Mahkota Java Coffee is a company that produces coffee beans. Associative descriptive research method is used in this study, with the aim of knowing the effect of variable promotion and quality of service on purchasing decisions at Mahkota Java Coffee by using multiple linear regression analysis techniques. The respondents were 96 Mahkota Java Coffee consumers who were selected using the unknown population technique. The analysis technique for the validity and reliability tests was used in this study, multiple regression analysis, and hypothesis testing using Microsoft Excel. Research shows that there is a partial and simultaneous influence between promotion and quality of service on coffee purchasing decisions at Mahkota Java Coffee Garut.