High-Yield Savings Calculator

Calculate interest earned in a high-yield savings account vs traditional checking.

By Konstantin Iakovlev · Updated September 2026 · Source: FDIC — National Rates and Rate Caps (September 21, 2026 release)

$
%

Interest Earned

$1,248.64

Monthly Interest

$34.68

vs Checking Advantage

$1,218.61

Comparison

High-Yield Savings Interest$1,248.64
Regular Checking Interest (0.1%)$30.03
You Earn Extra$1,218.61

Use the High-Yield Savings Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

Where you park cash changes how fast it grows. Setting a high-yield savings account beside an ordinary checking account here shows compounding at work: the calculator runs your balance at the savings APY you enter and at the 0.1% it assumes for checking, close to the FDIC's national average of 0.07% for interest checking in its September 21, 2026 release.

You enter the balance, the savings account's APY and the number of months; the calculator assumes no further deposits or withdrawals. It reports the interest that balance earns over the period, the average per month, and how much more that is than the same balance would earn in a checking account paying 0.1%.

Small rate gaps look trivial month to month yet compound into real money across years, which is easy to underestimate. APYs do move with the market, but an account paying consistently more will always pull ahead of one paying less. Inflation is the last piece worth weighing, since it determines what your balance is actually worth in real terms.

Example: $10,000 Parked for 3 Years

  1. 1 Enter a balance of $10,000, the APY your savings bank quotes (say 4.00%) and 36 months. The calculator adds no monthly deposits; for a savings plan with contributions, use the compound interest calculator.
  2. 2 Savings: $10,000 × (1.04^3 − 1) = $1,248.64 of interest over the 36 months, an average of $34.68 a month.
  3. 3 Checking at 0.1%: $10,000 × (1.001^3 − 1) = $30.03. The savings account earns $1,218.61 more, the vs Checking Advantage the calculator shows.
  4. 4 APYs move with the market, so rerun it with the rate banks quote today; the gap grows with the balance and with the difference between the two rates.

Source: FDIC — National Rates and Rate Caps (September 21, 2026 release) · Last updated: September 2026

Frequently Asked Questions

How much interest can I earn in a high-yield savings account?
It depends on the APY, which moves with market rates: on a $10,000 balance, each 1% of APY earns about $100 a year. For comparison, the FDIC's national average savings rate was 0.37% in its September 21, 2026 release, about $37 a year on $10,000.
Are high-yield savings accounts safe?
Yes, if the bank is FDIC-insured (or NCUA-insured for credit unions). Your deposits are protected up to $250,000 per depositor per institution. Online banks offering higher rates are just as safe as traditional banks in this regard.
Is a HYSA better than a CD?
A HYSA offers flexibility to withdraw anytime, while CDs lock your money for a fixed term at a guaranteed rate. When HYSA and CD rates are similar, the HYSA is usually better due to liquidity. CDs are better when you want to lock in a high rate before rates drop.

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