International audience ; The West Netherlands Basin (WNB) and the neighbouring Roer Valley Rift System (RVRS) form the most prominent tectonic features of the onshore Netherlands. The two basins have a common tectonic origin and similar Mesozoic evolution, their Neogene–Quaternary evolution, however, is markedly different. While the WNB is tectonically/seismically inactive and is characterised by uniform Neogene–Quaternary subsidence, in the RVRS fault controlled intra-plate deformation has taken place since Late Oligocene times with pronounced seismic activity. Considering the present-day NE–SW regional extension as well as the similar basin orientation and Mesozoic evolutions one would not expect strikingly different neotectonic activity in the two basins. Detailed analysis of Mesozoic, Tertiary and Quaternary fault patterns revealed that (1) the Palaeozoic–Mesozoic tectonic fabric has great influence on the Cenozoic deformation style of the basin system; (2) present-day faulting in the RVRS is related to the reactivation of pre-existing faults and (3) the Mesozoic fault pattern is slightly different in the two basins. Using a novel technique (three-dimensional (3-D) slip tendency analysis) we aim to determine whether these differences in fault orientation are substantial enough to produce significantly different resolved stresses along the faults. This modelling not only tests a common geological phenomena but indirectly also delivers important constraints regarding the origin of faulting in the study area. During the analysis 3-D geometric models of 84 mapped faults were investigated. The results of this recently developed modelling technique reveal that the faults in both basins should behave similarly under the condition of a laterally homogeneous regional stress field, which is in disagreement with the present-day tectonic activity of the region. On the other hand the modelling also reveals that the predicted tendency of slip is very sensitive to the ratio of the minimum horizontal and the vertical stress ...