How do I register as a freelancer in Portugal?

You register by opening your activity (abertura de atividade) on the Portal das Finanças. You'll need your NIF (tax number), a Portuguese bank account, and a CAE or CIRS code for your activity type. The registration is free and takes 15–30 minutes online. Once complete, you can issue invoices immediately.

What is a Recibo Verde?

Recibo Verde (green receipt) is the informal name for invoices issued by freelancers in Portugal. The term comes from the green paper forms used historically. Today, invoices are issued digitally through certified software or directly on the Portal das Finanças. The underlying legal document can be a fatura, fatura-recibo, or recibo depending on your VAT status.

What is the simplified regime (regime simplificado) in Portugal?

The simplified regime is Portugal's default tax regime for freelancers earning below €200,000/year. Instead of tracking and deducting actual business expenses, AT applies a fixed coefficient to your gross receipts. For most service providers, 75% of gross income counts as taxable. You don't need an accountant to file under simplified regime.

Do I need a NIF to work as a freelancer in Portugal?

Yes. A NIF (Número de Identificação Fiscal) is mandatory for any taxable activity in Portugal. EU citizens can get one at a Finanças office or some Lojas do Cidadão. Non-EU citizens need a fiscal representative. Once you have a NIF, registering your activity and issuing invoices takes a few hours.

What is a CAE code and which one do I need?

CAE (Classificação Portuguesa de Atividades Económicas) is the Portuguese classification of business activities, equivalent to SIC codes. Freelancers in the service sector more commonly use CIRS article codes instead of CAE. The code determines how AT calculates your taxable income coefficient. Using the wrong code can affect your tax liability.

Can I register a company (Lda) instead of operating as a sole trader?

Yes. A Lda (Sociedade por Quotas) is Portugal's equivalent of a limited company. It requires a minimum capital of €1 and can be registered online via Empresa Online, though in practice the process takes several weeks and involves fees. For most freelancers just starting out, operating as a sole trader (trabalhador independente) under the simplified regime is simpler and cheaper.

What happens with Social Security when I register as a freelancer?

For your first 12 months after opening activity, you're exempt from Social Security contributions. After the exemption period, you pay 21.4% on 70% of your gross receipts from the previous quarter. The first payment falls due around the 20th of January in your second year of activity.

Registration & Identity

Getting Started as a Freelancer in Portugal: The Complete Hub

How to register as a freelancer in Portugal, understand Recibos Verdes, open your activity, check NIFs, and set up invoicing: all the guides in one place.

Last updated: 2026-05-31

Starting a freelance activity in Portugal is less complicated than it sounds, but there's a specific order to do things in, and a handful of terms you need to understand before anything makes sense.

This page maps out everything we've written about registering, invoicing, and understanding how solo business works in Portugal. Whether you're a Portuguese national or an expat setting up for the first time, start here.

The fundamentals

In Portugal, working for yourself means you're a trabalhador independente: an independent worker. Most freelancers operate under the simplified regime (regime simplificado), which keeps the paperwork manageable. You don't need a separate business bank account or a formal accountant to get started.

The first step is opening your activity (abertura de atividade) on the Portal das Finanças. This is free, takes about 15–30 minutes, and gives you the legal right to issue invoices. You pick a CAE code (or CIRS article code) that describes what you do. This matters because different codes carry different tax coefficients.

Once registered, your invoices are called Recibos Verdes. Issued digitally through certified software or the portal itself, they're how you document every payment you receive. AT gets a copy automatically.

Start here

If you need to verify someone's NIF before issuing an invoice, start with this free tool:

NIF Checker: look up Portuguese NIFs and EU VAT numbers via VIES →

Step-by-step guides

Green receipts in Portugal: what they are and how they work: explains Recibos Verdes from scratch: what they are, when to issue them, and the difference between a fatura and a fatura-recibo.
Before you hire anyone in Portugal, check their NIF: here's how and why: how to verify a NIF, what the lookup tells you, and why it matters before you pay for a service.
Starting a Business in Portugal in 24 Hours: one founder's experience registering a Lda via Empresa Online 2.0, what worked and what didn't.
Company Registration: One Step Forward, Many Steps Sideways: the sequel: the bureaucratic hurdles after initial registration.
Company Registration: Heard of SOLVIT?: when the Empresa Online system fails EU citizens and what escalation options exist.

Reference material

Glossary terms:

Abertura de Atividade (Opening Activity): the formal registration step that activates your freelance status
Recibo Verde: what green receipts are and the legal document types behind the name
CAE Code: how Portuguese activity codes work and how to pick yours
Simplified Regime (Regime Simplificado): how the default freelancer tax regime works
Trabalhador Independente: the legal category for independent workers in Portugal

NIF Checker: look up Portuguese NIFs and EU VAT numbers via VIES
Tax Calculator: estimate your income tax and Social Security for years 1–3 of your activity
VAT Guide: check your VAT obligations once your activity is open

Related terms

Abertura de Atividade

The process of registering as a self-employed worker (trabalhador independente) with the Portuguese tax authority, officially starting your freelance activity.

Recibo Verde

A combined invoice-receipt (fatura-recibo) issued by solo entrepreneurs in Portugal through the Portal das Finanças when they receive payment for services.

CAE

The Portuguese economic activity classification code. Assigned when you open your business activity. Determines your tax category, applicable coefficients, and which obligations apply.

Regime Simplificado

Portugal's simplified tax regime for solo entrepreneurs and small businesses, where taxable income is calculated using fixed coefficients applied to gross revenue.

Trabalhador Independente

The Portuguese term for an independent worker or sole entrepreneur, the equivalent of a freelancer or sole trader in other countries.

The fundamentals

Start here

Step-by-step guides

Reference material

Related tools

Related terms