To manage your TSP savings online, you need to set up a login to My Account. During the setup process, you’ll create a username, password, and ThriftLine PIN to access your account., My AccountLoading × Sorry to interrupt CSS Error Refresh, The Thrift Savings Plan (TSP) is a defined contribution retirement savings and investment plan that offers Federal employees the same type of savings and tax benefits that many private corporations offer their employees under 401 (k) plans., The TSP is a retirement savings and investment plan for civilian employees of the United States Government and members of the uniformed services. TSP is similar to a 401K plan offered by many public and private corporations., In a separate package you will also receive a password for TSP account login at www.TSP.gov. You will also receive a 4-digit Personal Identification Number (PIN), which you will need to access your account on the ThriftLine (1-877-968-3778), the TSP’s automated voice response system., .