Fifty-one small businesses located in struggling commercial corridors on the city’s South, Southwest, and West Sides received a combined $5 million in TIF-funded grants Thursday. The program, essentially a rebranding of the existing Small Business Improvement Fund, is specifically designed to leverage local tax increment financing dollars in stagnant neighborhood commercial corridors with the help of local non-profits and chambers of commerce. It’s the latest move by the Emanuel administration to boost small businesses in by making it easier for business owners to apply for financial incentives.