Astana. February 21. Kazakhstan Today - The Prime Minister of Kazakhstan Karim Masimov considers it necessary to decrease corporate tax for processing industries. The Prime Minister Karim Masimov said today during the forum of tax bodies' officials, the agency reports. "Decrease of corporate tax for processing industries is necessary, the order of its payment should be improved and depreciation term should be reconsidered from three till five years," K. Masimov said. K. Masimov also considers it necessary "to toughen responsibility for granting of doubtful invoices for suppliers." "I charge the Minister of Economics and the Minister of Finance to consider the issue: if there is the necessity of introduction of sales taxes," K. Masimov added.