"Charities and civic society groups made it clear in their submissions that only by devolving welfare wholesale could we make a transformational impact on poverty in Scotland. However, even if the welfare powers recommended by the Smith Commission are delivered, 85 percent of welfare will remain in the grip of Westminster," Whiteford said.
Scottish lawmakers have been blaming UK welfare policies for driving up poverty rates, specifically child deprivation levels, in the region.
Statistics produced earlier by housing charity Shelter revealed around 4,000 children in Scotland will be homeless over the Christmas period. The Child Poverty Action Group forecast that 100,000 children will be living in poverty by 2020.
In September, Scottish voters rejected independence for their nation in a referendum, with 55 percent of them preferring Scotland remain part of the United Kingdom.