In an IEC/R, the associated costs of individual IEC/R classifiers are covered by their respective sponsoring organisation. The IEC/R requesting host country or the organisation however, determines and manages observers invited.

IEC/R 测评过程中，IEC/R 专家组成员的费用将由各自的主管机构负责。受邀观摩员则由 IEC/R 申请国或机构来决定并管理。