1) According to a February 2012 market analysis by Banking Research Associates, Square's target market consists of 5.7 million cash-based small businesses in the United States. 2) Construction businesses make up 47% of these small businesses, while retail trade accounts for 12% and professional services accounts for 13%. 3) The total cash-based revenue generated by these 5.7 million small businesses is $232.8 billion annually, with construction, retail trade, and professional services accounting for the majority of this revenue.