CD Calculator

Calculate certificate of deposit interest, APY and maturity value.

Currency

Deposit

Rate

Rate type

Compounding (for APR)

Term

Unit

Tax on interest (optional)

Enter your values to see the result.

Results are estimates for planning only. Actual figures depend on your lender or bank, fees, rounding and the exact dates used, so confirm the numbers before you sign anything.

Processing and privacy

Processing varies by tool. Check the instructions for local processing, server requests, external services and any file or request limits before entering sensitive information.

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How this calculation works

Understand the method, inputs and limits behind your result.

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Formula: Balance = deposit × (1 + annual rate/100/m)^(m × years), where m is compounds/year. Interest = balance − deposit; apply the entered tax rate to interest.
Variables: Deposit
Rate
Rate type: APY, APR
Compounding (for APR): Daily, Monthly, Quarterly, Yearly
Term
Unit: Months, Years
Tax on interest (optional)
Units: Rate: %
Tax on interest (optional): %
Use the same selected currency for all monetary inputs. Changing the symbol does not convert exchange rates.
Example: 10,000 in a 12-month CD at 4.5% APY is worth 10,450 at maturity.
Assumptions: Results are estimates for planning only. Actual figures depend on your lender or bank, fees, rounding and the exact dates used, so confirm the numbers before you sign anything.
Source: ToolzHive calculation guide and calculator implementation. External reference verification is pending.
Last reviewed: Review date not yet recorded.

Methodology & References

The method depends on the selected model and input options. Review the assumptions and references above before interpreting the result.

Enter the deposit.
Enter the rate, choose APY or APR and the compounding, then the term.
Read the maturity value and interest.

Interpretation and limitations

What is the difference between APR and APY? APY includes compounding, so it is the real yearly return. APR is the rate before compounding.
Can I withdraw early? Usually with a penalty of several months of interest.

References

External reference verification is pending. The formula and examples describe the current ToolzHive implementation.

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Clear instructions

Find steps, examples and limitations below.

Use online

Open the tool in a supported web browser.

Free to use

No sign-up required. Tool-specific limits may apply.

How to use the CD Calculator

Calculate certificate of deposit interest, APY and maturity value.

1 Enter the deposit.
2 Enter the rate, choose APY or APR and the compounding, then the term.
3 Read the maturity value and interest.

Example and practical tips

10,000 in a 12-month CD at 4.5% APY is worth 10,450 at maturity.

Frequently asked questions

What is the difference between APR and APY?

APY includes compounding, so it is the real yearly return. APR is the rate before compounding.

Can I withdraw early?

Usually with a penalty of several months of interest.

How to Use CD Calculator
Calculate the interest, APY and maturity value of a certificate of deposit from the deposit, rate (APY or APR), compounding and term, with optional tax.