The tsp rule of 55 withdrawal rules are designed to provide flexibility, but they require careful understanding. Under these rules, separating from service at 55 allows you to avoid the 10% early withdrawal penalty on TSP distributions. However, the tsp rule of 55 withdrawal rules specify that this only applies to withdrawals made directly from the TSP—not necessarily rollovers or IRA... https://www.federalpensionadvisors.com/post/tsp-rule-of-55