Virtually any business or non-profit can use KashBox to process credit cards. It's ideal for doctorâ??s offices, dentists, churches, service providers, retail stores, wholesale businesses, and almost anyone currently accepting credit cards. Thereâ??s no cost for the software and no cost to apply for a merchant account with Mercury Payment Systems. It works best with a high-speed connection, but if you can connect to the internet, you can use KashBox!