Equity related life insurance is a financial guarantee from endowment of life, which provides a Guarantee of Benefits and investments. Determine the price of premium using the constant force assumption, which states that the life acceleration of the person who approves x years is constant. Premium reserves are the money in the company for the period of coverage. The purpose of this research is to model the premium reserve value, which in this case is used endowment life insurance premiums and the single premium used is equity-related life insurance. One method that can be used to calculate reserves is the Fackler method. The Fackler method is based on the retrospective reserve principle. The final reserve value is determined by using the year-end backup Fackler method. The results of the calculation of premium reserves using the Fackler method, showing several patterns, the longer, the premium period, the greater the reserves, which must be prepared by the insurance company