SUMMARY
The research was made with the aim of examining the impact of Quick Ratio, Net Interest Margin, Loan to Deposit Ratio and Capital Adequacy Ratio on the Profitability of service companies listed on IDX. The sample was obtained through a purposeful sampling conducted by the Internet media www.idx.co.id. The total number of samples is 28, and the population studied is 43 companies. Stated that IDX’s research results on the quick ratio of service companies did not have a positive impact, and did not significantly improve profitability. The banking sub-sector service company at IDX on the Net Interest Margin variable also has a positive and significant effect on profitability. The Loan to Deposit Ratio variable also has a positive and significant effect on profitability in the banking sub-sector service companies at IDX. Banking sub-sector service companies on the IDX Capital Adequacy Ratio also have a positive and insignificant effect on profitability.