An apparatus and method for obtaining data regarding toner refilled in an image forming apparatus, to achieve the highest printing quality using the refilled toner. The method includes checking whether the image forming apparatus has been refilled with toner; checking whether toner identification information is present, when the image forming apparatus has been refilled with toner; obtaining toner data using the toner identification information from outside the image forming apparatus, when the toner identification information is present; and determining the toner data in the image forming apparatus, when no toner identification information is present. Accordingly, when the image forming apparatus is refilled with better toner than the original, it is possible to improve the quality of printing by setting data regarding the refilled toner in the image forming apparatus.