Categories Royal Decree Royal Decree 28/2009 Issuing the Income Tax Law 2009/28 28/2009 Post author By admin Post date May 24, 2009 Arabic Consolidated Text Published in Official Gazette 888 issued on 1 June 2009. ← Royal Decree 29/2009 Approving the Petroleum Agreement between the Government of the Sultanate of Oman, Harvest Oman BV, and Oman Oil Company (Block 64) → The Income Tax Law (Consolidated)