I have received US Savings Bonds as gifts throughout my life from my birth, to birthdays, to high school graduation. My understanding is that some EE Series US Savings Bonds have a fixed interest rate and others have a variable interest rate depending on when the bonds were issued. How can I determine whether my bonds have a fixed or variable interest rate. Furthermore, if the interest rate is variable, how can I determine what the current interest rate is?
Yes, some are fixed and some are variable. It 100% depends on the EE Bond issue date. For example:
"EE Bonds issued from May 1997 through April 2005 earn a variable rate of interest. Treasury determines the rate each May 1 and November 1 and applies that rate for six-month rate periods that start in the next six months."
Read this for complete list of issue dates and interest rates: https://www.treasurydirect.gov/indiv/research/indepth/ebonds/res_e_bonds_eeratesandterms.htm
Also, you can look up the exact value of your bonds at anytime by putting their serial number in here: http://www.treasurydirect.gov/BC/SBCPrice