The current development makes the competition in financial institutions has increased. This is experienced by all financial institutions including BPRS Bangun Drajat Warga in Yogyakarta. In handling the competition, BPRS Bangun Drajat Warga has right ways to attract its customers by maintaining the stability of asset growth each year. The asset growth cannot be separated from some products owned by BPRS Bangun Drajat Warga. One of the contributing products in the asset growth is working capital financing. This financing has some contracts namely mudharabah contract and musyarakah contract. This research aims to find out the effects resulted by the working capital financing on the asset growth in BPRS Bangun Drajat Warga. The data of the research were from secondary data per month obtained directly from the bank in the period of 2013-2016. Descriptive analysis method, multiple analysis method, and classical assumption test method were carried out in this research to derive a conclusion of the research. The findings of the research indicate that working capital financing with mudharabah contract and musyarakah contract has no effects on the assets growth