Savings account vs. investing: Why you need both
Savings accounts and investing both grow your money, but in different ways. See how they compare, and how to manage both from a single app.
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This content is for general educational purposes and is not intended as financial, legal, investment, or tax advice and should not be relied on as such. We do not guarantee the accuracy or completeness of the information found in this post.
Summary
A savings account keeps your money liquid and protected, while investing gives your money more growth potential over the long term.
Savings balances at an FDIC insured bank are protected up to $250,000, but stocks, ETFs, and mutual funds carry market risk and aren't insured.
Compound interest and compounding returns both work in your favor, whether you're earning interest in a high-yield savings account or staying invested in the stock market.
Your time horizon and risk tolerance decide the mix: short-term goals call for savings, and long-term goals leave more room for investing.
OnePay lets you manage a savings account and an investment account from the same app, so you don't have to choose only one.
Save or invest? It's one of the most common questions in personal finance, and the honest answer is usually both. A savings account and an investment account serve different jobs in your financial plan, and neither one can fully replace the other.
This guide breaks down the saving vs. investing question, how a savings account and investing actually compare, why relying on only one can leave gaps in your financial strategy, and how to decide what belongs in each based on your own financial goals.
What is a savings account?
A savings account is a deposit account designed to hold money you don't need for everyday spending but still want to be able to access. Unlike a checking account, which is built for frequent transactions, a savings account is meant for money you're setting aside, whether that's an emergency fund or savings toward a specific goal.
Savings accounts are liquid, meaning you can withdraw the money without waiting out a lock-up period, and balances at a bank or credit union are typically FDIC insured or NCUA insured up to $250,000 per depositor. In exchange for that safety and easy access, savings accounts usually earn interest at a lower interest rate than what investing can potentially offer over time.
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What is investing?
Investing means putting your money into assets like stocks, bonds, mutual funds, or exchange-traded funds, with the goal of growing it over time. It can also mean investing in cryptocurrency.
Typically, when you buy a stock, you're buying a small ownership stake in a company, and its value can rise or fall with the stock market. Bonds work differently, functioning more like a loan you make to a government or company in exchange for regular interest payments.
Unlike a savings account, investing doesn't come with a guaranteed rate of return, and the money you invest in securities and mutual funds isn't federally insured the way a savings account is. That means investing carries real market risk. You could see strong potential returns over time, but you could also lose some or all of your original investment, especially in the short term.
Why savings alone can lose purchasing power
Keeping all your money in savings feels safe, but it comes with a quieter risk: inflation. If the interest rate on your savings account doesn't keep pace with inflation, the purchasing power of that money shrinks over time, even while the account balance keeps climbing.
At the end of the day, a dollar that buys a loaf of bread today might only buy half a loaf years from now once you account for rising prices. That's a major reason people look to investing for long-term growth, even after they've built up solid savings.
Why investing can't replace savings either
Investing solves the purchasing-power problem, but it introduces a different one: market fluctuations. The stock market moves up and down regularly, and a stock or fund that's up significantly one year can drop the next. If you needed to sell during a downturn to cover an emergency, you could end up locking in a loss instead of riding out the market's ups and downs.
This is why financial guidance generally recommends paying off high-interest debt and building savings before putting a large portion of your money into anything with market risk.
Savings accounts and lower-risk options like certificates of deposit exist precisely because sometimes lower risk matters more than growth potential, especially for money you might need on short notice.
How compounding works in your favor either way
Compound interest is interest calculated not only on your original balance, but also on the interest you've already earned. The longer your money stays in an account that pays a return, the more chances it has to compound. This applies to a high-yield savings account earning interest and to an investment account earning dividends or price gains that are reinvested.
Compounding is also why starting early matters so much. Setting up automatic transfers into savings and investment accounts, even in small, regular amounts in savings, gives compounding more time to work, since consistent contributions add more principal for future growth to build on. It's one of the simplest ways to grow your money without having to think about it every month.
Matching your money to your goals
The right mix between saving and investing usually comes down to time horizon and risk tolerance. Short-term goals, like a vacation next year or a car down payment, are generally better suited to savings, since you don't want to risk needing that money right when the market happens to be down. Long-term goals, like retirement decades away, generally leave more room for investing, since there's more time to recover from any market dip along the way.
