Before registering a business in Portugal, choose the legal form carefully. The biggest practical differences are whether you operate personally or through a separate company, whether your personal assets can answer for business debts, how many owners there are, the capital structure and the amount of company administration required.
Freelancer / trabalhador independente
A trabalhador independente works for their own account rather than through a limited company. In everyday conversation this is often associated with recibos verdes, the electronic receipts/invoices used by many self-employed people. You normally open activity with the Tax Authority (Finanças) and are then subject to the applicable tax and Social Security rules.
This can be the simplest route for an individual providing professional services, but it is not the same thing as creating an Lda. company. Your activity, tax position and professional risks should determine whether remaining self-employed is sensible.
gov.pt — working for yourself in Portugal
Empresário em Nome Individual (ENI)
An Empresário em Nome Individual is a business operated by one natural person. There is no mandatory minimum capital, but there is also no general separation between personal and business assets: the entrepreneur has unlimited liability for business debts. The official business-start guide directs ENIs to open activity with Finanças and complete the Social Security framework.
This simplicity can suit some small individual businesses, but the unlimited-liability point is fundamental when comparing ENI with a limited company.
Sociedade Unipessoal por Quotas — one-owner Lda.
A Sociedade Unipessoal por Quotas is a limited-liability company with one shareholder, who can be a person or another legal entity. The shareholder holds the whole capital. The capital is freely set in the articles, with a quota of at least €1, and the company name must include Unipessoal and Limitada or Lda.
The key attraction is separation: official guidance states that only company assets answer to creditors for company debts. That does not make directors or owners immune from every possible personal liability — guarantees, unlawful conduct and specific legal duties can still matter — but it is fundamentally different from ENI unlimited liability.
gov.pt — Sociedade Unipessoal por Quotas
Sociedade por Quotas (Lda.) — the common multi-owner limited company
A Sociedade por Quotas normally has at least two shareholders (sócios). Its capital is divided into quotas and is freely fixed in the articles; each quota must be at least €1. The company name ends in Limitada or Lda. Official guidance describes shareholder liability as limited and states that company assets answer for company debts, subject to what the articles and applicable law provide.
For a small or medium business with two or more owners, this is one of the first forms to compare. The articles should deal properly with ownership, management and the relationship between shareholders rather than treating the company as merely an administrative registration.
Justiça — compare Unipessoal, Lda. and S.A.
Sociedade Anónima (S.A.)
A Sociedade Anónima has capital divided into shares. It normally requires at least five shareholders, although a single shareholder is possible when that shareholder is itself a company. Minimum share capital is €50,000, and shareholders’ liability is limited to the shares subscribed.
An S.A. is therefore not simply a more impressive version of an Lda.; it is a different corporate structure, generally relevant where the ownership, investment or governance needs justify the additional formality and capital.
Less common forms
Portugal also provides other legal forms. These exist for real reasons, but they are less likely to be the default choice for a newcomer starting an ordinary small business.
- Sociedade em Nome Coletivo — a partnership with unlimited liability: partners answer subsidiarily for the company and jointly with each other.
- Sociedade em Comandita — combines partners with different liability roles and is comparatively uncommon for ordinary small-business formation.
- E.I.R.L. — Estabelecimento Individual de Responsabilidade Limitada — an older individual limited-liability structure. Official guidance states a minimum capital of €5,000 and a separate pool of assets allocated to the establishment.
- Cooperative — a distinct member-based structure. Portugal provides dedicated cooperative registration procedures rather than treating a cooperative as an ordinary Lda.
gov.pt — official overview of business legal forms
At-a-glance comparison
| Form | Owners | Liability / capital | Typical reason to consider it |
|---|---|---|---|
| Trabalhador independente | 1 person | No limited company created | Solo professional/freelance activity |
| ENI | 1 person | Unlimited personal liability; no minimum capital | Simple individual commercial business |
| Unipessoal Lda. | 1 shareholder | Limited company; quota from €1 | Solo owner wanting a company structure |
| Lda. | Normally 2+ | Limited company; quota from €1 per shareholder | Small/medium company with multiple owners |
| S.A. | Normally 5+ | Limited; €50,000 minimum capital | Larger/investment-oriented corporate structure |
| E.I.R.L. | 1 person | Separate business assets; €5,000 minimum capital | Less-common individual structure |
How do you actually create the company?
For the three mainstream company forms — Unipessoal Lda., Lda. and S.A. — Portugal provides both Empresa Online / Empresa 2.0 and the in-person Empresa na Hora service. The online process asks for the legal form, shareholders and managers/directors, CAE activity, company object, capital, registered office, contacts, company name and beneficial-owner information. Foreign shareholders can face additional identification/document requirements.
Empresa na Hora can form these companies at a single counter using approved names/articles or an approved name certificate. The standard in-person formation fee is currently listed as €360; always check the live service page before relying on a fee.
Which form should you investigate first?
- One person selling services with limited commercial risk: compare trabalhador independente with a Unipessoal Lda.
- One person running a business with meaningful contractual/debt risk: understand the liability difference between ENI and Unipessoal Lda. before choosing.
- Two or more founders: an Lda. is an obvious starting point for comparison, but agree ownership and management properly.
- Substantial outside investment or a larger share-based structure: investigate an S.A. with professional advice.
- Member-owned/common-purpose organisation: investigate the cooperative regime rather than forcing the activity into an ordinary company.
Useful official links
- gov.pt — Start a business: legal forms
- gov.pt — Work for yourself
- Justiça — company types
- Empresa Online / Empresa 2.0
- Empresa na Hora
- IRN — company-name rules
Last verified: 2 October 2026. This is a practical comparison, not individual tax or legal advice. Confirm the current rules and choose the structure with a Portuguese accountant or lawyer where liability, international ownership, tax or investment makes the decision material.