Abstract:One of the important issues concerning development of spatial data infrastructures (SDIs) is the carrying out of economic and fi nancial analysis. It is essential to determine expenses and also assess effects resulting from the development and use of infrastructures. Costs and benefi ts assessment could be associated with assessment of the infrastructure effectiveness and effi ciency as well as the infrastructure value, understood as the infrastructure impact on economic aspects of an organisational performance, both of an organisation which realises an SDI project and all users of the infrastructure. The aim of this paper is an overview of various assessment methods of investment as well as an analysis of different types of costs and benefi ts used for information technology (IT) projects. Based on the literature, the analysis of the examples of the use of these methods in the area of spatial data infrastructures is also presented. Furthermore, the issues of SDI projects and investments are outlined. The results of the analysis indicate usefulness of the fi nancial methods from different fi elds of management in the area of SDI building, development and use. The author proposes, in addition to the fi nancial methods, the adaptation of the various techniques used for IT investments and their development, taking into consideration the SDI specifi city for the purpose of assessment of different types of costs and benefi ts and integration of fi nancial aspects with non-fi nancial ones. Among the challenges are identifi cation and quantifi cation of costs and benefi ts, as well as establishing measures which would fi t the characteristics of the SDI project and artefacts resulting from the project realisation. Moreover, aspects of subjectivity and variability in time should be taken into account as the consequences of defi nite goals and policies as well as business context of organisation undertaking the project or using its artefacts and also investors.