A Treasury Bond, also known as a T-bond, is a long-term debt security issued by the United States Department of the Treasury. T-bonds have maturities of more than 10 years and are sold at face value, which means that an investor will pay the full face value of the bond at the time of purchase, and will receive that same amount when the bond matures. The bond pays interest to the bondholder semi-annually at a fixed rate, known as the coupon rate, for the duration of the bond's life. The interest paid on T-bonds is considered taxable income.Treasury bonds are considered to be among the safest investments, as they are backed by the full faith and credit of the U.S. government. They are considered to be a low-risk investment, as they are issued by the U.S. government and are considered to be virtually risk-free. The main risk associated with T-bonds is the risk of inflation, which can erode the purchasing power of the interest earned on the investment.T-bonds can be purchased through Treasury Direct, an online system operated by the Treasury Department, or through a bank or broker. T-bonds can also be purchased on the secondary market, where they are traded among investors.T-bonds are considered to be a good investment option for those looking for a safe, long-term investment with a relatively stable and predictable return. They can be used as a diversification tool in a portfolio, or as a hedge against inflation. It's worth noting that, unlike T-bills, T-bonds are not considered to be a liquid investment, as they cannot be easily sold before maturity. Additionally, the longer the maturity of a bond.