Announcement 11 August 2025: - The deadline of submission was extended from 15 August 2025 17:00 hours to 22 August 2025 17:00 hours, Geneva time. - The SET 1 of the Q&A is now available under "Documents" tab.   The purpose of this Request for Proposals is to identify a suitable contractor to: Develop a transparent, evidence-based global methodology to estimate the financial and health-related costs of corruption in the health sector. Use the methodology, develop a global estimate of corruption losses in health systems (both financial and foregone benefits). Design a practical, modular national methodology and user-friendly tool to support country-led assessments of the cost of corruption.   See detailed Terms of Reference and bidding instructions under “Documents” below.  Please note: it is NOT necessary to click on “Express Interest” on the top right-hand side of the screen. In order to inform WHO that you are interested in participating in this Request for Proposals, please follow the provisions of the RFP document below.