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What Happens to Your TSP When You Leave the Military

Updated June 2026 · ~5 min read

Separating or retiring? Your TSP doesn't disappear — it's yours to keep. But you'll have choices to make, and a few of them carry real tax consequences. Here's a clear rundown.

Your money is vested (mostly)

Everything you contributed, plus all government matching contributions, is yours immediately. The only piece with a catch is the automatic 1% contributions under the Blended Retirement System, which vest after two years of service. Hit that mark and 100% of your balance goes with you.

Option 1: Leave it in the TSP

You don't have to move anything. The TSP is well known for very low fees, and you can keep your money invested in the same funds after you separate. You can't make new contributions once you leave federal service, but your balance keeps growing with the market, and you can still rebalance among funds.

Option 2: Roll it over

You can roll your TSP into an IRA or a new employer's 401(k). Reasons people do this include wanting more investment choices or consolidating accounts. Two important cautions:

Watch the fees. The TSP's costs are among the lowest anywhere. Before rolling into an IRA, compare fees — a "more choices" pitch can come with higher expenses that quietly erode returns.

Option 3: Withdraw it

You can take money out, but cashing out early is usually the most expensive choice. Withdrawals of Traditional funds are taxed as income, and taking money before age 59½ generally adds a 10% early-withdrawal penalty (with some exceptions). Beyond the tax hit, you lose decades of potential compounding.

Common mistakes to avoid

See how your balance could grow if you leave it invested →

Related reading: TSP funds explained · Lifecycle (L) Funds guide · BRS vs. High-3

This article is for general education only and is not financial or tax advice. CalculateTSP is independent and not affiliated with, endorsed by, or sponsored by the U.S. Department of Defense, DFAS, or the Federal Retirement Thrift Investment Board. Consult a tax professional about your situation; confirm current rules at tsp.gov.