Explaining the Rate Spread on Corporate Bonds (original) (raw)

The purpose of this article is to explain the spread between rates on corporate and government bonds. We show that expected default accounts for a surprisingly small fraction of the premium in corporate rates over treasuries. While state taxes explain a substantial portion of the difference, the remaining portion of the spread is closely related to the factors that we commonly accept as explaining risk premiums for common stocks. Both our time series and cross-sectional tests support the existence of a risk premium on corporate bonds. THE PURPOSE OF THIS ARTICLE is to examine and explain the differences in the rates offered on corporate bonds and those offered on government bonds ~spreads!, and, in particular, to examine whether there is a risk premium in corporate bond spreads and, if so, why it exists. Spreads in rates between corporate and government bonds differ across rating classes and should be positive for each rating class for the following reasons: 1. Expected default loss—some corporate bonds will default and investors require a higher promised payment to compensate for the expected loss from defaults. 2. Tax premium—interest payments on corporate bonds are taxed at the state level whereas interest payments on government bonds are not. 3. Risk premium—The return on corporate bonds is riskier than the return on government bonds, and investors should require a premium for the higher risk. As we will show, this occurs because a large part of the risk on corporate bonds is systematic rather than diversifiable. The only controversial part of the above analyses is the third point. Some authors in their analyses assume that the risk premium is zero in the corporate bond market. 1

Working Paper Series A macro-financial analysis of the corporate bond market

2016

We assess the contribution of economic and nancial factors in the determination of euro area corporate bond spreads over the period 2001-2015. The proposed multi-market, noarbitrage a¢ ne term structure model is based on the methodology proposed by Dewachter, Iania, Lyrio, and Perea (2015). We model jointly the ‘risk-free curve’, measured by overnight index swap (OIS) rates, and the corporate yield curves for two rating classes (A and BBB). The model includes four spanned and six unspanned factors. We nd that, in general, both economic (real activity and in‡ation) and nancial factors (proxying risk aversion, ‡ight to liquidity and general nancial market stress) play a signi cant role in the determination of the spanned factors and hence in the dynamics of the risk-free yield curve and corporate bond spreads. Across the risk-free OIS curve, macroeconomic and nancial factors are each responsible on average for explaining 30 and 65 percent of yield varation, respectively. For Aand...

An Empirical Investigation of New Bond Issue Yield Spreads, Default Risk and Split Ratings

The International Journal of Banking and Finance, 2009

This paper attempts to explain the yield spreads charged to new corporate debt issues by comparing the initial yields of a set of 3,287 securities issued over eleven years in the US. We use the measure of constant maturity Treasury rates on the day of issue against the Moody’s Aaa Corporate Bond index for the week prior to the issue, and the yield on a daily index of long-term Treasury securities on the issue date. The influences of credit ratings and disagreement between rating agencies as reflected in split ratings and the interactions between these characteristics are measured. The contributions of sinking fund provisions, call or refunding status, overseas issue and contractual security arrangements are evaluated separately. The results support the view that the higher yields are observed when ratings of agencies differ and that factors associated with the issues also are significant drivers of the yield difference.

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