Need Help?
Call the toll-free ThriftLine at 1-877-968-3778 and speak to a Participant Service Representative.

For calls outside the U.S. and Canada call 1-404-233-4400 (not a toll-free number).

The ThriftLine hours are Monday through Friday, 7 a.m. to 9 p.m., Eastern time.

To correct personal information such as your address, you can call or write to the TSP. You can also change your address by logging into "My Account" on the TSP website. You will need your TSP beneficiary participant account number or your user ID and your Web password.

To update your beneficiary information or change your beneficiary(ies), complete a new Form TSP-3, Designation of Beneficiary, and send the form directly to the TSP.