Coupon vs. YTM

I have trouble understanding why this is. Can anyone explain? Thanks!

Any difference between the fair value and par value of the security is amortized over its term.

  • When the par value exceeds fair value, the securities trade at a discount. This occurs when the effective interest rate is greater than the stated interest (coupon) rate.
  • When the par value is lower than fair value, the securities trade at a premium. This occurs when the effective interest rate is lower than the stated interest (coupon) rate.

Mostly just need help with the parts comparing the YTM to the coupon.

Ues your time value calcuations.

If the coupon is 5% and the YTM is 4%, then you will have a premium bond… Why? Because the yield is only 4 but you’re getting a higher coupon.

If the coupon is 5% and the YTM is 6%, then you have a discount bond… Why? Because you’re only getting 5% coupons when the yield is 6%.

Now punch that into your calculator

PMT = 50, FV = 1000, N=20, I/Y = 4 , solve for PV and you get $1135, a premium bond.