Mastering the TSP Rule of 55: What You Need to Know The TSP Rule of 55 is a valuable retirement planning tool for federal employees and uniformed service members. It allows penalty-free access to TSP funds if you separate from service in or after the year you turn 55. This exception to the early withdrawal penalty provides flexibility for early retirees needing income. Understanding ... https://www.federalpensionadvisors.com/post/tsp-rule-of-55