CalPERS works as a defined benefit pension: the California Public Employees’ Retirement System promises eligible public workers a guaranteed monthly check for life, calculated by a formula rather than by how well investments perform. Your paycheck contributes a fixed percentage, your employer contributes whatever the actuaries say is needed, and investment returns cover most of the rest. When you retire, you receive a monthly amount based on three numbers: your years of service, an age-based benefit factor, and your final salary. Established in 1932 and now covering roughly 2 million members, it is the largest public pension fund in the United States.1CalPERS. Trivia Time: Get Schooled on Your CalPERS Benefits
The tradeoff compared with a 401(k) is straightforward. You do not choose investments, and your payout will not grow beyond the formula. In exchange, market crashes do not touch your retirement income.
Who Is Covered
CalPERS covers state employees, non-teaching school staff, and employees of cities, counties, and special districts that have contracted with the system. Enrollment is automatic when you are hired into a covered position; there is no opt-in. Teachers are generally covered by CalSTRS, a separate California system, not CalPERS.
Classic vs. PEPRA: Which Rules Apply to You
Every member sits in one of two categories, and the label follows you for your whole career. Join before January 1, 2013, and you are a “Classic” member. Join on or after that date without prior service in a California public retirement system and you are a “PEPRA” member, governed by the Public Employees’ Pension Reform Act of 2013.2CalPERS. State Reference Guide – Section: Public Employees’ Pension Reform Act (PEPRA) of 2013
The distinction drives your minimum retirement age, your benefit factor schedule, how final compensation is averaged, and whether a pay cap applies. Classic members generally have more generous terms. PEPRA raised the retirement age and capped pensionable salary to reduce long-term costs.
Edge cases exist. If you were a member before 2013, separated for more than six months, and later took a job with a different CalPERS employer, you may land in PEPRA. Returning to the same employer, or moving between reciprocal California public systems, can preserve Classic status. Your myCalPERS account shows your classification.2CalPERS. State Reference Guide – Section: Public Employees’ Pension Reform Act (PEPRA) of 2013
How the Money Comes In
Three revenue streams fund the system: investment returns, employee contributions, and employer contributions. Historically, investment earnings account for the largest share.
Your contribution is a fixed percentage of pay. PEPRA members must pay at least half the normal cost of the benefit; for the 2025–26 fiscal year, the rate is 8% for PEPRA school employees.3CalPERS. 2025-26 School Employer and Employee Contribution Rates Classic rates vary by bargaining unit and employer but tend to fall in a similar range.
Employer contributions shift every year based on actuarial valuations that compare the fund’s assets against its projected obligations. Weak investment years push employer rates up. Strong years ease them. Under California Government Code Section 20814 and related provisions, employers must pay whatever the CalPERS board sets.4Justia. California Code Government Code Chapter 9 – Employer Contributions Investment risk sits with the fund and the employer, not with you.
How Your Monthly Pension Is Calculated
The formula multiplies three numbers: service credit, your benefit factor, and your final compensation. Change any one and your pension changes.
Service Credit
Service credit is the time your employer reports to CalPERS, measured in years, months, and partial months. A year of full-time work earns a year of credit. Part-time work earns proportional credit.
Benefit Factor
The benefit factor is the percentage of pay you earn for each year of service, and it rises with your age at retirement. Your specific schedule depends on your employer contract and whether you are Classic or PEPRA.
For Classic local miscellaneous members under the 2% at 55 formula, the factor starts around 1.43% at the minimum retirement age of 50, hits 2% at 55, and tops out at 2.418% at age 63 or older.5CalPERS. Retirement Formulas and Benefit Factors – 2% at 55 For PEPRA miscellaneous members under the 2% at 62 formula, the minimum age is 52 with a factor of just 1%, reaches the named 2% at 62, and maxes at 2.5% at 67.6CalPERS. Retirement Formulas and Benefit Factors – 2% at 62 Retiring at the earliest possible age produces a much smaller check under PEPRA than under a Classic formula.
Safety members (police, firefighters, correctional officers) have their own formula schedules with different age thresholds.
Final Compensation and the PEPRA Pay Cap
Final compensation is your highest average annual pay during a consecutive period of employment. Classic members often use a 12-month period. PEPRA members use a 36-month average.7CalPERS. Your CalPERS Benefits: Planning Your Service Retirement (PUB 1) The longer window blunts “pension spiking,” where a late-career raise or overtime bump inflates a pension.
PEPRA also caps the salary that can count toward your pension. For 2026, the pensionable compensation limit is $159,733 for members who participate in Social Security and $191,679 for those who do not.8CalPERS. 2026 Compensation Limits for Classic and PEPRA Members Anything above the cap does not count. Classic members are not subject to that PEPRA cap, though a separate IRS limit under Section 401(a)(17) applies at a much higher threshold.
