Beginner’s Guide to Investing: Why You Should Invest
Investing is one of the most important steps you can take toward long-term financial security. For military members, the combination of a stable income, tax-advantaged accounts like the TSP and Roth IRA, and the power of compound interest creates a unique opportunity to build significant wealth - but only if you start early and stay consistent.
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This is part one in a series of articles for beginner investors. This article covers why investing is essential for long-term financial health. In part two, we will cover different types of investments, and in part three, we will discuss the importance of diversification.
Investing is a critical component of building long-term wealth, yet many people delay getting started. Common reasons include uncertainty about how to invest, concerns about risk, and a lack of understanding about the benefits.
For military members, investing plays an especially important role in building long-term financial stability. While military benefits such as base pay, housing allowances, and retirement systems provide a strong foundation, investing helps bridge the gap to meet long-term financial goals.
The Role of Investing in Financial Growth
Investing allows individuals to move beyond simply saving money and begin building wealth. While saving provides financial security and liquidity, it typically does not generate the level of growth needed to meet long-term financial goals.
Over time, investing enables money to growth through returns generated by assets such as stocks, bonds, and real estate. This growth is essential for addressing major financial needs, particularly those that extend decades into the future.
For military members, the Thrift Savings Plan (TSP) and Roth IRA are two of the most powerful and accessible investment vehicles available. The TSP functions similarly to a civilian 401(k) and offers some of the lowest expense ratios of any retirement account in the country. A Roth IRA allows military members to contribute after-tax dollars, including tax-free combat pay, and make tax-free withdrawals in retirement. Together, these two accounts form the foundation of a strong military investment strategy.
The Importance of Investing
Understanding why you should invest is the first step toward taking control of your financial future. Here are three key reasons why investing matters, especially for military members who have a unique opportunity to build wealth on top of an already strong financial foundation.
Take Advantage of Compound Interest
One of the most powerful forces in investing is compound interest. We’ve all seen the startling charts comparing the compound interest of an investor who started young versus an investor who waited. But it’s important to understand just how much compound interest can and will affect your investments.
Most CDs (certificates of deposit) or government bonds have historically grown at around 4-5% annually, though rates fluctuate with broader economic conditions. Historically, investing in the stock market will earn you a return of about 10% over the years. The difference between those two types of investments means the difference between a $300+ return on a $100 investment in 25 years and a $1,000+ return on the same investment in the same time frame.
No matter how cautious you may be about investing, it really does pay to do your homework and find a strategy that will make compount interest work for you. The earlier you start, the more time compound interest has to do the heavy lifting.
For military members, the combination of a tax-free combat zone deployment and consistent TSP contributions creates an especially powerful compounding engine. Every dollar invested early in your military career has decades to grow before you need it.
Retirement Is Now Your Responsibility
It used to be that working at the same job for 20 or 30 years guaranteed a pension that would let the golden years take care of themselves. This is still true for military members and workers in some government positions, but unfortunately, pensions in the private sector are few and far between.
If you are lucky enough to have a pension, it may or may not be enough for you to live on without another source of income. Even a military pension may not be enough for retirement. Read more about how much a military pension is worth. If you want to ensure that your retirement years are comfortable and financially secure, you’ll need to take charge of your investments and not rely solely on a pension or government benefit to carry you through.
Military members who serve under the Blended Retirement System (BRS) receive government matching contributions to their TSP, up to 4% of base pay, making it essential to contribute at least enough to capture the full match. This is essentially free money that directly accelerates your retirement savings.
Only You Can Know Your Goals
It would be wonderful if money dropped from the sky any time you might need it. But just like retirement, your life goals are your responsibility, whether you want to be able to pay for your child’s education, take a trip around the world, or buy that house on the lake you’ve always dreamed of. Without investing your money to be ready for these goals, they’ll never be more than dreams.
Putting your money to work in a way that feels comfortable and aligns with your risk tolerance gives you control over your financial future. Simply saving money without investing it will never generate the growth needed to make major life goals a reality.
Military members have a unique advantage here. The financial stability of a regular paycheck, housing allowance, and other benefits creates an ideal environment for consistent investing. Unlike many civilians who face irregular income or high living costs, military members can often invest a meaningful percentage of their income from the very beginning of their career.
Getting Started: What Military Members Should Do First
If you are new to investing or looking to strengthen your current strategy, here are the most important steps to take.
Start by contributing to your TSP. At minimum, contribute enough to capture the full BRS matching contribution if you are enrolled. From there, consider opening a Roth IRA and contributing up to the annual limit. For 2026, the Roth IRA contribution limit is $7,500, or $8,600 if you are age 50 or older.
If you are deployed to a combat zone, take advantage of the ability to contribute tax-free combat pay to your Roth IRA, a benefit unavailable to civilian investors. And if you have access to the Savings Deposit Program (SDP), its guaranteed 10% return makes it one of the best short-term investment opportunities available anywhere.
The most important step is simply to start. Even small, consistent contributions made early in your career will compound into significant wealth over time. The military gives you the tools to build a strong financial future. The rest is up to you.
Ready to take the next steps? Explore the different types of investments available to you in part two of this series.
