A Series EE bond is a nonmarketable U.S. savings bond with fixed-rate accrual and Treasury-specific redemption rules.
A Series EE bond is a nonmarketable U.S. savings bond with a fixed rate for at least its first 20 years and a Treasury guarantee that a bond sold today will be worth twice its purchase amount at 20 years. It is redeemed under Treasury rules rather than sold at a market price.
| Feature | Series EE Bond Treatment |
|---|---|
| Marketability | Nonmarketable savings bond. |
| Rate type | Fixed rate for current EE bonds. |
| Interest accrual | Monthly accrual with semiannual compounding. |
| Long-horizon rule | Treasury guarantees current EE bonds double in value if held 20 years. |
| Final maturity | EE bonds can earn interest up to 30 years. |
| Main source | TreasuryDirect for issue-date rules, rates, and redemption values. |
The fixed rate and the doubling guarantee are related but not identical. The fixed rate drives the bond’s regular accrual. If that accrual has not doubled a current EE bond by its 20-year original maturity, Treasury makes the adjustment needed to reach twice the purchase amount. Redeeming before 20 years gives up that future guarantee adjustment.
Assume a saver buys $5,000 of current Series EE bonds and holds them for exactly 20 years. Treasury’s guarantee means the value at that point will be at least:
$5,000 x 2 = $10,000
The annualized compound return needed to double over 20 years is:
2^(1/20) - 1 = 3.53% per year
That 3.53% is an implied 20-year compound return, not the bond’s published fixed rate and not a promise that the account grows smoothly at 3.53% every year. If regular fixed-rate accrual is below the guaranteed amount, part of the value increase can arrive through Treasury’s 20-year adjustment. A saver who redeems after 19 years receives the Treasury-calculated redemption value at that date, not the 20-year guaranteed value.
This makes the intended holding period central. A current EE bond can have one return profile for a saver committed to 20 years and a different realized return for someone likely to redeem earlier.
| Feature | Series EE Bond | Series I Bond |
|---|---|---|
| Rate structure | Fixed-rate savings bond. | Fixed rate plus inflation component. |
| Inflation link | No direct inflation component. | Inflation component updates every six months. |
| Value behavior | Treasury’s 20-year doubling rule is central. | Composite rate changes with inflation. |
| Main analytical use | Long-horizon fixed savings with a 20-year value guarantee. | Savings whose rate responds to measured inflation. |
| Verification | TreasuryDirect EE bond page and account records. | TreasuryDirect I bond page and current rate table. |
An EE bond cannot generally be redeemed during its first 12 months. Redemption before five years forfeits the latest three months of interest. After five years, there is no three-month penalty, but redeeming before 20 years still gives up the future doubling guarantee adjustment.
The 20-year guarantee is stated in nominal dollars. It does not guarantee that purchasing power doubles, so inflation and alternative yields matter. It also does not guarantee that an EE bond will outperform an I bond, a marketable Treasury, or an insured deposit over a reader’s actual holding period.
EE bond interest is subject to federal income tax and exempt from state and local income taxes under current Treasury guidance. Federal reporting may generally be deferred until redemption or final maturity for many cash-method individuals, but annual accrual elections, ownership transfers, and education-exclusion rules can change the result.