What is a Treasury Bill? How do you invest in Treasury Bills? In this video series on Begin To Invest we are explaining the basics of investing. Today's video is on Treasury Bills, also known as T-Bills A Treasury Bill is a short term government security, with a maturity under 52 weeks. Think of it like a short term bond. But there are some differences between a bill and a bond, as we will see in the video. For more, visit: http://www.begintoinvest.com/definitions/treasury-bill/