When we invest in a bond, we usually receive fixed interest payments every year. Along with that, we also get the face value of the bond back at maturity.

But the important question is: what is the actual return we will earn if we buy the bond today and hold it till maturity?

This return is known as Yield to Maturity, or YTM.

What is Yield to Maturity?

Yield to Maturity is the total annual return an investor expects to earn from a bond if the bond is held until maturity.

It considers three things:

The current market price of the bond
The annual coupon or interest payment
The face value received at maturity

So, YTM is not just the coupon rate. It is a broader measure of return.

Simple Example

Suppose a bond has the following details:

Face Value: ₹1,000
Coupon Rate: 8 percent
Annual Coupon: ₹80
Current Market Price: ₹950
Maturity: 5 years

Here, the bond is available at ₹950, but at maturity, the investor will receive ₹1,000.

So, the investor earns ₹80 every year as coupon income and also gets an extra ₹50 gain because the bond was purchased below face value.

This means the actual return will be higher than 8 percent.

Using the approximate YTM formula:

YTM = Annual Coupon + Annual Capital Gain / Average of Current Price and Face Value

Annual Capital Gain = ₹1,000 – ₹950 / 5 = ₹10

Average Price = ₹1,000 + ₹950 / 2 = ₹975

YTM = ₹80 + ₹10 / ₹975
YTM = ₹90 / ₹975
YTM = 9.23 percent approx.

So, the Yield to Maturity is around 9.23 percent.

Real Life Context

Assume you are comparing two investment options.

Bond A gives 8 percent coupon and is trading at face value of ₹1,000.
Bond B gives 8 percent coupon but is available at ₹950.

At first, both bonds look similar because both have the same coupon rate. But Bond B is more attractive because you are buying it at a discount and still receiving ₹1,000 at maturity.

That extra gain increases the overall return. This is why investors look at YTM instead of only looking at the coupon rate.

Why YTM is Important

YTM helps investors compare bonds with different prices, coupons and maturities.

A bond trading at a discount usually has a YTM higher than its coupon rate.

A bond trading at a premium usually has a YTM lower than its coupon rate.

A bond trading at par usually has a YTM equal to its coupon rate.

Key Point

Coupon rate tells us how much interest the bond pays on its face value.

YTM tells us the actual return we may earn if we buy the bond at the current market price and hold it till maturity.

Final Perspective

Yield to Maturity gives a clearer picture of bond returns. It includes coupon income as well as gain or loss from buying the bond above or below face value.

For investors and finance students, YTM is useful because it shows the true expected return from a bond, not just the stated interest rate.