TY - JOUR T1 - Approximate Formulae for Pricing Zero-Coupon Bonds and Their Asymptotic Analysis JO - International Journal of Numerical Analysis and Modeling VL - 2 SP - 274 EP - 283 PY - 2009 DA - 2009/06 SN - 6 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/767.html KW - One factor interest rate model, Cox-Ingersoll-Ross model, bond price, analytical approximation formula, experimental order of convergence. AB -

We analyze analytic approximation formulae for pricing zero-coupon bonds in the case when the short-term interest rate is driven by a one-factor mean-reverting process with a volatility nonlinearly depending on the interest rate itself. We derive the order of accuracy of the analytical approximation due to Choi and Wirjanto. We furthermore give an explicit formula for a higher order approximation and we test both approximations numerically for a class of one-factor interest rate models.