Treasury bonds represent one of the safest investments available to individual investors, backed by the full faith and credit of the United States government. Whether you're looking for a place to park emergency funds, want to reduce portfolio volatility, or need inflation protection, understanding how to buy and use different Treasury securities is essential for building a resilient financial strategy.
This comprehensive guide walks you through purchasing Treasury bonds via TreasuryDirect.gov, implementing a T-bill ladder strategy, maximizing I-bond purchase limits, choosing between TIPS and nominal bonds, understanding secondary market purchases through brokerages, and navigating the favorable tax treatment these securities receive.
Before diving into the purchase process, you need to understand what you're buying. The U.S. Treasury issues four primary types of marketable securities available to individual investors, each serving different purposes in a portfolio.
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View on Amazon →T-bills are short-term securities with maturities of 4 weeks, 8 weeks, 13 weeks, 26 weeks, or 52 weeks. They're sold at a discount to their face value and don't pay periodic interest. Instead, you receive the full face value at maturity, with the difference representing your return. For example, you might pay $9,850 for a $10,000 T-bill, earning $150 over the holding period.
T-bills are ideal for cash you'll need within the next year, offering yields typically higher than high-yield savings accounts with comparable safety and liquidity.
T-notes have maturities ranging from 2 to 10 years and pay interest every six months at a fixed rate. When you buy a T-note, you receive regular coupon payments and your principal back at maturity. These work well for intermediate-term goals or as the bond allocation in a balanced portfolio.
TIPS are Treasury securities with principal values that adjust based on changes in the Consumer Price Index (CPI). As inflation rises, the principal increases, and you receive interest payments on the adjusted amount. At maturity, you receive either the adjusted principal or the original principal, whichever is greater. This built-in protection makes TIPS valuable when inflation concerns loom large.
I-bonds are non-marketable savings bonds that earn interest based on a combination of a fixed rate and an inflation rate that adjusts every six months. Unlike other Treasuries, I-bonds cannot be traded on the secondary market. You must hold them for at least 12 months, and redeeming them within five years results in forfeiting the last three months of interest.
TreasuryDirect is the U.S. government's online platform for buying Treasury securities directly from the source. The platform's interface feels outdated, but it's secure and allows you to purchase securities without paying brokerage fees.
Visit TreasuryDirect.gov and click "Open an Account." You'll need your Social Security number, a U.S. address, bank account information for linking, email address, and the ability to create security questions. The system requires you to remember detailed security answers, so store these securely in a password manager.
Once your account is created, link your bank account for funding purchases and receiving payments. This verification process can take a few days, so plan ahead if you want to buy specific securities at auction.
TreasuryDirect only allows purchases of new-issue securities at auction. You cannot buy existing securities on the secondary market through this platform. Auctions occur on a regular schedule: 4-week T-bills every week, 13-week and 26-week T-bills every week, 52-week T-bills every four weeks, and T-notes and TIPS at varying frequencies throughout the year.
You can submit a non-competitive bid, which means you agree to accept the yield determined at auction. This guarantees you'll receive the securities you requested. Competitive bidding, where you specify the yield you want, is generally unnecessary for individual investors and risks not having your bid filled.
From your TreasuryDirect account dashboard, navigate to "BuyDirect" and select the security type. Choose the amount (minimum $100, increasing in $100 increments), select non-competitive bidding, and schedule whether you want automatic reinvestment at maturity. Review your purchase details and submit before the auction deadline, typically the day before the auction date.
Your account will show pending transactions until the auction completes. Once settled, the securities appear in your holdings, and interest payments or maturity proceeds deposit directly to your linked bank account.
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A T-bill ladder provides an excellent alternative to parking large amounts of cash in savings accounts. By staggering maturity dates, you maintain regular access to funds while earning competitive yields across different time horizons.
The basic three-rung ladder works as follows: divide your cash allocation into three equal portions. Purchase 4-week, 13-week, and 26-week T-bills simultaneously. As each bill matures, reinvest the proceeds into a new 26-week bill. After the initial setup period, you'll have a T-bill maturing approximately every 8-9 weeks, providing regular liquidity.
For example, with $30,000 to invest, you'd purchase $10,000 of each maturity. When the 4-week bill matures in one month, reinvest that $10,000 into a new 26-week bill. When the original 13-week bill matures, do the same. This creates a rolling pattern where you consistently hold bills at different points along the maturity curve.
