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How to check your Portugal vehicle circulation tax (IUC) online

Follow these step-by-step instructions to check your Portugal vehicle circulation tax (IUC) online through Portal das Finanças.


As a vehicle owner in Portugal, you are required to pay a vehicle circulation tax, which is known as Imposto Único de Circulação (IUC).

Your IUC bills are typically sent by mail to the address associated with your NIF (Número de Identificação Fiscal). If you would like to check your vehicle circulation tax (IUC) online through Portal das Finanças, the following instructions will guide you through the process.

The payment of your vehicle circulation tax (IUC) is separate from the filing of your personal income tax return in Portugal.

Step 1: Log in to Portal das Finanças

1. Go to https://www.portaldasfinancas.gov.pt/

2. Click on the Iniciar Sessão button at the top right corner of the page.

3. Click on the NIF tab.

4. Enter your NIF number. Where can I find my NIF number?

5. Enter your password.

6. Click the Autenticar button.

Step 2: Navigate to the Outstanding Payments page

1. Search for the keyword Pagamentos a Decorrer using the search bar at the top of the page.

2. Find ”Pagamentos A Decorrer” and click Aceder.

3. You will see all outstanding tax dues on this page.

Step 3: Locate your IUC bill

1. Type “IUC” on the upper right side of the table to filter the list for your vehicle circulation tax bills.

2. Once you’ve located your IUC bill, click Ver Detalhe.

You will be directed to the page containing your IUC Collection Note (Nota de Cobrança de IUC), where you will find the following information about your taxes due:

English Translation

Identificação do Documento

Document Identification

Sujeito Passivo

Taxable Person

Quantidade de Veículos Liquidados

Number of Vehicles Liquidated

Valor Emitido

Issued Value

Valor Anulado

Annulled Value

Valor Pago

Amount Paid

Data de Emissão

Date of Issue

Tipo de Nota

Type of Note

Referência de Pagamento

Payment Reference

Data Limite de Pagamento

Payment Deadline

Data de Estado

Date of Status