Yield to Call
Yield to Call (YTC) is the annualised rate of return an investor earns on a callable bond if the issuer exercises the call option on a specified call date before the bond's final maturity, calculated by discounting all expected cash flows (coupons plus the call price) up to the call date to equal the bond's current market price.
A callable bond gives the issuer the right — but not the obligation — to redeem the bond at a pre-specified call price (often at par or a slight premium) on or after a defined call date. This embedded option benefits the issuer: if interest rates fall after issuance, the company can call the expensive bond and refinance at lower prevailing rates. For the investor, this call feature introduces reinvestment risk — if the bond is called, the investor receives cash at a time when reinvestment opportunities may offer lower yields than the original bond.
The YTC calculation follows the same discounted cash flow logic as Yield to Maturity (YTM), but the terminal cash flow is the call price rather than face value, and the time horizon is the period to the call date rather than full maturity. Mathematically: Current Price = Sum of [Coupon / (1+YTC)^t] for t=1 to call period, plus [Call Price / (1+YTC)^call period]. Solving this equation for YTC requires iterative calculation or a financial calculator, analogous to solving for YTM.
In the Indian corporate bond market, callable bonds were issued by banks, NBFCs, and large corporations as part of their liability management. Tier-1 and Tier-2 capital bonds issued by Indian banks frequently carry call options at the 5-year mark, which is a common global practice in bank capital instruments. The RBI framework for Additional Tier-1 (AT1) bonds — the controversial Basel III capital instruments — includes provisions for calls at the discretion of the issuer, and the SEBI YES Bank AT1 bond episode of 2020 illustrated the risks when investors did not fully account for the issuer discretion embedded in these instruments.
For investors evaluating callable bonds, the relevant comparison is Yield to Worst (YTW) — the lower of YTC and YTM — which represents the minimum yield the investor can expect assuming the issuer acts in the most unfavourable manner. When the bond is trading above its call price and yields have fallen since issuance, YTC will typically be lower than YTM, and YTW equals YTC. In such cases, quoting only the YTM overstates the investor's actual expected return if the call is exercised.
In the Indian secondary bond market, YTC analysis is particularly relevant for bonds issued by PSU entities and banks where call exercise at the first call date has historically been a strong expectation. Market participants generally price callable PSU bonds on a YTC basis when the call date is within five years, treating YTM as a theoretical maximum yield rather than the expected return. When an issuer misses a call date — as occurred in some global cases — bond prices typically drop sharply as the market re-prices from YTC to YTM basis, illustrating the pricing sensitivity to call assumptions.