The document describes how a university library implemented activity-based costing (ABC) to make necessary budget cuts while refocusing services. The library was asked to reduce its budget by 5% over 3 years. It analyzed costs using ABC and identified opportunities to reduce operating costs and materials budgets. This data-driven approach allowed strategic decisions to be made, such as cancelling underutilized databases and microform subscriptions, that minimized impacts on collections and services. Expert advice from campus budget officers supported the library's ABC methodology.