Reviewed by Jonathan Teplitsky · Updated August 2026 · Informational only — not financial or investment advice; Rank and Pay is not affiliated with the Thrift Savings Plan or the federal government.
Why a TSP account goes "missing"
A Thrift Savings Plan account does not close itself, and it does not get swept into unclaimed-property funds the way an old bank account can. If you ever had a TSP account, the money is still there — the login credentials are usually what got lost, not the account. That happens most often after a permanent change of station, a long gap since separation, a name or email change, or simply years passing since anyone last checked a balance.
The fix is almost always one of two things: get back into your existing online account, or confirm through the ThriftLine that an account exists at all.
Step 1: Try logging in at tsp.gov first
Start at tsp.gov and select "Log In." TSP account access runs through Login.gov or ID.me identity verification, not a separate TSP password, so most "I can't log in" problems are actually identity-verification problems. If you no longer have the phone number or email on file with Login.gov, recover that account first — TSP support cannot bypass Login.gov identity verification for you.
If you know your TSP account number but have never set up online access, use the "First time online?" path on the same login page to create it.
Step 2: Call the ThriftLine to locate the account
If you are not sure an account exists, or the online path is not working, call the ThriftLine at 1-877-968-3778 (or 404-233-4400 from outside the United States). Representatives are available Monday through Friday, 7:00 a.m. to 9:00 p.m. Eastern. Have your Social Security number ready — that is how a representative confirms whether a TSP account is associated with you and, if so, its status.
You can also reach the ThriftLine service center in writing: fax 1-276-926-8948, or mail ThriftLine Service Center, C/O Broadridge Processing, PO Box 1600, Newark, NJ 07101-1600.
If you served before 2018, you may genuinely have no account
Under the legacy High-3 and Final Pay retirement systems, TSP participation for uniformed service members was opt-in — nothing was contributed on your behalf unless you signed up. Automatic enrollment for service members did not begin until the Blended Retirement System (BRS) took effect on January 1, 2018, which auto-enrolls BRS members at a default contribution rate with matching. If you separated before 2018 and never elected to contribute, there may be no account to find. See our Blended Retirement System guide for how BRS enrollment works today.
If you have more than one TSP account
It is possible to end up with two account numbers — for example, a uniformed-services TSP account from active duty and a separate civilian TSP account from later federal employment. The two do not merge automatically. The ThriftLine can confirm whether more than one account exists under your Social Security number, and TSP publishes guidance on consolidating them into a single account once you have access to both.
Common mistakes
- Assuming a forgotten password means a closed account. TSP accounts do not close for inactivity; access credentials just lapse.
- Trying to reset a TSP password directly with TSP. Login runs through Login.gov/ID.me — recover that account first.
- Giving up after one call. If the ThriftLine cannot verify you over the phone, ask what documentation (photo ID, notarized request) will let you verify in writing instead.
- Not checking for a second account after a switch between uniformed and civilian federal service.
Next step
Start at tsp.gov. If login recovery does not resolve it, call the ThriftLine at 1-877-968-3778 with your Social Security number ready. Once you are back in, compare your account against a standalone IRA on our TSP vs IRA guide, or check TSP withdrawal strategies if you are approaching retirement.
This page is informational only and is not financial or investment advice. Rank and Pay is not affiliated with the Thrift Savings Plan, the Federal Retirement Thrift Investment Board, or the federal government. For account-specific help, contact the ThriftLine or Login.gov support directly.