CD Calculator
Estimate CD maturity value, interest earned, and APY by term length and compounding frequency.
Disclaimer: This calculator is for informational and educational purposes only and does not constitute financial advice. Results are estimates based on the inputs provided. Consult a qualified financial advisor before making any financial decisions.
What Is a Certificate of Deposit (CD)?
A Certificate of Deposit (CD) is a savings product offered by banks and credit unions that pays a fixed interest rate for a specified term. CDs typically offer higher interest rates than regular savings accounts because you agree to leave your money deposited for a set period — ranging from a few months to several years. Early withdrawal usually results in a penalty, so CDs are best suited for money you won't need immediate access to.
How CD Interest and Compounding Work
CD interest is calculated using compound interest, meaning you earn interest on both your initial deposit and any previously earned interest. The compounding frequency — daily, monthly, quarterly, or annually — affects your total return. More frequent compounding results in a higher effective yield. The Annual Percentage Yield (APY) accounts for compounding and represents the true annual return on your investment, making it the best metric for comparing CDs across different institutions.
CD Laddering Strategy
CD laddering is a strategy where you split your investment across multiple CDs with staggered maturity dates. For example, instead of investing $10,000 in a single 5-year CD, you might invest $2,000 each in 1-year, 2-year, 3-year, 4-year, and 5-year CDs. As each CD matures, you reinvest into a new 5-year CD. This approach provides regular access to portions of your funds while still capturing higher long-term rates.
Frequently Asked Questions
What is the difference between APR and APY?
APR (Annual Percentage Rate) is the simple interest rate without accounting for compounding. APY (Annual Percentage Yield) includes the effect of compounding and represents the actual return you earn over a year. APY is always equal to or higher than APR.
Are CDs FDIC insured?
Yes, CDs at FDIC-insured banks are protected up to $250,000 per depositor, per institution. Credit union CDs (often called share certificates) are similarly insured by the NCUA.
What happens if I withdraw early from a CD?
Early withdrawal typically results in a penalty, often equal to several months of interest. The exact penalty varies by institution and CD term. Some banks offer no-penalty CDs, but these usually come with lower interest rates.
How does compounding frequency affect my CD return?
More frequent compounding results in a slightly higher return. For example, a CD compounded daily will earn more than one compounded annually at the same stated rate, because interest is added to your balance more often and itself begins earning interest sooner.
When is the best time to open a CD?
CDs are most attractive when interest rates are high or expected to decline, as they lock in the current rate. If rates are rising, you might prefer shorter terms or a CD ladder to avoid missing out on future rate increases.