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CD maturity value plus early-withdrawal penalty simulation.
💰 Early-withdrawal penalties are charged against accrued interest (never principal) at most US banks — typically 3 months of interest for short CDs and up to 12 for 5-year terms. The "Early exit at" slider lets you model breaking the CD partway through.
A Certificate of Deposit (CD) trades flexibility for yield: you lock a lump sum for a fixed term (3 months to 5 years) and the bank pays a guaranteed rate — often beating savings accounts. The catch is the early-withdrawal penalty: break the CD early and you forfeit several months of interest.
The balance grows as A = P × (1 + r/n)^(n·t), where r is the annual rate, n the compounding frequency (daily, monthly, or quarterly), and t the term in years. Because the rate is fixed, the maturity value is known to the penny on day one — that certainty is the whole point of a CD.
US banks typically charge 1 month of interest for CDs under 12 months, 3 months for 12-48 month terms, and 6-12 monthsfor 5-year CDs. Penalties come out of accrued interest, never principal — but if you exit in month 2 of a 3-month CD, the penalty can wipe out everything you earned. Use the "Early exit at" slider to see exactly what breaking the CD would cost you at any point.
Instead of one 5-year CD, split the money across 1/2/3/4/5-year terms. As each rung matures you either take the cash or reinvest at the 5-year rate — giving you annual liquidity AND long-term rates. Rate-cut cycles are when laddering shines: you keep rolling maturing rungs into whatever the new normal is.
Disclaimer: This calculator is for informational and educational purposes only and does not constitute financial, investment, or legal advice. Calculated results are estimates based on the inputs you provide; actual figures may vary. Always consult a qualified professional before making financial decisions.
The CD Calculator lets you figure out cd calculatorinstantly, without reaching for a spreadsheet or doing the math by hand. Whether you're planning a budget, checking a loan, or working through homework, the tool applies the correct formula behind the scenes and shows the result the moment you enter your numbers.
Unlike a static chart or table, this calculator adapts to your exact inputs. You can adjust any value and see the outcome update in real time, which makes it easy to compare scenarios — for example, "what if the rate were 1% lower?" or "what if I paid an extra $50 a month?"
Common uses: people reach for this tool when they need to find a certificate of deposit maturity value calculator, cd early withdrawal penalty calculator, how much will my cd be worth, or cd ladder calculator monthly interest.
Browser-based tools like this one have a few real advantages over installed software or manual methods:
The CD Calculator is based on the following formula:
Maturity = P × (1 + r/n)^(n·t) · Penalty = P × (r/12) × penalty months
Variables: Maturity = Value at the end of the term ($) P = Principal deposit ($) r = Annual interest rate (decimal) n = Compounding periods per year (12 for monthly) t = Term length (years) Penalty = Early-withdrawal penalty ($) penalty months = Months of interest forfeited
Certificate of Deposit value at maturity with r = annual rate, n = compounding frequency, t = term in years. An early exit keeps accrued interest minus the penalty, which banks quote as months of interest on principal — never touching principal itself.
Worked example: Step 1: P = $25,000, 12-month CD at 4.60% compounded monthly → r = 0.046, n = 12, t = 1. Step 2: (1 + 0.046/12)^12 = 1.0038333^12 ≈ 1.04698. Step 3: Maturity = 25,000 × 1.04698 ≈ $26,174.55 (about $1,174.55 interest earned). Step 4: one month of interest = 25,000 × 0.046 / 12 ≈ $95.83; a 3-month penalty = 3 × 95.83 = $287.50. Result: the CD matures at about $26,174.55; cashing out early costs about $287.50 of earned interest.
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