This paper deals with the interaction between morphology and stress assignment in a rule-based grapheme-to-phoneme conversion system for Dutch which is being developed at the Universities of Utrecht and Leyden and at the Institute of Perception Research at Eindhoven (see also ref 1 and ref 5). In order to establish the interaction between morphology and stress assignment we will deal with some aspects of our rule system, present a survey of the relevant linguistic data in Dutch and show how the former accounts for the latter.