High Yield Savings Calculator

This high yield savings calculator shows how much a high-yield savings account (HYSA) can earn over time. Enter your starting balance, monthly deposit, APY, and time frame in the calculator above to see your projected balance.

It separates the money you contribute from the interest you earn, so the growth is easy to follow. Remember that HYSA rates are variable and can rise or fall at any time.

$61,029 future value$46,000 you put in$15,029 investment growth
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How it's calculated

A high-yield savings account pays interest on your balance, and that interest compounds. Compounding means you earn interest on your past interest, not just your deposits. The calculator above grows your starting balance and each monthly deposit at your chosen APY, compounded monthly, then totals the result. To go deeper on compounding, try the compound interest calculator.

Focus on the APY, not the plain interest rate. The Consumer Financial Protection Bureau notes that APY already reflects how often interest compounds. Because APY bakes in compounding, you can compare one account's APY directly to another's. To plan toward a target balance, use the savings goal calculator.

What is a high yield savings account? A HYSA is an FDIC-insured deposit account that pays a variable APY well above the national average. As of June 2026, the FDIC national savings rate was just 0.38%, while HYSA APYs from online banks typically pay 4x to 5x that. Rates float with the Federal Reserve's target range — when the Fed raises, HYSA APYs usually follow within weeks; when it cuts, they drop just as fast. Your principal never falls, but the yield can.

How to pick the best high yield savings account. Three checks matter more than the headline APY. First, verify FDIC insurance using the FDIC's BankFind tool — coverage is $250,000 per depositor, per bank, per ownership category. Second, look for no minimum balance and no monthly fee; any fee erases your interest edge. Third, read the fine print for promo rates that expire after a few months, tiered APYs that only apply above a threshold, or transfer limits (federal Regulation D caps were lifted, but many banks still enforce their own). We don't rank specific banks here; use these criteria to shop the FDIC national rate cap table and compare live offers, or see our roundup of the best high-yield savings accounts for how several current providers stack up on APY, fees, and minimum balance. For a similar FDIC-insured cash option that often comes with check-writing and a debit card, compare against our money market account guide.

A worked example

Say you start with $10,000 and add $300 every month to a HYSA earning 4.5% APY, compounded monthly. After 10 years, the calculator projects a balance of $61,029.

You contributed $46,000 of that yourself: the $10,000 start plus $300 a month for 120 months. The remaining $15,029 is interest earned.

That extra growth comes from compounding, but note the 4.5% APY is not guaranteed, since HYSA rates can change over time.

Common mistakes to avoid

Frequently asked questions

What does "high-yield savings account" mean?

A high-yield savings account (HYSA) is a savings account — usually offered by an online-only bank or the online division of a traditional bank — that pays a materially higher interest rate (APY) than a standard savings account at a brick-and-mortar bank. It works like any savings account: you deposit money, it earns interest, and you can withdraw it when you need to. The difference is just the yield — like a regular savings account, a HYSA at a member bank remains FDIC-insured up to $250,000 per depositor, per bank, per ownership category.

How accurate is this high yield savings calculator?

This high yield savings calculator is accurate for the inputs you enter, using monthly compounding. Real results will differ because HYSA rates are variable and can change at any time. Treat the projection as an estimate, not a guarantee.

What is the difference between APY and interest rate?

The interest rate is the base percentage your balance earns. APY (annual percentage yield) includes the effect of compounding, so it shows your true yearly return. The CFPB confirms APY reflects how often interest compounds. Always compare accounts by APY.

Is my money in a high-yield savings account safe?

Money in an FDIC-insured bank is protected up to $250,000 per depositor, per bank, per ownership category. That covers savings, checking, money market, and CD balances. If you hold more than the limit, spread it across banks or ownership categories to stay fully insured.

Is a high-yield savings account a good investment?

A HYSA is a strong place for an emergency fund and short-term savings, since the balance is safe and easy to reach. But it usually trails long-term stock market returns. For long-term goals, compare with the investment growth calculator.

Do high-yield savings rates change?

Yes. HYSA rates are variable, so a bank can raise or lower the APY at any time. A rate that looks great today may drop later. The national average savings rate was just 0.38% as of June 2026, so shop around for a higher APY.

