Public Pension Calculator

Best Day to Retire from CalPERS

A small calendar choice can be worth thousands

Picking a retirement date is not just about reaching a milestone age — five separate calendar mechanics affect how much you actually walk away with. None of them are exotic. They're all in the CalPERS rules; they're just easy to miss until it's too late to act on them. This guide walks through each.

1. COLA Timing — Retire Before April for the May Bump

CalPERS pays its annual cost-of-living adjustment each May, based on the prior calendar year's CPI. Retirees who have been retired for at least one full year qualify for the next May's COLA. Practically, this means a retirement date before April 1 generally qualifies you for the COLA paid the following May. Push past April 1 and you wait an extra year for your first cost-of-living bump — a 12-month delay on every COLA payment for the rest of your retirement.

2. Quarter-Year Age Factor Cliffs

Benefit factors increase at quarter-year age increments — for example, your factor at 55.00 is lower than at 55.25, which is lower than at 55.50. The jumps are small (often 0.05 to 0.1 percentage points), but they multiply by every year of service and every month of your retirement. Retiring three months later can be worth $50 to $200 more per month for a typical 25-year pension — for life. Always check the benefit factor table to see where your next factor bump falls.

3. Payroll Cycle and First-Month Proration

CalPERS pays pensions on the first business day of each month for the prior month's benefit. Retiring mid-month results in a prorated first payment. If timing flexibility is available, retiring on the last day of a month minimizes proration and may also let you pick up one final paycheck and one more day of service credit before the new pension month begins.

4. Leave Cashout and Final Compensation

Some unused leave balances (e.g., vacation, annual leave) may be cashed out at retirement. Cashout treatment varies by employer and CalPERS class — certain cashouts count as pensionable compensation that can raise your final compensation average, while others do not. PEPRA rules generally restrict this more than Classic rules. Confirm with your HR/benefits office well before your target retirement date whether your specific leave cashout will affect your final compensation calculation.

5. Fiscal-Year Timing and Step Increases

If your employer grants step or merit increases at a predictable point in the fiscal year, retiring just after that raise has been on the books long enough to land in your highest-12-month (Classic) or highest-36-month (PEPRA) average is meaningful. Even a 3% step increase compounded into your final compensation period feeds directly into your pension formula and persists for the rest of your retirement.

Putting It Together

A planned retirement window — say "sometime in 2026" — usually has several candidate dates. The best candidate is often: the last business day of March (or early April), after a quarter-year age tick, after a recent step increase has fully landed in your final compensation period, with leave cashout pre-confirmed with HR. That single date is worth checking before you submit your retirement paperwork.

Best Day to Retire — Frequently Asked Questions

What is a benefit factor quarter-year cliff?▾
CalPERS benefit factors increase at quarter-year increments. Retiring three months later (e.g., at 55.25 vs 55.00) can raise your benefit factor by a small but non-trivial amount. Multiplied across your full years of service and decades of retirement, this can amount to thousands of dollars. The free CalPERS calculator on this site shows your exact factor at any quarter-year age.
What are Local Miscellaneous and Local Safety formulas?▾
Local Miscellaneous formulas apply to non-safety employees of cities, counties, and special districts that contract with CalPERS. Local Safety formulas apply to law enforcement, firefighters, and other safety employees of local agencies. Safety formulas typically have higher benefit factors and earlier retirement ages.
Does CalPERS affect my Social Security benefits?▾
Some CalPERS formulas are Social Security covered, meaning you pay into both CalPERS and Social Security. Others are not covered, meaning you do not pay Social Security taxes and may be subject to the Windfall Elimination Provision (WEP) if you have Social Security credits from other employment.
Am I in CalSTRS or CalPERS?▾
If you are a certificated K-12 teacher, community college instructor, or certain administrator, you are likely a CalSTRS member. Most other California public employees — including school classified staff, state workers, and city/county employees — are CalPERS members. Some careers (e.g., switching from teaching to administration) may build credit in both systems; reciprocity rules then apply at retirement.
What is the difference between CalSTRS and CalPERS?▾
CalSTRS (California State Teachers' Retirement System) covers certificated K-12 teachers, community college instructors, and some administrators. CalPERS (California Public Employees' Retirement System) covers state, school, and local public agency employees. Teachers may have benefits from both systems depending on their career.
What is the minimum retirement age?▾
The minimum retirement age varies by formula. Most PEPRA formulas allow retirement at age 52, while classic formulas may allow retirement as early as age 50. Your benefit factor at the minimum age is typically much lower than at the reference age.

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Disclaimer:COLA timing, leave cashout, and pensionable-compensation rules change over time and vary by employer agreement. Confirm specifics with CalPERS and your employer's benefits office before locking in a retirement date.