A Worked Example
Say you are a PEPRA miscellaneous member retiring at 62 with 25 years of service and a three-year average salary of $100,000. Your benefit factor is 2.0%. The math: 25 × 2.0% × $100,000 = $50,000 a year, or about $4,167 a month before taxes. Wait until 67 and the factor climbs to 2.5%, producing $62,500 a year for the same 25 years of service.6CalPERS. Retirement Formulas and Benefit Factors – 2% at 62 Five extra years of work translates to a 25% larger check for the rest of your life.
When Your Benefit Becomes Permanent
You are vested once you accumulate five years of CalPERS service credit. State of California Second Tier members need 10 years.9CalPERS. CalPERS 101: Your Pension and the Vesting System After vesting, you can leave public work and still collect a monthly pension when you reach your minimum retirement age, even years later.
Leave before vesting and you cannot collect a lifetime benefit. You can request a refund of the contributions you personally paid plus credited interest.10CalPERS. Refund Member Contributions Taking the refund cancels all your service credit and membership. If there is any chance you return to a covered job, leaving the money in place is usually smarter. Rebuilding lost credit later is expensive and sometimes not possible.
Cost-of-Living Adjustments in Retirement
Your pension does not stay frozen once payments begin. CalPERS applies an annual cost-of-living adjustment, but the ceiling depends on your employer contract and retirement tier. School retirees and First-Tier State of California retirees are capped at 2%. Second-Tier State retirees receive a fixed 3%. Local public agencies can contract for caps of 2%, 3%, 4%, or 5%.11CalPERS PERSpective. About Your COLA and Inflation
Each year you receive the lesser of the change in the Consumer Price Index (U.S. City Average) or your contracted cap. In a year with 4% inflation and a 2% cap, you get 2%. In a year with 1% inflation and a 2% cap, you get 1%. Adjustments compound, so a 2% cap adds up over a long retirement. In high-inflation stretches, though, a low cap means real purchasing power slips.
Choosing How Your Pension Pays After You Die
When you file for retirement, you also choose the payment structure. The decision is one-time and irrevocable.12CalPERS. Curious About CalPERS Retirement Payment Options
The Unmodified Allowance pays the highest monthly amount but leaves no ongoing benefit when you die. Option 1 pays slightly less and returns any remaining personal contributions to your beneficiary as a lump sum. Option 2 cuts your monthly payment more significantly but continues 100% of that reduced amount to your beneficiary for life; Option 3 cuts it less and pays your beneficiary 50%. Both 2 and 3 come in “allowance increase” variants that restore your payment to the Unmodified amount if your beneficiary dies before you. A Flexible Beneficiary option lets you set a custom dollar amount or percentage.
The size of the reduction depends on your age and your beneficiary’s age. Naming a much younger spouse means a larger reduction than naming a spouse close in age. Personalized estimates are available through myCalPERS.
Retiree Health Benefits: A Separate System With a Tight Deadline
CalPERS also administers a retiree health benefit program, but it is not part of your pension and not everyone qualifies. To enroll, you must retire within 120 days of separating from your job, receive a monthly pension, and have been eligible for health coverage when you separated. Your former employer must also contract with CalPERS for retiree health benefits for your bargaining unit.13CalPERS. Eligibility and Enrollment (Retirees) Miss the 120-day window and you can permanently lose eligibility.
Even if you qualify, how much your employer pays toward your premiums follows a separate health vesting schedule. Most state employees fall under either a 20-year or 25-year schedule. Under the 20-year schedule, 10 years of credited service gets the employer paying 50% of its contribution, rising 5% per additional year, reaching 100% at 20 years. The 25-year schedule requires 15 years for 50% and reaches full coverage at 25 years.14CalPERS PERSpective. Health Vesting 101
Taxes on Your Pension
Your monthly CalPERS pension is ordinary income for both federal and California state income tax.15CalPERS PERSpective. Taxes and Your Pension CalPERS withholds automatically unless you submit an election. The default is single filing status with no adjustments, which often over-withholds if you are married or have other deductions. A tax statement arrives each January.16CalPERS PERSpective. What Retirees Need to Know for 2026
If you move out of California after retiring, federal tax still applies, but California generally cannot tax pension income paid to nonresidents. Update your withholding elections after any move to avoid unnecessary state tax withholding.
How CalPERS Interacts With Social Security
Whether you also collect Social Security depends on your employer. Some CalPERS-covered positions pay into Social Security and some do not. State employees generally do not pay Social Security taxes on their CalPERS-covered earnings; many local agency employees do.
Two federal provisions used to reduce Social Security benefits for public pensioners. The Windfall Elimination Provision cut your own Social Security benefit if you received a pension from work not covered by Social Security. The Government Pension Offset cut Social Security spousal or survivor benefits by two-thirds of your government pension. The Social Security Fairness Act, signed on January 5, 2025, eliminated both.17Social Security Administration. Government Pension Offset18Social Security Administration. Program Explainer: Windfall Elimination Provision The repeal applies to benefits payable for months after December 2023, and the Social Security Administration is recalculating benefits for retirees whose payments were previously reduced.