Double Taxation Agreements (DTAs) are bilateral treaties designed to eliminate double taxation, prevent tax evasion, and foster cross-border investment.
Model Tax Conventions
To ensure consistency, global DTAs are generally modeled after two international frameworks:
  • The OECD Model Tax Convention: Developed by the Organisation for Economic Co-operation and Development. It favors the Residence Principle, allocating more taxing rights to the capital-exporting (developed) country where the investor resides.
  • The UN Model Double Taxation Convention: Developed by the United Nations. It grants wider taxing rights to the Source Country (developing nations), recognizing that countries where economic activity physically occurs should retain a greater share of the tax revenue.
                        +----------------------------+

                        |  Model Tax Conventions     |
                        +--------------+-------------+
                                       |
              +------------------------+------------------------+

              |                                                 |
   +----------v----------+                           +----------v----------+

   |     OECD Model      |                           |      UN Model       |
   +----------+----------+                           +----------+----------+

              |                                                 |
   * Favors Residence Principle                      * Favors Source Principle
   * Benefits Capital-Exporting Nations              * Benefits Developing Nations
   * Limits withholding taxes at source              * Retains higher source taxation

Key Structure and Clauses of a Standard DTA
A typical DTA contains standardized clauses that define how specific income streams are handled:
  • Business Profits: Taxed only in the residence state unless the business operates through a permanent establishment in the source state.
  • Passive Income (Dividends, Interest, Royalties): The source country typically agrees to cap its withholding tax at a reduced treaty rate (e.g., lowering standard withholding tax from 20% to 10%).
  • Tie-Breaker Rules: Provisions used to resolve cases where an individual or company qualifies as a tax resident in both countries simultaneously.

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