Every official regulation in Poland needs to be analysed in terms of its potential impact on economy, society and environment before being submitted to the parliament for debate and enactment. Impact Assessment is a common practice in EU countries, further encouraged and supported through the ‘Better Regulation 2015’ programme. The recent update of the Impact Assessment (IA) guidelines opened an opportunity for the integration of policy coherence for development (PCD) approach in the Polish legislative process. Following a focused advocacy action of Grupa Zagranica the new guidelines include a question relating to the potential “impact on social and economic development of priority countries of Polish development cooperation”. Grupa Zagranica plans further activities aiming at supporting the implementation of this element of the IA guidelines.