Purpose The purpose of this paper is to test how national culture may help to explain cross-country differences in new service development (NSD) by comparing the impact of NSD success factors between Mexico and Sweden. Design/methodology/approach Eight hypotheses based on prior literature on NSD and national culture were tested using covariance-based structural equation modeling and survey data from 210 Mexican and 173 Swedish firms. Findings Launch proficiency and customer interaction had a positive impact on NSD performance with no difference between the two cultures. NSD process formalization did not have clear positive impact on NSD performance but had a statistically significantly stronger impact in the structured culture (Mexico). Team empowerment affected NSD performance positively, but the difference between cultures was non-significant. Originality/value Paper directly tests how national culture moderates NSD performance using primary data. Findings suggest that the effects of NSD success factors are contingent on congruence with national culture.