Answer: The default risk premium on corporate bonds is 1.55%.
The nominal rate of return on bonds can be expressed as a sum of the premiums on the many types risks associated with corporate bonds.
The nominal interest rate (r) formula is:
[tex]mathbf{r = r^{*}+IP+DRP+MRP+LP}[/tex]
where
r is the nominal rate of interest
r* is the real interest rate
IP is the average inflation risk premium
DRP is default risk premium
MRP is the maturity risk premium and
LP is liquidity premium
Substituting the values we get
[tex]7.75 = 2.3+2.5+DRP+0.1(5-1)+1[/tex]
[tex]7.75 = 6.2+DRP[/tex]
[tex]7.75 -6.2 = DRP[/tex]
[tex]\mathbf{DRP = 1.55}[/tex]