CD Calculators

5 free Certificate of Deposit calculators. Calculate earnings, plan CD ladders, estimate early withdrawal penalties, and verify FDIC coverage. FDIC insured up to $250,000 per depositor.

Advertisement

FDIC Insurance: CD deposits at FDIC-member banks are insured up to $250,000 per depositor, per bank for individual accounts, and $500,000 for joint accounts. CD interest is taxed as ordinary income and reported on Form 1099-INT.

All CD Calculators

Choose a calculator to get started.

Advertisement

Understanding CDs: What You Need to Know

A Certificate of Deposit (CD) is a savings product offered by banks and credit unions that typically offers a higher interest rate than a standard savings account in exchange for leaving your money on deposit for a fixed term.

How CD Interest Compounds

Most CDs compound interest daily or monthly, though some compound quarterly or annually. More frequent compounding produces slightly higher returns. The difference between a stated APR and the effective APY (Annual Percentage Yield) reflects the compounding effect. When comparing CDs, always compare APY rather than APR for an accurate picture of your actual yield.

Early Withdrawal Penalties

Most CDs charge an early withdrawal penalty if you access your funds before maturity. Typical penalties:

  • 3-month CD: 1 month of interest
  • 6-month CD: 3 months of interest
  • 1-year CD: 6 months of interest
  • 2-year CD: 6–12 months of interest
  • 5-year CD: 12–18 months of interest

CD Ladder Strategy

A CD ladder involves splitting your deposit across multiple CDs with different maturity dates (e.g., 1-year, 2-year, 3-year, 4-year, and 5-year). As each CD matures, you reinvest in a new long-term CD. This strategy provides both higher yields (from longer-term CDs) and regular access to a portion of your funds each year.

Tax Note: CD interest is taxed as ordinary income in the year it is credited to your account (not when the CD matures for multi-year CDs). Your bank will send a Form 1099-INT each January for interest earned the prior year, including interest accrued on multi-year CDs.

CD Calculator FAQ

The FDIC insures CD deposits up to $250,000 per depositor, per FDIC-insured bank, per ownership category. Joint accounts are insured up to $500,000. If you have more than $250,000 to deposit, you can spread funds across multiple FDIC-insured banks to maintain full coverage. IRAs and other retirement accounts have a separate $250,000 coverage limit.

APR (Annual Percentage Rate) is the simple annual interest rate without compounding. APY (Annual Percentage Yield) reflects the effective annual return after accounting for how often interest compounds. A CD that pays 5.00% APR compounded daily has an APY of approximately 5.13%. When comparing CDs, always use APY for an apples-to-apples comparison. Our CD Interest calculator lets you select your compounding frequency and shows you both figures.

Under normal circumstances, no — CDs at FDIC-insured banks guarantee your principal and stated interest rate. However, if you withdraw early, the penalty may exceed earned interest, potentially resulting in receiving less than your original deposit. Additionally, in real (inflation-adjusted) terms, you may "lose" purchasing power if the CD rate is below the inflation rate. CDs at non-FDIC-insured institutions do not carry federal deposit insurance.

CD interest is generally taxed as ordinary income in the tax year it is credited to your account. For a 1-year CD, all interest is credited at maturity and taxed in that year. For multi-year CDs, the bank typically credits (and reports) accrued interest annually, even if you can't access it until maturity. You will receive a Form 1099-INT from your bank each year showing reportable interest income.

At maturity, most CDs enter a brief grace period (typically 7–10 days) during which you can withdraw funds, renew the CD, or change terms — all without penalty. If you take no action, most banks automatically roll over the CD into a new one with the same term at the current market rate, which may be higher or lower than your original rate. Set a reminder before maturity to evaluate whether to roll over or move the funds.
Data Sources: Freddie Mac PMMS Federal Reserve FDIC IRS No signup required Browser-based calculations