Oman Implementation VAT as of April 1, 2021: Tax authorities issued first set of VAT guidelines 13 October 2020208 views1 min read Source Tax authorities See also Oman to implement 5 per cent VAT as of April1, 2021 Implementation / Reform Oman introduces 5% VAT Rate to stabilize falling GDP Oman Tax Authority issued guidelines and FAQ’s on its VAT Tax Payer Portal