What is a savings bond?

A U.S. savings bond is a loan you make to the federal government, repaid with interest. The two current types are Series EE bonds (fixed rate, guaranteed to double in value after 20 years) and Series I bonds (a composite rate that adjusts every 6 months for inflation). Both are sold electronically at TreasuryDirect.gov from $25 up to a $10,000 annual purchase limit per series, per person, and must be held at least 1 year — cashing before 5 years forfeits the last 3 months of interest.

A U.S. savings bond is a direct loan to the federal government: you buy it for its face value, the Treasury pays interest over time, and you redeem it later for the original amount plus accrued interest. Unlike a bank CD, savings bonds are backed by the full faith and credit of the U.S. government rather than FDIC deposit insurance, and they're purchased directly from the Treasury — not through a bank.

Series EE bonds: a fixed rate, guaranteed to double

Series EE bonds earn a fixed rate of interest that's locked when you buy the bond and doesn't change over the bond's life. The Treasury guarantees that a Series EE bond will be worth double its purchase price if held the full 20 years — if the fixed rate alone wouldn't get you there, the Treasury makes a one-time adjustment at year 20 to hit that doubling guarantee. Per TreasuryDirect, the fixed rate is set twice a year (each May 1 and November 1) and applies to bonds issued during that 6-month window.

Series I bonds: an inflation-adjusted composite rate

Series I bonds combine a fixed rate (locked at purchase, same for the bond's life) with an inflation-adjusted variable rate that resets every 6 months based on the Consumer Price Index. The two combine into a single composite rate. Because the variable component tracks inflation, an I bond's total rate moves over time even though the fixed portion never changes — which is the entire point of the product: protecting purchasing power against inflation.

Buying, holding, and cashing rules

  • Purchase: electronic-only through a TreasuryDirect.gov account, in any amount from $25 up to a $10,000 calendar-year maximum per series, per Social Security number.
  • Minimum hold: at least 1 year before you can redeem at all — there's no way to cash out sooner.
  • Early-redemption penalty: cashing before 5 years costs the last 3 months of accrued interest. After 5 years, there's no penalty.
  • Final maturity: both series continue earning interest for up to 30 years total if you never cash them.

Tax treatment

Savings bond interest is subject to federal income tax but exempt from state and local income tax — a meaningful advantage in high-state-tax areas. You can also choose to defer reporting the interest until you cash the bond or it reaches final maturity, rather than paying tax on it year by year. A narrower break, the Education Savings Bond Program, lets you exclude the interest from federal tax entirely when the proceeds from Series EE or I bonds issued after 1989 pay for qualified higher-education expenses — but only if the bond owner was age 24 or older when the bond was issued, income falls under IRS thresholds, and IRS Form 8815 is filed. A bond registered to a child doesn't qualify later even after the child turns 24.

What TreasuryDirect says

  • Series EE bonds are "guaranteed to double in value in 20 years," and both Series EE and I bonds can be purchased electronically from $25 up to a $10,000 calendar-year maximum. TreasuryDirect — Savings Bonds
  • Savings bonds can be cashed after 1 year, but cashing before 5 years forfeits the last 3 months of interest. TreasuryDirect — Savings Bonds
  • The Education Savings Bond Program requires the bond owner to have been at least 24 years old when the bond was issued, among other eligibility conditions, to exclude interest from federal tax when used for qualified education expenses. TreasuryDirect — Using Bonds for Education

Key takeaways

  • Series EE bonds pay a fixed rate and are guaranteed to double in value after 20 years, whatever the stated rate implies.
  • Series I bonds combine a fixed rate with an inflation-adjusted rate that resets every 6 months.
  • Both are electronic-only via TreasuryDirect.gov, $25 minimum, $10,000 annual cap per series per person.
  • You must hold at least 1 year; cashing before 5 years costs the last 3 months of interest.
  • Interest is exempt from state and local tax (federal tax still applies) — and can be fully excluded for qualified education expenses if the owner was 24+ when the bond was issued.

Savings bonds are one option for long-horizon, inflation-protected savings — for money you might need sooner, an FDIC-insured CD or high-yield savings account offers more flexibility. Compare current CD and savings terms at ClearValue Banking.

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