As previously reported, Oman has published Ministerial Decision 53/2021 in the Official Gazette, which contains implementing regulations for the Value Added Tax Law. One of the key elements of the regulations in the establishment of the standard VAT periods, which have been set as the calendar quarters ending 31 March, 30 June, 30 September, and 31 December. With the VAT periods set, taxable persons are required to submit VAT returns and pay the VAT due within 30 days following the end of each VAT period. The return is to be submitted electronically in a form to be prescribed by the Oman Tax Authority. Where input VAT exceeds the VAT due, a refund may be claimed.