A tax treaty, also known as double taxation agreement, is an agreement between two or more countries to prevent double taxation of the same income. It sets out the rules when individuals or businesses invest in a foreign country and should determine which country should tax the investment income, both foreign and resident incomes.

This treaty, which is negotiated and signed by both states, facilitates mutual cooperation and tax coordination between two countries. It usually contains various sections, including definition of terms and double taxation reliefs, as well as other topics such as exchange of information, prevention of fiscal avoidance and in some cases, withdrawal from the treaty.

One protection provided by tax treaties is the Agreement on Exchange of CbC Reports, which is designed to protect taxpayers from being subject to the burden of double taxation. The Agreement ensures that reports on income earned from global operations and international transactions are exchanged annually between countries. In some cases, the Agreement allows for the exchange of confidential tax information.

Furthermore, countries may also benefit from double tax reliefs granted as part of a tax treaty. In a double taxation relief, the same income will not be taxed both in the home country of the investor and the host country. For example, if a resident of A country invests in B country, the double taxation relief would ensure that they are only taxed once. This can be achieved by allowing relief from foreign taxes on income from investments in the host country, and a credit for foreign taxes paid in the host country applied against the domestic tax of the home country.

In addition, a tax treaty may reduce withholding taxes on dividend, interest, and royalty payments. This reduces the amount of taxes paid by the reciprocal resident making the investment, which in turn allows them to have access to a larger pool of capital which can be invested in the country that they invest in.

In conclusion, tax treaties help to protect individuals and businesses against double taxation and reduce their overall tax burden. By providing rules that ensure that income is only taxed once, and by offering double taxation reliefs and withholding tax reliefs, tax treaties foster tax cooperation between countries and promote an environment of mutual respect and global investment.