Double taxation treaties (DTTs) prevent the same income from being taxed twice in two countries. Here is how they work, what they cover, and how to use them strategically.
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Without a double taxation treaty, the same income can legally be taxed by two different countries — once at source and once in your country of residence. This happens more often than most entrepreneurs realize, and it costs real money.
FIXE GROUP reviews all relevant tax treaties between your country of residence and countries where you earn income, ensuring your structure takes maximum advantage of available exemptions and credits.
A double taxation treaty (DTT) is a bilateral agreement between two countries that determines which country has the primary right to tax specific types of income. DTTs typically cover employment income, business profits, dividends, interest, royalties, capital gains, and pensions. They either exempt income from tax in one country or provide a tax credit that offsets tax paid in the other. Over 3,000 tax treaties exist globally, based on the OECD Model Tax Convention, and understanding which ones apply to you can make a material difference in your effective tax rate.
Most tax treaties follow the OECD Model Tax Convention, which allocates taxing rights between the 'source country' (where income is earned) and the 'residence country' (where the recipient lives). The treaty establishes reduced withholding tax rates on cross-border dividends (often 5–15%), interest (often 10%), and royalties (often 10%), and sets out which country has primary taxing rights on business profits (typically the residence country, unless there is a Permanent Establishment in the source country).
ARTICLE 4 — RESIDENCE: Defines who is a 'resident' for treaty purposes and resolves dual-residency conflicts through the tie-breaker test (permanent home → habitual abode → nationality). ARTICLE 5 — PERMANENT ESTABLISHMENT: Defines when a non-resident business has a taxable presence in a country. If you have employees or a fixed place of business there, you may be creating a PE — with significant tax consequences. ARTICLE 7 — BUSINESS PROFITS: Business profits are taxed only in the residence country unless there is a PE in the source country. Crucial for freelancers and consultants working across borders. ARTICLE 10 — DIVIDENDS: Sets the maximum withholding tax rate a source country can apply on dividends paid to a resident of the treaty partner. Common rate: 5% for parent companies holding 25%+, 15% for other shareholders. ARTICLE 12 — ROYALTIES: Often reduces withholding to 5–10% (or zero under some treaties). Important for tech entrepreneurs with IP income.
You must claim treaty benefits — they are not automatic. Request a tax residency certificate from your country of residence and present it to the payer of income in the source country (your foreign client's bank or the company paying dividends). The payer then withholds at the reduced treaty rate instead of the domestic rate. If excess withholding has already occurred, you can claim a refund through the source country's tax authority.
Legal basis
OECD Model Tax Convention (2017 update) — Arts. 4, 5, 7, 10, 11, 12
Vienna Convention on the Law of Treaties (treaty interpretation)
OECD BEPS Action 6 (treaty abuse prevention, MLI instrument)
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