Thrift Saving Plan or TSP is a program for retired officers working in the US. You can save your money or retire in TSP. The Internal Revenue Service has developed this program with several benefits of tax for federal employees. It is like 401 for governmental officers. To get the benefits of this program, the IRS can limit the time you owe your money from your TSP account. If you don’t debt at the right time, you’re going to get an extra penalty. At what age can I withdraw from TSP without penalty? It seems to be a unique question to answer.