Can military members have a 401k?

Yes, military members can participate in a 401(k) plan if they are employed in a civilian job that offers this benefit. However, active-duty service members do not have access to a traditional 401(k) through the military. Instead, they can contribute to the Thrift Savings Plan (TSP), which is a retirement savings plan specifically designed for federal employees and members of the uniformed services, offering similar tax advantages.