I Bonds are one of the safest investments available, backed by the US government and protected against inflation. They received massive attention during the high-inflation years of 2022-2023, but remain a smart part of a diversified savings strategy.
How I Bonds Work
I Bond rates have two components:
| Component | Current Rate | How It’s Set |
|---|---|---|
| Fixed rate | 1.20% | Set at purchase, stays forever |
| Inflation rate | 2.48% | Changes every 6 months based on CPI |
| Composite rate | 3.68% | Combined rate you actually earn |
The fixed rate is locked in at purchase and never changes. The inflation rate adjusts every 6 months (May and November) based on the Consumer Price Index.
Composite Rate Formula
Composite Rate = Fixed Rate + (2 × Semiannual Inflation Rate) + (Fixed Rate × Semiannual Inflation Rate)
I Bond Purchase Limits and Rules
| Rule | Details |
|---|---|
| Purchase limit | $10,000/person/year (electronic) + $5,000/year (paper via tax refund) |
| Where to buy | TreasuryDirect.gov (electronic), IRS tax refund (paper) |
| Minimum purchase | $25 (electronic), $50 (paper) |
| Minimum hold period | 12 months |
| Early redemption penalty | If redeemed before 5 years, lose last 3 months of interest |
| Maximum hold period | 30 years |
| Tax treatment | Federal income tax only (exempt from state/local tax) |
| Tax deferral | Can defer interest until redemption |
Maximizing I Bond Purchases
| Method | Annual Amount |
|---|---|
| Individual (electronic) | $10,000 |
| Individual (paper via tax refund) | $5,000 |
| Spouse (electronic) | $10,000 |
| Spouse (paper via tax refund) | $5,000 |
| Trust (electronic) | $10,000 |
| LLC/Business (electronic) | $10,000 |
| Maximum per couple | $30,000 (or $50,000+ with entities) |
I Bond Rate History
| Period | Composite Rate | Fixed Rate | Inflation Rate |
|---|---|---|---|
| Nov 2026 | 3.68% | 1.20% | 2.48% |
| May 2026 | 3.45% | 1.20% | 2.25% |
| Nov 2025 | 3.11% | 1.20% | 1.91% |
| May 2025 | 3.98% | 1.30% | 2.68% |
| Nov 2024 | 3.11% | 1.20% | 1.91% |
| May 2024 | 4.28% | 1.30% | 2.96% |
| Nov 2023 | 5.27% | 1.30% | 3.94% |
| May 2023 | 4.30% | 0.90% | 3.38% |
| Nov 2022 | 6.89% | 0.40% | 6.48% |
| May 2022 | 9.62% | 0.00% | 9.62% |
I Bonds vs. Other Safe Investments
| Investment | Current Rate | Risk | Liquidity | Inflation Protection | Tax Advantages |
|---|---|---|---|---|---|
| I Bonds | 3.68% | None | 12-month lock, then anytime | Yes (built in) | State tax exempt, can defer federal |
| High-yield savings | 4.0–5.0% | None | Instant | No (rate may drop) | None |
| 1-Year CD | 4.0–5.0% | None | Locked (penalty) | No | None |
| Treasury Bills (1-yr) | 4.3–4.8% | None | At maturity | No | State tax exempt |
| TIPS (Treasury) | 2.0% + inflation | Very low | Market-based | Yes | State tax exempt |
| Money Market Fund | 4.5–5.2% | Very low | 1 day | No | None |
When I Bonds Are the Best Choice
- Building an emergency fund you won’t touch for 12+ months
- Saving for a goal 1-5 years away
- Adding inflation protection to your portfolio
- Maximizing state tax savings (no state/local tax on I Bond interest)
When Other Options Are Better
- Need access within 12 months → high-yield savings
- Want the highest current rate → T-bills or money market
- Investing for 10+ years → stocks/index funds
- Need more than $10,000 of inflation protection → TIPS
Tax Strategies for I Bonds
Option 1: Defer Interest (Default)
- Pay no taxes until you redeem the bonds
- Good for: Most investors, those in high tax brackets now who expect lower brackets later
Option 2: Report Interest Annually
- Pay taxes each year on accrued interest
- Good for: Children’s accounts (using the child’s lower tax rate)
Option 3: Education Tax Exclusion
If used for qualified education expenses, interest may be completely tax-free:
- Must be at least 24 years old when bonds were purchased
- Used for qualified higher education expenses for you, spouse, or dependents
- Income limits apply (phased out at higher incomes)
How to Buy I Bonds on TreasuryDirect (Step-by-Step)
TreasuryDirect.gov is the only place to buy electronic I Bonds. The site looks dated (designed in the 2000s) but works fine. Here is the full process:
Step 1: Create a TreasuryDirect Account
| What You Need | Details |
|---|---|
| Social Security number | Required for account registration |
| US bank account | Checking or savings, for funding purchases |
| Email address | Used for account notifications |
| US address | Must be a US citizen or resident |
| Time required | 10-15 minutes |
Go to TreasuryDirect.gov → click “Open an Account” → select “Individual” → complete the form. You’ll set up a password and three security questions. Important: TreasuryDirect uses a virtual keyboard for password entry — the interface is unusual but intentional for security.
Step 2: Link Your Bank Account
After account creation, you’ll link a checking or savings account using your routing number and account number. This is the account your I Bond purchases will be debited from and your redemptions will be deposited to.
