The Government Superannuation Fund Authority (the "Authority") requires a suitably qualified and resourced supplier to provide tax advisory services. This service includes preparation and filing of the Government Superannuation Funds’ Income Tax return (including calculation of all associated inclusions), review of GST returns, quarterly review of internally prepared tax calculations, advice on provisional and residual tax payments, liaison with Inland Revenue on annual risk reviews, general tax advice (including on tax documentation for overseas markets) and reviews of investment managers.