Argentina: TIEAs signed with Andorra, the Bahamas, Costa Rica and San Marino

Andorra has announced that the income and capital tax treaty with Estonia came into force on 24 March 2026. Andorra and Estonia signed an income and capital tax treaty on 23 September 2025. This agreement aims to prevent double taxation on income

The Slovak Republic and Andorra are working toward their first bilateral income tax agreement, according to a statement from the Slovak Republic's Ministry of Foreign and European Affairs released on 31 March 2026. State Secretary Marek Eštok

Costa Rica has gazetted Resolution No. MH-DGT-RES-0010-2026 on 20 March 2026, which modifies the previous Resolution No. MH-DGT-RES-0055-2025 regarding the use of Form 270. This form is used for the "Monthly Summary Information Return of Clients,

The Argentine Senate has approved the amending protocol to the 1979 income and capital tax treaty with France on 18 March 2026. Signed on 6 December 2019, this marks the second amendment to the treaty. The agreement eliminates double taxation and

The Argentine Senate approved the new income and capital tax treaty with Austria on 18 March 2026. Signed on 6 December 2019, the agreement aims to eliminate double taxation and prevent tax evasion with respect to income and wealth. Senator

Luxembourg has ratified an amendment to the Convention with San Marino for the avoidance of double taxation on income and capital on 10 March 2026, updating the original agreement signed on 27 March 2006 and previously amended by the 2009 Rome