Interest is paid semiannually beginning six months from the issue date.
Interest ceases at final maturity. Series HH bonds are not subject to a purchase limitation. Series HH bonds have an original maturity period of 10 years and have been granted one 10-year extension of maturity with interest, bringing their final maturity to 20 years. If the redemption date falls on an interest payment date, interest ceases on that date. They are available in exchange for Series EE bonds , Series E bonds , and savings notes whose final maturity date is not more than one calendar year earlier than the issue date of the Series HH bond.