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Attributes of a Double Taxation Treaty

This blog post will explore the world of Double Taxation Treaties (DTTs), examining their importance, structure, and intricacies. We will then pivot toward the structure of the treaties signed by the Sultanate of Oman, concluding with a practical example that showcases how these agreements apply in the real world.

One of the most signed treaties by the Sultanate of Oman is a DTT, also known as a Double Taxation Agreement (DTA). It is a bilateral agreement between two countries that aims to prevent the same income from being taxed by both jurisdictions, thus facilitating the flow of foreign investment. A DTT clearly outlines which country has the primary taxing rights, this clear structure and the elimination of the burden of double taxation are great advantages to foreign investors.

It is very rare for DTTs to have identical provisions, as the process of signing one involves starting with a model agreement and involves a cycle of negotiations between the governments regarding priority over taxing rights and the exact anti-abuse policies they want to implement. For example, a principal purpose test is a provision that can deny the benefits of the treaty if the true purpose was only to exploit those benefits. Model agreements are published by large organisations like the UN and the OECD, and many countries follow the models with small tweaks to better suit their interests. A provision mandating tax withholding by parties in the Sultanate is not uncommon in treaties it signs.

The Sultanate has signed at least 40 DTTs with countries across the globe, the most recent one being signed with Bahrain earlier this year and recently ratified by Royal Decree 62/2025. While it might seem unusual that Oman has signed DTTs with only two countries in the GCC, one of its closest groups of allies, but this is due to the relatively new implementation of tax systems in GCC countries, and it is very likely that we will see such treaties emerge with the complete implementation of tax systems in GCC countries.

In a practical example of the application of a DTT, if a consultant based in Spain was hired for a project by a company based in Oman, under article 52 of the Omani Income Tax Law, the Omani company should withhold tax in connection with any payment made to the Spanish consultant. However, to avoid double taxing the same revenue twice, the DTT between Oman and Spain stipulates in article 14 that income derived by such a consultant can only be taxed in the country of residence and not the other countries, which eliminates the requirement of withholding tax in Oman, and therefore reduces the tax liability of this consultant when doing work in Oman.

Double Taxation Treaties are essential tools in international tax law. They provide clear guidelines for investors and governments on their rights and responsibilities—clarity that is crucial when dealing with multiple tax jurisdictions.

You can use Decree search to locate DTTs signed by the Omani government, and you can view the most recent one signed between Oman and Bahrain on the link below: