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CD Calculator

Use this CD calculator to compare a finance scenario for CD with visible assumptions and source notes.

Primary answer
Maturity value
Inputs to verify
Deposit amount, Annual percentage yield, and Term
Use type
Use as an estimate that depends on assumptions.
Keyword intent
CD calculator

Calculator

CD Calculator

Calculates maturity value from deposit amount, annual percentage yield, term. Defaults are filled in so you can review a working example before changing inputs.

USD

Starting CD deposit. This calculator assumes the money stays in the CD until maturity.

%

Use 4.5 for 4.5% APY, not 0.045. APY already reflects annual compounding effects.

months

Whole number of months until the CD matures.

Result

Result reflects the current submitted inputs.

  • Risk B
  • Reviewed 2026-05-26
  • 3 sources
Maturity value10,450 USD
Interest earned450 USD
Term in years1 years
Total return4.5%

Breakdown

Annual percentage yield
4.5%
Term in years
1 years
  • Annual percentage yield input 4.5 means 4.5%, not 0.045.
  • APY already reflects annual compounding effects when interest remains on deposit.
  • Term converts months to years as months / 12; actual institutions may accrue by days.
  • Early withdrawal penalties, taxes, account fees, brokered CD rules, callable CD features, and deposit insurance limits are excluded.
  • This is an educational estimate, not financial advice or a bank disclosure.

Accuracy notes

Risk level
B
Reviewed
2026-05-26
Sources
3
Primary result
Maturity value

Formula logic is kept in a pure calculator module with fixtures, source notes, and page-visible assumptions.

Categories

What the result means

Use Maturity value as the headline answer for CD. Estimated principal plus reinvested interest at maturity. Read the main estimate first, then compare it with the assumptions and secondary outputs before using it in a decision. Use interest earned, term in years, and total return to explain why maturity value moved when an input changed. Compare the result with the source document or quote that will actually govern the decision. Check rates, dates, fees, taxes, local rules, compounding, and omitted real-world charges before treating the result as final.

Maturity valueEstimated principal plus reinvested interest at maturity.
Interest earnedEstimated interest before penalties, taxes, or fees.
Term in yearsTerm converted as months divided by 12.
Total returnInterest earned divided by the deposit amount.

Use the result this way

  1. Start with Maturity value, then use supporting outputs only to explain the primary answer.
  2. Verify deposit amount, annual percentage yield, and term before copying the result.
  3. Keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and enter percentages as whole percents, such as 6.5 for 6.5%, unless a field says otherwise.
  4. Compare the result with the source document or quote that will actually govern the decision.

User job

How to use this calculator

Use CD Calculator when you need maturity value, then use interest earned and term in years to check the context for planning conversations, quote comparisons, payment checks, and scenario review.

Best for

  • Comparing one financial scenario with another
  • Preparing questions for a lender, advisor, or statement review
  • Reviewing a default example before entering your own deposit amount and annual percentage yield.

Check before relying

  • Verify rates, fees, timing, taxes, and local rules against official documents before acting.
  • Annual percentage yield input 4.5 means 4.5%, not 0.045.
  • APY already reflects annual compounding effects when interest remains on deposit.
  • Source context: Consumer Financial Protection Bureau, reviewed 2026-05-26.

Next useful step

  • Annuity CalculatorUse next when the investment task needs future value instead of maturity value.
  • Interest CalculatorUse next when the investment task needs interest amount instead of maturity value.
  • Bond CalculatorUse next when the investment task needs price from yield instead of maturity value.

Formula

Maturity value = principal x (1 + annualPercentageYield / 100) ^ (termMonths / 12). Key assumptions: Annual percentage yield input 4.5 means 4.5%, not 0.045. APY already reflects annual compounding effects when interest remains on deposit. Term converts months to years as months / 12; actual institutions may accrue by days.

