Fedweek

If you are a CSRS or CSRS-Offset employee who doesn’t owe any deposits or redeposits to the retirement system, you are free to invest up to 10 percent of your lifetime federal civilian earnings in the Voluntary Contributions Program (VCP) and earn market rate interest, writes benefits expert Reg Jones. “Yes, that’s right.

https://www.fedweek.com/content/ev/index.php