Following bilateral discussions on fiscal and fiscal policy, an agreement between Switzerland and Turkey was signed in Bern to abolish double taxation of income tax. The agreement was ratified by Switzerland on 25 August 2010. The agreement will enter into force after ratification by both countries. The protocol also contains new measures relating to the taxation of pensions and the deduction of pension contributions. In the future, lump sum pension payments can only be taxed by the state in which they are created. In addition, in certain circumstances, pension contributions paid in one contracting state are tax deductible in the other contracting state. The agreement was signed on May 21, 2010 and came into force on January 1, 2012. In addition, on 29 September 2008, the two countries confirmed that an agreement in principle had been reached on the Free Trade and Economic Partnership Agreement (EPA). Switzerland and Turkey originally signed a DBA on 22 May 2008. This did not come into force, however, since the Federal Council had in the meantime adopted the new policy of mutual assistance according to the international standard.

This amendment was incorporated into the agreement and approved by Parliament in both countries. The social security agreements have been concluded with the following countries: the Federal Council`s decision is implemented within the framework of bilateral double taxation conventions. Greater information exchange will only have a practical effect if the renegotiated agreements come into force. In addition, adjustments must be made to the agreement with the EU on the taxation of savings. The protocol became necessary to appease the European Commission, which had considered that the agreement could be contrary to the European Treaty. By threatening to refer the matter to the European Court of Justice, the United Kingdom and Switzerland have agreed that account holders who have already paid the 35% withholding tax due under the European Savings Tax will be subject to a final withholding tax of 13% in order to reduce the tax debt on interest payments. In October 2010, an agreement was signed to begin negotiations for an agreement to tax unreported British accounts in Switzerland and other information regarding tax and banking information shared between the two states. The agreement will strengthen, among other things, cross-border tax cooperation and improve banks` access to the market. Negotiations began in early 2011 and the agreement was signed on 6, 2011. On March 20, 2012, a protocol was signed to clarify outstanding issues. The protocol contains some amendments to the existing double taxation agreement of December 8, 1977. The main changes are the removal of the withholding tax on dividends, in which the actual beneficiary of the dividends has a significant interest in the payer or is a pension plan.

Turkey generally uses the credit method to eliminate double taxation and Switzerland uses a change in credit and exemption methods.