The gap between the world's richest and the rest of the world is still widening, with wealth still owned by a small minority, Oxfam said.
"Eighty-two percent of the wealth earned last year has flowed to the world's richest 1 per cent of the world's population, while half of the poor have seen little increase," it said.
Oxfam said that these figures reflect the failure of the economic system.
The organization blamed tax evasion, revenue from shareholders and executives, and there was no minimum wage guarantee for workers.
Oxfam has issued similar reports over the past five years. In 2017, Oxfam acknowledged that the wealth of eight of the world's richest people equates the wealth of half of the world's poor.
This year, the organization confirmed that the fortune of 42 of the richest people in the world is equal to the wealth of half the world's poor, and then revised to become the wealth of 61 percent of the richest wealth of the world's rich.
Oxfam said the revision and adjustment of the world's richest people was due to more accurate information, emphasizing the widening inequalities between the rich and the poor.