Investing in US Treasury securities is one of the safest ways to grow your money while supporting the federal government. Many people believe you need thousands of dollars to start investing, but that is not true. Through TreasuryDirect, the official platform of the US Department of the Treasury, you can begin investing with as little as $100. This guide will walk you through every step of the process, making it simple even for complete beginners.

US Treasury securities are backed by the full faith and credit of the United States government, making them one of the lowest-risk investments available. Whether you want to save for a short-term goal, build an emergency fund, or diversify your investment portfolio, Treasury securities offer flexibility and security that few other investment vehicles can match.

What You Will Learn

In this comprehensive guide, you will discover how to open a TreasuryDirect account, choose the right type of Treasury security for your goals and budget, make your first purchase with a small amount of money, and manage your investments over time. You will also learn practical tips for maximizing returns, common mistakes that beginners make, and answers to frequently asked questions about investing in US Treasuries with limited capital.

Step 1: Understanding US Treasury Securities

Before you invest, you need to understand what you are buying. According to the US Department of the Treasury, there are several types of Treasury securities available to individual investors (TreasuryDirect, 2026).

Treasury Bills (T-Bills) are short-term securities that mature in one year or less. They are sold at a discount, meaning you pay less than the face value and receive the full amount when they mature. The minimum purchase is $100, and they come in terms of 4 weeks, 8 weeks, 13 weeks, 26 weeks, and 52 weeks. T-Bills do not pay regular interest but instead provide returns through the difference between the purchase price and face value.

Treasury Notes (T-Notes) are medium-term securities with maturities of 2, 3, 5, 7, or 10 years. They pay interest every six months at a fixed rate and require a minimum investment of $100. T-Notes are ideal for investors who want regular income while keeping their principal safe.

Treasury Bonds (T-Bonds) are long-term securities with maturities of 20 or 30 years. Like T-Notes, they pay interest semiannually and have a $100 minimum. These are best for long-term goals like retirement planning, as they lock in rates for decades.

Treasury Inflation-Protected Securities (TIPS) protect your investment against inflation. The principal value adjusts based on changes in the Consumer Price Index, and you receive interest payments twice a year based on the adjusted principal. TIPS come in 5, 10, and 30-year terms with a $100 minimum.

Series I Savings Bonds combine a fixed interest rate with an inflation rate that adjusts every six months. You can buy them for as little as $25, and they earn interest for up to 30 years. However, you must hold them for at least one year, and if you redeem them before five years, you forfeit the last three months of interest.

Series EE Savings Bonds are sold at face value and are guaranteed to double in value after 20 years. Like I Bonds, they have a $25 minimum and must be held for at least one year.

For small investors just starting out, T-Bills, I Bonds, and EE Bonds are often the most accessible options due to their low minimums and simplicity.

Step 2: Opening a TreasuryDirect Account

To purchase Treasury securities directly from the US government, you must open an account at TreasuryDirect.gov. This is a free, secure online platform that eliminates the need for a broker or middleman.

Start by visiting the official TreasuryDirect website at www.treasurydirect.gov. Click on the “Open an Account” button and select “Individual” as your account type. You will need to provide personal information including your Social Security Number, a valid US address, an email address, a checking or savings account for transactions, and a password and security questions for account access.

The registration process typically takes 10 to 15 minutes. You must be a US citizen, US resident, or civilian employee of the United States to open an account. Once submitted, your account is usually approved immediately, and you can start purchasing securities right away.

TreasuryDirect uses 128-bit encryption to protect your information and offers two-factor authentication for added security. Your account is linked directly to your bank account, which means funds for purchases are debited electronically, and proceeds from maturing securities or interest payments are deposited directly into your bank account.

One important note: TreasuryDirect does not have a mobile app as of May 2026. You must access your account through a web browser on a computer or mobile device.

Step 3: Choosing the Right Treasury Securities for Small Investments

When you are working with limited capital, choosing the right security matters. Here is how to match your choice to your financial goals and time horizon.

If you need access to your money within a year, consider 4-week or 13-week T-Bills. These provide liquidity and safety while earning more than most savings accounts. As of May 2026, short-term T-Bills typically offer competitive rates that adjust with Federal Reserve policy.

