It will be concerned with getting the best results from the hundred of millions of dollars being spent on social service delivery, he says.
"When you don't have a whole lot of money to spend, you have to look pretty hard at using what you have to make a difference."
Mr English said the poverty committee would not be starting cold, it would expand the role of an existing ministerial committee.
The committee would provide oversight for welfare and housing reforms and work in the youth justice sector which had built up momentum.
It would provide guidance for developments in whanau ora and for a grassroots social sector trial taking place in six centres - Kawerau, Tokoroa, Te Kuiti, Taumarunui, Levin, and Gore - which the Government quietly began in August without any formal statement by a minister.
The trials under the management of a non-government organisation or individual manager will run for two years and are designed to try to find out what works and what does not in terms of interventions to help young people in truancy, unemployment, getting off drugs or whatever their problem is.
"We think the way to deal with poverty is opportunity," Mr English said.
"Too much Government spending is well-intentioned but unfocused. We want to get it tied down to achieving results."
The establishment of a high-powered ministerial committee on poverty was set out in the confidence and supply agreement between National and the Maori Party on Sunday.
It will comprise Mr English and Whanau Ora Minister Tariana Turia, as well the ministers of education, health, housing, Maori affairs and social development.
The committee will issue its first report mid-2012 and issue updates no later than every six months.
New Labour leader David Shearer has called on National to make it a cross-party committee which Prime Minister John Key has rejected.
Mr English said it would be a working committee rather than an advisory one.
"We are not looking at the possibility of large-scale cash injections that are going to move whole groups of people over some measure. That's not the recipe because we don't have the cash to do that."
He believed the public would not tolerate handing more money to low-income families and beneficiaries - or at least not until everything else had been tried.
