The Slovak sectoral dynamic partial equilibrium econometric model based on EU GOLD model was used for the analysis of the development of the Slovak oilseed markets after EU accession. Oilseed production increased during the transition especially due to growth of rapeseed and sunflower production. Simulation results for rapeseed, sunflower and soybean are provided in this article. Two scenarios are analysed: non-accession baseline and accession with adoption of single area payment scheme. EU accession is expected to increase oilseed prices, which will result in decline of consumption. Direct payments will have limited impact on oilseed production. Trade balance for rapeseed and sunflower will improve.