A Study on the Relationship between the Deductible and the Insurance Cost- The Case of the Taiwan Power Company’s Engineering Insurance Policy

[[abstract]]本研究主要在探討當保單訂定不同之自負額時，被保險人之保險成本與保單自負額間，將產生何種損益之關聯性變化。本文除概述自負額在保險實務上之運用情況及保險成本之結構外，並以台電公司之工程綜合保險預約保險單為例，運用保險精算上之損失削減比例（LER），試圖從其歷年之損失記錄中，探討保險單在不同之自負額下，被保險人可節省之保險成本與自留損失間之損益關係。 從本研究所設定的不同自負額試算結果得知，當保險費率偏低時，保單設定之自負額愈高，其損益之表現愈差，兩者呈負向關係；又當保險費率偏高時，保單設定之自負額愈高，其損益之表現則愈佳，兩者呈正向關係。 由實證分析中可推論得知，保險費率水準之高低，將影響其間之盈虧變化。本研究建議被保險人欲節省財務上之支出，除加強保險標的之損害防阻措施以減少損失發生外，風險管理對策之選擇更應依時空環境之不同，靈活運用調整，方能獲取自身最大之財務利益。[[abstract]]This study is focused on researching the topic when the different deductibles are made, what relative changes of cost savings may occur between the insurance premium and the deductible for the insured. This study describes how deductible used in practice and the structure for insurance cost. In addition, we take the Taiwan Power Company’s engineering insurance open policy for example, by the application of actuarial method - Loss Elimination Ratio (LER); we try to find out, from the loss records for the past years, the relationship between the insurance cost and the loss of retention under the different level of deductible. The study concludes that the lower rate and higher deductible get less cost savings, which has significant negative impact. On the other hand, the higher rate and higher estimated deductible get better benefit. The status has significant positive impact. This study suggests that if the company want to save the premium cost besides enhancing the loss prevent and loss control, it should take more active risk management to get the maximum financial benefit itself