Establishes Main Street Economic Growth Program to encourage business development in certain small municipalities.

This bill creates the Main Street Economic Growth Program to provide financial support to small towns in New Jersey. It directly affects municipalities with under 11,000 residents (that are county seats, contain federal opportunity zones, or are over 70% developed) and businesses operating in their designated "Main Street areas." The program will offer loans, loan guarantees, tax credits, and technical assistance to local businesses within these designated zones to encourage growth. The New Jersey Economic Development Authority will administer the program, with towns needing to formally designate Main Street areas through ordinances before businesses can access the support.