US Savings Bonds Explained: How EE and I Bonds Actually Work

US savings bonds are the one investment nearly everyone has heard of and almost nobody actually understands. The Treasury currently sells two kinds, Series EE and Series I, and they work in genuinely different ways. One guarantees your money will double by a specific date. The other tracks inflation and moves with it.

Most guides blur the two together, or focus almost entirely on I bonds because they've been more newsworthy lately. That leaves EE bonds as an afterthought most people never learn the actual mechanics of.

This article covers both equally: how each rate is actually calculated, the real annual purchase limit (which is not what most people assume), the tax treatment that makes both genuinely useful for high-tax-state savers, and which one fits which kind of goal.

1. What US Savings Bonds Actually Are

Think of Treasury savings bonds as a loan you make to the US government. In exchange, you get interest paid over time.

Here's the part that surprises people: a savings bond is not marketable. It cannot be bought or sold to anyone else. You can only redeem it back to the Treasury, once you've held it long enough. That's why a savings bond feels more like a savings account than an investment.

It's also why so many people who own one bought it decades ago without really understanding what they had.

This is the exact line that separates a savings bond from TIPS (Treasury Inflation-Protected Securities). TIPS are marketable, trade on the open market, and are usually bought through a brokerage account. Both offer inflation protection in a broad sense, but TIPS can rise or fall in price before maturity. A savings bond cannot, since it's never sold to anyone, only redeemed.

The Treasury currently issues exactly two kinds: Series EE and Series I, often searched and written as one word, ibonds, though the Treasury itself always writes it as two.

A third kind, Series HH, stopped being issued in 2004, and the last of them reached final maturity in August 2024. Any HH bond you still hold has stopped earning interest and should be cashed. Series E bonds, the original World War Two-era bonds, have also all matured.

If you find an old paper bond in a drawer, the series letter tells you right away whether it's still earning anything.

Need something more liquid than a bond's 12-month minimum hold? A certificate of deposit or a high-yield savings account are the more common comparison points, and both give you full access to your money.

2. EE Bonds vs I Bonds: The Actual Difference

EE savings bonds and I bonds share a lot: the same purchase minimum, the same $10,000-per-person annual limit each, the same tax treatment, and the same redemption rules. What separates them comes down to one thing, how the interest rate actually works.

The doubling guarantee is the one detail almost nobody explains clearly, and the ibond interest rate works on entirely different logic from it.

Here's how the guarantee actually works. Buy an EE bond today, and the Treasury sets a fixed rate that applies for the first 20 years.

If, at year 20, the interest actually earned hasn't doubled your money, the Treasury makes a one-time adjustment to bring the bond's value up to exactly double your purchase price. That works out to an effective annualized return of roughly 3.5 percent over the 20 years, no matter what happens to rates or inflation in between.

It's one of the only fixed-income guarantees of its kind still available to individual savers.

I bonds work differently, on purpose. According to TreasuryDirect's I bond interest rates page_LINK, the i bonds interest rate combines two pieces: an i bond fixed rate set at purchase that never changes, and an inflation rate recalculated every May 1 and November 1 based on the Consumer Price Index.

Your personal six-month reset schedule runs from your purchase month, not from the calendar dates the new rates get announced. That means two people who bought I bonds in different months are on different internal clocks, even if they bought during the same rate period.

3. What Determines the Savings Bond Rate You Actually Get

The savings bond interest rate, whether EE or I, resets on the same schedule. New rates come out every May 1 and November 1. Whichever rate is current on your purchase date is the one you get, at least for the first stretch.

For I bonds, that starting rate holds for six months. For EE bonds, the fixed rate you get at purchase holds for the full 20-year guarantee period.

The i bonds rate has moved a lot over the past several years. It peaked at 9.62 percent in mid-2022, during the sharpest inflation spike in decades, then fell as inflation cooled, settling into the 3.5 to 4.5 percent range more recently.

This history matters for a practical reason: an I bond you bought in 2022 is still earning interest based on whatever fixed rate applied at your purchase, combined with today's inflation adjustment, not the rate being advertised right now. Checking your own specific issue month on TreasuryDirect, rather than the current headline rate, is the only way to know what your existing bond is really earning.

The risk cuts the other way too. An I bond you buy today has no guarantee that future resets stay this high. If inflation keeps cooling, your composite rate falls with it, possibly down toward just the fixed-rate floor with little or no inflation component at all. An EE bond bought today doesn't carry that particular risk, since its rate is locked no matter what inflation does next.

EE bonds move far less dramatically, because only the fixed rate matters, and it's set once at purchase and never revisited for 20 years. TreasuryDirect's page on EE bonds_LINK confirms the doubling guarantee applies to every EE bond issued since May 2005, no matter how low the fixed rate looks at the time you buy.

4. Work Out What Your Savings Bond Is Actually Worth, Including the Early-Redemption Penalty

Choose a bond type, an amount, and how long you plan to hold it. This works out the real compounded value, the EE doubling guarantee if it applies, and, if you're redeeming inside the five-year penalty window, exactly how many dollars the three-month interest forfeiture costs you.

5. The $10,000 Savings Bond Limit Is Per Series, Not Combined

This is the single most common misunderstanding people have about US I bonds and EE bonds alike. The $10,000 electronic purchase limit applies separately to each series, per Social Security number, per calendar year.

That means one person can buy $10,000 in EE bonds and a separate $10,000 in I bonds in the same year. That's $20,000 of total capacity, not $10,000 combined.

Trusts and businesses each carry their own separate $10,000-per-series limit, under their own tax ID. A married couple, each with their own personal limit, can already reach $40,000 combined across both series, before even considering entity accounts.

