• 한국사회복지학
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• 제41권
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• pp.43-67
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• 2000

The main source in financing the National Pension benefits is the contribution raised from the insured's earnings. So, Most of the insured take a great interest in the questions of what return on the payment of contribution National Pension benefits provide and whether there be the difference in return according to earnings level. The Purpose of this study is to assess money's worth of National Pension and to answer the above questions. There are two basic types of money worth analysis, empirical and hopothetical. This study basically belongs to the former in terms that it is based on actual earnings and insured term. For performing money's worth analysis, four different measures which are referred as the "break-even period", the "benefit/tax ratio", the "net lifetime transfer", the "internal rate of return" are used and they all involve the way in which the relationship between the present value of contributions and the present values of benefit is present. The results which evaluate average money's worth of accrued rights before 1999 are le as follows. Break-even period is about 43 months, benefit/tax ratio being 4.9, net lifetime transfers being about 37 mil1ion won, internal rate of return being 33.2%. This verifies that money' worth of National Pension is much higher than actuarially fair. In the mean while, money' worth is proved to be very different according to earnings level. The progressivity relationship between earnings level and rate of return is found in all measures but net lifetime transfer.

• 경영과학
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• 제27권1호
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• pp.45-60
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• 2010

This study evaluates life annuity plans based on two different types of measures : financial benefit and utility on consumption. The financial benefit is measured by Money's Worth (MW) ratio and return on annuity. For the measure of utility, an optimization problem is formulated with the objective of maximizing utility on consumption. To solve the optimization model, we use Dynamic Programming (DP) technique. The both types of measures are applied to cases of Korean pre-retirees at age 40 with different accumulation years of annuity (i.e. level of annuity asset at the age of retirement) and different timings of annuitization. Our results generally indicate that the utility based optimization model is superior to the financial measures in terms of providing a better evaluation of an annuity plan due to its capability to consider an individual's financial situation during his/her retirement period. Also, they suggest that the level of annuity asset is an important factor when an individual determines the optimal annuitization timing.

• 한국산업경영시스템학회:학술대회논문집
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• 한국산업경영시스템학회 2002년도 춘계학술대회
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• pp.9-18
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• 2002

A capital investment problem is essentially one of determining whether the anticipated cash Inflows from a proposed project are sufficiently attractive to invest funds in the project. The net present value(NPV) criterion and internal rate of return(IRR) criterion are widely used as means of making investment decisions. A positive NPV means the equivalent worth of the inflows is greater than the equivalent worth of outflows, so, the project makes profit. Business people are familiar with rates of return because they all borrow money to finance ventures, even If the money they borrow is their own. Thus they are apt to use the IRR in preference to the NPV. The IRR can be defined as the discount rate that causes the net present value of a cash flow to equal zero. Why the project are accepted if the project's IRR is greater than the investor's minimum attractive rate of return. Against the NPV, the definition cannot distinctly explain the concept of the IRR as decision criterion. We present a new definition of the IRR as the ratio of profit on the invested capital.

• 산업경영시스템학회지
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• 제25권5호
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• pp.9-14
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• 2002

A capital investment problem is essentially one of determining whether the anticipated cash inflows from a proposed project are sufficiently attractive to invest funds in the project. The net present value(NPV) criterion and internal rate of return(IRR) criterion are widely used as means of making investment decisions. A positive NPV means the equivalent worth of the inflows is greater than the equivalent worth of outflows, so, the project makes profit. Business people are familiar with rates of return because they all borrow money to finance ventures, even if the money they borrow is their own. Thus they are apt to use the IRR in preference to the NPV. The IRR can be defined as the discount rate that causes the net present value of a cash flow to equal zero. Why the project are accepted if the project's IRR is greater than the investor's minimum attractive rate of return\ulcorner Against the NPV, the definition cannot distinctly explain the concept of the IRR as decision criterion. We present a new definition of the IRR as the ratio of profit on the invested capital.

• 응용통계연구
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• 제28권4호
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• pp.603-620
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• 2015

국민연금은 각종 사회적 위험으로부터 국민을 보호하고 빈곤을 해소하는 대표적인 사회보장제도로, 노령인구의 삶의 질에 큰 영향을 미치고 있다. 그러나 급속도로 진행되고 있는 고령화와 출산율의 감소는 국민연금의 지속가능성을 위협하고 있다. 국민연금의 지속가능성을 점검하고 유지하기 위해 국민연금연구원에서는 5년마다 재정추계를 실시하고 있으며, 정부에서는 이를 바탕으로 국민연금의 지속가능성을 높이기 위해 수급액을 낮추고 있다. 하지만 OECD 국가 중 노인 빈곤율이 가장 높다는 현실을 고려할 때, 단순히 수급액을 낮추는 현재의 국민연금 제도 변화는 국민연금의 노후소득보장 기능을 훼손할 우려가 높다. 본 논문에서는 먼저 국민연금 재정추계에 대한 방법론을 인구, 가입자, 수급자 추계의 측면에서 논의하고 적립금 추계와 재정고갈연도를 점검할 것이다. 그리고 인구변수, 제도변수, 그리고 경제변수가 국민연금 적립금과 재정고갈연도에 미치는 영향을 파악하기 위해 민감도 분석을 할 것이며, 국민연금의 수급부담구조를 분석하여 세대내, 세대간, 소득계층간 공정성을 평가하도록 한다. 마지막으로 국민연금의 지속가능성을 연금 기여율과 수급률(소득대체율)의 관점에서 점검하며, 본 논문에서 새롭게 정의한 부양비(modied dependency ratio)지수를 통해, 부과식 제도의 도입이 없이 단순하게 기여율과 수급률의 조정으로는 국민연금의 개혁이 불가능하다는 것을 보여줄 것이다.