Savings Bonds and I Bonds

I Bonds (Series I Savings Bonds) and EE Bonds (Series EE Savings Bonds) are simplified government savings vehicles designed for small savers and those seeking tax deferral. Unlike Treasury notes or bonds, these are non-transferable (you cannot sell them); you can only redeem them. I Bonds have inflation-linked rates—the interest rate comprises a fixed component plus an inflation component that resets every six months. EE Bonds have a fixed rate. Both are limited to $10,000 per person per calendar year (I Bonds) and offer tax deferral until redemption, making them valuable for education savings and emergency funds.

Key takeaways

• I Bonds have inflation-linked rates (fixed rate + inflation premium) reset every six months
• EE Bonds have a fixed rate that never changes; after 20 years, the Treasury guarantees a minimum doubling of principal
• Both are purchased at face value and cannot be sold; you can only redeem them after holding for at least one year
• Early redemption (before 5 years) incurs a 3-month interest penalty
• Annual purchase limit is $10,000 per person per bond type (I Bonds and EE Bonds separately)
• Interest accrues and is not paid out until redemption; taxes can be deferred until that time

I Bonds: inflation-linked savings

I Bonds are uniquely suited to inflation-conscious savers. The interest rate has two components:

1. Composite rate = Fixed rate + Inflation rate

The Treasury announces a new composite rate every six months (May 1 and November 1). As of May 2024, the I Bond composite rate is 5.27% (fixed rate of 1.06% + inflation component of 4.21%). This rate locks in for six months; on November 1, a new rate takes effect based on the latest inflation data.

When you buy an I Bond, you lock in the composite rate for six months. If you hold for six months and one day, the new rate applies to your next six-month interest accrual. If you hold for six months exactly, you miss the rate reset and exit with one less day of interest at the current rate (a technicality, but worth noting).

The fixed component of the I Bond rate is determined at the time of purchase and never changes over the life of the bond. The inflation component resets every six months based on the latest consumer price index. This design ensures your purchasing power is protected: if inflation spikes, the inflation component rises, and your rate rises with it.

EE Bonds: a different flavor

EE Bonds have a single fixed rate (not split between fixed and inflation components) that applies for the entire 30-year life of the bond. As of May 2024, the EE Bond rate is 2.10% per year. This is lower than the current I Bond rate but offers certainty: your rate is locked in and never changes.

EE Bonds include a special guarantee: if you hold for 20 years, the Treasury guarantees the value will at least double. If the accumulated interest doesn't get you to double your principal, the Treasury makes up the difference. This guarantee is meant to be a safety net for long-term holders, but in practice, the fixed rate of 2.10% compounds to roughly 1.55x your original principal in 20 years, so the doubling guarantee is likely to be triggered (you'd benefit from an extra 45% to reach double).

Purchasing I Bonds and EE Bonds

Both bond types are available exclusively through TreasuryDirect.gov. You cannot buy them from brokerages or banks. To purchase, you create an account, link a bank account, and submit orders during the designated purchase windows. I Bonds can be purchased at any time; EE Bonds have a more limited purchase window.

You buy the bonds at face value: a $10,000 I Bond costs $10,000. The interest accrues over time and is reflected in the redemption value. For example, if you buy a $10,000 I Bond at a 5.27% rate and hold for two years (assuming the rate stays constant, which is unlikely), the value grows to $10,500 × 1.0527 = approximately $10,541 (rough calculation; the actual accrual is monthly, so the compounding is slightly more favorable).

Annual purchase limits and strategies

The annual purchase limit is $10,000 per person per bond type. This means you can buy $10,000 in I Bonds and $10,000 in EE Bonds in the same year. If you're married, your spouse can also buy $10,000 in each, for a combined $40,000 family total. Some investors strategically max out their I Bond purchases each year, treating them as an inflation-protected savings component.

Additional rules:

• You can also buy up to $5,000 in I Bonds with your tax refund (via IRS Form 8888)
• Bonds purchased in January can be redeemed as early as February (after one year)
• Bonds purchased in December can be redeemed as early as January of the next calendar year (also one year from purchase)

The early redemption penalty and holding period

Both I Bonds and EE Bonds require a minimum one-year holding period before redemption. If you redeem before five years, you lose the last three months of interest. This penalty encourages longer holding and is the Treasury's way of keeping these instruments "sticky" savings vehicles.

For example:

• You buy a $10,000 I Bond on January 15, 2024
• On January 20, 2025, you can redeem it (after one year), but you lose three months of interest
• On January 15, 2029 (five years), you can redeem with no penalty
• After five years, you can redeem anytime with no penalty

Because of this penalty, I Bonds are best suited to money you won't need for at least a few years. For true emergency funds, money-market accounts are preferable (instant access, no penalties). For education savings with a 5–10 year time horizon, I Bonds are ideal.

Tax deferral and education benefits

Interest on I Bonds and EE Bonds accrues and is not paid out until you redeem the bonds. This allows tax deferral: you do not owe federal income tax on the interest until the year you redeem. For long-term education savings, this can be valuable.

