When you leave your employer, you can receive a distribution from the Thrift Savings Plan. Then you have 60 days to roll the funds into an IRA. However, the government will be required to withhold 20 percent of the amount in your account.

Say you leave a job where you have $300,000 in the TSP. When you request a distribution, the TSP will pay you only $240,000 and withhold $60,000 (20 percent of $300,000) for federal income tax.

If you don