INSS Contributions and US Tax Implications
Updated April 12, 2026
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Quick answer
Brazilian expats paying INSS contributions may avoid double Social Security taxation through the US-Brazil Totalization Agreement and can potentially claim a foreign tax credit for INSS on their US return. A Certificate of Coverage is required for exemption from US Social Security taxes.
The Direct Answer
If you are a Brazilian living in the US and still paying INSS contributions, the US-Brazil Totalization Agreement can prevent you from paying Social Security taxes to both countries simultaneously. In addition, depending on your situation, INSS contributions may qualify for a foreign tax credit on your US return. The rules depend on your employment type, residency status, and the nature of your contributions.
What Is INSS?
INSS (Instituto Nacional do Seguro Social) is Brazil's Social Security system. Contributions fund retirement benefits, disability coverage, and other social protections. Workers in Brazil contribute based on their salary or self-employment income.
For Brazilian expats in the US, INSS comes up in two main contexts:
- Continuing INSS contributions while living and working in the US (common for temporary assignees or self-employed Brazilians maintaining coverage)
- INSS contributions from past Brazilian employment that affect your US tax calculations
The US-Brazil Totalization Agreement
The United States and Brazil signed a Social Security Totalization Agreement that entered into force on October 1, 2018. This agreement does two important things:
- Prevents dual Social Security taxation - workers cannot be required to contribute to both US Social Security/Medicare and Brazilian INSS on the same income
- Helps workers qualify for benefits - periods of coverage in both countries can be combined to meet minimum eligibility requirements for retirement benefits
Who It Applies To
The totalization agreement primarily covers workers temporarily assigned from one country to the other. Key rules:
- A Brazilian employee sent to work in the US by a Brazilian employer for up to 5 years remains subject only to INSS (not US Social Security taxes)
- A US employee sent to work in Brazil remains subject only to US Social Security taxes
- Self-employed individuals follow similar rules based on their country of residence
Certificate of Coverage
To claim the exemption from US Social Security and Medicare taxes, you need a Certificate of Coverage issued by the INSS. This document proves you are covered by the Brazilian system and should be presented to your US employer so they do not withhold Social Security and Medicare taxes from your wages.
Without this certificate, your US employer is required to withhold Social Security and Medicare taxes regardless of your INSS contributions.
Reporting INSS on Your US Tax Return
As a Foreign Tax Credit
INSS contributions paid by a Brazilian worker may qualify for the foreign tax credit on Form 1116, subject to limitations:
- The contribution must be a compulsory payment to a foreign government
- It must be an income-based levy, not merely a social insurance premium
- Employee INSS contributions on wages are generally considered income taxes for credit purposes
- Employer INSS contributions paid on your behalf are typically not creditable for you
The creditability of INSS is a nuanced area. The IRS has not issued definitive guidance covering all INSS scenarios, and outcomes can vary by taxpayer type (employee vs. self-employed) and contribution structure.
As a Deduction
If you cannot claim a foreign tax credit, you may be able to deduct foreign taxes paid as an itemized deduction on Schedule A. However, the deduction provides less tax benefit than the credit for most taxpayers.
INSS vs. US Social Security: Comparison
| Feature | INSS (Brazil) | Social Security (US) |
|---|---|---|
| Employee contribution rate | 7.5% to 14% (progressive) | 6.2% (wage base limit) |
| Medicare equivalent | Included in INSS | 1.45% separate |
| Self-employed rate | 20% (standard) | 15.3% (SE tax) |
| Totalization agreement | Yes (since 2018) | Yes (since 2018) |
Common Mistakes
Ignoring the Certificate of Coverage requirement. Many Brazilians on temporary US assignments continue paying INSS but do not obtain the Certificate of Coverage, so their US employer also withholds Social Security taxes. This results in overpayment that can be difficult to recover.
Assuming INSS is always creditable. The foreign tax credit rules are specific. Not every INSS payment qualifies, and claiming a credit without analyzing the rules can lead to errors on your return.
Forgetting to include INSS in the foreign tax credit calculation. Conversely, some Brazilians who do qualify for the credit miss it entirely, leaving money on the table.
Know Your Exact Obligations
Your INSS situation depends on your visa, your employer type, whether you have a Certificate of Coverage, and how your contributions were structured. Use the free 5-minute diagnostic to understand which forms apply to your specific situation.
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Start Free DiagnosticCommon Questions
Not necessarily. The US-Brazil Totalization Agreement, in effect since 2018, prevents most workers from paying Social Security taxes to both countries on the same income. You need a Certificate of Coverage from the INSS to be exempt from US Social Security and Medicare taxes.
In some situations, yes. INSS contributions that are compulsory and paid to a foreign government may qualify for a foreign tax credit on Form 1116. However, INSS contributions made as an employee (where the employer also contributes) are often treated as a social insurance tax rather than an income tax, which limits creditability. A tax professional should evaluate your specific case.
A Certificate of Coverage (or Certificado de Cobertura) is issued by Brazil's INSS and certifies that a worker is covered by the Brazilian Social Security system. It exempts you from paying US Social Security and Medicare taxes on that same income. You can request it through the INSS or your employer's HR department when on a temporary assignment in the US.
This article is educational information only. It is not tax, legal, or financial advice. For decisions specific to your situation, consult a licensed CPA or Enrolled Agent.