Background on Fees

CrossRef is a service run by Publishers International Linking Association, Inc. (PILA), an independent membership
organization comprised of publishers of original scholarly material. Fees are subject to change without notice.

Note: there is no charge to end-user (or publisher) for following a DOI link

*Notes on definition of "Total Publishing Revenue":

• Total publishing revenue includes all publishing revenue from all the divisions of an organization (primary and secondary)
  for all types of activities (advertising, books, journals, databases, article charges, etc). For membership organizations,
  member dues allocated to subscriptions will be included in total publishing revenue.
  
• The member is considered to be the largest legal entity rather than a division.
• Membership fee billing for 2004 and forward will be done on a calendar year basis.
• Members will self-categorize.

General Policies

• Publishers must deposit metadata from all their online journals in the CrossRef system.
• Before retrieving DOIs for references in articles, Members must deposit the article metadata in the CrossRef system.
  In other words, in order to link from an article, the metadata for that article must be deposited in the CrossRef system
  so that others can link to the article.
• It is an obligation of CrossRef membership to link references in scholarly journals using DOIs.
• Organizations with both primary and secondary divisions only need to pay one annual fee based on total publishing revenue.
• Secondary divisions affiliated with primary-division publishers will not be allowed to retrieve DOIs unless the
  primary-division publisher deposits metadata for its journals.
• Members and non-members may "cache" retrieved DOIs (i.e. store them in their local systems).
• Members may appoint Agents to act on their behalf with CrossRef (registering metadata, looking up DOIs).
  An Agent can represent any number of members.