Do I Legally Have to Use My NIF When Making a Purchase?

By James Cave / Published: February 2022.
Posted in: QandA

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Discount code: PORTUGALIST

When you go to the checkout at a Portuguese supermarket, the cashier will normally ask you a question like contribuinte? This means would you like to register your NIF number against this receipt. Sometimes you don’t get asked, though, and you also have the option of just saying no — as a non-resident visiting Portugal would. However, when it comes to other purchases like a house or a car, you’re not asked whether you’d like to use your NIF number; it’s a requirement. Why is this?

According to Kathleen Lo from, a company that helps people moving to Portugal obtain a NIF number, ‘you are required to provide your NIF when making large purchases like a car or a house because these come with annual tax obligations. In the supermarket, giving your NIF is optional because this simply allows you to have tax deductions on your personal income.’

If you haven’t been asked for your NIF number in a shop, you can ask to use it. It’s possible, for example, that the person at the checkout thinks that you’re a tourist. According to Kathleen, ‘if you’d like to use your NIF, simply ask the cashier for your NIF to be included on the receipt.’

Moving to Portugal Made Simple Cover Wish moving to Portugal was a little more simple? 

Now it can be. Get the book Moving to Portugal Made Simple from Amazon. are able to arrange a NIF for €150 (or €140 if you use the code PORTUGALIST). For more information, read our guide to getting a Portuguese NIF.

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