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Common Investing Mistakes to Avoid

Common Investing Mistakes to Avoid

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Common Investing Mistakes to Avoid

A 2025 survey from the Federal Reserve Bank of Philadelphia found that 57% of people don’t personally own stocks. The most common reasons? Lack of funds and a lack of knowledge.

Investing can be a powerful way to grow your money over time, but we get it: getting started can feel completely intimidating, and it’s not the priority when you’re living paycheck to paycheck.

The good news is that many investing apps now let you get started with as little as $1. Heck, you can even start investing with your spare change! And when it comes to building your confidence, you don’t need to be an expert—you just need to avoid common investing mistakes that can quietly hurt your returns.

This guide will walk you through the most common investing mistakes people make and show you how to avoid them so you can feel more confident putting your money to work.

💰 Looking for the best apps to start investing

Sign up for KashKick, then navigate to “Deals” and filter by “Investing.” There, you’ll find plenty of options—plus opportunities to earn rewards! Deals are always changing, but right now, for example, you can invest in shares of real estate with Ark7. Sign up and invest $100 for a $40 KashKick reward!

14 Common Investing Mistakes (That Are Totally Avoidable!)

Below are some of the most common investing mistakes beginners (and even experienced investors) make. The best part is that every one of them is totally avoidable with a little planning and the right mindset.

1. Not Doing Enough Research

The first mistake new investors make is not doing enough research about investing. They’re confused with all the terms and lingo and don’t know where to start. This can lead to avoidable mistakes and money lost from poor decisions. 

A great place to start is KashKick’s Beginner’s Guide to Investing. In this article, you’ll learn all the investing terms you need to know, along with what types of investments you can make and how to get started!

2. Not Having a Clear Investment Plan

One of the most common investing mistakes is jumping in without a plan. Investing without knowing your risk tolerance, time horizon, or investment goals can lead to panic selling or reckless buying.

Before you invest, ask yourself:

  • What am I investing for? Retirement, travel, a home, extra income?
  • How long can my money stay invested?
  • How much risk am I comfortable with?

Having a simple plan keeps your decisions consistent and helps you avoid emotional reactions when markets fluctuate.

3. Investing Without Specific Goals

Closely related to planning is goal-setting. Without clear goals, it’s easy to chase trends instead of progress.

For example, short-term goals should not be invested the same way as long-term retirement funds. One of the biggest investing mistakes is putting money you need soon into volatile assets that could drop in value when you need them most.

Clear goals help you make smarter investment decisions and stay patient.

4. Putting All Your Eggs in One Basket

Another mistake to avoid? Making all the same types of investments. 

You want to diversify your investments as much as possible. This simply means having different types of investments—such as real estate, stocks, bonds and more. The more diversified your investments are, the less risk is involved.

“Because assets perform differently in different economic times, diversification smoothens your returns,” Bankrate reports. “While stocks are falling, bonds may be rising, and CDs remain stable.”

5. Setting Unrealistic Expectations

With investing, you can’t expect fast, guaranteed returns. Social media and headlines can make investing look like a shortcut to instant wealth, but real investing is usually slow, steady and long-term.

When investors expect big wins quickly, they’re more likely to take unnecessary risks, jump in and out of investments, or panic when the market dips. Instead of chasing huge gains, focus on consistent, long-term growth. 

Realistic expectations help you stay patient, avoid emotional decisions and build wealth in a healthier way.

6. Chasing Past Performance

Something else that will hurt your investments is trying to duplicate results. Relying on past results to be today’s investment winnings is like expecting lightning to strike in the same place twice—thrilling, but highly unlikely. 

Investment markets are fluid and always changing, so don’t chase the past. Keep up with market trends and keep your investments fresh.

7. Making Emotional Decisions

In the investing world, you don’t want your heart running your decisions—we’ll leave that to your brain. Emotional decisions have no place in investing—your decisions need to be logical and calculated to achieve the best possible results. 

Emotional decisions in investing often lead to buying high and selling low, hurting your overall investments and costing you money.

8. Timing the Market

Timing the market means predicting when it will hit highs and lows—but doing so consistently is nearly impossible.

