The investing information provided on this page is for educational purposes only. NerdWallet does not offer advisory or brokerage services, nor does it recommend or advise investors to buy or sell particular stocks, securities or other investments.
Your savings account balances and investments can grow more quickly over time through the magic of compounding. Use the compound interest calculator above to see how big a difference it could make for you.
Using this compound interest calculator
Try your calculations both with and without a monthly contribution — say, $50 to $200, depending on what you can afford.
To see the interest you can expect, compare rates on NerdWallet.
SavingsCash ManagementCDCheckingMoney Market
SoFi Checking and Savings
APY
3.50%SoFi members with direct deposit can earn up to 3.50% annual percentage yield (APY) on savings balances (including Vaults) and 2.50% APY on checking balances. There is no minimum direct deposit amount required to qualify for the 3.50% APY for savings and 2.50% APY for checking balances. Members without direct deposit will earn 1.20% APY on all account balances in checking and savings (including Vaults). Interest rates are variable and subject to change at any time. These rates are current as of 12/16/2022. Additional information can be found at //www.sofi.com/legal/banking-rate-sheet
Marcus by Goldman Sachs Online Savings Account
APY
3.00%3.00% APY (annual percentage yield) with $0 minimum balance to earn stated APY. Accounts must have a positive balance to remain open. APY valid as of 11/08/2022.
Discover Bank Online Savings
APY
3.00%Advertised Online Savings Account APY is accurate as of 11/10/2022
These cash accounts combine services and features similar to checking, savings and/or investment accounts in one product. Cash management accounts are typically offered by non-bank financial institutions.
These cash accounts combine services and features similar to checking, savings and/or investment accounts in one product. Cash management accounts are typically offered by non-bank financial institutions.
Wealthfront Cash Account
Betterment Cash Reserve – Paid non-client promotion
APY
3.20%Annual percentage yield (variable) is as of 11/07/2022.
CDs (certificates of deposit) are a type of savings account with a fixed rate and term, and usually have higher interest rates than regular savings accounts.
CDs (certificates of deposit) are a type of savings account with a fixed rate and term, and usually have higher interest rates than regular savings accounts.
CIT Bank CD
Marcus by Goldman Sachs High-Yield CD
APY
4.15%4.15% APY (annual percentage yield) as of 12/06/2022
Checking accounts are used for day-to-day cash deposits and withdrawals.
Checking accounts are used for day-to-day cash deposits and withdrawals.
SoFi Checking and Savings
APY
2.50%SoFi members with direct deposit can earn up to 3.25% annual percentage yield (APY) on savings balances (including Vaults) and 2.50% APY on checking balances. There is no minimum direct deposit amount required to qualify for the 3.25% APY for savings and 2.50% APY for checking balances. Members without direct deposit will earn 1.20% APY on all account balances in checking and savings (including Vaults). Interest rates are variable and subject to change at any time. These rates are current as of 11/30/2022. Additional information can be found at //www.sofi.com/legal/banking-rate-sheet
Upgrade Rewards Checking
Deposits are FDIC Insured
Current Account
Deposits are FDIC Insured
Chime Checking Account
Axos Bank® Rewards Checking
APY
1.25%Receive monthly direct deposits totaling $1,500 or more to earn 0.40% APY. Use your Axos Visa® Debit Card for a total of 10 transactions per month (min $3 per transaction) or sign up for Account Aggregation/Personal Finance Manager (PFM) in Online Banking to earn 0.30% APY. Maintain an average daily balance of $2,500 per month in an Axos Managed Portfolios Invest Account to earn 0.20% APY. Maintain an average daily balance of $2,500 per month in an Axos Self Directed Trading Invest Account to earn 0.20% APY. Use your Rewards Checking account to make your full monthly Axos consumer loan payment to earn 0.15% APY.
Money market accounts pay rates similar to savings accounts and have some checking features.
Money market accounts pay rates similar to savings accounts and have some checking features.
UFB Best Money Market
Discover Bank Money Market Account
Here’s a deeper look at how compounding works:
What is compound interest?
For savers, the definition of compound interest is basic: It’s the interest you earn on both your original money and on the interest you keep accumulating. Compound interest allows your savings to grow faster over time.
In an account that pays compound interest, such as a standard savings account, the return gets added to the original principal at the end of every compounding period, typically daily or monthly. Each time interest is calculated and added to the account, the larger balance earns more interest, resulting in higher yields.
For example, if you put $10,000 into a savings account with a 2% annual yield, compounded daily, you’d earn $203 in interest the first year, another $206 the second year and so on. After 10 years of compounding, you would have earned a total of $2,214 in interest.
But remember, that’s just an example. For longer-term savings, there are better places than savings accounts to store your money, including Roth or traditional IRAs and CDs.
Compounding investment returns
When you invest in the stock market, you don’t earn a set interest rate but rather a return based on the change in the value of your investment. When the value of your investment goes up, you earn a return.
If you leave your money and the returns you earn invested in the market, those returns are compounded over time in the same way that interest is compounded.
If you invested $10,000 in a mutual fund and the fund earned a 7% return for the year, you’d gain about $700, and your investment would be worth $10,700. If you got an average 7% return the following year, your investment would then be worth about $11,500.
Over the years, your investment can really grow: If you kept that money in a retirement account over 30 years and earned that average 7% return, for example, your $10,000 would grow to more than $76,000.
In reality, investment returns will vary year to year and even day to day. In the short term, riskier investments such as stocks or stock mutual funds may actually lose value. But over a long time horizon, history shows that a diversified growth portfolio can return an average of 6% to 7% annually. Investment returns are typically shown at an annual rate of return.
The average stock market return is historically 10% annually, though that rate is reduced by inflation. Investors can currently expect inflation to reduce purchasing power by 2% to 3% a year.
Compounding can help fulfill your long-term savings and investment goals, especially if you have time to let it work its magic over years or decades. You can earn far more than what you started with.
More NerdWallet calculators
Compounding with additional contributions
As impressive as compound interest might be, progress on savings goals also depends on making steady contributions.
Let’s go back to the savings account example above. We started with $10,000 and ended up with about $2,214 in interest after 10 years in an account with a 2% annual yield. But by depositing an additional $100 each month into your savings account, you’d end up with about $25,509 after 10 years, when compounded daily. The interest would be about $3,509 on total deposits of $22,000.