The objective of this study was to identify whether the internal microgrant program at the University of Houston Libraries provided a suitable return on investment. This study identified three criteria for assessing return on investment from library microgrants: engagement, continuation, and professional impact. The results indicated that compared to costs for other library outreach programs and events, the amount for the microgrant program is not excessive. However, it resulted in significant participation and impact, with many continuing positive outcomes. Internal microgrant programs offered a positive return on investment for the University of Houston Libraries during the period reviewed. This study will help with the decision-making process of other libraries looking to fund similar programs. It also has implications for assessment in libraries with similar existing programs.