For many employees, filing Portuguese IRS is fairly straightforward. If your affairs consist mainly of ordinary Portuguese employment income and you meet the eligibility conditions, much of the information is already reported to the Autoridade Tributária (AT), and you may be offered IRS Automático. More complex situations—foreign income, investments, property, self-employment, capital gains or an inheritance—deserve more checking.

The annual IRS return in one minute

  • Tax: IRS — Imposto sobre o Rendimento das Pessoas Singulares.
  • Return: Modelo 3, filed electronically through Portal das Finanças.
  • Normal filing period: 1 April to 30 June of the following year.
  • Residents: generally declare Portuguese and foreign-source income, subject to the detailed rules and treaty relief.
  • Non-residents: Portuguese filing obligations are generally limited to relevant Portuguese-source income.

AT’s current Modelo 3 guidance and IRS calendar should be checked each filing season.

If you are simply employed, start with IRS Automático

A person with straightforward Portuguese employment income may find the process largely pre-filled. IRS Automático is not available to everybody; eligibility depends on AT’s statutory conditions for that year. When eligible, AT prepares a provisional return using income and expenses reported by third parties and household information already held by AT.

Do not treat “automatic” as “nothing to check”. Review your identity and household, income, withholding, deductible expenses, IBAN and the calculation. If the provisional information does not reflect your real tax situation, AT says you should not confirm it; submit the appropriate Modelo 3 instead. See AT — IRS Automático.

What income can enter Portuguese IRS?

The main statutory categories include:

  • Category A: employment income;
  • Category B: business and professional/self-employed income, including many recibos-verdes activities;
  • Category E: investment/capital income such as interest and dividends;
  • Category F: property/rental income;
  • Category G: capital gains and other patrimonial increases;
  • Category H: pensions.

The tax treatment within each category can differ substantially. A withholding rate is not necessarily your final effective annual tax rate.

Foreign income: especially important for newcomers

If you are Portuguese tax resident, AT states that you generally declare income obtained both in Portugal and abroad. Foreign-source income is normally reported using Anexo J, including the relevant gross income and, where applicable, foreign tax actually paid. Portugal’s double-tax rules and applicable treaties can then affect the final Portuguese calculation.

Anexo J is not just about salary. It can cover foreign pensions, self-employment, rents, interest, dividends and capital gains. Portuguese residents must also identify qualifying foreign deposit/securities accounts in the relevant Anexo J section even where an account produced no income, under the applicable reporting rule. See AT — foreign income.

Property, investments and capital gains

Owning a home is not itself annual taxable income, but property can create other taxes and reporting events: IMI for ownership, rental income if the property is let, and potentially Category G capital gains when property is sold. Shares, funds, bonds, cryptoassets and other investments can also produce income or gains with different reporting/tax rules.

Do not assume that using a foreign broker, bank or crypto platform makes the income invisible or exempt. Cross-border financial information is extensively exchanged between tax authorities, and Portuguese residents have their own reporting obligations.

Deductions and e-Fatura

Many household deductions are based on invoices and information already communicated to AT. During the year, ask for invoices with your NIF where appropriate and monitor e-Fatura. Before filing, check the annual AT timetable for validating invoices and household information. If eligible expenses are missing or incorrect, the Modelo 3/Anexo H rules determine how they can be corrected or declared.

Couples and households

For married couples and people in a recognised união de facto, separate taxation is the general rule, with an option for joint taxation where the statutory conditions are met. Do not assume joint filing is always cheaper: compare the calculations presented by the Portal where available and make sure household/dependent information is correct.

Inheritance and gifts: not ordinary IRS income, but not “tax-free paperwork” either

Portugal does not simply charge ordinary IRS on an inheritance. Gratuitous transfers are principally dealt with under Imposto do Selo (Stamp Duty) rules. Spouses or recognised partners, descendants and ascendants benefit from an exemption from the 10% Stamp Duty applicable to many gratuitous transfers; other beneficiaries can be liable, depending on the asset and circumstances. There can still be notification/reporting obligations even where the beneficiary is exempt.

Inherited assets can also matter later for IRS—for example, when inherited property or investments are subsequently sold and a capital gain must be calculated. Cross-border estates add another layer because the location/type of assets and another country’s tax rules may also matter. See AT’s death and inheritance guidance and the current Stamp Duty Code.

Other personal taxes newcomers commonly meet

  • IMI: annual municipal property tax for owners.
  • IMT and Stamp Duty: commonly relevant when buying Portuguese real estate.
  • IUC: annual vehicle tax in relevant cases.
  • Stamp Duty: applies to specified acts/transactions, including certain gratuitous transfers.

These are separate taxes. They should not be described as extra “IRS rates”.

When the return stops being straightforward

Professional checking becomes more useful if you moved countries during the year, have foreign income or accounts, work remotely across borders, receive stock/options, have self-employed income, rent property, sold real estate or investments, use foreign brokers, have substantial crypto activity, received an inheritance/gift, have a foreign pension, own a foreign company, or are relying on a special tax regime or treaty position.

Who can help?

Start with AT for procedural questions. Portal das Finanças and e-balcão are the authoritative channels for your Portuguese tax account and official guidance. AT also provides telephone and in-person service.

If you want someone to prepare or check a more complex return, look for a Portuguese contabilista certificado. The Ordem dos Contabilistas Certificados (OCC) register lets you verify certified accountants. For tax litigation, formal appeals, complex international structuring or legal interpretation, consider a lawyer or appropriately qualified tax adviser.

For basic administrative help, a relocation/admin service may assist with Portal navigation and documents, but distinguish that from regulated accounting or legal advice. Never give an intermediary your Portal das Finanças credentials unless you understand the access arrangement; use lawful representation/authorisation mechanisms where appropriate.

A practical filing checklist

  1. Confirm whether you were resident, non-resident or partially resident for the relevant year.
  2. Check your household details and fiscal address.
  3. Review e-Fatura and the AT filing calendar.
  4. Collect Portuguese income/withholding information.
  5. Collect foreign income, foreign tax paid and foreign-account details where applicable.
  6. Check property, investment, pension, self-employment and capital-gain events.
  7. If offered IRS Automático, compare and verify it rather than blindly accepting it.
  8. Otherwise complete Modelo 3 and the necessary annexes.
  9. Run the Portal simulation where available, review the result, submit and save proof.
  10. Keep the supporting documents required under the applicable retention rules.

Useful official links

Last verified: 2 October 2026. This guide explains the general Portuguese personal-tax filing framework; the tax result depends on the taxpayer’s facts, the tax year, and where relevant the applicable international tax treaty.