Some types of bonds offer fixed rate returns, whereas longer - term bonds are purchased at less than face - value, meaning that over the years, the value can rise considerably. (etfbase.com)
Municipal bonds offer yields that are usually lower, but the interest should be tax - free. (humbledollar.com)
High - yield bonds offer higher rates of interest, given the higher risk of default, than bonds issued by investment - grade corporations. (indexologyblog.com)