Bond Yield Calculator
Determine the true return on any bond investment. Calculate current yield for immediate income or yield to maturity for total return through maturity.
Current Yield: Income Focus
Current yield measures the annual income a bond produces relative to its market price. The formula is simple: divide the annual coupon payment by the purchase price. A bond paying $50 per year that costs $1,000 has a 5% current yield. If that same bond's price drops to $900, the current yield rises to 5.56%, even though the actual dollar payment remains $50.
Income investors prioritize current yield because it directly affects cash flow. Retirees building bond ladders care about the checks hitting their account every six months. Current yield tells them exactly how much income to expect per dollar invested.
However, current yield ignores what happens at maturity. A bond bought at a discount will eventually redeem at face value, producing a capital gain. A bond bought at a premium will redeem below purchase price, producing a loss. Current yield captures only one piece of the total return puzzle.
Yield to Maturity: Total Return Perspective
Yield to maturity accounts for every dollar you will earn: all coupon payments plus the difference between purchase price and redemption value at maturity. It is the annualized return assuming you hold the bond until it matures and all payments are reinvested at the same rate.
YTM is the discount rate that equates the present value of all future cash flows to the bond's current price. While the precise calculation involves solving a polynomial equation, an approximation formula provides a close estimate: YTM ≈ [Annual Interest + (Face Value - Price) / Years] / [(Face Value + Price) / 2].
Comparing YTM across bonds with similar credit quality and maturity lets you identify the best value. Two bonds maturing in 10 years might have identical credit ratings, but one offers 4.2% YTM while the other offers 4.6%. The latter delivers more total return per dollar invested, making it the superior choice assuming equal risk.
Bond Pricing Dynamics and Interest Rate Risk
Bond prices and yields move inversely. When interest rates rise, existing bonds paying lower coupons become less attractive, so their prices fall and their yields rise. When rates drop, existing bonds paying higher coupons become more valuable, driving prices up and yields down.
A bond issued at 5% looks great when new bonds yield 3%, so investors bid up its price above par. That same bond looks terrible when new bonds yield 7%, forcing its price below par until its YTM matches the market rate. This interest rate risk never affects your coupon payments, but it creates mark-to-market volatility if you need to sell before maturity.
Duration measures a bond's sensitivity to rate changes. Longer-maturity bonds have higher duration and larger price swings for a given rate move. A 1% rate increase might drop a 2-year bond's price by 2%, but a 30-year bond's price could fall 15%. This calculator helps you evaluate whether a bond's yield compensates for its inherent interest rate risk.
Frequently Asked Questions
What is current yield?
Current yield is the annual interest payment divided by the current market price of the bond. It shows the income return you earn relative to what you paid, ignoring capital gains or losses at maturity.
What is yield to maturity?
Yield to maturity (YTM) is the total return you will earn if you hold the bond until it matures, accounting for all coupon payments plus any gain or loss between purchase price and face value.
Why would I buy a bond below face value?
Bonds trade below par (discount) when market interest rates rise above the bond's coupon rate. You pay less upfront but still receive full face value at maturity, boosting your overall return.
Is YTM the same as coupon rate?
Only if you buy the bond at par (face value). If you buy at a discount, YTM exceeds the coupon rate. If you buy at a premium, YTM falls below the coupon rate.
Are bond yields guaranteed?
YTM is guaranteed only if the issuer does not default and you hold to maturity. Current yield fluctuates with market price. Corporate bonds carry credit risk; U.S. Treasuries are considered risk-free.