Step 3: Buy Your I Bonds
Navigate to BuyDirect → Select Series I → Enter your purchase amount ($25 minimum, $10,000 maximum per calendar year). You can buy in any increment, including cents (e.g., $3,127.58). Confirm the purchase. Funds are typically debited within 1-2 business days.
Step 4: Track Your Bonds
Under “Current Holdings,” you can view all your I Bonds, their current value, purchase date, and current interest rate. The dashboard shows the composite rate and when it resets.
Common TreasuryDirect Issues
| Issue | Solution |
|---|---|
| Forgot password | Call 844-284-2676 (no online password reset) |
| Account locked | Same phone number — requires identity verification |
| Virtual keyboard confusing | Use a desktop browser, not mobile |
| Slow site | Normal — the site runs slowly, especially at peak times |
| Can’t find I Bonds option | BuyDirect → Series I (not Series EE) |
Paper I Bonds (Tax Refund Only)
| Step | Details |
|---|---|
| 1. File your federal tax return | Must be owed a refund |
| 2. Complete IRS Form 8888 | Part I — allocate refund across accounts and bonds |
| 3. Designate bond amount | Up to $5,000, in $50 increments |
| 4. Wait | Paper bonds arrive by mail in 3-4 weeks |
| 5. Keep them safe | Paper bonds can be converted to electronic at TreasuryDirect |
I Bond Redemption Strategy
| Timeline | Action |
|---|---|
| Before 12 months | Cannot redeem |
| 12 months–5 years | Can redeem, but lose last 3 months of interest |
| After 5 years | Redeem anytime with no penalty |
| 25-30 years | Bonds stop earning interest at 30 years; redeem at that point |
Optimal timing: Redeem at the start of a month (interest is credited monthly). After 5 years, there’s no penalty, so redeem whenever you need the money.
Tax Timing on Redemption
When you redeem an I Bond, all accrued interest becomes taxable in that calendar year. If you’ve been deferring federal tax for years, a large redemption can push you into a higher bracket. Strategies to manage this:
| Strategy | Details |
|---|---|
| Partial redemptions | Spread over multiple tax years to stay in a lower bracket |
| Low-income year redemptions | Redeem in years with lower income (job gap, early retirement) |
| Education exclusion | If eligible, interest may be fully excluded from federal tax |
| Roth conversion year | Avoid redeeming large I Bond amounts in years you’re also doing Roth conversions — both add to taxable income |
2026 I Bond Outlook: Is Now a Good Time to Buy?
I Bonds pay 3.68% in 2026 — a solid return for a risk-free investment, but lower than the 9.62% peak in May 2022 when inflation was surging. Whether they make sense now depends on your situation.
I Bond Case Study: Emergency Fund Supplement
Many financial planners recommend I Bonds as a “Tier 2 emergency fund” — money beyond your immediate 3-month liquid cushion that you won’t need for at least 12 months.
| Tier | Account | Amount | Access Speed | Rate (2026) |
|---|---|---|---|---|
| Tier 1 | High-yield savings | 3 months expenses | Instant | 4.0–5.0% |
| Tier 2 | I Bonds | 3-6 months expenses | 12+ months | 3.68% (inflation-adjusted) |
| Tier 3 | Taxable brokerage | Long-term goals | 1-3 days | Market returns |
2026 Comparison: I Bonds vs. Competing Options
| Option | Rate | Risk | Lock-Up | Annual Limit |
|---|---|---|---|---|
| I Bonds | 3.68% (variable) | Zero | 12 months | $10,000 |
| 12-month CD | 4.2–5.0% (fixed) | FDIC insured | 12 months | None |
| 1-year T-Bill | 4.3–4.8% (fixed) | Zero | 52 weeks | None |
| HYSA | 4.0–5.0% (variable) | FDIC insured | None | None |
| Money market | 4.5–5.2% (variable) | Very low | None | None |
The honest I Bond calculus in 2026: HYSAs and T-Bills currently offer higher rates with equal or greater liquidity. The core I Bond advantage today is the state tax exemption (worth 2.5-13.3% extra depending on your state rate) and the inflation guarantee — even if CPI jumps to 8%, your I Bond rate follows, while your CD or HYSA rate stays fixed.
Best argument for I Bonds in 2026: You live in a high-income-tax state (California, New York, Oregon) and want guaranteed inflation protection on a portion of your emergency fund or medium-term savings.
Best argument against I Bonds in 2026: You need access within 12 months, you want a higher current rate (T-bills win on yield), or you’ve already maxed your $10,000 annual limit.
Building an I Bond Ladder
Since you can buy $10,000/year, build a position over time:
| Year | Annual Purchase | Cumulative I Bond Holdings |
|---|---|---|
| Year 1 | $10,000 | $10,000 |
| Year 2 | $10,000 | $20,700 |
| Year 3 | $10,000 | $31,700 |
| Year 4 | $10,000 | $43,200 |
| Year 5 | $10,000 | $55,000+ |
After year 5, your oldest I Bonds can be redeemed penalty-free, giving you access to $10,000+ per year while keeping the rest invested.
Related: High-Yield Savings Accounts | CD Rates | HYSA vs Treasury Bills | I Bonds vs Treasury Bonds
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