The article presents an alternative method to growth accounting. It makes it possible to express the effect of change in the quantity of inputs as well as the effect of the productivity of inputs (i.e. technological changes) on the change of GDP for all possible typologies of input/output changes. Dynamic parameters of intensity and extensity could be delivered as the output of the method. The first one captured the effect of change in the summary productivity factors, while the latter captures changes in the input quantity. The dynamic parameters were calculated for the development of GDP of the Czech Republic and the Slovak Republic in the period 1990 – 2014.The results confirm more intensive Slovak development in the given period that is manifested in reaching of Czech value of GDP per capita expressed in purchasing power parity (PPS).