  Insurance companies often include very long-term guarantees in participating
life insurance products, which can turn out to be very valuable. Under a
guaranteed annuity options (G.A.O), the insurer guarantees to convert a
policyholder's accumulated funds to a life annuity at a fixed rated when the
policy matures. Both financial and actuarial approaches have been used to
valuate of such options. In the present work, we present an indifference
valuation model for the guaranteed annuity option. We are interested in the
additional lump sum that the policyholder is willing to pay in order to have
the option to convert the accumulated funds into a lifelong annuity at a
guaranteed rate.
