Free cd (certificate of deposit) calculator
Calculate certificate of deposit maturity value and interest earned — enter deposit amount, APY, and term to see final balance at maturity, updated live, as you type.
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Results are estimates. Consult a professional.
How the CD calculator works
A certificate of deposit (CD) calculator projects how much interest you will earn when you deposit a fixed sum for a set term at a locked rate. Unlike savings accounts, CD rates are fixed for the term — your return is guaranteed from the moment you open the account, which makes the math straightforward.
When a bank advertises an APY, you can apply it directly in the annual formula. When only APR (annual percentage rate) is given, you must account for compounding frequency — daily compounding is standard for most U.S. CDs. Early withdrawal before the term ends typically incurs a penalty of 3 to 6 months of interest, which this calculator can also estimate.
Worked example: $10,000 at 5.25% APY for 12 months
You deposit $10,000 into a 12-month CD at 5.25% APY. The rate is fixed for the full term. How much will you have at maturity, and how much interest will you earn?
CD maturity values by deposit, rate, and term
The table shows total maturity values (principal + interest) for four common deposit amounts at four APY levels across four typical CD terms. All figures assume no early withdrawal.
| Deposit | APY | 6-month | 1 year | 2 year | 5 year |
|---|---|---|---|---|---|
| $5,000 | 4.00% | $5,099 | $5,200 | $5,408 | $6,083 |
| $5,000 | 5.25% | $5,130 | $5,263 | $5,539 | $6,470 |
| $10,000 | 4.75% | $10,236 | $10,475 | $10,976 | $12,614 |
| $10,000 | 5.25% | $10,260 | $10,525 | $11,078 | $12,939 |
| $25,000 | 4.75% | $25,589 | $26,188 | $27,440 | $31,535 |
| $50,000 | 5.50% | $50,680 | $52,750 | $55,653 | $65,622 |
Source: calculated using FDIC national CD rates survey methodology; assumes APY as stated and no early withdrawal.
Tips for getting the most from CDs
CDs offer guaranteed returns and FDIC insurance up to $250,000, making them ideal for money you will not need until the term ends. These strategies help you maximize yield and maintain flexibility.
- Build a CD ladder — instead of putting all your money in one long-term CD, split it among several CDs with staggered maturities (e.g., 3-month, 6-month, 12-month, 2-year). As each one matures you get liquidity and can reinvest at current rates.
- Shop beyond your local bank — online banks and credit unions routinely offer CD rates 0.5–1.5% higher than national bank averages. A 1% rate difference on $25,000 over 2 years is $500 in extra interest.
- Check the early withdrawal penalty before you lock in — penalties range from 30 days to 12 months of interest depending on the bank and term. Know the penalty so you can calculate your break-even point if you withdraw early.
- Time maturities around known expenses — if you know you will need $15,000 for a home repair in 18 months, lock that exact amount in an 18-month CD and let the rate work for you.
- Consider a no-penalty CD for uncertain timelines — some banks offer no-penalty CDs (also called liquid CDs) that allow early withdrawal after a brief holding period. Rates are slightly lower but the flexibility is worth it if your timeline is uncertain.
Accuracy and limitations
This calculator uses the stated APY to project returns. In practice, banks compound daily or monthly, and the disclosed APY already reflects this compounding. The maturity value calculation is accurate for a fixed-rate CD held to term. Early withdrawal penalty estimates are approximations — actual penalty amounts vary by institution and may be calculated differently (e.g., on principal only, or on principal plus accrued interest). Always confirm the exact penalty terms with your bank before opening a CD.
This calculator is provided for educational and planning purposes only. It does not constitute financial advice. CD rates, terms, and penalties differ across institutions. Confirm all details with your bank or credit union before depositing.
CD terms defined
About this CD calculator
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