Nov 3 (Reuters) - Singapore Telecommunications Limited STEL.SI :
* Amended assessments amount to a$326 million, comprising primary tax of A$268 mln and interest of A$58 mln
* Does not agree with ATO's amended assessments
* Singapore telecommunications' Australian unit, Singapore Telecom Australia Investments Pty Limited has received amended tax assessments from Australian Tax Office
* Singtel Australia Investment , would be entitled to a corresponding refund of withholding tax, estimated at A$89 mln
* It is anticipated that STAI will pay a minimum amount of 50% of assessed primary tax by 28 december 2016 Source text for Eikon: ID:nSN9MLGLt Further company coverage: STEL.SI