WORKED EXAMPLE
$10,000 CD at 5% APY for 1 Year
Estimate the maturity value and gross interest for a one-year CD.
Amounts are shown in USD. Changing currency relabels the same example values; it does not apply an exchange rate.
Assuming a constant 5% APY, monthly compounding, and end-of-month deposits.
- Final balance
- $10,500.00
- Total contributions
- $10,000.00
- Growth / interest
- $500.00
- Monthly amount
- $0.00
| Period | Balance | Contributions | Growth |
|---|---|---|---|
| 12 months | $10,500.00 | $10,000.00 | $500.00 |
How this example is calculated
The APY is converted to a monthly rate, interest is credited, and then the scheduled contribution is added. Real accounts may use daily balances, changing rates, taxes, fees, or different deposit timing.
rₘ = (1 + APY)¹⁄¹² − 1Bₘ = Bₘ₋₁(1 + rₘ) + CAssumptions you can check.
How much interest does this $10,000 CD earn?+
The page separates the 1-year maturity value from the original deposit using a constant 5% APY.
Is an early-withdrawal penalty included?+
No. This worked example assumes the CD is held to maturity. Actual penalties depend on the bank agreement.
Is the CD rate guaranteed?+
Only the issuing institution's disclosures determine whether a rate is fixed and for how long.
Keep the same numbers. Answer the next question.
Check the product rules behind the estimate.
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