Importance of adding your NIF NIPC number on every purchase - English speaking accountant

Starting a business in Faro or Quarteira — areas often referred to as part of the “Golden Triangle” — can be a rewarding step for expat entrepreneurs. One important detail to keep in mind is making sure your NIF (Número de Identificação Fiscal) or NIPC (Número de Identificação de Pessoa Colectiva) is included on every business purchase. In this article, we’ll look at why that matters and how it can affect your ability to maintain accurate records and stay aligned with Portuguese tax requirements.

What is a NIF/NIPC ?

The NIF is a unique tax identification number assigned to individuals and businesses in Portugal. For companies, this number is referred to as the NIPC. Internationally, they’ll often refer to this as your VAT number.  In these cases you’ll need to add “PT” to the beginning of your NIPC, for example PT555555555.

Why is Adding your NIF/NIPC to Invoices Important?

Including your NIF/NIPC on all business-related invoices and receipts is required for deducting these expenses from your taxable income.  If you make a business purchase without including the business’s NIPC it cannot be deducted as a taxable expense.  

The Impact of Missing NIF/NIPC on Purchases

Failing to include your NIF or NIPC on invoices can result in the inability to deduct valid business expenses. 

It’s easy to forget to add your fiscal number to an invoice, especially if you aren’t prompted to. It’s important to ask to add your fiscal number, or when buying online, review your billing settings and manually add your NIF or NIPC to ensure your invoices are issued correctly.

Common Scenarios and Solutions -

  • In Person Purchases: People often forget to add their fiscal number when making in-store purchases, especially if it's a quick stop or if they aren't asked.
  • Large Equipment Purchases: A client setting up a new restaurant in Quarteira made substantial furniture purchases but forgot to include their NIF on the invoices. This mistake led to lost deductions and substantially increased the taxes that should have been due.
  • Client Meetings at Restaurants: Business owners often feel awkward asking for the NIF to be added to restaurant receipts. However, not doing so means losing out on deductible expenses, which can significantly impact the bottom line. These expenses add up quickly.

How Elevate Accounting Can Help -

Elevate Accounting supports expat business owners in Loule, Almancil, Faro, and Quarteira with their ongoing accounting and financial management.  This includes bookkeeping, payroll, and VAT compliance. Our English-speaking team works to provide clear communication and guidance, helping you navigate the responsibilities that come with running a business in Portugal.

One important detail is making sure your NIF or NIPC is included on every business purchase. This small step is essential for proper documentation and tax reporting. If you’d like to learn more about how we can support your business, feel free to reach out.

Ready to Chat?

Contact us today for a free consultation and to discuss your business and how we can provide support.

contact us

Learn how we helped 100 top brands gain success