Termination of tax treaty: diplomatic notice after five years triggers different effective dates for Brazil and India. Either Contracting State may terminate the Convention by written notice through diplomatic channels after five years from entry into force, provided such notice is given on or before 30 June of any calendar year. On termination, the Convention ceases in Brazil for withholding taxes as to amounts paid or credited on or after 1 January of the calendar year following notice, and for other taxes for taxable years beginning on or after that 1 January; in India the Convention ceases for income arising in any previous year beginning on or after 1 April immediately following the calendar year in which notice is given.