Savings Interest Rate Finder
Solve for the APY you need to reach a savings target, or convert a nominal rate to APY.
Inputs
How it works
We invert FV = PV(1+i)^N + PMT·((1+i)^N − 1)/i via bisection, where i = APY/12 and N = years × 12. Assumes monthly compounding, end-of-period deposits. APY conversion uses APY = (1 + r/n)^n − 1.
Frequently asked questions
Where should I park savings?
Short-term goals: high-yield savings or short CDs. Long-term: a diversified portfolio.
How big should my emergency fund be?
Most planners suggest 3–6 months of essential expenses, more if income is variable.
What's APY?
Annual Percentage Yield — the rate including compounding. Always compare APYs, not APRs.
Are bank accounts safe?
FDIC-insured accounts are protected up to $250,000 per depositor per bank per ownership category.
Should I lock money in a CD?
Only if you don't need it during the term — early withdrawals carry penalties.
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View all savings →Results are estimates for educational purposes only and are not financial advice. Verify with a qualified professional before making decisions.
Last updated January 1970