Quick Answer: Treasury bonds and I-Bonds are U.S. government-backed investments offering virtually zero default risk. I-Bonds adjust their rate with inflation (currently earning around 3-5% depending on the inflation component), while Treasury bills and notes offer fixed yields of 4-5% in the current rate environment. Both are excellent for emergency funds, short-term savings, and the conservative portion of your portfolio, purchased directly through TreasuryDirect.gov with no fees.
Key Takeaways
- I-Bonds adjust with inflation, protecting your purchasing power — current composite rate is around 3-5%
- Treasury bills (T-bills) mature in 4-52 weeks and currently yield 4.5-5.0% — better than most savings accounts
- Both are backed by the U.S. government — the safest debt instruments in the world
- I-Bond purchase limit is $10,000 per person per year (electronic) via TreasuryDirect.gov
- Interest from Treasuries is exempt from state and local taxes, boosting after-tax returns
Series I Savings Bonds (I-Bonds) combine a
Series I Savings Bonds (I-Bonds) combine a fixed rate (set at purchase, lasts 30 years) with a variable inflation rate that adjusts every 6 months based on CPI data. When inflation is high, I-Bonds pay more; when inflation is low, they pay less — but the composite rate can never go below zero. You buy them directly from TreasuryDirect.gov at face value with no fees or commissions. The annual purchase limit is $10,000 per person per year in electronic bonds (plus up to $5,000 in paper bonds via tax refund). You must hold I-Bonds for at least 12 months, and if you redeem before 5 years, you forfeit the last 3 months of interest. After 5 years, there's no penalty. I-Bonds are ideal for inflation-protected savings you won't need for 1-5+ years.The U
The U.S. Treasury issues debt at various maturities, all backed by the full faith and credit of the U.S. government. T-bills mature in 4, 8, 13, 17, 26, or 52 weeks — they're sold at a discount and you receive face value at maturity, with the difference being your return. T-notes mature in 2, 3, 5, 7, or 10 years, paying semiannual interest. T-bonds mature in 20 or 30 years with semiannual interest. In the current rate environment, short-term T-bills yield 4.5-5.0% — competitive with or better than high-yield savings accounts, with the advantage of state tax exemption. You can buy Treasuries directly through TreasuryDirect.gov or through your brokerage (Fidelity, Schwab, and Vanguard all offer Treasury purchases with no commission).For savings you won't need for 1+
For savings you won't need for 1+ years, I-Bonds offer a unique advantage: they automatically adjust with inflation, so your real (inflation-adjusted) purchasing power is preserved regardless of what happens to prices. A high-yield savings account (HYSA) currently pays 4.5-5.0% APY but could drop if the Fed cuts rates. A CD locks in a rate for 6-60 months but may lag if inflation spikes. I-Bonds cover the inflation scenario that HYSAs and CDs can't — they're insurance against purchasing power erosion. The tradeoff: I-Bonds are illiquid for 12 months and penalized for 5 years, while HYSAs are instantly liquid. The optimal strategy: keep 3-6 months of expenses in a HYSA for true emergencies, then use I-Bonds and short-term Treasuries for savings beyond your emergency fund.Treasury interest is exempt from state and
Treasury interest is exempt from state and local income taxes — only federal tax applies. In high-tax states like California (13.3%), New York (10.9%), or New Jersey (10.75%), this exemption significantly boosts after-tax returns. A Treasury yielding 5.0% in California is equivalent to a 5.77% fully-taxable yield after accounting for the state tax exemption. For I-Bonds, you can also defer federal tax on the interest until you redeem the bond (up to 30 years), allowing tax-deferred compound growth. If you use I-Bond proceeds for qualified education expenses, the interest may be entirely tax-free at the federal level as well, subject to income limits.Creating a TreasuryDirect
Creating a TreasuryDirect.gov account takes about 10 minutes. You'll need your SSN, bank routing and account numbers, and an email address. The interface is dated and clunky, but it works. For I-Bonds: log in, select 'BuyDirect,' choose Series I bonds, enter the purchase amount ($25-$10,000), and submit. The purchase debits your linked bank account within a few days. For T-bills via TreasuryDirect: you can schedule purchases through auction or buy in the secondary market through your brokerage. Most investors find buying Treasuries through their existing Fidelity, Schwab, or Vanguard accounts easier than using TreasuryDirect, especially for T-bills and T-notes.Treasuries serve different roles depending on the
Treasuries serve different roles depending on the maturity. T-bills (4-52 weeks) function as enhanced cash — park money you'll need in 1-12 months and earn better than a checking account. I-Bonds (hold 1-30 years) protect against inflation for medium-term savings goals. T-notes (2-10 years) anchor the bond portion of a diversified investment portfolio. A practical allocation for a conservative saver: emergency fund in HYSA (3 months expenses) + $10,000/year into I-Bonds + T-bill ladder (rolling 4-week or 13-week bills) for additional cash reserves. For investors using the three-fund portfolio, the bond fund (BND) already holds Treasuries alongside corporate bonds — adding individual Treasuries on top provides extra safety and tax advantages.| Investment | Current Yield | Term | Tax Treatment | Liquidity |
|---|---|---|---|---|
| I-Bonds | ~3-5% (varies) | 1-30 years | State tax exempt, federal deferrable | Locked 12 months, penalty < 5 yrs |
| T-Bills | 4.5-5.0% | 4-52 weeks | State tax exempt | High (sell before maturity) |
| T-Notes | 4.0-4.5% | 2-10 years | State tax exempt | High (sell before maturity) |
| HYSA | 4.5-5.0% | None (liquid) | Fully taxable | Instant |
| CD | 4.0-5.0% | 3-60 months | Fully taxable | Early withdrawal penalty |
Our Methodology
Treasury yields reflect current market rates as of April 2026. I-Bond composite rates reflect the most recent Treasury Department announcement. Tax advantage calculations use top state marginal rates. All government securities are subject to interest rate risk if sold before maturity. HYSA and CD rates represent nationally available online bank offerings.
Frequently Asked Questions
Who is this guide designed for?
This guide is for anyone looking to improve their financial situation, from beginners to experienced individuals. We explain concepts clearly with actionable steps.
How much money do I need to get started?
Many strategies here require little or no upfront cost. Where money is needed, we note minimums and offer alternatives for different budgets.
How quickly will I see results?
Some strategies produce immediate benefits; others build wealth over months or years. We indicate the expected timeline for each recommendation.
Are there risks I should know about?
We highlight potential downsides throughout the article. No financial strategy is risk-free, but we focus on approaches with favorable risk-reward profiles.
Where can I learn more?
WalletGrower has an extensive library of guides, calculators, and comparison tools. Check related articles below or use our search tool to explore specific topics.
Explore Safe, Government-Backed Investments
Learn how to buy I-Bonds, T-bills, and Treasury notes to protect your savings from inflation and earn competitive returns with zero default risk.
Disclosure: Some links in this article may be affiliate links. We may earn a commission at no extra cost to you.