Estimate certificate of deposit maturity value, interest earned, early withdrawal penalty, and value after penalty from deposit amount, APY, term, and penalty months.
$10,000 at 4.25% APY for 12 months
The maturity value is the normal end-of-term estimate. The value after penalty is only an early-withdrawal what-if; the bank or credit union disclosure controls the real APY, compounding, maturity date, renewal, grace period, and penalty.
Estimate CD value at maturity from deposit, APY, and term.
Compare term lengths with the same deposit amount.
Estimate the effect of an early withdrawal penalty.
Check a CD offer before reading the full bank disclosure.
$10,425 maturity value and $10,318.75 after penalty
About $96.57 interest and $5,080.32 after penalty
About $30,562.84 maturity value
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Plain-language answers about when to use the estimate, what your numbers mean, what is left out, and how privacy works.
Use it when you want to test the exact inputs on this page: Estimate CD value at maturity from deposit, APY, and term. Compare term lengths with the same deposit amount. The result is a check against your assumptions, not proof that a lender, tax app, broker, platform, or provider will use the same number.
Deposit amount means the money placed into the CD at the start. APY means the annual percentage yield from the CD offer, entered as 4.25 for 4.25%. Term means how many months the CD is meant to stay locked until maturity. Penalty months means a rough early-withdrawal penalty entered as months of interest after you check the account disclosure.
Maturity value is the estimated balance when the CD term ends. For example, a $10,000 CD at 4.25% APY for 12 months estimates a $10,425 maturity value before taxes or account-specific rules.
The penalty field is a simple what-if measured in months of interest. A 3-month penalty on a $10,000 CD at 4.25% APY estimates about $106.25, leaving about $10,318.75 after penalty in the one-year example.
No. APY includes the effect of compounding over a year. The CD offer or bank disclosure controls the official APY, interest rate, compounding method, maturity date, renewal terms, and early-withdrawal penalty.
In plain language: The calculator applies APY growth over the CD term, subtracts the starting deposit to estimate interest earned, then subtracts a manual early-withdrawal penalty measured in months of simple interest for the what-if penalty scenario. For the starter example, $10,000 at 4.25% APY for 12 months gives a $10,425 maturity value. A 3-month simple-interest penalty is about $106.25.
Read maturity value as the normal end-of-term estimate. Read value after penalty as a separate early-withdrawal what-if, not the promised account payout.
This is not a bank or credit union disclosure. It does not include exact daily compounding, APY disclosure rules, renewal choices, grace periods, call features, brokered CDs, minimum balances, insurance limits, taxes, or account-specific early withdrawal terms. Use the bank or credit union disclosure for exact APY, compounding, early-withdrawal penalty, renewal, grace period, tax, and insurance details.
Check the APY, term months, penalty months, maturity date, renewal rules, insurance status, and whether the account has a grace period or call feature.
No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.