For many foreign founders, incorporating a company in Portugal feels like the finish line. In reality, it is usually just the beginning.

What to Do After Incorporating a Company in Portugal

Once the company is officially incorporated, a completely new phase starts: setting up the company’s accounting, tax and operational structure correctly from day one.

This is also the stage where many companies unintentionally create future problems, often simply because they are unfamiliar with the Portuguese system and its practical requirements.

From opening the company’s bank account to activating the company before the Tax Authority, registering managers with Social Security and preparing invoicing procedures, the first weeks after incorporation are often far more important than many founders initially expect.

1. The company has been incorporated. What happens now?

Once the incorporation is completed, the Commercial Registry Office notifies both the Portuguese Tax Authority and Social Security of the company’s existence.

After this:

• The Tax Authority will send a letter to the company’s registered address containing the access code to the Tax Authority portal;
• The Social Security will send a letter to the company requiring the company and managers registration for contribution purposes.

These initial communications are extremely important and should be carefully monitored from the beginning.

2. Opening the company bank account

One of the first practical priorities is opening the company’s bank account through which all payments and receipts of the company must be made.

This step is essential not only for operational reasons, but also because several tax and accounting procedures may depend on the company already having an active bank account.

Delays at this stage can sometimes create avoidable complications with the company’s initial compliance obligations.

3. Activating the company before the Tax Authority

After incorporation, the company must submit within 15 days of submitting the company registration its declaration of commencement of activity to the Portuguese Tax Authority.

This is one of the most important initial tax obligations and formally activates the company for tax purposes.

The declaration must be submitted by a Certified Public Accountant, who needs the following information to do so::

• access details (tax identification number and access password) to the Tax Authority portal;
• the company’s bank account details;
• activity start date.
  

4. Registering contact details with the Tax Authority

The company should also register its email address and telephone contacts with the Tax Authority.

These contacts are used for official notifications and communications.

Keeping this information updated is essential to avoid missing important deadlines or notices.

5. Social Security obligations and manager registration

After incorporation, the company must also address its initial Social Security obligations.

This may include the registration of the company’s managers for contribution purposes.

For this process, the following elements are commonly required:

• remuneration minute;
• passports of the managers;
• full names of the managers’ parents;
• confirmation of whether the managers will be remunerated or unpaid.

Many foreign founders are surprised to discover that Social Security obligations may still exist even where managers are unpaid.

In certain situations, however, exemptions may be available, particularly where the manager already contributes to Social Security in another country.

6. Preparing the company to issue invoices

Before the company begins invoicing clients, it must ensure that it uses invoicing software certified by the Portuguese Tax Authority.

Choosing the appropriate software early on is important not only for compliance purposes, but also for the day-to-day operational efficiency of the business.

A properly organised invoicing structure from the beginning can prevent significant administrative difficulties later on.

7. Organising accounting and internal procedures from day one

Good accounting starts long before the first tax inspection or accounting deadline.

From the beginning, the company should establish clear internal procedures regarding:

• storage of invoices and receipts;
• organisation of expense documentation;
• bank records;
• contracts;
• payroll documentation, where applicable;
• and communication flows with the accounting team.

Companies that organise these procedures early usually experience smoother growth and fewer compliance issues.

8. Why accounting support should begin immediately after incorporation

One of the most common misconceptions amongst foreign founders is that accounting only becomes important once the company starts generating significant revenue.

In practice, the accounting structure should exist from the very beginning.

Early accounting support helps ensure that:

• deadlines are properly monitored;
• tax obligations are correctly fulfilled;
• invoicing procedures are compliant;
• Social Security obligations are addressed;
• and the company starts operating with an organised and reliable structure.

Final Thoughts

Incorporating a company in Portugal is only the first step.

Proper support from the very beginning is crucial for building a compliant, organised and operational business structure.

For foreign founders especially, the Portuguese administrative and tax framework can involve practical requirements that are not always obvious during the incorporation process itself.

Having accounting support from the beginning can make the transition significantly smoother and help avoid unnecessary risks, delays and compliance issues in the future. For companies navigating the Portuguese tax and administrative framework, experienced guidance early on can make a meaningful difference. Our team at Belion is available to support you at every stage of the process. If you have any questions regarding your company’s post-incorporation obligations or would like tailored advice, please get in touch via our Contact Form.