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How Much Interest Can I Earn on $100, $1K or $10K?
Ruth Sarreal is an editor and content strategist covering consumer banking topics at NerdWallet. She has over a decade of experience writing and editing for consumer websites. She previously edited content on personal finance topics at GOBankingRates. Her work has been featured by Nasdaq, MSN, TheStreet and Yahoo Finance.
Alice Holbrook is a former editor of homebuying content at NerdWallet. She has covered personal finance topics for almost a decade and previously worked on NerdWallet's banking and insurance teams, as well as doing a stint on the copy desk. She is based in Ann Arbor, Michigan.
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A savings account is an important way to prepare for big expenses and future goals — even if you start small.
The sooner you start saving, the sooner you can earn interest, money paid over time to your account by the financial institution just for depositing your funds.
Here’s a look at the potential annual earnings of three different savings balances and what you could do with the interest you accrue.
How much interest can you earn on $100?
The national average interest rate for savings is 0.38%, but many national banks pay only 0.01% annual percentage yield (the amount of interest an account earns in a year). If you deposit $100 in one of those savings accounts, you’ll end up with one penny in interest after a year. The best high-yield savings accounts pay around 4% APY right now. After a year, you’d earn more than $4 in interest on your $100.
What your interest can buy: One cent is not enough money to buy much of anything. But putting your money in a high-yield savings account could leave you enough for a coffee.
A balance of $100 doesn’t earn you much interest either way, but the benefit of using the account with a higher APY is clear: It pays much more than a regular savings account.
Annual Percentage Yield (APY) is accurate as of June 17th, 2025. Start earning 2.50% APY, then qualify to earn 5.00% APY on your balance up to $5,000.00 and 2.50% APY on balances over $5,000 next month by 1) Receiving direct deposit(s) totaling $1,000 or more; and 2) Ending the month with a positive balance in all your Varo Accounts. No fees, no minimums required. Rates subject to change at any time.
This offer is only valid for a new Premium Savings Account (“PSA”). The Promotional Annual Percentage Yield (“Promotional APY”) will be automatically applied to the account, and will remain effective for 180 days (the “Promotion Period”), after which it will automatically revert to the Standard Annual Percentage Yield (“Standard APY”) without requiring any action from you. Accounts must be opened by 9/30/26 to qualify for the Promotional APY. No minimum balance required, and the offer may be withdrawn at any time. Excludes non-U.S. residents, and residents of any jurisdiction where this offer is not valid. Other restrictions may apply. Please visit etrade.com/premiumsavings for more information.
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.
The Base Annual Percentage Yield (APY) is 3.30% (from program banks) as of 1/30/26 and is subject to change. Eligible new clients can get a 0.75% APY boost over the base APY for 3 months on up to a $150k balance. The Direct Deposit Plus Investing Program from Wealthfront Advisers LLC and Wealthfront Brokerage LLC provides eligible clients a 0.25% APY increase above the base APY on eligible Cash Account balances. Wealthfront may change or end the program at any time and determine eligibility at its discretion. Terms apply. Full details at wealthfront.com/promo-terms. Cash Account offered by Wealthfront Brokerage LLC, Member FINRA/SIPC, and is not a bank. Base APY is representative, variable, and requires no minimum. Individual experiences and outcomes will differ. NerdWallet receives compensation from Wealthfront for referring clients through paid ads, which creates a conflict of interest; NerdWallet is not a client. Investing involves risks. Securities are not bank deposits, bank-guaranteed or FDIC-insured, and may lose value. Investment management and advisory services provided by Wealthfront Advisers LLC, an SEC-registered investment adviser.
Annual percentage yield (variable) is 3.25% as of 12/12/25, plus a 0.75% boost (“APY Boost”) on balances up to $1M for new clients with a qualifying deposit. $10 min deposit for base APY. Terms apply (betterment.com/boost); if the base APY changes, the Boosted APY will change. Cash Reserve offered by Betterment LLC and requires a Betterment Securities brokerage account. Betterment is not a bank. Learn More (https://www.betterment.com/cash-portfolio).
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.
As of 05/19/2026, the Annual Percentage Yield (APY) of the Certificates of Deposit is up to 4.05%. Your interest rate and APY may change at any time until funding is settled, and penalties may reduce earnings. Settlement date is when funds are received and posted to your account according to our Funds Availability policy, found in section 3 of the Morgan Stanley Private Bank Deposit Account Agreement. The APY is based on no withdrawal of credited interest and no redemption prior to the stated maturity date. Please visit etrade.com/ratesheet for information regarding the current interest rate, corresponding APY, and account terms.
Annual Percentage Yield (APY) is subject to change at any time without notice. Offer applies to personal non-IRA accounts only. Fees may reduce earnings. For CD accounts, a penalty may be imposed for early withdrawals. After maturity, if your CD rolls over, you will earn the offered rate of interest in effect at that time. Visit synchrony.com/banking for current rates, terms and account requirements. Member FDIC.
All Bread Savings APYs are accurate as of 05/21/2026. APYs are subject to change at any time without notice. Offers apply to personal accounts only. Fees may reduce earnings. To open a CD, a minimum of $1,500 is required and must be deposited in a single transaction. A penalty will be imposed for early withdrawals on CDs. At maturity, your CD will automatically renew and earn the base interest rate in effect at that time. Rates are compared against competitor rates published by NerdWallet.com and the institutions themselves as of 05/21/2026. NerdWallet.com obtains the data from the various banks that it tracks and its accuracy cannot be guaranteed.
Annual Percentage Yield (APY). APY may change at any time and fees may reduce earnings. Please visit etrade.com/ratesheet for more information. The $15 monthly account fee can be waived when you maintain an average monthly balance of at least $5,000 in the account on or after the end of the second calendar month from opening the account.
If you’re able to put away a bigger chunk of money, you’ll earn more interest. Save $1,000 for a year at 0.01% APY, and you’ll end up with $1,000.10. If you put the same $1,000 in a high-yield savings account that pays 4% APY, you could earn about $40 after a year.
What your interest can buy: Ten cents is enough to buy a stick of gum — but $40 will buy a date night meal for two or some shares of stock in certain Fortune 500 companies.
How much interest can you earn on $10,000?
In a savings account earning 0.01%, your balance after a year would be $10,001. Put that $10,000 in a high-yield savings account that earns 4% APY for the same amount of time, and you’ll earn about $400.
What your interest can buy: A dollar is enough to buy a soda — but $400 would get you a new TV or kitchen gadget.
When should you start saving?
Saving whatever you can as soon as you can is best. Instead of waiting for a raise at work or an inheritance, it’s more important (and realistic) to begin building a savings habit as soon as possible.
You can start with whatever you can afford; many savings accounts don’t have a minimum opening deposit requirement.
The sooner you earn interest, the sooner you’ll be able to build on it, thanks to compounding. Compound interest works this way: When interest is calculated and added to your account, the larger balance then earns more interest.
Here’s an example: Say you save $1,000 for a year in an account that pays 4% APY, compounded annually. After 12 months, you’ll have $1,040. Then you’ll start earning interest on $1,040, so after the second year you’ll have about $1,080.
Just as important as saving sooner rather than later is choosing the right savings account. Interest rates at online banks are strong across the board right now.
Having your money in a high-yield savings account can help keep your money accessible while also earning you a higher interest rate than you’d get with a regular savings account. Find out where to put your money now by checking out our favorite high-yield online savings accounts.