Method and system for automatically processing blanks for forming packaging boxes. By means of a feeding conveyor blank material is fed in a feeding direction from a storage of blank material to a single blank cutting station comprising a blank forming apparatus for cutting and creasing blank material into a blank. By means of said blank forming apparatus a blank is formed having a rectangular bottom panel and rectangular corner, side and end panels. Cutting and creasing blank material into the blank is performed during feeding of said blank material in feeding direction through the blank forming apparatus.