The article deals with the problem of the functional classification of tools from the monuments of the Bronze Age in forest-steppe Altai. The authors emphasize the need to establish functional classifications based on the results of the trasological analysis of tools’ collections. The paper analyzes the available in archeological science experience of functional classification and also focuses on the insufficient development of methodological issues associated with this procedure. In addition to theoretical problems, consideration is given to the practical difficulties arising with the creation of the Bronze Age work tools’ functional classification. The specificity is substantiated of classification of bone tools. According to the authors, certain difficulties are associated with the inclusion to the functional classification of reused multifunctional objects and tools used for the same labor operations but demonstrating different technical and morphological characteristics. As one of possible solution to these problems, the authors propose to introduce to the functional classification a fractional unit — “a functional variant”.