COMPOUND GROWTH, MADE CLEAR
APY Calculator
See how your savings can grow—with contributions, compounding, and time made visible.
Currency changes the display unit (USD) only; amounts are not converted using exchange rates.
Interest contributes an estimated $1,894.57; the rest comes from deposits.
APY already includes compounding; the cadence below only converts it to an equivalent nominal APR.
| Period | Balance | Contributions | Interest |
|---|---|---|---|
| Year 1 | $12,899.11 | $12,400.00 | +$499.11 |
| Year 2 | $15,928.67 | $14,800.00 | +$1,128.67 |
| Year 3 | $19,094.57 | $17,200.00 | +$1,894.57 |
Keep the same numbers. Answer the next question.
How the APY Calculator works
Calculations run entirely in your browser. APY is converted to an effective monthly rate, contributions follow the selected schedule, and the entered yield is held constant. Weekly and biweekly amounts are distributed evenly across months. Results are estimates, not a bank quote.
Check the product rules behind the estimate.
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Small details. Big difference.
APY vs APR: what’s the difference?+
APR is the stated annual rate before compounding. APY includes compounding, so it is the better apples-to-apples number for deposit accounts.
Does daily compounding beat monthly compounding?+
At the same APR, usually yes—slightly. At the same APY, the annual result is the same because APY already captures compounding frequency.
HYSA vs CD: which should I choose?+
A high-yield savings account is typically flexible and variable-rate. A CD usually locks funds and rate for a term. Compare access needs, penalties, rate, and deposit insurance.
How should I compare banks?+
Compare APY on the same date, balance requirements, fees, rate tiers, withdrawal access, deposit insurance, and how long a promotional rate lasts.