9. Constantly Buying and Selling

Another common investing mistake is trading too often. Although it may feel productive, frequent buying and selling can:

  • Increase fees
  • Trigger taxes
  • Reduce long-term returns

Successful investors usually focus on long-term growth instead of reacting to every market move (see: mistake No. 8). Sometimes, the smartest move is simply letting your investments work over time.

10. Not Rebalancing Your Portfolio

Similarly, failing to rebalance your portfolio is one of the most overlooked investing mistakes.

Over time, your best-performing investments can grow to take up a larger share of your portfolio than you originally intended, potentially exposing you to more risk than you’re comfortable with.

Rebalancing helps maintain your desired risk level and keeps your investments aligned with your goals. Most investors review and rebalance once or twice per year.

11. Ignoring Fees

Did you know that fees are involved when using some investment products? We’re talking about brokerage fees, expense ratios and trading fees. Brokers typically charge a percentage of your annual return, so the higher your balance, the more you can lose to fees over time.

Make sure to watch your fees, and choose your brokers wisely if you want to get the highest possible return on your investments.

12. Forgetting About Taxes

Just like any other income, investments are taxable. You always need to take taxes into account when investing, because taxes can significantly affect your net returns. 

For example, brokerage accounts charge you a certain percentage of tax after making a withdrawal. If the money is left in the account for over a year, taxes are considerably less (0%, 15% or 20%, depending on your tax bracket). 

If the money is taken out within a year, the income falls within your normal income tax bracket, according to Investopedia.

You can even get tax-advantaged accounts, which are either tax-deferred or tax-exempt. These include accounts like traditional or Roth 401(k)s and IRAs, which allow you to withdraw money in retirement with fewer or no tax penalties. 

13. Ignoring Inflation

Inflation means your money buys less over time as prices rise. One common investing mistake is focusing solely on how much your investments grow, without considering how inflation affects their real value.

For example, if your money earns 3% in a year but inflation is 4%, you’re actually losing purchasing power. That’s why it’s important to invest in assets that have the potential to grow faster than inflation instead of letting your money sit in low-growth options for too long.

Keeping inflation in mind helps ensure your money grows. With 4% inflation, $1,000 today only buys about $960 worth of goods next year—so you need your investments to grow faster than that just to stay even.

14. Waiting Too Long to Start Investing

Many people delay investing because they think they need a lot of money to get started. In reality, one of the biggest investing mistakes is waiting.

Thanks to compound interest, even small contributions can grow significantly over time. The earlier you start, the more your money can work for you. Starting small is far better than not starting at all!

Keep Investing Smart

Avoiding common investing mistakes is just as important as choosing the right investments. When you stay educated, diversified, and patient, your money has a greater opportunity to grow over time.

If you’re looking to add more room in your budget to invest, KashKick rewards members for playing games, taking surveys and trying new apps. KashKick reviewers love the $10 cashout minimum, the quick payouts via PayPal and how easy it is to navigate. One member we spoke with made $500 on KashKick—plenty to start investing!

For more resources, you can also check out how to start investing on a low income and KashKick’s top investing apps (where you can earn rewards for signing up!).

FAQ: Common Investing Mistakes

What are the most common investing mistakes beginners make?

Some of the most common investing mistakes include not doing enough research, putting all your money into one investment, making emotional decisions, ignoring fees and trying to time the market. Beginners also often forget about taxes and inflation, which can reduce real returns over time.

How can I avoid common investing mistakes?

You can avoid common investing mistakes by:

  • Creating a clear investment plan
  • Diversifying your portfolio
  • Keeping an eye on fees and taxes
  • Setting realistic expectations
  • Staying consistent instead of chasing trends

Education and patience are two of the most powerful tools an investor can use.

What is the biggest investing mistake long-term investors make?

One of the biggest long-term investing mistakes is not starting early enough or abandoning a plan when the market turns against you. Staying invested and letting compound growth work over time is often more effective than reacting to short-term market changes.

Picture of Carson Brunson
Carson Brunson
Carson is a Content Strategist and Copywriter at KashKick, focused on smart, real-world ways people earn and save money. Her work has appeared in national outlets like The Penny Hoarder, bringing a clear, practical voice to personal finance.

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