In the world of small museums, location and audience significantly influence expenses, rendering a one-size-fits-all approach ineffective. However, gaining insight into the various types of expenses museums incur can shed light on common challenges and their causes. The non-profit financial Form 990 categorizes expenses into five areas, providing a framework for understanding spending patterns. Our goal is to simplify the concept of museum spending and guide museums toward prudent budget management by exploring these key expense categories.