Individual Tax Declaration

April 15 is Tax Day! Individual income tax returns are due to be submitted to USA federal government

Who Needs to File an IRS Return in Portugal?

Filing a personal income tax return (IRS) in Portugal can be a complex task, especially if you have income from multiple sources, live abroad, or benefit from special tax regimes. At Frontier Tax Solutions, we offer precise, personalised support to ensure your tax obligations are met with clarity, compliance, and peace of mind.

Whether you’re declaring income earned in Portugal, abroad, or both, we help you navigate the process, optimise your position, and avoid costly errors or penalties. Our team combines fiscal expertise with international insight, so you can file with confidence.

What We Do

IRS Preparation & Filing

We prepare and submit your Portuguese income tax return, ensuring accuracy, full compliance, and proper use of available deductions — whether your income is from Portugal, abroad, or both.

Foreign Income & Double Taxation Relief

We help you declare foreign income correctly and apply the relevant tax treaties to avoid double taxation. From pensions and remote work to dividends and rental income, we ensure you don’t overpay.

Special Regimes & Tax Benefits

We assist with the application of special tax regimes like the Non-Habitual Resident (NHR) or IFICI, ensuring you meet eligibility criteria and benefit from all available exemptions.

IRS Review & Second Opinion

Unhappy with the outcome of your IRS return? We analyse your previously submitted declaration, search for missed deductions or benefits, and assess whether a correction could reduce your tax liability or increase your refund.

Rectifications & Voluntary Corrections

If your IRS declaration was submitted with errors or missing information, we prepare and submit the necessary amendments — quickly, discreetly, and in your best interest.

Why Work with Us

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Full Bilingual Support

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International Tax Insight

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100% Confidential

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