A solid financial plan usually isn't a choice between saving versus investing. It's a financial strategy that puts each dollar where it's best suited: near-term living expenses and an emergency fund in savings, and money you won't need for years working toward long-term growth through investing.
Start with an emergency fund
Before investing becomes a priority, most financial guidance points to building an emergency fund first, often enough to cover a few months of living expenses. Keeping that money in a high-yield savings account. These accounts often offer some of the better interest rates available for money you still want to be able to reach quickly.
Investing for retirement
Retirement is one of the clearest cases for investing rather than saving, simply because your money has the potential to grow over time. Retirement accounts like a Roth IRA let you contribute money you’ve already paid taxes on, so your earnings can grow tax-free and you don’t owe taxes on qualified withdrawals in retirement, which can make a meaningful difference after decades of compounding.
Building wealth for retirement is a long-term investment by nature, since most people are investing money they won't touch for years or even decades. Withdrawals are generally considered qualified if you’re at least 59½ and the account has been open for at least five years. Withdrawals that don’t meet these conditions may be subject to taxes and/or penalties.
Save and invest with OnePay
You don’t have to juggle separate apps. When you bank through OnePay your savings balance earns interest, and, separately, OnePay Invest gives you the ability to start investing with as little as $1 in the stocks and ETFs you care about.¹ OnePay also offers crypto, which is held in a separate account. All three are available in the OnePay app. Keep in mind that investments, including crypto, are not FDIC insured, not bank guaranteed, not a deposit, and may lose some or all of their value.
Banking, Invest and Crypto are separate products offered by separate entities. Your banking account is provided by our partner banks, and OnePay Invest is a separate account offered by our brokerage, One Growth Securities, while Crypto is powered by Zero Hash LLC and Zero Hash Liquidity Services LLC. But because you can access all three in the OnePay app, moving money between your banking and investing or crypto account, or setting up automatic transfers into each, takes a few taps instead of logging into separate apps somewhere else.
Frequently Asked Questions
Most people should do both. Keep an emergency fund and money for short-term goals in savings, where it's protected and easy to access, and invest money you won't need for several years or more, where it has time to grow and recover from any market dip.
For long-term goals, investing generally offers more growth potential than savings, since it isn't limited to a fixed interest rate. The tradeoff is that investing carries market risk, so it's best suited to money you have a long time horizon to work with.
A common guideline is to keep enough in savings to cover a few months of living expenses before directing extra money toward investing. That way, an unexpected expense doesn't force you to sell investments at a bad time.
Savings accounts at banks are typically FDIC insured up to $250,000 per depositor, and accounts at credit unions carry similar protection through the NCUA. Investments like stocks, bonds, and mutual funds don't carry this same insurance, since their value can rise or fall with the market.
Compound interest usually refers to interest earned on a savings account or certificate of deposit, calculated on both your original balance and interest you've already earned. Compounding in investing works similarly, except the growth comes from reinvested dividends and price gains instead of a fixed interest rate.
Rates of return vary by year and by what you're invested in, and there's no guaranteed rate the way there is with a savings account. Historically, the stock market has trended upward over long periods, but any given year can bring a loss instead of a gain, which is why time horizon matters so much. Past performance does not guarantee future results.
Many financial guides suggest paying off high-interest debt, like credit card balances, before investing, since the interest rate on that debt often outweighs typical investment returns. Paying down high-interest debt first can offer a more certain financial payoff than investing while carrying that balance.
A Roth IRA is a retirement investment account, not a savings account, even though the name can be confusing. Money inside a Roth IRA is typically invested in stocks, bonds, or funds, and it grows tax-free, but it's still subject to market risk like other investment accounts.
Options like bonds, money market funds, and diversified funds tend to carry lower risk than individual stocks, though no investment is completely free of market risk. Starting with smaller amounts and a longer time horizon can also make short-term market fluctuations easier to ride out.
Yes. OnePay lets you hold a savings balance and an investment account in the same app, so you can grow your money in more than one way without managing separate logins or transferring money between outside accounts.