Tax number in Turkey (vergı numarsı) is a number of your own, you are sometimes asked for it in legal and official transactions or when opening a bank account in Turkey.You can get it easily through the following: Bring a copy of your passport and your address in Turkey.Go to the nearest tax directorate (vergı müdürlüğü) in your neighborhood and ask for a tax number. They will enter your information into the system and give you a card with a tax number of your own.A simpler way to get a tax number is to go to the official website and get a tax number online by filling out a simple form.