Gifted bonds add one more layer. You can buy an unlimited dollar amount of bonds as gifts and hold them in a TreasuryDirect gift box indefinitely.

The gift only counts against the recipient's annual limit in the year you actually deliver it, not the year you bought it. That lets a giver front-load purchases in a strong-rate year and deliver them gradually over future years. The rate that applies, though, is whatever the bond was issued at, not the rate in the delivery year.

As of January 1, 2025, paper I bonds are no longer available through IRS tax refunds. Every new savings bond purchase, either series, is now electronic only, through a TreasuryDirect account, per TreasuryDirect's tax information for EE and I bonds_LINK.

6. How Savings Bonds Are Actually Taxed

The tax treatment is identical for both series, and it's one of their most underrated features.

• Federal tax: yes, but deferred. Interest is subject to federal income tax, but by default you don't owe anything until you redeem the bond or it reaches final maturity, whichever comes first. You can elect to report interest annually instead, which some parents do for bonds held in a child's name, to use the child's lower tax bracket. The default, though, is to defer.
• State and local tax: never. Savings bond interest is fully exempt from state and local income tax in every state, confirmed directly by Investor.gov's overview of savings bonds_LINK. That's a real, meaningful advantage if you're in a high state-tax bracket. It applies automatically, and most tax software backs the interest out of state taxable income once it's entered correctly as US government interest.
• Possible full exemption for education. If bond proceeds pay for qualified higher education expenses in the same year the bonds are cashed, some or all of the interest can be excluded from federal taxable income entirely, using IRS page on Form 8815, the education exclusion_LINK. This exclusion has real conditions: the bond owner must have been 24 or older on the bond's issue date, married-filing-separately status disqualifies you entirely, and the exclusion phases out above a modified adjusted gross income threshold that changes yearly. If bond proceeds exceed qualified expenses, only the proportional share of interest gets excluded, not all of it.

Redeeming a bond triggers a Form 1099-INT, showing the interest in Box 3, labeled "Interest on US Savings Bonds and Treasury Obligations." You have to report this interest even if the 1099 never shows up. The obligation exists either way.

7. Savings Bond Liquidity: The 12-Month Lock and the 5-Year Penalty

Both bond types share the exact same access rules, and they're less flexible than most savings vehicles.

The 12-month lock is absolute. There's no hardship exception, no early-withdrawal-with-fee option the way a CD sometimes offers.

The three-month interest penalty inside the first five years is smaller than it sounds if you're holding longer. Redeem at exactly 12 months, and it effectively costs you a quarter of a year's interest. Redeem at 24 months, and you lose the same flat three months regardless. So the penalty's relative bite actually shrinks the longer you wait past the one-year mark.

8. A Real Savings Bond Example: Same $10,000, Two Different Jobs

Marcus and Elena each have $10,000 to set aside in savings bonds this year, but for different reasons. That difference changes which bond actually fits.

Neither choice is wrong. They're just solving different problems.

Marcus needs his money to still buy roughly the same amount of house in three or four years. That's exactly what inflation protection is for.

Elena isn't worried about a dollar figure moving with inflation. She wants a number she can promise a teenager today and know it'll be true in 20 years. That's exactly what the EE guarantee gives her, and an I bond, with its variable rate, cannot.

9. How to Actually Buy a Savings Bond

• Open a TreasuryDirect savings bonds account at treasurydirect.gov. This is a direct account with the Treasury, not a brokerage account, and it's the only place electronic savings bonds are sold.
• Link a bank account for funding the purchase and receiving redemptions.
• Choose your series and amount, from $25 up to $10,000 per series per year, in any amount to the penny above the minimum.
• Know your issue date. Bonds bought by the last business day of a month are typically issued with that month's date, which starts your interest clock and your six-month I bond reset schedule.
• Consider the gift box if you want to pre-purchase for a spouse or child in a strong-rate year. Just remember, delivery timing decides whose annual limit it counts against.

Redeeming later runs through the same TreasuryDirect account. Log in, use ManageDirect, select the bond, and choose full or partial redemption. If you redeem only part of a bond's value, you'll need to leave at least $25 remaining.

10. Frequently Asked Questions

11. Final Thoughts

The choice between EE and I bonds really comes down to one question: do you want a guaranteed, exact number on a fixed date, or do you want your money to keep pace with whatever inflation actually does? EE bonds answer the first question. I bonds answer the second.

Neither is a replacement for a diversified investment portfolio, and the $10,000 annual limit per series keeps both playing a supporting role rather than a lead one in most people's finances.

One place they do fit well is as a second-tier emergency fund, money beyond your first few months of liquid savings that you're unlikely to need in the next year. The better rate and inflation protection are worth the reduced access there. As a genuinely risk-free place to park money for a specific multi-year purpose, few alternatives match them.

Before buying, confirm the current rate for your intended purchase month directly on TD_EE_LINK. The figures move twice a year, and the rate that applies is whichever one is current on your actual purchase date, not the date you happen to read this.

This article is for general information only and is not financial or tax advice. Rates, purchase limits, and rules described here reflect TreasuryDirect.gov, Investor.gov, and IRS.gov, read 16 August 2026. Interest rates for both bond series reset every May 1 and November 1 and will differ from the figures here after that; always confirm the current rate for your specific purchase month directly on TreasuryDirect.gov before buying. Figures in examples are illustrative, not guarantees of any specific outcome. Consult a tax professional for guidance specific to your situation, particularly around the education tax exclusion.Disclaimer.