Copyright held by Emerald Group Publishing Limited.Purpose – The purpose of this paper is to examine interlibrary loan requests for open access materials submitted during fiscal years 2010 and 2011 and to determine the impact of open access materials upon fill rate for interlibrary borrowing requests. Design/methodology/approach – Borrowing requests for open access materials were quantitatively analysed and compared to total borrowing requests. Findings – During the period studied, borrowing requests for open access materials increased while overall requests held steady. As the number of requests filled with open access documents continues to rise, IUPUI University Library is able to provide a service to users and cost savings for the...