How Do Savings Bonds Work?

Updated July 2026

What Is a Savings Bond?

A savings bond is a type of US government debt you purchase directly from the Treasury. There is no broker involved, no exchange, and no secondary market where you can sell it to someone else. You buy at face value, the government pays you interest while you hold the bond, and you redeem it when you choose (subject to the rules below).

Two series are sold today:

• Series I bonds: inflation-protected, with a rate tied to the Consumer Price Index
• Series EE bonds: fixed rate, with a government guarantee to double in value over 20 years

Older series (E, H, HH) are no longer issued but may still be outstanding. Those are handled separately through TreasuryDirect.

Series I vs. Series EE: Side by Side

Feature	Series I Bond	Series EE Bond
Current rate (May 2026)	4.26% composite	2.40% fixed
Rate structure	Fixed rate + inflation adjustment, resets every 6 months	Fixed for the life of the bond
20-year doubling guarantee	No	Yes (Treasury makes up any shortfall)
Annual electronic purchase limit	$10,000 per SSN	$10,000 per SSN
Paper bonds available	Yes, up to $5,000 via tax refund	No
Minimum hold period	12 months	12 months
Early redemption penalty	Forfeit last 3 months of interest if redeemed before 5 years	Forfeit last 3 months of interest if redeemed before 5 years
Full maturity	30 years	30 years
State and local tax	Exempt	Exempt
Federal tax	Deferred until redemption (or reportable annually if you prefer)	Deferred until redemption (or reportable annually if you prefer)

How Series I Bonds Work: The Mechanics

The interest rate on a Series I bond is called the composite rate. It combines two separate pieces:

1. A fixed rate set on the day you buy the bond and locked in for its entire 30-year life
2. A semiannual inflation rate tied to the CPI-U (the Consumer Price Index for All Urban Consumers), which the Treasury adjusts every May 1 and November 1

As of May 1, 2026, the composite rate is 4.26%, per TreasuryDirect. When inflation rises, the rate moves up at the next reset. When inflation falls, the rate drops, though the composite rate cannot go below zero.

Interest accrues monthly and compounds semiannually. You do not receive regular payments: all interest accumulates inside the bond and is paid out when you redeem it.

Worked Example: $5,000 in a Series I Bond for One Year

Say you invest $5,000 in a Series I bond in July 2026 at the current composite rate of 4.26%.

• After 12 months at 4.26%, interest earned is approximately $213
• Your bond is worth approximately $5,213 before any federal tax at redemption
• If you redeem at exactly 12 months, the three-month early-redemption penalty applies: you forfeit about one quarter of your annual interest, collecting roughly $5,160 in practice
• Hold to the five-year mark and the penalty disappears entirely

Your actual return will shift if the composite rate changes at the November 1 adjustment, but this shows how the base mechanics work.

How Series EE Bonds Work: The Mechanics

Series EE bonds pay a fixed rate for their lifetime, currently 2.40% as of May 2026 (TreasuryDirect). That rate looks modest, but EE bonds carry one specific feature: the Treasury guarantees your bond will be worth double its face value at the 20-year mark. If ordinary compound interest at 2.40% has not gotten you there, the government credits the difference in a one-time adjustment.

That 20-year doubling is equivalent to an effective annual yield of roughly 3.53%, which is more competitive than the stated 2.40% for anyone with a long hold horizon.

Worked Example: $10,000 in a Series EE Bond Held 20 Years

• You buy $10,000 in Series EE bonds today
• At 2.40% compounding annually for 20 years, ordinary interest grows the bond to roughly $16,150
• Because $16,150 is less than the guaranteed $20,000, the Treasury credits the $3,850 gap at the 20-year mark
• Result: $20,000 guaranteed on a $10,000 investment, a clean double
• Redeem before 20 years and you receive only the ordinary interest (minus the three-month penalty if before five years), with no doubling guarantee

The EE bond doubling guarantee makes sense only if you are highly confident you will hold for 20 years. Redeeming at year 15, for instance, gives you far less than the math on $20,000 suggests.

How to Buy Savings Bonds

The only place to buy electronic savings bonds is TreasuryDirect.gov, the US Treasury's official platform. No bank, brokerage, or financial advisor can sell them to you. The process has four steps:

1. Open a TreasuryDirect account. You need a Social Security number, a US address, and a bank account for funding. The account is free to open.
2. Link your bank account. TreasuryDirect pulls funds via ACH transfer. There is no wire or check option for standard purchases.
3. Choose your series and amount. The minimum purchase is $25 for electronic bonds. You can buy up to $10,000 per year per series per SSN. Series I bonds can also be purchased in paper form (up to an additional $5,000 per year) by directing a federal tax refund using IRS Form 8888 when you file your return.
4. Manage and redeem online. All bonds live in your TreasuryDirect account. You can redeem them there once the 12-month lockup has passed; proceeds typically reach your bank account in one to two business days.

One practical note: TreasuryDirect is a functional but dated platform. Account setup can be slower than people expect, and the interface is not intuitive. Budget extra time when you first open an account.

