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CD Calculator

Calculate Certificate of Deposit earnings with compound interest. Compare different terms, rates, and compounding frequencies to maximize your savings.

CD Returns

Final Balance

$10,513

Total Interest$513
APY5.127%
Effective Return5.13%

CD Details

Initial deposit, APR, and term length

$
%

CD Summary

Final Balance at Maturity

$10,513

After 12 months

Total Interest Earned

$513

5.13% total return

Principal

$10,000

APR

5%

APY

5.127%

Interest/Month

$43

CD Growth Over Time

See your balance grow over the term

Compounding Frequency Comparison

CompoundingAPYInterestFinal Balance
daily5.127%$513$10,513
monthly5.116%$512$10,512
quarterly5.095%$509$10,509
semi annually5.062%$506$10,506
annually5.000%$500$10,500

CD Ladder Strategy

Divide your deposit into multiple CDs with staggered terms for better liquidity

CDAmountTermEst. Interest
CD #1$2,0001 Year$103
CD #2$2,0002 Years$210
CD #3$2,0003 Years$324
CD #4$2,0004 Years$443
CD #5$2,0005 Years$568
Total$10,000Laddered$1,647

Typical CD Rates (Reference)

Rates vary by bank and market conditions. Check current rates before opening a CD.

3 Mo

4.50%

6 Mo

4.75%

1 Year

5.00%

2 Years

4.50%

5 Years

4.25%

* Rates shown are for illustration. Actual rates depend on market conditions and individual banks.

CD Returns

Final Balance

$10,513

Total Interest$513
APY5.127%
Effective Return5.13%

What if I got a better rate?

See how different APR affects your CD earnings

1.00%5.00%8.00%
Total Interest
$513
APY
5.127%
Final Balance
$10,513

Personalized Insights

2 insights based on your inputs

Competitive Rate

5% is among the best CD rates available. Lock in this rate before the market changes.

CD Ladder Strategy

Split your deposit across 1-5 year CDs. As each matures, reinvest in 5-year CDs for better rates with annual liquidity.

Frequently Asked Questions

What is a Certificate of Deposit (CD)?

A Certificate of Deposit is a savings product where you deposit money for a fixed term at a fixed interest rate. CDs typically offer higher rates than regular savings accounts because you commit to leaving your money untouched until maturity. Early withdrawal usually incurs a penalty.

What is APY vs APR?

APR (Annual Percentage Rate) is the simple interest rate without compounding. APY (Annual Percentage Yield) includes the effect of compound interest and shows your actual return. A 5% APR compounded monthly has an APY of about 5.12%. Always compare APY when shopping for CDs.

How does compounding frequency affect my return?

More frequent compounding means higher returns. Daily compounding earns slightly more than monthly, which earns more than annually. For example, $10,000 at 5% for 1 year: daily compounding = $512.67 interest, annual = $500. The difference grows with larger amounts and longer terms.

What happens if I withdraw early from a CD?

Early withdrawal typically incurs a penalty, often 3-6 months of interest depending on the term. Some CDs have no-penalty options with slightly lower rates. Always check the early withdrawal penalty before opening a CD, especially for longer terms.

Are CD earnings taxable?

Yes, CD interest is taxable as ordinary income, even if you don't withdraw it. You'll receive a 1099-INT form for interest over $10. Consider tax-advantaged accounts (IRA CDs) or municipal bonds if you're in a high tax bracket.

What is a CD ladder?

A CD ladder involves buying multiple CDs with staggered maturity dates. For example, buy 5 CDs maturing in 1, 2, 3, 4, and 5 years. This provides regular access to funds while capturing higher long-term rates. As each CD matures, reinvest in a new 5-year CD.

Formula:
By Joseph OrdunaHow this works

How this works

Treats a CD as a fixed-rate deposit with no principal-loss risk up to the FDIC insurance limit. Early withdrawal penalties vary by bank — check the specific CD disclosure.

What this tool can’t do

When to consult a professional

This is a software engineering tool, not financial advice. Run the math here, then take the result to a certified financial planner, CPA, or your bank before making a decision that materially affects your money.

Sources

  1. [1]
    Consumer Financial Protection Bureau (CFPB)
    Official sourceconsumerfinance.govAccessed Apr 21, 2026

    US consumer finance regulator; authoritative on mortgage disclosures, APR rules, credit cards.

  2. [2]
    Federal Deposit Insurance Corporation (FDIC)
    Official sourcefdic.govAccessed Apr 21, 2026
Joseph Orduna
Founder & Software Engineer

Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).