USA: double taxation agreement, Article 20: Teachers
Replaced by new DTA, which applies in UK from 1st April 2003 for CT, 6th April 2003 for IT and 1st January 2004 for PRT. For US withholding taxes it applies from 1st May 2003 and for other US taxes from 1st January 2004. See DT19939K.
(1) A professor or teacher who visits one of the Contracting States for a period not exceeding two years for the purpose of teaching or engaging in research at a university, college or other recognised educational institution in that Contracting State and who was immediately before that visit a resident of the other Contracting State, shall be exempted from tax by the first-mentioned Contracting State on any remuneration for such teaching or research for a period not exceeding two years from the date he first visits that State for such purpose.
(2) The exemption provided in this Article may be applied by the Contracting State in which the teaching or research is performed to current payments to such professor or teacher in anticipation of fulfilment of the requirements of paragraph (1) or by way of withholding and refund, but in either case exemption shall be conditional upon fulfilment of the requirements of paragraph (1).
(3) This Article shall only apply to income from research if such research is undertaken by the professor or teacher in the public interest and not primarily for the benefit of some other private person or persons.