When you vest, and what you keep if you leave
Vesting means owning something even if you leave. In federal service three clocks run at once. Your own contributions and the agency match are yours immediately, the automatic 1% takes three years, and a future pension takes five.
8 min read · By RetireCiv Editorial · Updated August 5, 2026
Why is there more than one vesting date?
Because the pieces of your retirement come from different programs with different rules. People assume one date makes them "vested." In practice three separate clocks start on your first day and finish years apart.
Vesting has a narrow meaning worth being precise about. It is not when money appears in your account, and it is not when you can retire. It is whether the money stays yours if you walk away tomorrow.
The three clocks are your own contributions and the agency match, which are yours from day one, the agency automatic 1% contribution at three years, and the Federal Employees Retirement System (FERS) pension at five years.
That spread is why a two-year employee and a four-year employee leave with genuinely different things. The rest of this lesson takes each clock in turn.
What does it mean to be vested in FERS?
It means you keep a benefit even if you leave federal service. For the pension it takes five years of creditable civilian service, after which you have earned the right to claim an annuity later. Vesting is separate from being eligible to retire, which requires meeting an age and service combination as well.
Is vesting the same as being eligible to retire?
No, and confusing the two is common. Vesting means the benefit is yours to claim eventually. Eligibility means you can start collecting now. You can be vested in a FERS pension at five years and still be decades away from an age at which it becomes payable.
What is yours from your very first paycheck?
Two of the three pieces, and they are the ones people worry about needlessly. The money you contribute to the Thrift Savings Plan (TSP) is yours immediately. So are the agency matching contributions on top of it.
There is no waiting period on either. If you contribute in your first pay period and leave federal service the following month, both your contribution and the match on it go with you, along with any earnings.
That has a practical consequence for new hires who are unsure how long they will stay. Contributing enough to capture the full match is not a bet on staying, because the match is not at risk. The 5% match lesson covers how the match is structured and how to capture all of it.
One piece of agency money is different, and it is the automatic 1% contribution covered next. It is the only part of your TSP with a waiting period.
Do I keep the TSP match if I leave federal service early?
Yes. Agency matching contributions vest immediately, so they are yours from the moment they are deposited, along with their earnings. Only the separate agency automatic 1 percent contribution has a vesting period. Leaving early costs you future contributions, not the matched money already in your account.
Are my own TSP contributions ever at risk?
No. Money you contribute from your own pay is yours at all times, as are its earnings. No period of service is required and no separation forfeits it. The question of vesting only ever applies to money the agency puts in on your behalf.
What happens at three years of service?
The agency automatic 1% contribution vests. This is the contribution your agency makes whether or not you contribute anything yourself, and it is the only part of your TSP account with a cliff.
A cliff means all or nothing. You are vested after completing three years of federal service, generally civilian service. Leave at two years and eleven months and the automatic contributions and their earnings are forfeited. Leave a month later and they are entirely yours.
A smaller group vests in two years instead. The two-year schedule applies to noncareer Senior Executive Service positions, Executive Level positions, Schedule C positions, and Members of Congress and Congressional employees. Most federal employees are on the three-year schedule.
Your TSP account statement shows your vesting status, and your agency reports a TSP Service Computation Date that the clock runs from. That date is not always the same as your retirement service computation date, which is worth checking if you have prior federal service.
How long until I am vested in the TSP?
Three years of federal service for the agency automatic 1 percent contribution, which is the only part with a waiting period. Certain noncareer positions vest in two years instead. Your own contributions and the agency matching contributions are vested immediately and are never subject to this clock.
What happens to the automatic 1% if I leave before three years?
The automatic contributions and the earnings on them are forfeited. Everything else in your account stays yours, including your own contributions, the agency match, and all of their earnings. It is a cliff rather than a gradual schedule, so a single additional month of service can change the outcome entirely.
Which positions vest in two years instead of three?
