2018 年，毒品和犯罪问题办公室 95%的资源来自自愿捐款，近年来，指定用途的捐款越来越多，而且附带特定条件，捐助方设定报告要求以及逐阶段分期付款。毒品和犯罪问题办公室的这一复杂性反映在核准项目修订所需的时间上，这是因为每个项目的赠款数目都很大，而且经常需要发放或订正项目拨款以及对业务需求作其他变动(2018 年对 1 144 笔赠款和 330 个执行中项目进行了 9 514 次拨款订正，批准项目订正平均所需时间为 60 天)，这些订正对项目的规划、执行、监测和报告有影响。
In 2018, 95 per cent of UNODC resources were voluntary contributions, and in recent years there has been an increasing number of contributions with earmarked requirements, with specific conditions, donor-driven reporting requirements and partitioned instalments. That complexity in UNODC is reflected in the time needed for the approval of project revisions, which is due to the high number of grants per project and the frequent need to issue or revise allotments for projects and other changes in operational requirements (in 2018 there were 9,514 allotment revisions for 1,144 grants and 330 active projects, with an average time needed to approve project revisions of 60 days), which has an impact on the planning, implementation, monitoring and reporting of projects.