The NIPC is a single number that works as both a company's registration number and its tax number in Portugal.
What it is
The NIPC (collective person registration number) is a company's official identification number in Portugal. It works as both a company registration number and a tax number at the same time. In other words, a company's NIPC is also its NIF, the tax number used for legal entities, not two separate numbers issued by two different offices.
What it is for
The NIPC identifies a company in official dealings, such as registering with authorities, signing contracts, opening a bank account, and filing taxes. It is the number authorities and other parties use to look up a company and confirm its identity. It appears on invoices, official letters, and most business paperwork, so it tends to be one of the first details asked for.
Who needs it
Every legal entity operating in Portugal needs a NIPC, whether it is a Portuguese company or a foreign company that registers a presence there. Without a NIPC, a company cannot be properly identified in dealings with Portuguese authorities, and it cannot be registered for tax.
Where to get it
The NIPC is assigned when a company is set up in Portugal, as part of the registration process. The IRN (the institute of registries and notaries) carries out the registration, while a separate national register keeps the underlying record of legal entities and their numbers.
What to watch out for
Having a NIPC only means a company is registered. It does not, by itself, mean the company has an active tax obligation in Portugal, such as being registered for VAT. Whether a company also has ongoing tax duties depends on its actual activity, not just on holding a NIPC.
A NIPC on its own does not prove that a company pays tax in Portugal. Ongoing tax obligations depend on the company's actual activity, not the number itself.