Why do I need a NIF?

You need a NIF for any sort of official transaction in Portugal. 

Here are some examples:

• Opening a bank account
• Renting property long-term
• Buying or selling property
• Setting up utilities (water, gas, electricity)
• Signing a mobile phone contract
• Applying for a mortgage or other forms of credit
• Enrolling in a school
• Getting hired in Portugal and receiving your salary
• Receiving social security payments and other benefits in Portugal
• Filing and paying taxes in Portugal
• Buying a car
• Applying for a driver’s license
• Inheriting Portuguese assets