The Bank of America Institute released its findings from its first Small Business Checkpoint, a new publication which aims to provide a holistic and real-time estimate of Small Business financial activity, spending and financial well-being, leveraging the breadth and depth of Bank of America proprietary data from its approximately three million small business households. Highlights of the publication: Small Business aggregate credit and debit card spending was up 16% year-over-year in April; within this, April growth in credit card spend (20%) outpaced growth in debit card spend (12%) Total payments across all types up 14% per client year-over-year, demonstrating both spending growth and the impact of…