Investing means buying something with the expectation it will grow in value or produce income

When you invest, you are putting money into something — a stock, a bond, real estate, a mutual fund — with the goal of having more money later. The money you put in is called your principal. Over time, that investment may increase in value, pay you income (like dividends or interest), or both. You then sell it or collect the payments, ideally for more than you started with.

The catch is that investments can also lose value. If you buy a stock for $100 and it drops to $80, you have lost $20 unless you hold it and wait for it to recover. This is why investing is different from saving — a savings account at a bank is insured and does not go down in value, but it also grows very slowly. Investments grow faster on average, but you take on the risk that they might shrink.

How you invest depends on what you are trying to do, how much money you have, and how much risk you are comfortable taking. A teenager saving for college might invest differently than someone saving for retirement in 30 years.

Key Takeaways

  • You invest by opening an account with a brokerage or bank, depositing money, and using that account to buy stocks, bonds, mutual funds, or other investments.
  • Most people start by opening a brokerage account (for regular investing) or a retirement account like a 401(k) or IRA (which have tax advantages).
  • You can invest a lump sum all at once or contribute small amounts regularly, and many people do both at different times in their lives.
  • Your investment choices should match your time horizon — how long until you need the money — and your comfort with the possibility of losing some of it.

Opening an account is the first step

Before you can invest, you need a place to hold your investments. This is called a brokerage account. A brokerage is a company licensed to buy and sell investments on your behalf. You open an account with them the same way you open a bank account — you provide your name, address, Social Security number, and initial deposit.

Common brokerages include Fidelity, Charles Schwab, E*TRADE, and Vanguard, but there are many others. Some are owned by banks; some are independent. The main differences between them are the fees they charge, the investments they offer, and how easy their websites or apps are to use. Most brokerages let you open an account online in 10 to 15 minutes.

When you open the account, you will choose what type it is. A taxable brokerage account is the simplest — you can invest any amount, withdraw money whenever you want, and there are no rules about what you can buy. The downside is you pay taxes on any gains or income your investments produce. A retirement account like a 401(k) or IRA has limits on how much you can contribute each year and rules about when you can withdraw, but the money grows without being taxed until you retire. Most people use both types at different times.

You buy investments through your brokerage account

Once your account is open and funded, you use it to buy investments. You log into your account online or through an app, search for what you want to buy (a stock ticker symbol, a mutual fund name, a bond), and place an order. The brokerage executes the trade — meaning it buys the investment for you — and the investment appears in your account.

For stocks, you can buy individual shares of a company. If Apple stock costs $150 per share and you have $1,500, you could buy 10 shares. For bonds, you are lending money to a company or government and they pay you interest. For mutual funds or exchange-traded funds (ETFs), you are buying a bundle of many stocks or bonds at once, which spreads your risk across many companies instead of betting on one.

Most brokerages now charge zero commission — meaning they do not charge you a fee to buy or sell. Some charge a small fee per trade, and some charge annual account fees if your balance is below a certain amount. Check the fee schedule before you open an account so you know what to expect.

You can invest a large amount at once or small amounts over time

There is no single right way to get money into investments. Some people have a lump sum — an inheritance, a bonus, a savings goal they have reached — and invest it all at once. Others contribute regularly, like $200 per month from their paycheck, building their investments slowly over years.

Regular contributions have an advantage: if you invest the same amount every month regardless of whether the market is up or down, you naturally buy more shares when prices are low and fewer when prices are high. This is called dollar-cost averaging, and it reduces the risk of putting all your money in right before a market drop. But if you have the money available and a long time horizon, investing a lump sum early usually produces better results because your money has more time to grow.

Many people do both — they invest a lump sum when they have one, and they also set up automatic monthly contributions from their paycheck. Your brokerage can set this up for you so the money moves automatically without you having to remember.

Your time horizon and risk tolerance shape your choices

Before you decide what to buy, think about when you will need the money. If you are saving for something five years away, you might choose investments that are less likely to drop sharply in the short term. If you are saving for retirement 30 years away, you can afford to take more risk because you have time to recover from downturns.

Your risk tolerance is how comfortable you are with the possibility of losing money. Some people sleep well at night even if their investments drop 20% in a bad year. Others panic and sell everything, locking in losses. Neither is wrong — it is about what you can handle emotionally and financially. If you need the money soon or cannot afford to lose it, choose safer investments. If you have time and can absorb losses, you can take on more risk for the possibility of higher returns.

A common starting point is a target-date fund or balanced fund. These are mutual funds or ETFs that automatically mix stocks and bonds in a way that matches your time horizon or comfort level. You pick one, invest in it, and it does the balancing for you. This is simpler than picking individual stocks and bonds yourself.

Retirement accounts have tax advantages but rules

If you are investing for retirement, a retirement account is usually better than a regular brokerage account because the money grows without being taxed until you withdraw it. The two most common types are a 401(k) (offered by employers) and an IRA (which you open yourself).

With a 401(k), your employer sets it up, and you contribute money directly from your paycheck. Many employers match a portion of what you contribute — meaning they add assistance programs to your account. An IRA is an account you open at a brokerage, and you contribute money yourself. For 2024, you can contribute up to $7,000 per year to an IRA (or $8,000 if you are 50 or older), and the limit is higher for 401(k)s.

The tradeoff is that you cannot withdraw the money before age 59½ without paying a penalty, with some exceptions. This is why retirement accounts are best for money you truly will not need for decades. If you might need the money sooner, use a regular brokerage account.

You monitor and adjust your investments over time

Once you have invested, you do not have to do anything. Your investments will grow or shrink based on market conditions. But it is a good idea to check on them periodically — maybe once or twice a year — to make sure they still match your goals and time horizon.

If you are getting closer to needing the money, you might shift from riskier investments (like stocks) to safer ones (like bonds). If your life circumstances change — you get a raise, you inherit money, you decide to retire earlier — you might adjust how much you are investing or what you are investing in. This is called rebalancing, and most brokerages make it easy to do online.

Avoid the temptation to buy and sell constantly based on news or market swings. Most people who trade frequently end up with worse results than those who invest and hold. The longer you stay invested, the more time your money has to grow.

Frequently Asked Questions

How much money do I need to start investing?

Most brokerages let you open an account with as little as $1 to $100. Some have no minimum at all. You can start with whatever you have and add more later. The important thing is to start, not to wait until you have a large sum.

What is the difference between stocks and bonds?

A stock is ownership in a company — you own a small piece of it and benefit if it grows. A bond is a loan you make to a company or government — they pay you interest and return your money at a set date. Stocks have higher growth potential but more risk; bonds are more stable but grow slower.

Can I lose all my money investing?

You can lose some of your money if your investments drop in value. You can lose all of it only if the companies or governments you invested in fail completely, which is rare for large, established companies. Spreading your money across many investments (diversifying) reduces this risk.

Should I invest if I have debt?

It depends on the interest rate of your debt. If you have high-interest credit card debt, paying that off usually makes more sense than investing, because the interest you pay is higher than what you would earn investing. For lower-interest debt like student loans or a mortgage, you can do both.

How do I know if I am investing too much risk?

If you check your account balance and feel anxious or panicked, your investments are probably too risky for you. Consider shifting some money into bonds or target-date funds that are more stable. Investing should not keep you up at night.