On December 27, 2015, the IMSLP moved to a subscription-based model, where users are expected to pay to avoid a waiting period on some of the files available on the site, and to access certain newly uploaded files. Users who have not paid are subject to a 15-second waiting period on certain files (excluding Creative Commons-licensed files that constitute a majority of the site's files), are required to wait up to two days to access newly uploaded files, and are shown advertising.