Your Tax Identification Number (TIN) is usually found on official documents from the Tax and Customs Administration or the government, such as tax letters, identity cards, or tax declarations.
In the Netherlands, the Tax Identification Number is referred to as the BSN (Citizen Service Number). You can find this number on your passport, identity card, and driver's license, among other documents.
In the images below, you can see examples of documents on which the TIN is indicated. View them below to quickly check where the number you need to use to submit your details is located.
Check out this website for more information about finding the TIN number on documents in your country!