This research was conducted to test the influence of variable Return On Asset (ROA), operating costs operating income (BOPO), and Financing to Deposit Ratio (FDR) against the level ofsharing Mudharabah deposits. System for the results is the system where the ill-fated agreementor bond together in performing business activities for example deposits Mudharabah onCooperative BMT Al-Ikhlash East of Lumajang in 2010 – 2013. As for the variables examined isROA (X1), BOPO (X2), FDR (X3) against the level of sharing Mudharabah deposits. In thisresearch the secondary method used in Cooperative BMT Al-Ikhlash East of Lumajang. Thisanalysis data processing techniques include: Classic assumption test, test multiple regressionanalysis, hypothesis testing with partial tests (test t), simultaneous testing (test F). The testresults showed that partially Return On Asset and Financing To Deposit effect significantly tolevels of Mudharabah deposits for the results. Meanwhile, operating expenses and operatingincome do not affect significantly the level of terhadp for results of Mudharabah deposits. Thetest results indicate that the simultaneous Return On assets, Financing To Deposit andoperating expenses and operating income results for the level of influence on Mudharabahdeposits.