CD Calculator (Certificate of Deposit) (2026)
Calculate Certificate of Deposit (CD) returns, annual percentage yield (APY), and total interest earned.
United States Calculator
Adjust Your Inputs
Move the sliders or type exact numbers. Results update instantly.
Instant Estimate
Your Results
Total Ending Balance
$10,486
Based on your selected cd calculator assumptions. Try different sliders to compare scenarios.
Total Interest Earned
$486
Avg Monthly Interest
$41
These calculations are financial projections and planning estimates, not tax, legal or licensed financial advice. 2026 IRS thresholds and mortgage lender rates vary by location.
2026 Certificate of Deposit (CD) Interest & Return Matrix
Compare total dollar interest earnings across popular CD terms. Factoring in current 2026 top online bank and credit union APYs with daily compounding.
CD Interest Earned by Initial Deposit & Term
Net interest earned before federal taxes. Daily compounding interest applied.
| Deposit Amount | 3-Month (4.50% APY) | 6-Month (4.75% APY) | 1-Year (5.00% APY) | 2-Year (4.25% APY) | 5-Year (3.80% APY) |
|---|---|---|---|---|---|
| $2,500 | +$28 | +$59 | +$125 | +$217 | +$512 |
| $5,000 | +$56 | +$119 | +$250 | +$434 | +$1,024 |
| $10,000 | +$112 | +$238 | +$500 | +$868 | +$2,049 |
| $25,000 | +$281 | +$594 | +$1,250 | +$2,170 | +$5,122 |
| $50,000 | +$562 | +$1,188 | +$2,500 | +$4,340 | +$10,244 |
| $100,000 | +$1,125 | +$2,375 | +$5,000 | +$8,680 | +$20,489 |
How to Build a 2026 CD Ladder
Instead of locking $20,000 into a single 5-year CD, divide it into 4 equal slices of $5,000 invested in 1-Year, 2-Year, 3-Year, and 4-Year CDs. Every 12 months, one CD matures, providing cash liquidity or the opportunity to reinvest at prevailing market APYs without incurring early withdrawal penalties.
FDIC & NCUA Protection ($250,000)
Bank CDs are federally insured by the FDIC (or NCUA for credit unions) up to $250,000 per depositor, per insured institution. Unlike stock or bond funds, CD principal is 100% immune to stock market volatility or economic recessions.
How to Use the CD Calculator
Enter initial deposit amount
Input how much cash you want to lock into the Certificate of Deposit.
Set bank APY rate
Enter the quoted Annual Percentage Yield (e.g., 4.5% to 5.25%).
Select CD term length
Choose term duration in months (3, 6, 12, 24, 36, or 60 months).
Formula & Calculation Methodology
A = P × (1 + r/n)^(n × t)This calculator uses standard United States financial formulas, IRS thresholds, and amortization schedules. All results compute instantly in your browser with zero data stored or transmitted.
Calculation Examples & Scenarios
1-Year High-Yield CD
$10,000 deposit at 4.75% APY for 12 months.
5-Year CD Ladder Step
$25,000 deposit at 4.25% APY compounded daily for 60 months.
Key Benefits
- Guaranteed, predictable fixed returns backed by federal FDIC insurance
- Zero risk of principal loss up to $250,000 per depositor per bank
- Locks in high interest rates even if the Federal Reserve cuts rates
Common Use Cases
- Safely parking money for a down payment or wedding within 1–3 years
- Building a CD ladder for regular rolling liquidity
- Retirees seeking risk-free fixed cash-flow yields
How to Build a High-Yield CD Ladder
A CD ladder is a popular cash-management strategy that protects you from interest rate volatility while ensuring regular access to your money. Instead of putting $40,000 into a single 4-year CD, you split the funds equally across 1-year, 2-year, 3-year, and 4-year CDs.
As each CD matures every 12 months, you can either cash out penalty-free or reinvest into a new top-tier 4-year CD at the prevailing rate.
Frequently Asked Questions
A Certificate of Deposit (CD) is an FDIC-insured savings product where you lock in a fixed interest rate for a predetermined term (e.g., 6 months to 5 years). The APY (Annual Percentage Yield) reflects the total interest earned including compounding over 1 year.
Yes. CDs issued by FDIC-member banks and NCUA-member credit unions are backed by the full faith and credit of the US government up to $250,000 per depositor, per insured institution.
Most banks compound CD interest either daily or monthly and add it to your balance. Daily compounding yields slightly more total return over time compared to simple annual compounding.
Cashing out a CD prior to maturity results in an early withdrawal penalty (EWP). For CDs under 12 months, penalties are typically 90 days of interest. For 1 to 5-year CDs, penalties usually equal 180 to 365 days of interest.
A CD ladder divides your savings into multiple equal tranches invested across different maturities (e.g. 6-month, 12-month, 18-month, and 24-month CDs). As each CD matures, you can reinvest at prevailing market rates or access cash without paying penalty fees.
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