Increase Small Business Utilization Act of 2023

This bill requires federal agencies to set aside portions of multiple award contracts for small business concerns - including specific subcategories like women-owned or veteran-owned businesses - unless the agency cannot obtain two competitive offers that meet market price, quality, and delivery standards. It directly affects federal agencies purchasing goods or services through multiple award contracts, expanding existing small business set-aside rules. The key mechanism mandates that agencies reserve contract awards for small businesses in full and open multiple award procurements, while excluding micro-purchases and certain procurement categories like those under FAR subpart 8.4. The bill aims to increase small business participation in federal contracting by strengthening the "Rule of Two" requirement.