How much is my EE series savings bond for 100.00 purchased on march 5 1986 worth today?

To determine the current value of your EE series savings bond purchased for $100 on March 5, 1986, you'll need to check the U.S. Department of the Treasury's savings bond calculator or refer to the specific bond's interest rates and terms. EE bonds issued before May 1995 earn interest at a fixed rate, and they also earn interest for 30 years. Generally, bonds from that era have appreciated significantly, potentially being worth several hundred dollars today, depending on the specific interest rate and compounding.