Singapore legislation
Section 4
of Diplomatic Privileges (Commonwealth Countries and Republic of Ireland) Act
Section 4
Remission of taxes, duties, and fees
The President may provide that any tax, charge, duty or fee, imposed or collected under any written law in force in Singapore or any part thereof by the Government or by a public authority, and payable by the government of any country to which this Act applies or by a Commonwealth officer or an employee of such a government, shall be remitted when, in the opinion of the President, substantially similar treatment is accorded or would be accorded by that government to the Government of Singapore or to its officers or employees corresponding in status to the officers and employees of that country.