Sari Usaha Tani is a cooperative that is engaged in savings and loans that are in Jambi. The current transaction service is still done manually using stationery, calculator and book, it can be seen from the process of savings and loan transactions, installment payments, and data processing members. Where in the manual process is often wrong recording, data archive difficult to find and so forth. Cooperative Sari Usaha Tani requires a system of data processing and storage data storage and good data storage and can reduce the risk of loss or damage to the data. In this thesis, the system development is designed and implemented based on the cooperative needs of displaying data member data, storing transaction records with computerized system, can calculate the amount of payment, and can report the transaction as needed. Based on the test results can be concluded that the system can display member data, can optimize the process of mandatory savings transaction, voluntary savings, loans and installments, and can display and print member reports, deposits, loans and installments. The system automatically displays the balance of mandatory savings and voluntary savings after a member's withdrawal or saving action. Cooperative officers also do not need to calculate the total installment payments manually because the application has calculated the total installment payments.