Chapter V · Charging and payment of the tax · Section III · Other obligations of taxable persons

Article 31 Declaration of commencement of activity

Artigo 31.º · Declaração de início de actividade

Código do Imposto sobre o Valor Acrescentado · republished by Decree-Law No. 102/2008 · consolidated text checked 26 October 2026

#

1. Natural or legal persons carrying on an activity subject to VAT must submit the corresponding declaration at any tax office or other legally authorised place before commencing the activity.

1 - As pessoas singulares ou coletivas que exerçam uma atividade sujeita a IVA devem apresentar, em qualquer serviço de finanças ou noutro local legalmente autorizado, antes de iniciado o exercício da atividade, a respetiva declaração.

#

2. (Repealed.)

2 - (Revogado.)

#

3. The declaration referred to in paragraph 1 is not required in the case of persons liable to VAT for carrying out a single taxable transaction under Article 2(1)(a).

3 - Não há lugar à entrega da declaração referida no n.º 1 quando se trate de pessoas sujeitas a IVA pela prática de uma só operação tributável nos termos da alínea a) do n.º 1 do artigo 2.º

What we checked in this article

The obligation to file before commencing the activity and the exclusion of persons liable for a single taxable transaction under Article 2(1)(a) are retained.

Not sure how Article 31 applies to your invoices?

We register foreign-owned companies for VAT, set up invoicing, file periodic returns and recapitulative statements, and check place-of-supply and exemption positions, in English. A written answer and a fixed quote within one working day.

Unofficial English translation prepared by BCA Portugal for reference. Only the Portuguese text published in the Diário da República has legal force. Editorial notes are ours and are not part of the statute.

Applying the law

Portuguese VAT, set up right from the first invoice

Most VAT problems start with a wrong regime at registration or a wrong invoice wording. Tell us what you sell and to whom; we set up the registration, the invoices and the filing calendar.

Get a quote