Short answer
CalSTRS vesting requires 5 years of service credit under both the classic and PEPRA structures. Once vested, you're guaranteed a future monthly benefit even if you stop teaching, though you generally can't collect it until you also meet the age requirement. If you leave before vesting, your main option is a refund of your own contributions plus interest — which permanently forfeits any future CalSTRS benefit.Quick facts
- Vesting threshold: 5 years of service credit, same for both benefit structures
- Vesting age-eligibility are two separate milestones — vesting doesn't mean you can retire yet
- Leaving before vesting means a refund of contributions, not a pension
The 5-year threshold applies to both structures
Unlike some of the eligibility differences between CalSTRS 2% at 60 and CalSTRS 2% at 62 (PEPRA), vesting is identical: 5 years of service credit vests you for a future monthly retirement benefit under either structure. Vesting is a service-credit milestone, not an age milestone — you can reach it at any age depending on when you started teaching and how continuously you've worked.
Being vested means CalSTRS owes you a future benefit based on the service you've already earned, even if you never work another day in a CalSTRS-covered position. It does not mean you can start collecting that benefit immediately; you still need to reach the applicable minimum retirement age under your structure (see the companion guide on CalSTRS retirement eligibility) before payments begin.
What happens if you leave before vesting
If you stop CalSTRS-covered employment with fewer than 5 years of service credit, you do not qualify for a future monthly benefit under current service alone. Your realistic options are to request a refund of your Defined Benefit and Defined Benefit Supplement account contributions plus accrued interest, or to leave the contributions on deposit with CalSTRS in case you return to CalSTRS-covered teaching later and can combine the service to reach vesting.
A refund is a significant decision, not a routine paperwork step: taking it closes out that period of CalSTRS membership permanently, and if you later return to teaching, you would generally need to re-establish membership and, if you want the earlier service to count again, formally redeposit the refunded amount with interest under CalSTRS's redeposit rules — which can cost meaningfully more than what you originally withdrew.
Tax treatment of a refund
A CalSTRS refund is taxable income to the extent it represents contributions and interest that haven't already been taxed, and CalSTRS is required to withhold at least 20% for federal tax on a direct payment (rather than a direct rollover) unless you arrange a trustee-to-trustee rollover into an IRA or another qualified retirement plan. Rolling the refund over avoids the immediate withholding and the potential early-withdrawal tax consequences that can apply to a lump-sum distribution taken before typical retirement age.
Before requesting a refund, it's worth running the numbers on both paths — taking the refund now versus leaving the contributions on deposit in case you return to CalSTRS-covered work — since the refund forecloses the vesting clock you've already built up, and restarting from zero service credit in a later return is a real cost even if the dollar refund amount looks appealing today.
Comparing a refund against leaving contributions on deposit
The refund decision is easier to evaluate side by side. Taking a refund gives you immediate access to your contributions and interest, which can be rolled into an IRA to avoid immediate tax consequences, but it permanently closes out that period of CalSTRS membership and the service credit that came with it. Leaving contributions on deposit means you forgo immediate access to the money, but you preserve the service credit toward eventually reaching the 5-year vesting threshold if you return to CalSTRS-covered teaching, without needing to go through the more expensive redeposit process later.
There is no universally correct choice between the two — a teacher who is confident they won't return to California public school teaching may reasonably prefer the refund and its portability into a personal retirement account, while a teacher who left for a temporary reason (a family relocation, a leave of absence that turned into a longer gap) may find leaving the contributions on deposit is the more valuable long-term choice, especially if they're already close to the 5-year mark.
If you're close to 5 years and considering leaving
If you're approaching the 5-year vesting mark and considering leaving teaching, it's worth checking your exact service credit total before finalizing a departure date — a difference of a few months can be the gap between vesting for a future benefit and needing to take a refund instead. Contact CalSTRS or check your myCalSTRS account for your precise current service credit total rather than estimating from memory.
Checklist before you decide
- Check your current CalSTRS service credit total before finalizing a departure date near the 5-year mark.
- Compare taking a refund vs. leaving contributions on deposit if you might return to teaching later.
- If taking a refund, ask about a trustee-to-trustee rollover to avoid mandatory withholding.
- Understand that a refund forfeits your right to a future CalSTRS benefit from that service.
Common questions
How many years does it take to vest in CalSTRS?
5 years of service credit, under both the classic (2% at 60) and PEPRA (2% at 62) benefit structures.
What happens to my CalSTRS contributions if I leave before vesting?
You can request a refund of your Defined Benefit and Defined Benefit Supplement contributions plus interest, or leave the contributions on deposit in case you return to CalSTRS-covered teaching later and want the service to count toward vesting.
Is a CalSTRS refund taxable?
Yes, generally, to the extent it represents contributions and interest not already taxed. CalSTRS withholds at least 20% for federal tax on a direct payment unless you arrange a trustee-to-trustee rollover into an IRA or another qualified plan.
Can I get my old CalSTRS service credit back if I return to teaching after taking a refund?
Only through CalSTRS's specific redeposit process, which generally requires repaying the refunded amount plus interest — it is not automatic and can cost more than the amount you originally received.
Does part-time CalSTRS-covered work still count toward the 5-year vesting requirement?
Part-time work earns service credit proportional to a full-time schedule, which counts toward vesting, but it may take longer in calendar time to accumulate 5 full years of service credit than 5 calendar years of part-time employment would suggest.
Is there a deadline for deciding between a refund and leaving contributions on deposit?
CalSTRS allows former members to leave their contributions on deposit, and the accounts continue to accrue interest while they remain there. If you later return to CalSTRS-covered work, the service can remain available toward vesting; check your account and CalSTRS's current rules for the options and timing that apply to you.
Does CalSTRS notify me automatically when I reach 5 years of service credit?
CalSTRS does not typically send a specific automatic notice the moment you cross the 5-year vesting threshold — check your myCalSTRS account or annual member statement periodically to confirm your current service credit total rather than waiting for a notification.
Sources for this page
Sources were reviewed on September 12, 2026. Rules and member records maintained by the retirement system control.
CalSTRS — Refund of ContributionsOfficial source ↗CalSTRS — Two Benefit StructuresOfficial source ↗This article provides general educational information. It is not a benefit determination or financial, tax, or legal advice. Confirm account-specific information with the retirement system.
