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US Social Security Benefits: Taxation in Portugal

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US Social Security Benefits: Taxation in Portugal


With its warm climate, rich cultural heritage, and relatively low cost of living, Portugal has become an increasingly attractive destination for US expatriates. However, moving abroad brings its own set of financial considerations, particularly regarding tax obligations. One pressing concern for many American retirees is whether their US Social Security benefits will be subject to taxation by the Portuguese government.

Portugal, like many other countries, has a tax treaty with the United States designed to prevent double taxation and clarify the tax treatment of various types of income, including Social Security benefits. According to this treaty, US Social Security benefits received by residents of Portugal are only taxable in the United States. This arrangement provides significant relief to retirees and expatriates who might otherwise face dual tax liabilities on their retirement income.

The Non-Habitual Resident (NHR) tax regime in Portugal further enhances the attractiveness of relocating to this European nation. The NHR status offers a favorable tax environment for new residents, including exemptions and reduced tax rates on various forms of income. For US expatriates, understanding how to qualify for and benefit from the NHR regime can make a substantial difference in their financial well-being.

US and Portugal Taxation Agreement

The primary regulation governing the taxation of US Social Security benefits in Portugal is the United States-Portugal Tax Treaty. This treaty aims to prevent double taxation and fiscal evasion concerning taxes on income and capital. 

United States-Portugal Tax Treaty

  • Article 20 of the United States-Portugal Tax Treaty specifies that pensions and other similar remuneration paid to a resident of a Contracting State in consideration of past employment shall be taxable only in that State. This includes Social Security benefits, which means they are taxable only in the United States and not in Portugal.
  • IRS Publication 901 provides detailed information about tax treaties and confirms the taxation rules for Social Security benefits under the US-Portugal Tax Treaty. Article 20 is specifically the reference point for pension and Social Security taxation.

The Internal Revenue Service (IRS) and the Portuguese tax authority, Autoridade Tributária e Aduaneira (AT), both adhere to this treaty. 

Tax Obligations for US Expatriates in Portugal

While US Social Security benefits are exempt from Portuguese taxation, expatriates must still comply with several tax obligations in both countries:

  1. US Tax Obligations:
    • Filing Requirements: US citizens and residents must file a US tax return (Form 1040) annually, reporting their worldwide income, including Social Security benefits.
    • Foreign Bank Account Reporting (FBAR): Expatriates must comply with the Foreign Bank Account Report (FBAR) requirements if they have foreign financial accounts totaling more than $10,000 at any time during the year. Additionally, the Foreign Account Tax Compliance Act (FATCA) may require reporting of foreign assets on Form 8938 if the value exceeds certain thresholds.


  • All necessary documents should be gathered including Social Security statements and other income records.
  • Form 1040 must be completed and it must be ensured that all foreign income is accurately reported.
  • The return should be filed by the standard deadline (April 15) or an extension should be requested.

  1. Portuguese Tax Obligations:
    • Non-Habitual Resident (NHR) Regime: This special tax regime offers significant tax benefits for new residents. Under NHR, most foreign-source income, including US Social Security benefits, is exempt from Portuguese taxation for ten years
    • Annual Tax Return: Residents must file an annual Portuguese tax return (IRS Form), declaring their global income, although US Social Security benefits are exempt.


  • Registration process should be completed as a resident with the local tax office and the NHR regime should be applied for if eligible.
  • All income documentation must be collected including any income exempt under the NHR regime.
  • The Portuguese IRS Form should be filed by the stipulated deadlines (typically March 31 for the previous tax year).

Additional Considerations

When considering the taxation and management of US Social Security benefits for expatriates living in Portugal, several additional factors should be taken into account beyond the primary exemption from Portuguese taxation. These include understanding potential impacts on benefits, currency exchange issues and healthcare implications.

1. Potential Impacts on Social Security Benefits

Windfall Elimination Provision (WEP):

  • The Windfall Elimination Provision can reduce the Social Security benefits of expatriates who also receive a pension from work not covered by Social Security (e.g., foreign pension). This is something expatriates need to consider if they have worked both in the US and abroad.

Social Security Payments Abroad:

  • The ability to receive Social Security payments may vary depending on the country of residence. Portugal is one of the countries where US Social Security payments can be sent directly without any issues.

2. Currency Exchange Issues

Exchange Rate Fluctuations:

  • Social Security benefits are paid in US dollars, and expatriates must consider the impact of currency exchange rates when converting these benefits to euros. Fluctuations in exchange rates can affect the amount of benefit received in local currency.

Banking Options:

  • Setting up a bank account that offers favorable exchange rates and low fees for international transactions can help mitigate the financial impact of currency exchange.
  1. Healthcare Implications

Medicare Coverage:

  • US Medicare benefits do not typically cover healthcare services outside the United States. Expatriates in Portugal need to arrange for local health insurance coverage or take advantage of Portugal’s healthcare system.

Private Health Insurance:

  • Many expatriates opt for private health insurance to ensure comprehensive coverage in Portugal, supplementing the public healthcare services available.

Services Offered by Dimov Tax & CPA Services

Dimov Tax & CPA Services can assist clients in several ways to ensure compliance with both US and Portuguese tax laws:

  • Tax Planning: Advising on the most tax-efficient strategies to minimize liabilities in both countries.
  • Tax Return Preparation: Assisting with the preparation and filing of US and Portuguese tax returns, ensuring all treaty benefits are correctly applied.
  • FBAR and FATCA Compliance: Helping clients comply with US reporting requirements for foreign bank accounts and financial assets.
  • NHR Application Assistance: Guiding through the application process for the NHR regime to take full advantage of the tax benefits.
  • Ongoing Support: Providing year-round support for any tax-related issues or queries.


For US citizens living in Portugal, understanding the tax implications of receiving US Social Security benefits is crucial. While these benefits are not taxed by Portugal, expatriates must fulfill their tax obligations in both countries. Utilizing professional tax services like Dimov Tax & CPA Services can ensure compliance and optimize tax outcomes, providing peace of mind to expatriates enjoying their life abroad.

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