Noncareer Senior Executive Service positions, Executive Level positions, Schedule C positions, and Members of Congress and Congressional employees. These are a small share of the federal workforce. If none of those describe your appointment, the three-year schedule applies to you.
What does five years of service actually buy?
A pension you can claim later, even if you leave long before retirement age. Five years of creditable civilian service is the threshold at which you become vested in the FERS basic annuity.
What it buys is a right, not a payment. If you are vested and you separate, you can leave your retirement deductions where they are and claim a deferred annuity at 62. You are not eligible to collect anything before then on this route.
The amount is computed from the service you actually had. Five years of service produces a five-year pension, which is small. The value is that it is a lifetime, inflation-adjusted benefit you no longer have to be a federal employee to receive.
The deferred and postponed retirement lesson covers how the deferred route works and how it differs from postponing an immediate annuity. This slide covers only the threshold that creates the option.
How long until my federal pension is vested?
Five years of creditable civilian service. At that point you have earned a right to a FERS annuity, claimable at age 62 if you separate before you are eligible to retire. Reaching five years does not let you retire; it means the pension survives your departure.
Is a five-year pension worth keeping?
That depends on your situation, so we describe the trade rather than advise. A five-year pension is small, because the formula multiplies your service years. It is also lifetime income with cost-of-living increases that begin at 62, which is difficult to replicate with the refunded contributions alone.
What do you walk away with at each stage?
It depends entirely on which clocks you have finished. The table below is the whole question in one view, and it is the reason a departure date a few months either side of a cliff matters more than people expect.
Under three years, you keep your own contributions, the agency match, and all their earnings. You forfeit the automatic 1%. You have no pension right, though you can apply for a refund of the retirement deductions taken from your pay.
Between three and five years, the automatic 1% is now yours too. The pension is still out of reach, so the refund question is the same one.
At five years and beyond, all three clocks are finished. You can leave your deductions in place and claim a deferred annuity at 62, or take a refund instead. Taking a refund gives up credit for that service unless it is later repaid, which the deposits and redeposits lesson covers.
What you keep, by years of service
| Years of service | TSP | Pension |
|---|---|---|
| Under 3 years | Automatic 1% forfeited | No right |
| 3 to 5 years | All of it is yours | No right |
| 5 years or more | All of it is yours | Deferred annuity at 62 |
What happens to my FERS contributions if I leave before five years?
You can apply for a refund of the retirement deductions withheld from your pay, paid as a one-time lump sum. Without five years of creditable civilian service there is no deferred annuity to preserve, so the refund is the main option. Your TSP account is separate and is not affected by that decision.
Does taking a refund affect me if I return to federal service?
It can. A refund generally gives up service credit for the refunded period, which matters if you come back and want that time counted toward a future annuity. Paying it back later is possible in some circumstances. The deposits and redeposits lesson covers how that works.
How to find out where you actually stand
Two dates decide everything on this page, and neither is guaranteed to be right in your records. Checking them early is cheap; discovering an error at separation is not.
The first is your TSP Service Computation Date, which drives the automatic 1% clock. It appears in your TSP account and is reported by your agency. Prior federal service can move it in ways people do not expect.
The second is your retirement service computation date, which drives creditable service toward the five-year pension vest. It is not always identical to the TSP date, and periods such as non-deduction service can complicate it.
If you have any prior federal service, temporary appointments, or a break in service, ask your agency HR office to confirm both. To see how the pieces fit into a longer plan, run your free readiness score.
How do I check whether I am vested?
Look at your TSP account for your vesting status and TSP Service Computation Date, and ask your agency HR office to confirm your creditable civilian service toward the five-year pension threshold. The two dates come from different systems and can differ, particularly if you have prior or intermittent federal service.
Can prior federal service count toward vesting?
Often yes, which is why the dates are worth confirming rather than assuming. Earlier federal service can move your service computation dates forward and put a vesting cliff closer than you thought. Temporary appointments and breaks in service are the cases most likely to need a human to sort out.