Since MayEE bonds have been issued earning a fixed rate of interest, so a final value can be fairly accurately determined with a couple of easy calculations. Older series EE bonds earn variable rates, which can change twice a year.
The projected value of one of these bonds will be more of a ballpark figure. Look up the interest rate for your savings bond if you do not already know the rate.
Rates for new bonds are set every May 1st and November 1st by the U. The rate for any savings bond can be found in the Redemption Tables available on the TreasuryDirect.
Find the link for the tables under the Tools tab in the blue menu bar across every page of the website. Determine the month when your bond will double in value.
Current issue series EE bonds are guaranteed to double in no longer than 20 years. At the time of publication, no savings bond has been issued earning a high enough interest rate to double sooner than 20 years.
Multiply the interest rate times 11 and add one to obtain a multiplication factor to calculate the bond growth from year 20 to year For example, if the bond is earning 3.
Multiply the factor times the bonds 20 year value to get an estimated 30 year value.