How Savings Bond Interest Is Taxed

Savings bonds have a favorable tax structure on two fronts:

• State and local taxes: always exempt. Interest on US savings bonds is never taxed at the state or local level, regardless of where you live. In a high-tax state, this matters.
• Federal income tax: deferred. You owe no federal tax on accrued interest until you redeem the bond (or it matures at 30 years). Deferring federal tax on a bond you hold for 10 or 20 years has real compounding value. You can also elect to report interest each year, though most holders skip this.
• Education exclusion: If you redeem Series EE or I bonds and use the proceeds to pay qualified higher education expenses, you may be able to exclude the interest from federal income tax entirely. Income limits apply and phase out at higher income levels. See IRS Publication 970 for the current thresholds.

The deferral feature makes savings bonds function somewhat like a tax-deferred account for a portion of your savings, without the contribution deadlines or account complexity.

Savings Bonds vs. High-Yield Savings Accounts

The most common question is how a Series I bond compares to a high-yield savings account (HYSA). They are not interchangeable:

	Series I Bond	High-Yield Savings Account
Rate type	Inflation-linked, resets every 6 months	Variable, bank can change any time
Rate (July 2026)	4.26% composite	Varies; top online rates typically 4.0% to 5.0%
Liquidity	Locked for 12 months; 3-month penalty before 5 years	Fully liquid, no penalty
Annual limit	$10,000 per SSN electronic (plus $5,000 paper)	No limit
State income tax on interest	Exempt	Owed at your state rate
Federal income tax on interest	Deferred until redemption	Owed in the year earned
Backing	Full faith and credit of the US government	FDIC-insured up to $250,000

If you need the cash within 12 months, a high-yield savings account wins on flexibility. If you want an inflation-protected return on money you will not need for at least a year, a Series I bond is a solid complement. For a deeper breakdown of short-term savings options, see our guide: High-Yield Savings vs. CD: Which Is Right for You in 2026?

What Savings Bonds Cannot Do

Before you buy, the limitations are worth naming plainly:

• One-year lockup, no exceptions. Once you invest, that money is inaccessible for 12 months. There is no hardship waiver.
• $10,000 annual cap per series. The per-person, per-series limit makes savings bonds a complement to a broader savings strategy, not a standalone account.
• I bond rate uncertainty. The composite rate resets every six months. If inflation drops sharply, your rate falls with it. The bond cannot go below zero, but it can drop below what a competitive HYSA pays.
• No automatic reinvestment. When a bond matures or you redeem it, TreasuryDirect deposits the proceeds in your linked bank account. You have to re-purchase manually if you want to roll the money over.
• Not designed for growth. Savings bonds preserve purchasing power and offer a safe return. They are not an alternative to equities, index funds, or a long-term investing strategy. For a grounding in how the broader investing landscape works, our explainer on how dividends work is a useful starting point.

To understand the interest-rate environment that determines what your savings earn, it also helps to know how the Federal Reserve's rate decisions move through the economy. Our guide to the inverted yield curve covers that terrain.

Frequently Asked Questions

How much interest does a savings bond earn?

It depends on the series and when you bought it. Series I bonds purchased in July 2026 earn a composite rate of 4.26% as of May 1, 2026 (TreasuryDirect); that rate resets every six months based on CPI data. Series EE bonds purchased in July 2026 earn a fixed 2.40% per year, with a government guarantee to produce a 100% gain if held exactly 20 years.

Can you lose money on a savings bond?

No, not in nominal terms. The face value of a US savings bond is backed by the federal government. The only downside is the early-redemption penalty: if you cash out before the five-year mark, you forfeit the last three months of interest. You will always receive at least your original principal back.

What is the difference between Series I and Series EE savings bonds?

Series I bonds adjust for inflation: the rate has a fixed component plus an inflation adjustment tied to CPI-U, and it resets every six months. Series EE bonds pay a fixed rate for their lifetime but come with a 20-year guarantee to double in value. I bonds suit investors who want inflation protection over a one-to-five-year hold. EE bonds suit people with a very long horizon who want a guaranteed, known doubling.

How long does it take to cash in a savings bond?

Electronic bonds redeemed through TreasuryDirect.gov after the 12-month lockup typically arrive in your linked bank account within one to two business days. Paper bonds can be redeemed at most local banks or by mailing them to the Treasury with a completed FS Form 1522.

Are savings bonds a good replacement for an emergency fund?

No. The 12-month lockup disqualifies savings bonds as emergency-fund money. An emergency fund must be fully liquid, meaning you can access it within days. A high-yield savings account is the right vehicle for that purpose; our High-Yield Savings vs. CD guide breaks down the best options for liquid cash.

Do savings bonds count toward FDIC insurance limits?

No. Savings bonds are not bank deposits and are not covered by FDIC insurance. They are direct obligations of the US Treasury, which means they carry the credit of the federal government itself, not a commercial bank.

---

Disclaimer: This content is for informational and educational purposes only and is not financial, investment, tax or trading advice. Markets involve risk, including the loss of principal, and leveraged products like forex carry a high risk of rapid losses. Consult a licensed professional before making financial decisions.