Extensive research by demographers and economists has shown that longevity differs across socio-economic status (SES), with low-educated or low-income people living, on average, shorter lives than their better-endowed and wealthier peers. Therefore, a pension system with a unique retirement age is a priori problematic. The usual policy recommendation to address this problem is to differentiate the retirement age by SES. This paper explores the relative merits of partial de-annuitization of public pensions as a way of addressing the (imperfectly assessed) inequality of longevity.

We analyse annuitization rates by policyholders with individual deferred annuities in Korea to assess the impact of different tax policies on payout decisions between 2008 and 2011. Under the Korean tax system, two types of individual deferred annuities were sold: qualified (taxed for lump sums) and non-qualified (tax free for lump sums). Our results show that policyholders with qualified contracts are more likely to select a life annuity option than a lump-sum distribution, compared to policyholders of non-qualified contracts. This suggests that policyholders are more likely to use non-qualified contracts as savings vehicles than as longevity insurance.