There are two types of savings bonds currently offered by the Treasury, Series EE and Series I.
Series EE '''''' are guaranteed to double in value over the purchase price when they mature 20 years from issuance, though they continue to earn interest for a total of 30 years. Interest accrues monthly, and is compounded semiannually, that is, becomes part of the principal for future interest earning calculations. If a bond's
compounded interest does not meet the guaranteed doubling of the purchase price, Treasury will make a one-time adjustment to the maturity value at 20 years, giving it an effective rate of 3.5%. The bond will continue to earn the fixed rate for 10 more years. All interest is paid when the holder cashes the bond. For bonds issued before May 2005, the interest rate was an adjustable rate recomputed every six months at 90% of the average five-year Treasury yield for the preceding six months. Bonds issued in May 2005 or later pay a fixed interest rate for the life of the bond. Paper EE bonds, last sold in 2011, could be purchased for half their face value; for example, a $100 bond could be purchased for $50, but would only reach its full $100 value at maturity.
Series I In 1998, the Treasury introduced the '''''' which have a variable yield based on
inflation. The Treasury currently issues Series I bonds electronically in any denomination down to the penny, with a minimum purchase of $25. As of January 1, 2025, paper bonds are no longer an option for receiving a federal income
tax refund. The paper bonds were issued in denominations of $50, $100, $200, $500, and $1,000, featuring portraits of
Helen Keller,
Martin Luther King Jr.,
Chief Joseph,
George C. Marshall, and
Albert Einstein, respectively. Earlier discontinued denominations included $75, $5,000, and $10,000 featuring
Hector P. Garcia,
Marian Anderson, and
Spark Matsunaga. Gulf Coast Recovery Bonds are a special issue of I series issued from March 29, 2006, through September 30, 2007, in order to encourage public support for hurricane recovery, including from
Katrina, in the affected states. The interest rate for Series I bonds consists of two components. The first is a fixed rate which will remain constant over the life of the bond; the second component is a variable rate adjusted every six months from the time the bond is purchased based on the current inflation rate. The fixed rate is determined by the Treasury Department, which has not disclosed how that rate is set. The variable component is based on the non-seasonally adjusted
Consumer Price Index for urban areas (CPI-U) for a six-month period ending one month prior to the rate adjustment. Specifically the variable rate is calculated by looking at the percent change over the previous six months of available data, and multiplying the percent change by two to annualize the rate. New rates are published on May 1 and November 1 of each year.
Terms Series EE bonds and Series I bonds have a life of 30 years and cease accruing interest after maturity, but they can be redeemed any time after 12 months from purchase. Treasury has the authority to waive the 12-month holding period for bondholders residing in areas of natural disaster. There is a penalty of three months' interest if they are redeemed before five years. Tax on the interest can be deferred until the bond is redeemed. Interest on redeemed bonds is subject to federal income tax but not state or local income taxes. The annual purchase limit for electronic Series EE and Series I savings bonds is $10,000 for each series. This limit applies to both purchases and bonds received as gifts (except that bonds received as a beneficiary do not count against the limit). For paper Series I Savings Bonds purchased through IRS tax refunds the purchase limit was $5,000, in addition to the online purchase limit. Individuals who own either type of bond must have a
Social Security number and be either a United States citizen, a legal United States resident, or a civilian employee of the United States regardless of country of residence. Trusts, estates, corporations, partnerships, and other entities may own Series EE bonds if they have a Social Security Number or
Employer Identification Number. Trusts and estates may own Series I bonds in some cases. == Historical bonds ==