Which high-yield savings account is best, or has the highest APY?

There's no single account that stays "best" for long, because the highest APY changes often — banks adjust rates within weeks of Federal Reserve moves, and whichever account leads today may not lead in a few months. That's true no matter where the recommendation comes from, including a specific bank name you saw from a finance influencer. Rather than chasing one "best" pick, compare the current advertised APY across several FDIC-insured online banks, confirm there's no monthly fee or minimum-balance tier that quietly caps your real rate, and re-check periodically since your own bank can lower your rate without matching what a competitor is paying. Our roundup of the best high-yield savings accounts compares ten current providers side by side if you want a starting shortlist.

Can I open a high-yield savings account for my child or teenager?

Yes, but a minor generally needs an adult co-owner or custodian on the account until they turn 18 — a HYSA for a child works differently from an adult's account. See our guide on high-yield savings accounts for kids and teens for the custodial and joint-account rules, age limits, and how interest is taxed for a minor.

Does this calculator work if I don't live in the United States?

Not accurately. This calculator and the FDIC insurance figures throughout this page apply only to U.S. banks. If you save outside the United States, your deposits are protected, if at all, by your own country's deposit scheme instead of the FDIC — see our international high-yield savings accounts guide to find your country's official deposit protection information.

Is a high-yield savings account safe, and is it actually worth it?

Weighed as a whole, yes, for the job it's built for. On the pro side, it pairs full liquidity — withdraw anytime, no lockup period — with FDIC-insured safety and a real yield well above a traditional savings account. On the con side, that yield isn't locked in: the APY is variable and the bank can lower it at any time, sometimes with no advance notice. And even a good APY isn't a guaranteed win against inflation — in stretches where inflation runs hotter than your rate, your money's real (inflation-adjusted) purchasing power can still shrink even as the account balance keeps growing. Net, a HYSA is worth using for money you need to keep safe and reachable — an emergency fund, a house down payment, short-term savings — but it isn't a substitute for long-term investing.

Is high-yield savings account interest taxable, and do I need a tax form?

Yes. The IRS treats savings account interest as ordinary taxable income — taxed at your regular income tax rate, not the lower capital-gains rate. If a bank pays you $10 or more in interest during the year, it will send you a Form 1099-INT, and the IRS receives a copy too. Even if you earn less than $10 and never get a 1099-INT, you're still required to report the interest on your tax return.

Is a high-yield savings account halal, or is it haram?

Generally considered haram by most Islamic scholars. Interest earned on a conventional savings account is typically classified as riba — a category of usury that Islamic finance prohibits — because the return is fixed and guaranteed rather than tied to shared risk in a real economic activity. Observant savers who want to avoid interest income typically look at Sharia-compliant alternatives instead, such as an Islamic bank's profit-sharing (mudarabah) account or a halal investment fund. ModernWallet doesn't endorse a specific Islamic-banking provider — check with a qualified Islamic finance advisor or scholar for guidance on your specific situation.

How do you open a high-yield savings account, and what are the requirements?

At most online banks the process is quick and has few hard requirements: you typically need a valid government ID, your Social Security number, and a way to fund the account (a linked external bank account or a check). Most online HYSAs charge no monthly fee and require no minimum opening deposit or minimum ongoing balance, though this varies by bank, so confirm the specific terms before applying — don't assume every bank's requirement matches another's.

Can you withdraw money from a high-yield savings account, and does it require direct deposit?

Yes, you can withdraw or transfer money out whenever you need to — a HYSA is not a locked account like a CD. The Federal Reserve eliminated the federal six-withdrawal-per-month cap on savings accounts in 2020 and has not reinstated it, though some banks still enforce their own internal transfer limit or fee for frequent withdrawals, so check your specific bank's policy. And despite a common misconception, most high-yield savings accounts do not require direct deposit to open or maintain the account — some banks offer a bonus rate or perk tied to direct deposit, but that's an optional incentive, not a requirement to hold the account itself.

Sources

We prioritize primary sources for rules, formulas, rates, limits, and definitions. See our calculator methodology and editorial policy.

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