How long does it take to fill in the questionnaire? EcoVadis Support (BOA) January 09, 2018 01:21 Updated It will take approximately from a few hours to a few days to complete the dynamic questionnaire and upload all required documents. This depends on your company size and CSR maturity level, as well as whether you have all the requested information (including documents) at hand. Related articles How to navigate through the questionnaire? What should I prepare to complete the questionnaire? Do I have to answer the entire questionnaire in one session? What type of supporting documents can I provide? How do I access the questionnaire platform? Comments 0 comments Article is closed for comments.