This study takes Indonesian listed companies as the research object and explores the impact of shariah practices on the debt ratio of Indonesian listed companies from. The empirical result shows that shariah firms tend to use debt financing than non-shariah firms. Culture does have re-strictions on shariah firms in Indonesia. This study further adds family business variable. The empirical result shows that shariah firms, no matter is family or non-family business tend to use debt financing, and there is only a minor difference between them. This result confirms that shariah practices have a significant impact on the debt level of listed firms in Indonesia.