Estimate current yield and yield to maturity (YTM) for a bond given price, coupon, face value and years to maturity.
Current yield = annual coupon payment ÷ current market price.
Yield to maturity (YTM) is approximated with the standard
bond formula
YTM ≈ (C + (F − P)/n) ÷ ((F + P)/2),
where C is the annual coupon, F the face value,
P the price and n the years to maturity. A bond
trading below face (a discount) has YTM above the coupon rate; trading above
face (a premium), YTM falls below the coupon rate.