When it comes to international taxation, individuals and businesses operating across borders often face the challenge of being taxed by both their home country and their host country.

To prevent this situation, countries enter into Double Taxation Agreements (DTAs) to ensure that income is not taxed twice. The Double Taxation Agreement between the UK and Portugal is designed to avoid the situation where a person or business pays taxes on the same income in both countries.
Key Features of the UK-Portugal Double Taxation Agreement
The UK-Portugal DTA is designed to allocate taxing rights over various types of income, including income from employment, pensions, dividends, interest, and royalties, among others. Here’s how it works:
Tax Residency:
The DTA defines tax residency, which determines which country has the primary right to tax an individual or entity. If you're a resident in one country and earn income in the other, the agreement specifies which country can tax that income.
If you are considered a resident of both countries (e.g., you have a home and economic ties in both), the DTA provides tie-breaker rules to determine your primary residency.
Relief from Double Taxation:
Tax Credits: If you are taxed in both countries on the same income, you can usually claim a credit for the tax paid in the other country, reducing your overall tax burden.
Exemption: Some types of income, such as certain pensions or social security benefits, might be exempt from tax in one of the countries.
Types of Income Covered:
Income from Employment: Generally, income from employment will be taxed only in the country of residence, unless the employment is exercised in the other country.
Pensions: Pensions are taxed in the country of residence, but may also be taxed in the country from which the pension is paid.
Dividends, Interest, and Royalties: These types of income may be subject to reduced tax rates or exemptions under the DTA.
Tax Rates Under the DTA
The tax rates for income types under the Double Taxation Agreement between the UK and Portugal can differ. Below is a table summarizing key tax rates:
Type of Income | Tax Rate in Portugal | Tax Rate in the UK | Reduced Rate under DTA |
Income from Employment | Taxed in the country of residence | Taxed in the country of residence | Typically taxed in the country of residence |
Dividends | 28% (if not exempt) | 0-15% (depending on circumstances) | Typically reduced to 5%-15% depending on ownership |
Interest | 28% (if not exempt) | 20% | Typically reduced to 10% |
Royalties | 28% (if not exempt) | 20% | Typically reduced to 10% |
Pensions | Taxed in the country of residence | Taxed in the country of residence | Typically taxed only in the country of residence |
Note: The above tax rates can vary depending on specific circumstances, such as the amount of income or specific provisions of the DTA. It is important to consult with a tax advisor to understand how the agreement applies to your situation.
Claim a Foreign Tax Credit: If you've paid tax on the same income in both countries, you may be able to claim a credit for the tax paid in the other country.
Claim an Exemption: In some cases, income might be exempt from tax in one of the countries under the DTA, such as certain pensions or income from employment.
Request a Refund: If you’ve been overtaxed due to incorrect application of the DTA, you may be eligible to claim a refund from one of the countries.
Conclusion
The Double Taxation Agreement between the UK and Portugal ensures that individuals and businesses do not face double taxation on the same income. By understanding the key provisions and tax rates under this agreement, you can better plan your finances and avoid paying more tax than necessary.
Need Help Navigating the UK-Portugal Tax Landscape?

At INLIS Consulting, we specialize in helping clients understand complex tax agreements like the Double Taxation Agreement between the UK and Portugal. Whether you’re an individual or a business, our expert tax consultants are here to ensure that you’re complying with tax laws and minimizing your tax liabilities.
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