🏦 I Bonds Complete Guide
I Bonds: The Inflation-Protected Savings Bond Explained
When inflation spiked in 2022, I Bonds briefly paid 9.62% — and millions of Americans discovered this obscure Treasury security for the first time. Here's everything you need to know about I Bonds, including when they make sense and when they don't.
✍️ DigitalWealthSource📅 April 2025⏱️ 8-10 min read✅ Fact-checked
I Bonds are one of the stranger financial products available to American investors — a savings bond issued by the US Treasury that adjusts its interest rate every 6 months based on inflation. In normal times, they're a moderately interesting savings vehicle that financial nerds discuss among themselves. In 2022, when inflation hit 9.1% and I Bonds briefly paid 9.62%, they became the most searched personal finance topic on the internet.
The 2022 frenzy has settled. I Bond rates are back to more modest levels. But they remain a genuinely useful product for specific purposes — and understanding exactly what they are and aren't prevents both over-enthusiasm and dismissal.
How I Bond Interest Rates Work
I Bond rates have two components that combine to create the composite rate you actually earn:
- Fixed rate: Set at purchase and stays constant for the life of the bond. Ranges from 0% to around 2% in recent years. This is the "real" return above inflation.
- Variable rate: Changes every 6 months (May and November) based on the prior 6 months of CPI data. This is what caused the 9.62% rate in 2022 — the variable component tracked the surge in inflation.
The composite rate formula: [fixed rate + (2 × semiannual inflation rate) + (fixed rate × semiannual inflation rate)]. In practice, the composite rate tracks inflation reasonably closely. The goal is to preserve purchasing power, not to generate real returns above inflation — though a positive fixed rate produces some real return.
The Key Rules and Limits
- Purchase limit: $10,000 per Social Security number per calendar year in electronic I Bonds through TreasuryDirect.gov. An additional $5,000 can be purchased with a tax refund in paper form. For a couple with a trust, purchase limits can be layered — consult TreasuryDirect's rules.
- Minimum hold period: 1 year — you cannot redeem I Bonds at all within the first 12 months of purchase.
- Early redemption penalty: If you redeem before 5 years, you forfeit the last 3 months of interest. After 5 years, there is no penalty.
- Maximum maturity: I Bonds continue earning interest for 30 years from issue date, then stop.
- Tax treatment: Federal income tax is deferred until redemption — a genuine advantage for bonds held long-term. Interest is exempt from state and local income tax. If used for qualifying educational expenses, the interest may be federal tax-exempt as well (income limits apply).
When I Bonds Make Sense — And When They Don't
I Bonds are excellent when:
- You have emergency fund money you won't need for at least 12–18 months earning less in a savings account than the I Bond rate
- You want a portion of your savings to be inflation-protected without market risk
- You're in a high federal tax bracket and the state tax exemption adds meaningful value
- You're saving for education expenses and meet the income requirements for the education exclusion
I Bonds are not ideal when:
- You need the money within 12 months (absolutely cannot access it)
- Current I Bond rates are below HYSA rates (they frequently are — check and compare)
- You want market-rate returns — I Bonds track inflation, not the stock market, and stocks have dramatically outperformed inflation over long periods
- You have high-interest debt — any guaranteed savings rate is beaten by paying down 20% credit card debt
💡 How to Check Current I Bond Rates
Visit TreasuryDirect.gov and click "I Bonds" for the current composite rate. New rates are announced in May and November. Compare the current I Bond rate to the best HYSA rates at our Best Rates tracker — when HYSA rates exceed the I Bond rate AND you might need the money, HYSA wins. When I Bond rates exceed HYSA rates AND you can commit to 12+ months, I Bonds may win.
💰 Compare Today's Best Savings Rates
See current I Bond rates alongside the best HYSA and CD rates — all in one place, updated monthly.
See Today's Best Rates →Frequently Asked Questions
Can I buy I Bonds as a gift?+
Yes. You can purchase I Bonds as gifts for others through TreasuryDirect, and the purchase counts against the recipient's $10,000 annual limit, not yours. Gift bonds must be delivered to the recipient's TreasuryDirect account, but they can be 'stored' in a gift box in your account for up to a year before delivery. This creates an interesting strategy: buy a gift bond now at a favorable rate, deliver it to the recipient next year.
Are I Bonds good for kids?+
I Bonds can be purchased for minor children in their own TreasuryDirect accounts (parents manage the account). The $10,000 limit applies per child as well, and the education exclusion rules apply if the child later uses them for qualified education expenses. One consideration: unlike 529 plans, I Bond interest is taxable (though deferrable), and the education exclusion phases out at higher income levels.
What happened to I Bonds after the 2022 frenzy?+
The composite rate dropped significantly as inflation receded. By late 2023 and into 2024, I Bond rates fell to 4–5% range — below the best HYSA rates available at the time. TreasuryDirect experienced significant backlogs and technical difficulties handling the surge in purchases. The lesson: I Bonds aren't always the best option; they're occasionally the best option when inflation is high and fixed rates are favorable.