Times are tough for many owners of small and medium-sized enterprises (SMEs) at the moment, so anything that helps smooth or improve their working lives is usually very welcome. Perhaps that’s why Chase and MasterCard both independently decided to announce enhancements to their small business credit cards in July.Small business credit cards get betterChase unveiled its enhancements to its Ink Plus(SM) from Chase credit card on July 31. These lead with a new rewards program (check the website for details), which promises that points won’t expire, and offers:Five points a dollar (capped at $ 50,000 a year) on spending at [...]