T-bill ladders often yield more than money market funds while maintaining similar safety and better state tax treatment. Money market funds charge expense ratios (typically 0.10% to 0.50%), reducing your net return. T-bills purchased through TreasuryDirect have no fees. Additionally, T-bill interest is exempt from state and local income taxes, providing extra value for investors in high-tax states.
The trade-off is reduced convenience. Money market funds offer same-day liquidity, while a T-bill ladder requires waiting for maturity or transferring to a brokerage to sell on the secondary market.
Series I Savings Bonds became widely popular when inflation surged in 2021-2022, offering rates above 9% at their peak. Understanding purchase limits and how rates are calculated helps you maximize this opportunity.
Each person with a Social Security number can purchase up to $10,000 in electronic I-bonds per calendar year through TreasuryDirect. Additionally, you can buy up to $5,000 in paper I-bonds using your federal tax refund by filing IRS Form 8888. This creates a total annual limit of $15,000 per individual.
Married couples can double this limit, with each spouse purchasing separately. You can also purchase I-bonds for children with Social Security numbers, allowing families to acquire substantial positions over time.
The I-bond rate consists of two components: a fixed rate set at purchase that never changes, and a variable inflation rate that adjusts every six months based on changes in CPI-U. The composite rate formula is: Composite Rate = Fixed Rate + (2 × Inflation Rate) + (Fixed Rate × Inflation Rate).
New I-bonds receive the current fixed rate available at purchase, which can be 0% or higher depending on Treasury policy. Your specific inflation rate adjusts every six months from your purchase date, not on the universal May 1 and November 1 dates.
For example, if you buy I-bonds in March 2024 with a 1.3% fixed rate and a 3.0% semiannual inflation rate, your initial composite rate would be approximately 7.59% annualized. Six months later in September, your rate would adjust based on the new inflation data, while keeping the 1.3% fixed component forever.
I-bonds must be held for a minimum of 12 months. If you redeem between 12 months and 5 years, you forfeit the last three months of interest. After 5 years, there's no penalty for redemption. This structure makes I-bonds suitable for emergency funds or medium-term savings, not short-term cash management.
| Feature | TreasuryDirect I-Bonds | High-Yield Savings | 1-Year CDs |
|---|---|---|---|
| Annual Purchase Limit | $10,000 electronic + $5,000 paper | Unlimited | Unlimited |
| Interest Rate Type | Fixed + Inflation-adjusted | Variable | Fixed |
| Minimum Hold Period | 12 months | None | Usually 3-12 months with penalty |
| State Tax Treatment | Exempt | Taxable | Taxable |
| Early Withdrawal Penalty | 3 months interest if < 5 years | None | Varies, often 3-6 months interest |
| Inflation Protection | Built-in CPI adjustment | None | None |
Deciding between TIPS and nominal Treasury securities requires understanding the break-even inflation rate and your inflation expectations over the holding period.
The market prices TIPS relative to nominal Treasuries based on expected inflation. The break-even inflation rate is the difference between nominal Treasury yields and TIPS yields of the same maturity. If actual inflation exceeds the break-even rate, TIPS will outperform nominal bonds. If inflation comes in lower, nominal bonds win.
For example, if a 10-year Treasury note yields 4.5% and a 10-year TIPS yields 2.0%, the break-even rate is 2.5%. If average annual inflation over the next decade exceeds 2.5%, TIPS would provide a better real return.
TIPS are most valuable when you expect inflation to surprise to the upside, when you want to lock in a real (inflation-adjusted) return, or when you're in the retirement distribution phase and need purchasing power protection. They're particularly attractive when break-even rates are low relative to your inflation forecast.
TIPS also eliminate inflation risk from your bond allocation. Even if nominal bonds offer higher yields today, unexpected inflation can erode your purchasing power. TIPS guarantee a real return regardless of inflation outcomes.
Most investors should hold primarily nominal Treasuries because they offer higher stated yields and perform well when inflation stays moderate. They also benefit more from falling inflation or deflation scenarios. If you believe current inflation will decline toward the Fed's 2% target, nominal bonds capture the full coupon without giving up yield for inflation protection you don't need.
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While TreasuryDirect serves as the government's official platform, major brokerages like Fidelity, Vanguard, and Schwab also offer Treasury bond purchases. Each approach has distinct advantages.
Brokerages provide easier portfolio management by consolidating all investments in one place. You can buy existing Treasuries on the secondary market at any time, not just at auction. This allows you to target specific yields or maturities that fit your needs precisely. Selling before maturity is straightforward—simply place a sell order during market hours.
