YTM is the single discount rate that makes the present value of a bond's future coupons and principal equal to its current market price. It is the bond market's standard measure of return and moves inversely to price.
Formula
Price = Σ [Coupon ÷ (1+YTM)ᵗ] + [Face Value ÷ (1+YTM)ⁿ]
Example
A bond trading below face value has a YTM above its coupon rate, because the investor also gains from the price rising to par at maturity.
Relevant NISM series
See Yield to Maturity (YTM) in exam questions
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