dear konuk,
It is not very clear in your message that which tax code you are interested and whether you demand an english translation or not; but ı am afraid no translation is available as far as ı know excepting main remarks on turkish tax law.

http://www.gelirler.gov.tr ('mevzuat' link)
serves a turkish database for Turkish tax law as well gives information on RESTRUCTURING OFTHE REVENUE ADMINISTRATION AND TAX AUDITING" in English.