🏦 CD Calculator: Certificate of Deposit Interest

How much will your CD or fixed deposit earn?

No ratings yet — be the first

Enter details

Log in or create a free account to save your inputs and results, so you don't have to enter them again next time.🔒 No spam, ever. We never sell or share your details, and you can delete your history or account at any time. Privacy policy

Fill in the details and click Calculate to see your results.

Formula at a glance

CD Calculator: Maturity value — deposit × (1 + APY)^(months ÷ 12). Example: $10,000 for 12 months at 4.2% APY → Value at maturity: $10,420.00
How the CD Calculator works: Maturity value — deposit × (1 + APY)^(months ÷ 12)

📱 Also in our Android app

This calculator is also in our free app. Sign in with the same account to keep your history in sync.

  • Financial CalculatorEMI, SIP, PPF, NPS, post office schemes and government-employee calculatorsGet it on Google Play

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

📘 About the CD Calculator

A certificate of deposit (CD), or fixed-term deposit, pays a guaranteed rate if you leave the money for the whole term. Banks quote APY, which already includes compounding, so the interest is deposit × ((1 + APY)^(years) − 1).

Withdrawing early usually costs several months of interest. In the US CDs are FDIC-insured up to $250,000 per depositor per bank.

🧮 Formula

Maturity value
deposit × (1 + APY)^(months ÷ 12)

✏️ Worked examples

$10,000 for 12 months at 4.2% APY

You enter
Deposit10000
Rate4.2%
Rate isAPY (already compounded)
Compounding (if APR)Monthly
Term12 months
Tax rate on interest0%
Currency$ Dollar
You get
Value at maturity$10,420.00
Interest earned$420.00
APY4.2%
After 0% tax$420.00 interest

$420.00 interest.

$25,000 for 5 years at 3.9%

You enter
Deposit25000
Rate3.9%
Rate isAPY (already compounded)
Compounding (if APR)Monthly
Term60 months
Tax rate on interest0%
Currency$ Dollar
You get
Value at maturity$30,270.37
Interest earned$5,270.37
APY3.9%
After 0% tax$5,270.37 interest

$5,270.37 interest.

🧭 How to use this calculator

What you enter

  • Deposit
  • Rate (%)
  • Rate is
  • Compounding (if APR)
  • Term (months)
  • Tax rate on interest (%)
  • Currency

What you get

  • Value at maturity
  • Interest earned
  • APY
  • After 0% tax

❓ Frequently asked questions

How much does a $10,000 CD earn in a year?

At 4.2% APY, $420 before tax.

Is CD interest taxable?

Yes in most countries; in the US it is taxed as ordinary income in the year it is credited.

What is a CD ladder?

Splitting money across CDs with different terms so some matures every few months or each year.

APY vs interest rate?

APY includes compounding; the interest rate does not. Compare offers by APY.