Differentiated Annuities in a Pooling Equilibrium

Sheshinski, Eytan (2007): Differentiated Annuities in a Pooling Equilibrium.

Abstract

Regular annuities provide payment for the duration of an owner's life-time. Period-Certain annuities provide additional payment after death to adesignated beneficiary provided the insured dies within a certain period after annuitization. It has been argued that the bequest option offered by the latter is dominated by life insurance which provides non-random bequests. This is correct if competitive annuity suppliers have full information about individual longevities and price annuities accordingly. In contrast, this paper shows that when individual longevities are private information, a competitive pooling equi-librium which offers annuities at common prices to all individuals may have positive amounts of both types of annuities in addition to life insurance. In this equilibrium, individuals self-select the types of annuities that they purchase according to their longevity prospects. The break-even price of each type of annuity reflects the average longevity of its buyers plus expected lump-sum payouts in the case of period-certain annuities. The broad conclusion that emerges from this paper is that adverse-selection due to asymmetric information is reflected not only in the amounts of insurance purchased but,importantly, also in the choice of insurance products suitable for different individual characteristics. This conclusion is supported by recent empirical work about the UK annuity market (Finkelstein and Poterba (2004)).

• Item Type: MPRA Paper
• Language: English
• Keywords: Regular Annuities, Full Information Equilibrium, Period- Certain Annuities, Pooling Equilibrium
• Subjects: H - Public Economics > H0 - General

References

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[5] Finkelstein, A. and J. Poterba (2002) "Selection E¤ects in the United Kingdom Individual Annuity Market", Economic Journal, 112, 28-50.

[6] Finkelstein, A. and J. Poterba (2004) "Adverse Selection in Insurance Markets: Policyholder Evidence from the UK Annuity Market", Journal of Political Economy, 112, 183-208.