The conclusions of EFSA following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State the United Kingdom and co‐rapporteur Member State Germany for the pesticide active substance thiacloprid are reported. The context of the peer review was that required by Commission Implementing Regulation (EU) No 844/2012. The conclusions were reached on the basis of the evaluation of the representative uses of thiacloprid as an insecticide on oilseed rape foliar use and maize seed treatment. The peer review also provided conclusions on whether exposure of humans to thiacoprid can be considered negligible, taking into account the European Commission's draft guidance on this topic. Confirmatory data following the review of existing maximum residue levels (MRLs) according to Article 12 of Regulation (EC) No 396/2005 were also assessed in this conclusion. The reliable end points, appropriate for use in regulatory risk assessment are presented. An evaluation of data concerning the necessity of thiacloprid as an insecticide to control a serious danger to plant health which cannot be contained by other available means, including non‐chemical methods is presented. Missing information identified as being required by the regulatory framework is listed. Concerns are identified.