If we take Series EE bonds as an example ... as these may affect the bond's value. In addition to the calculator, the U.S.

Series EE bonds haven’t always taken 20 years to hit the double-value marker and mature ... the U.S. Treasury offers a savings bond calculator that can help you figure out what you’ve earned ...

Series EE savings bonds issued on and after May 2005 earn a fixed rate of interest and mature in 30 years. After 20 years, the bond receives a one-time adjustment that doubles its initial value.

Series EE bonds double in value if held for at least 20 years, while I bonds keep pace with inflation. A savings bond is a debt security you can buy from the U.S. Treasury. Both types of savings ...

Use the TreasuryDirect Savings Bond Calculator ... Do EE bonds really double in 20 years? Yes. Series EE bonds are guaranteed to double in value in 20 years, regardless of the fixed interest ...