CD Calculator — Certificate of Deposit Interest Calculator
Calculate CD maturity value and interest earned. Enter principal, APY, and term to see exactly how much your Certificate of Deposit will be worth at maturity.
How CDs Work and How to Calculate Returns
A Certificate of Deposit (CD) pays a fixed APY for a set term, then returns principal plus interest at maturity. Unlike a savings account, CD rates are locked in at the time of deposit — making them predictable for short-to-medium term savings goals. Use the interest calculator to compare CD terms and see total earnings.
- APY vs APR: CDs are quoted in APY (Annual Percentage Yield) which already accounts for compounding frequency — APY is always the right number to compare
- Common terms: 3 months, 6 months, 1 year, 2 year, 5 year — longer terms generally pay higher rates
- Compounding: CDs typically compound daily or monthly — use APY for calculations, not the nominal rate
- FDIC insured: Up to $250,000 per depositor per bank — safe for large balances split across institutions
- Early withdrawal penalty: Typically 90–180 days of interest — plan to hold to maturity
Choose the Right Variant
- This page: CD calculator — maturity value, interest earned, APY comparison
- Interest Calculators: Compound and simple interest calculations
- Savings Account Calculator: Project HYSA growth with regular deposits
- Saving Goal Calculator: Plan contributions to reach a savings target
CD Return Examples (2024 Rates)
- $10,000 at 5.0% APY for 1 year: $10,500 at maturity ($500 interest)
- $25,000 at 5.0% APY for 1 year: $26,250 at maturity ($1,250 interest)
- $50,000 at 4.8% APY for 2 years: ~$54,877 at maturity (~$4,877 interest)
- $10,000 at 4.5% APY for 6 months: ~$10,222 at maturity ($222 interest)
- CD rates have been elevated since 2022–2024 due to Federal Reserve rate increases — check current rates at your bank
Privacy and Data Handling
All calculations run locally in your browser. Your financial data is never sent to any server and is not stored.
Frequently Asked Questions
What is a good CD rate right now?
As of 2024, competitive CD rates at online banks range from 4.5–5.5% APY for 1-year terms — significantly higher than the 0.5–1% rates of 2020–2021. Traditional brick-and-mortar banks often pay much less (sometimes 0.01–0.5% APY). For the best rates, check online banks and credit unions: Ally, Marcus by Goldman Sachs, Discover, and various credit unions consistently offer competitive rates. Rate comparison sites like Bankrate and NerdWallet update current CD rates daily. Lock in high rates before the Fed begins cutting rates.
What is the difference between APY and APR for CDs?
APR (Annual Percentage Rate) is the nominal interest rate without accounting for compounding. APY (Annual Percentage Yield) accounts for compounding and shows the actual effective return over a year. For a CD with 5% APR compounding daily: APY = (1 + 0.05/365)^365 – 1 ≈ 5.127% APY. The difference is small but measurable. CDs are always marketed with APY — it's the correct number to compare across products. When using the interest calculator, use the APY for accurate maturity value projections.
What is CD laddering and why do people use it?
CD laddering is a strategy of spreading money across multiple CDs with different maturity dates. Instead of putting $20,000 into one 5-year CD, you put $5,000 into four CDs maturing in 1, 2, 3, and 4 years. Benefits: (1) as each CD matures, you get access to funds and can reinvest at current rates, (2) you benefit from longer-term rates on some of the money while maintaining liquidity, (3) you avoid being locked out of all funds if rates rise or an emergency arises. As each rung matures, roll it into the longest-term CD in your ladder to maintain the structure.