π US Bond Maturity Calculator
Calculate bond price, yield to maturity (YTM), duration, convexity, and total return. Supports Treasury, corporate, and municipal bonds with custom coupon frequencies. Includes full cash flow schedule and price-yield curve visualization.
What Is a Bond Maturity Calculator?
A bond maturity calculator helps you value fixed-income securities by calculating the present value of all future cash flows , coupon payments and principal repayment at maturity. It provides key metrics including bond price, yield to maturity (YTM), duration, and convexity.
This calculator supports:
- US Treasury Bonds , issued by the U.S. government, considered "risk-free".
- Corporate Bonds , issued by companies, offering higher yields with credit risk.
- Municipal Bonds , issued by states and cities, often tax-exempt.
How Does the Bond Maturity Calculator Work?
The calculator uses the standard bond pricing formula:
Bond Price = Ξ£ (C / (1 + r)t) + (F / (1 + r)n)
Where: C = coupon payment, r = yield per period,
t = period, F = face value, n = total periods
The calculator performs the following steps:
- Calculates periodic coupon payments , based on coupon rate and frequency.
- Discounts all cash flows , using the yield to maturity (YTM).
- Computes bond price , the sum of all discounted cash flows.
- Calculates Macaulay Duration , the weighted average time to receive cash flows.
- Calculates Modified Duration , price sensitivity to yield changes.
- Calculates Convexity , second-order price correction.
- Generates a full cash flow schedule , showing every payment period.
Why Use This Bond Maturity Calculator?
- Comprehensive Metrics: Price, YTM, duration, convexity, and current yield in one tool.
- Multi-Bond Support: Treasury, corporate, and municipal bonds with custom coupon frequencies.
- Full Cash Flow Schedule: See every payment period with discounted values.
- Price-Yield Curve: Visualize how price changes with varying yields.
- Free & Private: No registration, no data storage , all calculations in your browser.
β Bond Maturity Calculator FAQ
What is yield to maturity (YTM)?
Yield to maturity is the total annualized return you will earn on a bond if you hold it until it matures, assuming all coupon payments are reinvested at the same rate. It accounts for the bond's current market price, face value, coupon rate, and time to maturity.
What is the difference between a Treasury bond, note, and bill?
Treasury bonds mature in 20 or 30 years, Treasury notes mature in 2β10 years, and Treasury bills mature in less than one year. T-bills are sold at a discount and don't pay periodic interest.
What is bond duration?
Macaulay duration is the weighted average time until cash flows are received. Modified duration measures price sensitivity , the approximate percentage price change for a 1% change in yield.
What is convexity?
Convexity corrects duration for large yield changes. It accounts for the fact that the price-yield relationship is curved, not linear, and is especially important when yields move significantly.
What is a premium, par, or discount bond?
A bond trades at premium when price > face value (coupon rate > YTM), at par when price = face value (coupon = YTM), and at discount when price < face value (coupon < YTM).
What is current yield?
Current yield is the annual coupon payment divided by the current market price. It measures the income return relative to price, but doesn't account for capital gains or losses at maturity.
How does coupon frequency affect bond pricing?
More frequent coupon payments (semi-annual vs. annual) result in slightly higher bond prices because investors receive cash flows sooner, reducing reinvestment risk and increasing present value.
How accurate is this calculator?
This calculator provides accurate estimates based on standard bond pricing formulas. For educational purposes only , consult a financial professional for investment decisions.
Is this calculator free to use?
Yes, this calculator is completely free to use. No registration or personal data storage is required. All calculations run in your browser.
What is the difference between municipal and corporate bond yields?
Municipal bonds are often tax-exempt, so their yields are lower than corporate bonds. The tax-equivalent yield allows comparison: TEY = Muni Yield / (1 β Marginal Tax Rate).