The credit card industry is made up of two business segments: the issuance of credit cards to consumers and the acquisition of merchants into the credit card payment scheme. Accepting credit card payments is an important business decision that involves cost, benefits and risk considerations. The paper discusses the merchants' personal and business characteristics and the perceptions of merchants towards the credit card payment system, both of which contribute significantly to merchants' acceptance of credit card payments. It is found that perceptions related to the social influence and performance expectancy constructs of the Unified Theory of Acceptance and Use of Technology play the most important role in a merchant's decision.