Islamic fnance is a subject that is no longer reserved for Muslims around the world, and the usage of Islamic fnance is now widely accepted. In Indonesia, to meet with the increasing demand, OJK launched three indices dedicated to sharia-compliant stocks. In doing so, the organization has come up with a list of criteria that a frm needs to meet to be classifed as sharia-compliant. One of which is that a sharia compliant frm must maintain a debt level below 45%. Sharia-compliant frms are then expected to behave differently from sharia non-compliant frms that do not have this restriction placed upon them in terms of capital structure. This study aims to examine and compare the determinants of capital structure among sharia-compliant and non-compliant frms in Indonesia, using a cross-sectional data of all frms in Indonesia that are listed in 2017. We used four independent variables to predict capital structure: proftability, frm size, tangibility, and business risk. The result is there are variables that do affect sharia compliant and non-compliant frms differently, with some variables being signifcant for sharia non-compliant frms but not signifcant for compliant frms. For example, the variable proftability was found to be signifcant for sharia non-compliant frms, but not for sharia compliant frms.