  • Maturity value = principal x (1 + annualPercentageYield / 100) ^ (termMonths / 12).
  • Annual percentage yield input 4.5 means 4.5%, not 0.045.
  • APY already reflects annual compounding effects when interest remains on deposit.
  • Primary source context: Consumer Financial Protection Bureau.

Inputs

Enter deposit amount, annual percentage yield, and term for planning conversations, scenario checks, and lender or statement comparison. Before calculating, keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and enter percentages as whole percents, such as 6.5 for 6.5%, unless a field says otherwise. Deposit amount: Starting CD deposit. This calculator assumes the money stays in the CD until maturity. Annual percentage yield: Use 4.5 for 4.5% APY, not 0.045. APY already reflects annual compounding effects. Term: Whole number of months until the CD matures.

Deposit amountStarting CD deposit. This calculator assumes the money stays in the CD until maturity.
Annual percentage yieldUse 4.5 for 4.5% APY, not 0.045. APY already reflects annual compounding effects.
TermWhole number of months until the CD matures.

Example

Using the default inputs, CD Calculator returns maturity value of 10,450 USD. Adjust deposit amount, annual percentage yield, and term to match your own scenario.

FAQ

How is maturity value calculated here?

Maturity value = principal x (1 + annualPercentageYield / 100) ^ (termMonths / 12). The first assumption to check is: Annual percentage yield input 4.5 means 4.5%, not 0.045.

What does Maturity value mean for CD?

Read the main estimate first, then compare it with the assumptions and secondary outputs before using it in a decision. Secondary values such as interest earned, term in years, and total return are there to explain the primary answer, not to replace it.

What should I enter for Deposit amount?

Starting CD deposit. This calculator assumes the money stays in the CD until maturity. Use USD for this field. Keep units consistent with the labels shown in the form, stay within the documented minimum and maximum ranges, and enter percentages as whole percents, such as 6.5 for 6.5%, unless a field says otherwise.

How does Annual percentage yield change maturity value?

Use 4.5 for 4.5% APY, not 0.045. APY already reflects annual compounding effects. Changing it can alter maturity value because the formula uses the submitted inputs together. Also compare rates, dates, fees, taxes, local rules, compounding, and omitted real-world charges.

Why does the CD example show 10,450 USD for maturity value?

The default inputs produce 10,450 USD for maturity value. Treat that as a format and scale check, then replace every default value with your own inputs.

Can the CD result replace financial advice?

No. Use the CD result as comparison context only. Market returns, taxes, fees, legal terms, and personal constraints can change the real outcome.

Sources

Last reviewed: 2026-05-26

  • Reviewed 2026-05-26
    What is a certificate of deposit (CD)?Consumer Financial Protection Bureau. CD user intent, term/maturity assumptions, early withdrawal exclusion, and educational finance disclaimer.
    Scope
    U.S. consumer education reference for certificate of deposit terms, interest, maturity, early withdrawal penalties, and insurance caveats.
    Supports
    CD user intent, term/maturity assumptions, early withdrawal exclusion, and educational finance disclaimer.
  • Reviewed 2026-05-26
    Certificates of Deposit (CDs)Investor.gov. Principal plus interest at redemption, fixed term framing, and risk/disclosure limitations.
    Scope
    U.S. investor education reference for CDs as fixed-amount, fixed-period deposit products that pay interest.
    Supports
    Principal plus interest at redemption, fixed term framing, and risk/disclosure limitations.
  • Reviewed 2026-05-26
    Contemporary Mathematics, 6.4 Compound InterestOpenStax. APY/effective annual yield interpretation and exponent-based growth formula.
    Scope
    Open educational math reference for compound interest and effective annual yield.
    Supports
    APY/effective annual yield interpretation and exponent-based growth formula.

Disclaimer

This finance calculator is for educational estimates only. It is not financial advice, a lender quote, tax advice, legal advice, or a substitute for reviewing actual contracts, rates, fees, disclosures, and local rules.