不同財源融通方式的退休年金對經濟成長與社會福利的影響

ECONOMIC GROWTH AND SOCIAL WELFARE EFFECTS OF DIFFERENT WAYS OF FINANCING A RETIREMENT PENSION

金志婷(Chi-Ting Chin)

《經濟論文》 48卷2期 (2020/06) Pp. 261-307

摘要

本文分析退休年金對經濟成長與社會福利的影響效果，並比較保費融通與稅賦融通的方式發放退休年金之相對優劣。經由本文的分析，得到以下結論：（1）無論保費融通或稅賦融通的方式發放，退休年金皆會挫低經濟成長，且稅賦融通的方式挫低經濟成長的程度將超過保費融通的方式；（2）退休年金的發放將減低年輕人的福利、提高年長者的福利，保費融通所減低年輕人的福利低於所提升年長者的福利，税賦融通則可能減低年輕人較大幅度的福利，相對於保費融通的方式，税賦融通的形式發放對各世代民眾的福利皆有較為不利的影響；（3）本文理論推估模型存在部分研究限制，導致各年齡層的就業人口與當期應納稅額等理論估計值與實際數據有些許差距，但因所有年齡層都是作跨期最適選擇，經折現加總後各年齡層的估計誤差將不大，使得退休年金對經濟成長與各世代福利的影響效果也不會有太大的估計誤差。

關鍵字

退休年金 ； 保費融通 ； 稅賦融通 ； 經濟成長 ； 社會福利

並列摘要

Based on the growth and welfare effects of a retirement pension, this paper analyzes the pros and cons (by the lifetime risk) between premium financing or tax financing. Several main findings are concluded as follows. First, both premium financing and tax financing reduce the balanced growth rate, and tax financing reduces economic growth rate more than does premium financing. Second, a retirement pension reduces the welfare of the younger and raises that of the older. To finance from premiums, the welfare loss of the younger is lower than the welfare gains of the older; but to finance from taxation, the welfare loss of the younger may be higher than the welfare gains of the older. Relative to premium financing, tax financing has larger bad effect on welfare of all generations. Finally, there are some research limitations in the theoretical estimation model, which leads to some estimation errors between the theoretical estimation and the actual data on the employed population and the tax payable in each age group. Since everyone determines the resource allocation by intertemporal optimization, the errors in estimating the growth and welfare effects of retirement pension will not be too large.

並列關鍵字

Retirement pension ； Premium financing ； Tax financing ； Endogenous growth ； Social welfare

參考文獻

李易駿（2005），「台灣地區退休年金規劃之探討—新社會風險觀點的初步分析」，《人文及社會科學集刊》，17(4), 715–760。[Lee, Y.- J. (2005), “Taiwan’s National Pension Planning: An Analysis from New Social Risks Perspective,” Journal of Social Sciences and Philosophy, 17(4), 715–760.]

金志婷（2018），「疊代模型中的最適智慧財產權保護」，《經濟論文》，46(1), 33–67。[Chin, C.-T. (2018), “The Optimal Degree of Intellectual Property Rights Protection in an Overlapping-Generations Model,” Academia Economic Papers, 46(1), 33–67.]

陳虹如與林富玲（2007），「預期壽命延長與社會安全制度對長期所得水準的影響」，《經濟論文叢刊》，35(1), 1–31。[Chen, H.-J. and F.-L. Lin (2007), “Life Expectancy, Social Security and Long-Run Economic Performance,” Taiwan Economic Review, 35(1), 1–31.]

陳冠彰（2015），「企業高薪低報對台灣勞保退休年金及經濟成長影響之分析」，《經濟論文》，43(3), 345–379。[Chen, G.-J. (2015), “An Investigation of the Influence of Enterprises Underreporting Wage Upon Labor Insurance Retirement Annuity and Economic Growth,” Academia Economic Papers, 43(3), 345–379.]

楊靜利（2000），「公共年金的財務處理方式」，《國家科學委員會研究彙刊—人文暨社會科學》，10(3), 316–329。[Yang, C.-L. (2000), “Varied Financial Arrangements of Public Pension,” Proceedings of the National Science Council: Part C, Humanities and Social, 10(3), 316–329.]