Brokerages also offer better account features, including easier beneficiary designations, integration with tax software, and modern user interfaces. For investors building bond ladders with multiple securities, brokerages make tracking and management significantly simpler.
TreasuryDirect remains the only option for purchasing I-bonds, which are not available through any brokerage. If I-bonds form a key part of your strategy, you'll need a TreasuryDirect account regardless.
TreasuryDirect also guarantees you'll buy at auction prices without bid-ask spreads. When purchasing new-issue securities, you typically get slightly better pricing than buying the same security moments later on the secondary market through a broker, though the difference is usually minimal.
Many sophisticated investors maintain accounts on both platforms: TreasuryDirect for I-bonds and specific auction purchases, and a brokerage account for T-bills, T-notes, and TIPS that integrate with their broader portfolio. This provides maximum flexibility while optimizing for each platform's strengths.
One of Treasury securities' most valuable features is their favorable tax treatment, particularly for investors in high-tax states.
All interest income from Treasury securities is subject to federal income tax at ordinary income rates. This includes the discount earned on T-bills (the difference between purchase price and face value), semiannual interest payments from T-notes and nominal bonds, and the inflation adjustments on TIPS.
For TIPS, you owe federal tax annually on both the coupon payments and the principal inflation adjustment, even though you don't receive the principal adjustment until maturity. This creates a potential cash flow issue called "phantom income." Consider holding TIPS in tax-deferred retirement accounts to avoid annual tax on unrealized inflation adjustments.
Treasury interest is fully exempt from state and local income taxes. For residents of high-tax states like California (up to 13.3%), New York (up to 10.9%), or New Jersey (up to 10.75%), this exemption significantly enhances after-tax returns.
A 5.0% Treasury yield in California is equivalent to a taxable bond yielding approximately 5.76% after accounting for state tax savings. Always calculate the tax-equivalent yield when comparing Treasuries to corporate bonds, CDs, or other taxable fixed-income investments.
I-bonds offer a special education tax exclusion. If you use I-bond redemption proceeds to pay for qualified higher education expenses, and you meet income limitations, the interest may be entirely tax-free at the federal level. This makes I-bonds particularly attractive for education savings, though 529 plans generally offer more flexibility and higher contribution limits.
Building a resilient bond portfolio requires more than just buying Treasuries. Our Bond Investing Guide covers duration management, credit analysis, municipal bonds, corporate bond selection, and advanced strategies like bond laddering and barbell portfolios.
Learn how to construct a fixed-income allocation that protects your portfolio during stock market downturns while generating reliable income. Get instant access to spreadsheet calculators, yield-to-maturity worksheets, and tax-equivalent yield tools.
Get the Bond Investing Guide →For T-bills, T-notes, and T-bonds, the minimum purchase is $100 through TreasuryDirect.gov. I-bonds also have a $100 minimum, with a maximum of $10,000 per person per year in electronic bonds, plus an additional $5,000 in paper I-bonds using your tax refund.
TreasuryDirect is best for buying new issues at auction and for I-bonds, which are only available there. Brokerages are better for buying existing Treasuries on the secondary market, selling before maturity, and for easier portfolio management with your other investments.
A T-bill ladder involves buying T-bills with staggered maturity dates, such as 4-week, 13-week, and 26-week bills. As each bill matures, you reinvest the proceeds into a new bill at the longest duration. This provides regular liquidity while maintaining higher yields than a savings account.
TIPS are Treasury Inflation-Protected Securities that adjust their principal based on CPI inflation. They're best when you expect inflation to exceed the break-even rate implied by the yield difference between TIPS and nominal Treasuries. They provide insurance against unexpected inflation.
No. Treasury bond interest is exempt from state and local income taxes, though you must pay federal income tax on the interest. This makes Treasuries more attractive than other bonds for investors in high-tax states like California, New York, and New Jersey.
You can purchase up to $10,000 in electronic I-bonds per Social Security number per calendar year through TreasuryDirect. You can also buy an additional $5,000 in paper I-bonds using your federal tax refund, for a total of $15,000 per person annually.
I-bond rates change every six months on May 1 and November 1, based on CPI inflation data. The rate consists of a fixed rate that never changes and a variable inflation rate that adjusts. Check TreasuryDirect.gov for the current composite rate before purchasing.
Yes, but the process differs. With TreasuryDirect, you must transfer bonds to a brokerage to sell them on the secondary market. If you bought through a brokerage, you can sell anytime during market hours. I-bonds cannot be sold but can be redeemed after 12 months, with a 3-month interest penalty if redeemed before 5 years.