作为养老保障制度的第三支柱，延税型商业养老保险应被称为“个人养老账户”（IPA）。在对商业养老保险进行顶层设计时，应采取产品和账户双重管理的方式，实现保险与投资的双重功能，制订EET（税前缴费）与TEE（税后缴费）的双向政策，实行试点与全面铺开的“两阶段推进”战略。个税优惠政策有利于促进个人养老账户制度的建立和普及。运用税收优惠政策撬动商业养老保险制度的发展可以设定三个目标：近期：推进和普及EET型个人账户，着手设计实施TEE型制度；中期：适时调整个税起征点，扩大涉税福利项目覆盖面，利用个税杠杆提高建立个人养老账户的参与率；远期：适当降低基本养老保险的缴费率，提高企业补充养老保险和商业养老保险的缴费率。国际比较的结果表明：个人养老账户应在家庭财富净值中占有重要的地位，成为保障国民福祉的社会基础设施，起到资本市场“压舱石”的作用。

As the third pillar of oldage security system, taxdeferred commercial pension insurance should be referred to in China as “Individual Pension Account”(IPA), its toplevel design should adopt a dualmanagement method of production and account in order to achieve both insurance and investment functionsThis paper suggests a twoway taxation policy of EET type and meanwhile TEE, the implementation of IPAs should be divided into two stages of pilot and fullscaled launch Preferential tax policy is beneficial to promote the establishment and popularization of IPAThere are three goals using tax leverage to advance the development of IPAs: the shortterm target is to popularize EET type IPAs and commence the implementation of TEE system; the midterm one is to lower the tax deductible threshold timely and expand the coverage of taxinvolved welfare programs so as to increase participation rate of IPA through the use of tax leverage; and the longterm one is to reduce the contribution rate of basic oldage insurance while raising the contribution rate of enterprise supplementary pension insurance as well as commercial pension insuranceAccording to the results of international comparison, IPA plays a vital role in net household wealth, so it should be the social infrastructure of national welfare and the “ballast” of capital markets.