In this article the Moore Forensics Due Diligence team focuses on what we will term the ‘do’s and ‘don’ts any tenderer is to be aware of when completing and submitting a tender/bid. Evidence obtained from having reviewed countless bid submissions points to the fact that tenderers - at times - make avoidable errors at the bid completion stage, with these errors resulting in the tenderer’s bid being considered non-responsive. By being mindful of – and applying the following do’s and don’ts when completing a bid document should provide additional comfort that the time invested when preparing a bid document will at least afford the tenderer an equal competitive opportunity, i.e. the tenderer’s bid will be evaluated by the relevant governance committee. This article therefore serves as a guide and tool for tenderers to not only complete tender documents correctly and fully, but also ensure a responsive tender is submitted.