IRS · Annual Tax Return

Your tax return,
handled with rigour.

The IRS return is an annual obligation in Portugal, and when handled with the right care, a real opportunity to recover what is rightfully yours. We guarantee accurate filing, maximised deductions and full compliance with every legal deadline.

Start my registration
2 Mar e-Fatura validation
1 Apr – 30 Jun IRS filing window
15 – 60 days Typical refund time

Why Arco Fiscal

More than
meeting deadlines.

Filing an IRS return is not just about completing a form. It means understanding your personal and family situation, knowing exactly what you can deduct, and ensuring the final outcome is the most favourable possible for you, within the law.

01

Error-free
filing

Accurate completion that avoids future corrections, penalties and complications with the Tax Authority.

02

Maximised
deductions

We identify and apply every legal deduction you are entitled to (health, housing, education, pension plans and more).

03

Deadlines
guaranteed

We manage the tax calendar for you: from e-Fatura validation to final submission, so you never have to worry about dates.

04

Optimised
outcome

We work to make the final balance as favourable as the law allows, whether a higher refund or a lower tax bill.

Legal obligations

Does your return
apply to you?

Most taxpayers in Portugal are required to file an IRS return. And even when filing is not mandatory, it can be advantageous. We assess your situation and clarify everything before moving forward.

  • You are a tax resident in Portugal, regardless of where your income comes from
  • You are a non-resident with Portuguese-source income (rental, dividends or pensions)
  • You received employment income, professional fees, rental income or pensions during the year
  • Even without income, filing may be mandatory or beneficial, for joint taxation, dependants or tax benefits

Start here

Register.
We handle the rest.

Complete the form with your situation. Our team reviews the details and gets in touch within 24 hours to confirm the information and proceed with your IRS tax return.

Sensitive data

For security and GDPR reasons, details such as your NIF, IBAN and Tax Portal (Portal das Finanças) password are not requested in this form. They will be requested later through a secure channel.

Registration received.

We will review your situation and get in touch within the next 24 hours. Thank you for trusting your IRS return to Arco Fiscal.

01 · Personal Details
02 · Household
03 · Tax Regime
04 · Income Sources Select all categories that apply to your situation
  • Category A
  • Category B
  • Category D
  • Category E
  • Category F
  • Category G
  • Category H
  • Category J
05 · Deductions & Eligible Expenses Which types of expenses would you like to include for IRS deductions?
06 · Additional Information
07 · Consent & GDPR

Note on sensitive data

To complete your IRS return, we will later need: your NIF (yours, your spouse's and dependants', if applicable), IBAN (for refunds), Tax Portal (Portal das Finanças) password and dependants' details. For GDPR reasons, we do not collect this information in this form, it will be requested through a secure channel after we review your registration.

Recommendation: after the return is filed on your behalf, we strongly suggest changing your Tax Portal password as a good security practice.