Oman, Luxembourg Ink Agreement for Avoidance of Double Taxation Luxembourg, 17 Oct (ONA) --- The Sultanate of Oman and theGrand Duchy of Luxembourg today signed an agreement for the avoidance of double taxation. The agreement pertains to taxes on income and the prevention of tax evasion. The agreement provides legal protection for investors, to spare them the imposition of double taxes. It also regulates the mechanisms of tax application in a manner that enhances ...