For an emergency fund that you want to keep separate from your checking account, I Bonds are excellent. They protect against inflation, earn interest for 30 years, and can be redeemed after one year. The trade-off is the three-month interest penalty if you cash out before five years.

If you want regular income and can commit for 2 to 10 years, T-Notes provide predictable semiannual interest payments. A $500 investment in a 5-year T-Note paying 4 percent annual interest would generate $20 every six months, plus your $500 back at maturity.

For retirement savings or long-term wealth building, consider TIPS to protect against inflation or T-Bonds to lock in rates for 20 to 30 years. Even small, regular purchases can compound significantly over decades.

Many small investors use a laddering strategy, where they buy securities with staggered maturity dates. For example, you might invest $100 in a 4-week T-Bill, another $100 in a 13-week T-Bill, and $100 in a 26-week T-Bill. As each matures, you reinvest the proceeds into a new security, creating a steady cycle of liquidity and returns.

Step 4: Making Your First Purchase

Once your TreasuryDirect account is open and your bank account is linked, you are ready to make your first purchase. The process is straightforward and can be completed in minutes.

Log into your TreasuryDirect account and navigate to the “BuyDirect” tab at the top of the page. Select the type of security you want to purchase from the dropdown menu (T-Bill, T-Note, T-Bond, TIPS, I Bond, or EE Bond).

For marketable securities (T-Bills, T-Notes, T-Bonds, and TIPS), you will participate in an auction. Choose between a “noncompetitive bid” (recommended for small investors) or a “competitive bid.” A noncompetitive bid means you agree to accept the yield determined at auction, which guarantees you will receive the securities you request. This is the simplest option for beginners.

Enter the amount you want to invest, which must be at least $100 for most securities and $25 for savings bonds. Select whether you want securities held in your TreasuryDirect account (most common) or transferred to a bank or broker after purchase.

Review your order carefully, including the purchase amount, security type, and the date your bank account will be debited. Confirm the purchase by entering your account password.

For savings bonds (I Bonds and EE Bonds), the process is even simpler since they are not auctioned. You simply select the bond type, enter the amount (as low as $25), and confirm your purchase. The bonds are issued immediately at face value.

Your purchase confirmation will appear on the screen, and you will receive an email confirmation as well. The funds will be debited from your linked bank account on the issue date of the security.

Step 5: Managing and Monitoring Your Investments

After purchasing Treasury securities, managing your account requires minimal effort, but you should still monitor your holdings regularly.

Log into your TreasuryDirect account periodically to view your current holdings, check maturity dates and interest payment schedules, review upcoming auctions if you want to make additional purchases, and update your bank account or contact information if needed.

For securities that pay interest (T-Notes, T-Bonds, and TIPS), interest is deposited directly into your linked bank account every six months. You will receive an email notification when payments are made. You can choose to spend this interest or reinvest it by purchasing additional securities.

When a security matures, the principal is automatically deposited into your bank account unless you have set up automatic reinvestment. If you want to reinvest, you can set up a “reinvestment” instruction in your account settings, which automatically purchases a new security of the same type when the current one matures.

For savings bonds, interest accrues monthly and compounds semiannually. You can check the current value of your bonds using the Savings Bond Calculator available on TreasuryDirect. Remember that bonds must be held for at least 12 months before redemption.

TreasuryDirect sends you a Form 1099-INT each January reporting the interest income you earned the previous year. Treasury interest is exempt from state and local taxes but is subject to federal income tax. Keep these forms for tax filing purposes.

Practical Tips for Small Investors

Start with savings bonds if you are investing less than $200 total. The $25 minimum for I Bonds and EE Bonds makes them the most accessible entry point, and you can gradually build your holdings over time.

Set up automatic purchases if your budget allows. TreasuryDirect does not currently offer automatic recurring purchases for all securities, but you can set calendar reminders to manually purchase securities monthly or quarterly, creating a dollar-cost averaging strategy.

Reinvest your returns to accelerate growth. When T-Bills mature or you receive interest payments, immediately reinvest that money into new securities. This compounding effect significantly increases your returns over time.

Diversify across different types of Treasuries as your capital grows. Do not put all your money into a single security type. Mix short-term T-Bills for liquidity with longer-term T-Notes for higher yields and I Bonds for inflation protection.