Even better: if you redeem I Bonds or EE Bonds to pay for qualified education expenses (tuition and fees at eligible colleges and universities), the interest portion of the redemption may be entirely tax-free (under the Education Savings Bond Program). This is a rare tax break. For example:

• You buy $5,000 in I Bonds for your child's college fund in 2024
• Over 10 years, the bonds grow to $6,500
• You redeem them in 2034 to pay tuition
• The $1,500 in interest is entirely federal-tax-free if your modified adjusted gross income is below certain limits

(Note: there are income phase-out limits; high-income earners may not qualify for the full exemption.)

Real yields on I Bonds vs. inflation

The real yield on an I Bond is equal to the fixed component. If the fixed component is 1.06% (as in May 2024), your real yield is 1.06% per year. You're guaranteed to earn 1.06% real return no matter what inflation does. This is attractive when real yields on nominal Treasuries are near zero or negative.

Compare the May 2024 situation:

• I Bond fixed component: 1.06% (real yield)
• 10-year Treasury yield: ~4.3% (nominal)
• 10-year TIPS yield: ~1.4% (real, with monthly compounding)
• I Bond composite yield: 5.27% (but only semi-annual resets)

The I Bond's 1.06% real yield is lower than TIPS' 1.4%, and the composite 5.27% rate is equal to the T-bill rate (not better). So I Bonds are not always the best inflation hedge or the highest-yielding savings vehicle, but they offer simplicity, tax deferral, and a hard cap on interest-rate risk.

I Bonds vs. EE Bonds: which to choose?

Choose I Bonds if:

• You expect inflation to remain high or are uncertain about future inflation
• You want maximum protection of purchasing power
• You can commit to holding for at least 5 years (to avoid the early redemption penalty)

Choose EE Bonds if:

• You want a guaranteed fixed return with no inflation uncertainty
• The current EE Bond rate (2.10%) looks attractive relative to fixed-rate Treasuries
• You have a 20-year time horizon and want the doubling guarantee

As of 2024, I Bonds offer higher yields (5.27% vs. 2.10%), but that advantage is driven by high inflation expectations. If inflation falls to 2%, the I Bond rate will reset lower, while EE Bond rates stay at 2.10%. The choice depends on your inflation outlook.

Series I Bond examples and math

Let's walk through a concrete example:

• Purchase date: June 1, 2024
• Amount: $10,000
• Current composite rate: 5.27% (1.06% fixed + 4.21% inflation)
• Rate locked in for: 6 months (until November 1, 2024)

Interest accrual:

• After 6 months: $10,000 × (1.0527)^(6/12) = approximately $10,259

On November 1, 2024, suppose the new inflation component is 3.50%. The new composite rate becomes 1.06% + 3.50% = 4.56%. Interest for the next six months:

• After 12 months total: $10,259 × (1.0456)^(6/12) = approximately $10,493

If you redeem at 12 months, you lose three months of interest (roughly $50), so you receive $10,443. If you hold to 5 years, no penalty, and you continue to accrue interest at whatever rates are announced during those five years.

I Bonds and inflation expectations

The I Bond rate has moved significantly over time. In 2021, when inflation was low, the composite rate was 0.54% (fixed 0.00% + inflation 0.54%). By late 2022, as inflation soared, it reached 5.27%. By early 2024, as inflation fell, the rate drifted to 5.27% (and may continue falling if inflation moderates further).

Historical data shows that I Bond real yields (the fixed component) have ranged from 0% to 1.5%. This is not especially high, but it's positive, which is valuable. EE Bond rates have been set by the Treasury based on prevailing interest rates; they're typically lower than concurrent T-bill rates to account for the 20-year doubling guarantee.

Tax considerations and state tax exemption

Interest on I Bonds and EE Bonds is subject to federal income tax but exempt from state and local income taxes. This state-tax exemption is valuable in high-tax states like California and New York. However, because the interest is deferred until redemption, you only pay state taxes in the year of redemption, not annually.

If you redeem bonds in a low-income year (e.g., retirement, sabbatical, business loss), the effective tax rate on the interest is lower, which is another reason to treat I Bonds as long-term savings.

Limitations and when not to buy

I Bonds and EE Bonds are not suitable for:

• Short-term savings or emergency funds (one-year minimum holding, early redemption penalty)
• Investors needing current income (no interim coupon payments; interest only upon redemption)
• High-yield seekers in low-rate environments (rates are typically lower than concurrent T-bill rates)
• Large savers (the $10,000 annual limit is restrictive)

For these cases, T-bills, money-market funds, or Treasury notes are better choices.

Conclusion: a niche but valuable tool

I Bonds are valuable for inflation-conscious savers with multi-year time horizons and low to moderate income. EE Bonds appeal to those seeking a fixed return and the psychological comfort of a 20-year doubling guarantee. Both offer tax deferral and state-tax exemption, making them especially suited to education savings accounts. For most investors, they should occupy a small allocation ($0–$10,000 per year) as part of a diversified savings strategy, not as the core of a bond allocation.

I Bond decision flowchart

Related concepts

• What Government Bonds Are
• Treasury Bills (T-Bills)

Next

Stripped Treasuries (STRIPS) are Government-backed zero-coupon bonds created by separating the coupons and principal of regular Treasuries; they offer high duration and are useful for matching long-term liabilities.