KPRI (Cooperative Republic of Indonesia) Dwija Raharja is Cooperative that has business of credit that provide loans or credits. Loan System process in KPRI Dwija Raharja is started from the prospective creditor comes to cooperative for applying a loan, then the employee records creditorinto recommendation member form finally the form are given chairman cooperative. The presence ofcooperative chairman is only two days (Saturday and Sunday). Therefore loan application in the cooperative piles up and can not be immediately determined for feasibility of a loan.Moreover the problem that also occurs in cooperative leadership is the assessment to determine the feasibility of loans is subjective. that only give a decision regardless of the percentagevalue of loan eligibility. In order to solve this problem, DSS is built to help leaders in the assessment process and provide precise calculations to assess the feasibility of a loan. The method of DSS is fuzzylogic, because subjective or linear assessment can be modeled and calculated precisely.