Author: Patrick I. Romero-Aldaz – Administrative Partner – People, Culture, & Brand
When it comes to building financial wellness, there is one factor that often matters more than income, investment knowledge, or even the amount of money someone saves.
That factor is time.
Time is what allows compound interest to work its magic, transforming small deposits into meaningful savings over the years. For teens and young adults, starting early with small, consistent deposits can make a world of difference later in life. For parents, grandparents, and caregivers, understanding the power of compound interest can help establish habits early and create opportunities for younger savers that may last a lifetime.
The good news? You don’t need thousands of dollars to get started. In fact, some of the most successful savers begin with small, consistent deposits and allow time to do the heavy lifting.
What Is Compound Interest?
Compound interest is often described as “earning interest on your interest.”
Unlike simple interest, which only pays interest on the original amount deposited, compound interest allows your money to grow on both your original balance and the interest it has already earned.
Think of it like planting a tree.
At first, growth may seem slow. But over time, the tree grows branches, those branches grow more branches, and eventually the growth begins to accelerate. Compound interest works much the same way. The longer money remains invested or saved, the more opportunities it has to grow.
This is why financial experts often say that starting early is more important than starting big.
Real-Life Examples of the Magic of Compound Interest
Let’s imagine a newborn receives a gift of $1,000 that is invested and earns an average annual return of 7%.
Without adding another penny, that money could grow to approximately:
- $1,970 by age 10
- $3,870 by age 20
- $7,610 by age 30
- $15,000 by age 40
- Nearly $30,000 by age 50
That means a single $1,000 gift at birth could become almost 30 times larger simply because it was given time to grow.
Now imagine that same person also receives birthday money, holiday gifts, and small monthly deposits into savings throughout their lives. The results can become even more impressive.
Why Starting Early Matters – A tale of two savers
Consider two young savers, Emma and Noah.
Emma’s parents begin saving $25 per month the month she is born and continue until she turns 18. Assuming an average annual return of 7%, Emma would have accumulated approximately $10,600 by her 18th birthday.
Noah’s parents wait until the time is ‘right’ – which never seems to come. At 18, Noah begins saving $50 per month—twice as much as Emma’s family saved each month.
Even though Noah is contributing more each month, Emma starts adulthood with a significant head start because her money had years longer to compound.
Now let’s fast-forward to age 65.
If neither Emma nor Noah contributed another dollar after age 18 and their savings continued growing at 7% annually:
- Emma’s $10,600 could grow to approximately $255,000.
- Noah would have $0 because he had not yet started saving.
This example highlights an important lesson: time can often be more valuable than the amount being saved.
Now, let’s take the above example a bit further. Imagine Emma takes over, contributing $25 monthly at age 18 and continues until age 65. Noah, on the other hand, didn’t start until age 18 but saved $50 per month until he is 65. Assuming both earn an average annual return of 7% compounded monthly, the results become even more dramatic.
At age 65 Emma’s total contributions (from birth to 65 at $25 monthly) would equal $19,500 and her account value at age 65 would be approximately $396,000.
For Noah, his total contributions (from 18 to 65 at $50 monthly) would equal $28,200 and his account value at age 65 would be approximately $219,000.
Emma contributed $8,700 less than Noah over her lifetime, yet she accumulated approximately $177,000 more by age 65. This translates to reaching age 65 with about 81% more money despite saving only half as much each month.
The Cost of Waiting – Starting as a young adult versus waiting a bit
The opposite is also true.
Imagine two young adults each want to start investing for their future.
Sarah begins investing $100 per month at age 15 when she starts a regular babysitting job and continues until age 25. After ten years, she stops contributing altogether.
Michael waits until age 25 to start investing. He contributes the same $100 per month every month until age 65.
Assuming a 7% average annual return:
- Sarah contributes about $12,000 total.
- Michael contributes about $48,000 total.
Yet by age 65, Sarah’s account value would be approximately $282,000 compared to Michaels’ at approximately $263,000 simply because her money had an additional decade to compound.
Although Sarah contributes only $12,000, and Michael contributes $48,000—four times as much—Sarah still starts retirement with approximately $19,000 more.
The difference comes entirely from those 10 extra years of compounding. Sarah’s investments have 50 years to grow from her first contribution, while Michael’s earliest investment has only 40 years
This example is one of the clearest demonstrations of the power of starting early. It reinforces an important lesson: The first dollars you invest, no matter how small, are often the most valuable dollars you’ll ever invest because they have the most time to compound.
Small Contributions Can Lead to Big Results
Many people assume saving requires large amounts of money, but consistency often matters more. As the example above demonstrates, even small contributions monthly can add up, and starting early, time, and consistency are the magic secret.
That’s the power of compound interest.
Why Youth Savings Accounts Matter
Opening a savings account for a young saver is much more than accumulating money.
A youth savings account creates opportunities to teach important life skills, including:
- Setting goals
- Delaying gratification
- Building healthy financial habits
- Understanding the difference between wants and needs
- Appreciating the value of consistency
When young savers can watch their savings grow over time, financial concepts become more tangible. Saving money is no longer an abstract idea—it’s something they can see and experience firsthand.
These lessons often carry into adulthood and help build a foundation for lifelong financial wellness. Have a youngster you’d like to help get started early? Come into MetrumCU and our wonderful Member Service Team would be happy to help open a youth account*, we’ll even contribute the $25 opening deposit, just mention this blog post.
It’s never too late to start
Don’t yet have an account and but interested in making time work for you, we welcome you to come into our branch or visit us online at metrumcu.org and open an account*. When our Member Service Team makes contact to welcome you to the MetrumCU family, ask about how to start unleashing the power of compounding interest and we will be happy to help you get started.
Building Financial Wellness Together
At Metrum Community Credit Union, we believe financial wellness starts with education, opportunity, and healthy financial habits.
Helping our members understand saving and compound interest today can create opportunities for tomorrow. Whether that means preparing for college, purchasing a first vehicle, building an emergency fund, or preparing for retirement, the lessons learned through saving can last a lifetime.
The most powerful thing about compound interest isn’t the math behind it—it’s the reminder that small actions today can create meaningful results in the future.
Don’t Let Time Slip Away
When it comes to saving, there is one thing that can never be replaced: time.
The amount doesn’t have to be large.
The strategy doesn’t have to be complicated.
The important thing is to begin.
A few dollars saved today can become hundreds. Hundreds can become thousands. And the habits developed along the way can help shape a lifetime of financial wellness.
That’s the power of compound interest—and it’s a gift that can benefit you for years to come.
Ready to help build a strong financial foundation? Metrum Community Credit Union is here to help, let us know how we can help and we’ll always have your back!
*Your savings are federally insured to at least $250,000 and back by the full faith and credit of the Unites States Government.