Pension fund is an alternative option in providing old-age insurance for employees who do not work anymore due to the expired working age limit, by way of planning periodic payments called pension benefits. One of the factors affecting the pension fund is the amount of basic salary of the last month and years of service. This study discusses the computation of pension fund using projected unit credit and pay-as-you-go method on the data of Insurance Company "ABC". The method used herein is to calculate the retirement benefits earned by participants after entering the retirement age, and the amount of the normal contribution to be paid by the participants of the pension plan and the actuarial liability to be paid by the company. The results show that the calculation of pension benefits and normal contributions using the projected unit credit method is more profitable for the employees because of the same fee as the pay-as-you-go method, but the pension benefits received by the retired participants are greater.

Keywords: Pension funds, retirement benefits, normal contributions, actuarial liabilities, projected unit credit, pay-as-you-go.