The current yield only therefore refers to the yield of the bond at the current moment. It does not reflect the total return over the life of the bond. In particular, it takes no account of reinvestment risk (the uncertainty about the rate at which future cashflows can be reinvested) or the fact that bonds usually mature at par value, which can be an important component of a bond's return.
Relationship between yield to maturity and coupon rate.
- discount: YTM > current yield > coupon yield
- a premium: coupon yield > current yield > YTM
- par: YTM = current yield = coupon yield.
Current Yield = Total Yield - Capital Gains Yield
The current yield is the annual payment divided by the price. Algebraically expressed as Y = R/P, where Y is yield, R is the annual payment, and P represents price. This creation shows the fine line between high and low returns over more than one period. A high yield will produce a relative payment and a low yield will do the same. When the yields of several periods are compared a higher yield will show a higher payment with less risk associated. This equates to investors expecting a higher yield over a length of investing. The possibility of market risks are ignored.