British Chancellor Rishi Sunak said Stormont should now focus on “delivering to homes and businesses across Northern Ireland” once power sharing is restored.
Mr Sunak, who began his visit to Northern Ireland to mark the return of devolved government, said the £3.3bn funding package for the region would lead to sustainable public services.
These schemes were reinstated following an agreement between Mr Sunak’s government and the DUP to allay union members’ concerns about post-Brexit trade deals.
The British government on Thursday fast-tracked two bills included in the deal through the House of Commons, paving the way for Parliament to resume on Saturday.
The British Prime Minister will travel to Stormont on Monday to meet the leaders of the new executive government, Michelle O’Neill and Emma Little-Pengery.
Leo Varadkar will also attend a series of meetings at Stormont.
Sinn Féin’s Ms O’Neill made history on Saturday when she became Northern Ireland’s first nationalist prime minister as Parliament returned from a two-year stint in cold storage.
Mr Sunak will carry out a number of community activities and meet with people involved in public services during his visit.
On Sunday he visited the headquarters of the Northern Ireland Air Ambulance Service in County Antrim.
The British Prime Minister said: “It’s great to be back tonight in Northern Ireland, a special part of the United Kingdom.”
“Over the past few days, we have made great strides towards a brighter future for the people here.
“Yesterday, Parliament met for the first time in two years. The Executive is scheduled to meet tomorrow.
“Tonight I am meeting with the ambulance volunteers and crew.
“It is these people and services, and many more, that the Executive can now focus on delivering to families and businesses across Northern Ireland.
“And the new deal we have agreed will give them both the funding and the power to do just that.”
Stormont’s party has said it will press Mr Sunak for more funding to ease pressure on Northern Ireland’s public services.
But the British Prime Minister said the British government’s offer represented a “generous and fair settlement”.
Furthermore, he added: “And importantly, it is sustainable.
“It’s about ensuring Northern Ireland’s finances are sustainable in the long term. I think this approach that we’ve taken will really benefit everyone here.
“And now that we have government back up and running, it is right for people to get their local politicians to focus on their priorities, starting with public services.
“For far too long we haven’t had decentralized government up and running here. But now we have it and they can focus on providing for everyone.”
Mr Sunak was asked about Mr O’Neill’s comments predicting there could be a border inquiry into a united Ireland within the next 10 years.
He said: “Clearly everyone is adhering to the Belfast Good Friday Agreement.
“But I think we can all also agree that now is the time to focus on tackling the day-to-day issues that matter to the people, families and businesses of Northern Ireland.
“We haven’t had a devolved government here for two years. It’s time to focus on things like public services. That’s what everyone would expect.
“In fact, everyone I spoke to tonight said that’s exactly what they want from the government now that it’s back on its feet.
“Our contract ensures that public authorities have the authority and funding they need to deliver for the people.”
The new executive board will hold its first meeting on Monday.
Mr O’Neill told the PA news agency there was an urgent need to start tackling public sector funding issues.
She said:
“This place has been underfunded for public services for more than a decade because of the Tories in London, but we can do much better than that.
“I think this is a battle that we all have to fight together. The whole administration is working to establish the right funding model so that we can actually deliver better public services and invest in public sector workers. I think we need to work together.”