Understand the tax implications. While Treasury interest is exempt from state and local taxes, it is federally taxable. If you are in a low tax bracket, Treasuries can be especially attractive compared to taxable alternatives like corporate bonds.

Keep your account credentials secure. TreasuryDirect accounts hold real money and securities. Use a strong, unique password and never share your login information. Enable all available security features.

Common Mistakes to Avoid

One of the most frequent mistakes beginners make is buying long-term securities when they might need the money sooner. While you can sell T-Notes, T-Bonds, and TIPS on the secondary market through TreasuryDirect’s “Sell Direct” feature, you may receive less than you paid if interest rates have risen since your purchase. Only invest in longer-term securities with money you will not need for the full term.

Another common error is forgetting about the early redemption penalty for savings bonds. If you redeem I Bonds or EE Bonds before five years, you lose the last three months of interest. Plan your bond purchases with this in mind and consider them medium-term investments.

Many small investors also make noncompetitive bids for amounts below $100, which is not allowed. The minimum purchase for most marketable securities is $100, and additional purchases must be in $100 increments. Double-check your purchase amount before submitting.

Some people avoid Treasury securities because they think the returns are too low compared to stocks. However, Treasuries serve a different purpose: capital preservation and risk reduction. They should be part of a balanced portfolio, not your only investment. As you build wealth, diversify into other asset classes while maintaining a Treasury foundation.

Finally, beginners sometimes open accounts at TreasuryDirect and then do nothing. The best results come from consistent, regular investing. Even if you can only invest $100 every few months, that discipline builds wealth over time.

Frequently Asked Questions

Can I really start investing with just $100? Yes, most marketable Treasury securities have a $100 minimum purchase requirement. Savings bonds have an even lower minimum of just $25, making them accessible to nearly anyone.

Is my money safe in Treasury securities? Treasury securities are backed by the full faith and credit of the US government and are considered one of the safest investments in the world. The US has never defaulted on its debt obligations.

How do I get my money back when a security matures? When marketable securities mature, the principal is automatically deposited into your linked bank account unless you have set up automatic reinvestment. For savings bonds, you must manually redeem them through your TreasuryDirect account.

Can I lose money investing in Treasury securities? If you hold securities until maturity, you will receive your full principal back plus any interest owed. However, if you sell marketable securities before maturity on the secondary market, you could receive less than you paid if interest rates have risen.

How often can I buy Treasury securities? There are no limits on how frequently you can purchase Treasury securities. You can participate in every auction for T-Bills, T-Notes, T-Bonds, and TIPS, and you can buy savings bonds at any time. The only limit is the annual purchase cap of $10,000 per calendar year for electronic I Bonds and $10,000 for EE Bonds.

Do I need to pay fees or commissions? No. There are no fees to open or maintain a TreasuryDirect account, and there are no commissions on purchases or sales. This is one of the major advantages of buying directly from the Treasury rather than through a broker.

What happens to my Treasury securities if TreasuryDirect shuts down? Your securities are registered in your name with the US Treasury. Even if the TreasuryDirect platform were to change, your ownership is permanently recorded. The Treasury Department would provide an alternative way to access and manage your holdings.

Conclusion

Investing in US Treasury securities through TreasuryDirect is one of the most accessible, safe, and straightforward ways to start building wealth, even with limited capital. With minimums as low as $25 for savings bonds and $100 for marketable securities, there are few barriers to entry. The process of opening an account takes less than 15 minutes, and making your first purchase is simple and secure.

Treasury securities provide peace of mind that few other investments can match. They are backed by the United States government, exempt from state and local taxes, and offer predictable returns. Whether you are saving for a short-term goal, building an emergency fund, or planning for retirement, there is a Treasury security that fits your needs.

The most important step is to start. Open your TreasuryDirect account today, make your first small investment, and commit to adding to it regularly. Over time, even modest contributions can grow into a substantial, secure financial foundation. Visit TreasuryDirect.gov now to begin your journey toward smarter, safer investing.

Disclaimer: This article provides educational information only and should not be considered personalized investment advice. Treasury securities are subject to federal income tax, and their performance can vary based on interest rate changes and inflation. Consult with a qualified financial advisor to determine the best investment strategy for your individual circumstances. As of May 2026, verify current rates, terms, and purchase limits before making investment decisions.