High-Yield Savings Calculator

Enter what you have, what you'll add each month and the annual percentage yield (APY) a high-yield account offers. You'll see what it grows to, year by year, next to the same money at the national average savings rate of 0.38% that the FDIC published on October 19, 2026.

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The comparison starts at the FDIC's national savings rate. Savings rates can change at any time, so this assumes both stay the same. Before tax.

You'll have
$25,402.33 $3,098.29 more

$10,000.00 now and $200.00 a month for 5 years at 4.00% APY grows to $25,402.33. That is $3,098.29 more than at 0.38%.

Interest earned $3,402.33
At 0.38% you'd have $22,304.04
You put in $22,000.00

High-yield against typical, year by year

TimeHigh-yieldAt 0.38%Difference
Year 1$12,843.69$12,442.18$401.51
Year 2$15,801.12$14,893.63$907.49
Year 3$18,876.86$17,354.41$1,522.45
Year 4$22,075.62$19,824.53$2,251.09
Year 5$25,402.33$22,304.04$3,098.29

What is a high-yield savings account?

It is a savings account that pays a higher annual percentage yield (APY) than the national average, which the FDIC put at 0.38% for savings accounts on October 19, 2026. The APY is the interest your money earns in a year, including interest on interest, so it is the number to compare between banks.

Source FDIC · National Rates and Rate Caps ↗CFPB · Regulation DD, Appendix A (annual percentage yield) ↗

How to calculate high-yield savings interest

Spread the APY over 12 months, grow your starting balance by it for every month, and grow each deposit from the month it goes in. With no deposits this is the same as our CD calculator: $10,000 at 4.00% APY for a year is $10,400.00.

Growth each month = (1 + APY) ^ (1 ÷ 12); Balance = Start × Growth^months + Monthly × (Growth^months − 1) ÷ (Growth − 1)

Here it is with your numbers:

  1. Growth each month at 4.00% APY: (1 + 0.04) ^ (1 ÷ 12) = 1.00327374.
  2. Over 60 months: 1.00327374 ^ 60 = 1.2166529.
  3. Your starting balance grows: $10,000.00 × 1.2166529 = $12,166.53.
  4. Each $200.00 deposit grows from the month it goes in: $200.00 × 66.17902363 = $13,235.80.
  5. Add them: $12,166.53 + $13,235.80 = $25,402.33.
  6. The same money at 0.38% grows to $22,304.04.
  7. Difference: $25,402.33 − $22,304.04 = $3,098.29.

It means the higher rate earns you $3,098.29 more over 5 years, on average $51.64 a month.

Source Microsoft Support · FV function ↗

Where the national rate comes from

The FDIC publishes national rates on the third Monday of each month. The savings rate is the average paid by all insured banks and credit unions with data, weighted by their share of deposits, for a $2,500 balance. We check it each month; you can type any rate in "Compare with".

Related tools. Saving for something? Use the Savings goal calculator. Locking money away for a term? Try the CD calculator.

FAQs

How much money will $10,000 make in a high-yield savings account?

At 4.00% APY, $10,000 earns $400.00 in a year if you add nothing and leave the interest in: that is what an APY means. Over 5 years it grows to $12,166.53. Rates change, so use your bank's APY above.

Source CFPB · Regulation DD, Appendix A (annual percentage yield) ↗

How much will $100,000 grow in a high-yield savings account?

At 4.00% APY, $100,000 grows to $104,000.00 in a year. At the national average of 0.38% it would grow to $100,380.00.

Sources

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