High Yield Saving Account Calculator
High-Yield Savings Account Calculator works out Future value and Total you put in from Starting amount, Annual interest rate and Time invested. The default figures on this page give future value of 7,945.36; change any entry and the result, the working and the sources update together.
Your figures
Updates as you typeHow this is worked out
6 steps
- The 4.5% quoted is an APY, so the nominal rate behind it is 12 x ((1 + 4.5%)^(1/12) - 1) = 4.409771%.
- Rate per compounding period = 4.409771% / 12 compounding monthly (12 a year).
- Effective annual yield = (1 + r/n)^n - 1 = 4.5%.
- 100 added monthly (end of period) over 5 years totals 6000.
- Future value after 5 years = 7945.36, of which 945.36 is compound interest on 7000 paid in.
- At this yield the balance doubles every ln(2)/ln(1+i) = 15.75 years.
Year-by-year balancetable
| year | contributions | interest | balance |
|---|---|---|---|
| 1 | 1,200 | 69.55 | 2,269.55 |
| 2 | 1,200 | 126.68 | 3,596.24 |
| 3 | 1,200 | 186.38 | 4,982.62 |
| 4 | 1,200 | 248.77 | 6,431.39 |
| 5 | 1,200 | 313.97 | 7,945.36 |
Its 9 worked examples are re-run on every release, last on 15 September 2026. What changed
Sources and references
4 sources
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Save it, change one figure, then compare the two
The calculation stays free. Save this scenario, adjust one assumption, save that too, and put them side by side to see exactly what the change costs you. A free account keeps 5 scenarios and 2 comparisons; Personal makes both unlimited and adds exports and private links. Nothing is saved unless you press Save.
What the High-Yield Savings Account Calculator calculates
Projects the future value of a lump sum plus recurring contributions under any compounding frequency, and splits the result into principal, contributions and compound interest.
How to use this High-Yield Savings Account Calculator
Enter Starting amount, Annual interest rate, Time invested and Regular contribution. Future value updates as you type. Change one figure at a time to see what drives the result.
How the result is worked out
Open “How this is worked out” beside the result for the step-by-step calculation behind Future value, Total you put in and Of which contributions.
The method follows Compound interest formula A = P(1 + r/n)^(nt), and the future value of an annuity FV = PMT[((1+i)^N - 1)/i], US Securities and Exchange Commission (Investor.gov) - Compound Interest Calculator, 12 CFR Part 1030 (Regulation DD), Appendix A - Annual Percentage Yield Calculation and Pag-IBIG Fund - Modified Pag-IBIG II (MP2) Savings Program.
What you can compare
Change one input at a time to see how it affects Future value, Total you put in and Of which contributions. The inputs you can vary are Starting amount, Annual interest rate, Time invested, Regular contribution, Contribution frequency and Contributions are made.
Results are general information, not financial, tax, legal, medical or engineering advice. Check any decision that matters with a qualified professional.
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Frequently asked questions
Which bank gives 7% interest on savings accounts?
Projects the future value of a lump sum plus recurring contributions under any compounding frequency, and splits the result into principal, contributions and compound interest. On the figures this page opens with — starting amount 10,000, annual interest rate 5% and time invested 10 years — the future value is 7,945.36. Put your own figures in their place and the working updates beside the result.
What is the highest yielding savings account right now?
The calculation is free and does not require an account. An account is only needed for optional features such as saving, comparing, exporting, or sharing supported scenarios.
How much will $50,000 make in a high-yield savings?
On the figures this page opens with — starting amount 10,000, annual interest rate 5% and time invested 10 years — the future value is 7,945.36. No single number fits everyone: change any figure above and the answer updates as you type, with each step of the arithmetic beside it.
What happens if I put $1000 in a high-yield savings account?
It needs Starting amount, Annual interest rate, Time invested, Regular contribution, Contribution frequency and Contributions are made. Nothing else is required, and the figures stay in your browser.
What information do I need for the High-Yield Savings Account Calculator?
You need Starting amount, Annual interest rate, Time invested, Regular contribution, Contribution frequency, Contributions are made, Inflation rate and Tax rate on interest. The page opens with default figures that give future value of 7,945.36, so you can see the scale before entering your own.
What does this High-Yield Savings Account Calculator show?
It shows Future value, Total you put in, Of which contributions, Compound interest earned, Effective annual yield (APY), Equivalent nominal annual rate, Multiple of what you put in and Balance after tax on interest, with the working and any warnings for your entries.