mandatory savings plan called SBS — and whether that trade is good for you depends on details almost nobody explains plainly. This is the plain explanation.

The three-letter words

• PERS — the Public Employees' Retirement System, Alaska's retirement plan for state and many municipal employees, administered by the Division of Retirement and Benefits (DRB).
• SBS — the Supplemental Benefit System, the thing that replaces Social Security: a mandatory defined-contribution account funded by roughly 6.13% of your wages plus an equal match from the employer.
• TRS — the parallel system for teachers; different plan, same administrator, out of scope here.

Tiers: which PERS you get is set by your hire date

PERS has four tiers, and your tier is locked by when you first entered covered employment:

• Tiers I–III (first hired before July 1, 2006) — traditional defined-benefit pensions: you contribute 6.75% of pay (general employees), and retirement pays a guaranteed lifetime benefit computed from your salary and years of service. These tiers closed to new members two decades ago.
• Tier IV (first hired on or after July 1, 2006) — a defined-contribution plan (the "DCR" plan): you contribute 8% of pay, the employer adds 5% to your individual account, you choose the investments, and the balance is what you retire on. Every new hire today is Tier IV.

The practical difference: a DB pension transfers longevity risk to the state — work a career, get a check for life. Tier IV transfers it to you — your account is real money you own and can roll over, but nothing is guaranteed. For a mobile professional who may work in Alaska five years, Tier IV's portability is genuinely valuable; for a 30-year lifer, the old pension was the better deal, which is why its closure remains a live political fight: the Legislature passed a DB-restoration bill (HB 78) in April 2026, and it died that May on a sustained gubernatorial veto. Expect the debate to return.

Vesting: the five-year clock

Your own contributions — the 8%, and all of SBS — are always yours. The employer's Tier IV contributions vest on a graded schedule — nothing before two years of service, then 25% at two years, 50% at three, 75% at four, 100% at five; leave early and you forfeit the unvested share. If you're weighing a departure around a service anniversary, the vesting schedule is worth real money — check your exact date with DRB before giving notice.

SBS: the quiet 12%

Because most state employees are outside Social Security, no 6.2% FICA comes out of your check. Instead, about 6.13% goes to SBS and the employer matches it — roughly 12.26% of wages (up to the Social Security wage base) accumulating in an account you own, vested immediately. Over a career this is a serious asset, and it's the piece job-changers most often forget they have. One consequence worth knowing: since the Social Security Fairness Act passed in January 2025, the old penalty (the Windfall Elimination Provision) that reduced Social Security earned from other jobs no longer applies — a real improvement for anyone mixing Alaska state service with private-sector years.

The rest of the stack

• Health insurance — AlaskaCare medical/dental/vision for employees; premiums and plan tiers set in bargaining. Retiree medical exists in all tiers but works very differently (DB tiers carry system-paid retiree coverage; Tier IV builds a health reimbursement arrangement and earns retiree medical access with service).
• Leave — most positions accrue combined personal leave that grows with service, plus 11–12 paid holidays.
• Deferred comp — an optional 457(b) on top of everything above, for aggressive savers.

How to weigh an offer, in one paragraph

Take the posted salary (calculator, with your duty station's differential), then remember the benefits math: 8% of your pay goes to your own retirement account and is matched at 5%, another ~6.13% is matched dollar-for-dollar in SBS, and no Social Security tax comes out. A state offer that looks 10% below a private one can net out ahead once the ~11% of employer-side retirement money and the FICA difference are counted — and that's before health premiums are compared. Run the arithmetic, not the sticker.

Rates cited are the general-employee rates; peace officers and firefighters contribute more and retire earlier. Authoritative details, plan booklets, and your personal tier: the Alaska Division of Retirement and Benefits. This guide is orientation, not benefits counseling.

Quick answers

Do State of Alaska employees pay Social Security?

Most do not. The State of Alaska opted out of Social Security in 1980; in its place, state employees get the Alaska Supplemental Benefit System (SBS) — a mandatory defined-contribution plan where roughly 6.13% of wages from the employee and a matching amount from the state go into an individual account — on top of PERS retirement.

What PERS tier am I in?

Your PERS tier is set by your first entry into Alaska Public Employees' Retirement System service: Tier I before July 1, 1986; Tier II from July 1, 1986; Tier III from July 1, 1996; and Tier IV — the defined-contribution plan — for everyone first hired on or after July 1, 2006. All new State of Alaska hires today are Tier IV.

Is PERS Tier IV a pension?

No — PERS Tier IV is a defined-contribution plan, not a traditional pension. You contribute 8% of pay, the employer contributes 5% to your individual account, and the balance is yours to invest and take with you. Tiers I–III (closed to new members since 2006) are defined-benefit pensions with a guaranteed lifetime payment.

What happens to my PERS if I leave state employment early?

Your own contributions are always yours. In PERS Tier IV, the employer's contributions vest on a schedule during your first five years of service — leave before fully vesting and you forfeit the unvested employer share, while your 8% and its earnings go with you (rollover-eligible).