Talks between the Northern Ireland political parties are continuing at Stormont.
Politicians in Northern Ireland have negotiated through the night in an attempt to agree on a range of issues affecting power-sharing.
The government has set Tuesday morning as a deadline for agreement.
Northern Ireland Secretary Theresa Villiers, who set a deadline of Tuesday morning for a deal, is due to convene a formal meeting.
The negotiations on flags, parades, the past and welfare reform have been going on for 11 weeks. Earlier, the secretary of state said a deal was possible.
Details of the cross-party discussions are yet to emerge, and it is not clear whether a deal will be reached.
Details are emerging about the £1.5bn financial offer made by the government to the parties.
The negotiations on flags, parades and welfare reform have lasted 11 weeks.
It is understood £150m has been offered to help fund new agencies dealing with the legacy of the Troubles - less than the £200m the Stormont parties had originally asked for, but significantly more than the £40m David Cameron offered earlier this month.
The five Northern Ireland Executive parties and the UK and Irish governments have been involved in the talks at Stormont Castle.
Loans of £700m have been offered to pay for a programme of civil service redundancies, £100m less than asked for.
Apart from more long-standing disputes, the terms of a new financial package proposed by UK Prime Minister David Cameron have been a focus of the talks.
It is understood that funding for infrastructure projects has been offered of £350m, £50m more than requested by the executive, but Stormont sources suggested the money was a loan not a grant.
Last week the five executive parties asked the UK government for £2bn in loans and extra funding over a 10-year period. The government later made a £1.5bn offer.
Earlier, First Minister Peter Robinson said he believed that there was "real money on the table" from Westminster.
First Minister Peter Robinson said he believed that there was "real money on the table" from Westminster, but Ulster Unionist leader Mike Nesbitt said: "I have to caution that most of that is loans."
"There is a real chance to do the job, it does require all of us to apply ourselves and all of us to stretch ourselves," he said.
Sinn Féin's Conor Murphy said progress had been made but the "devil was in the detail".
Sinn Féin's Conor Murphy said progress had been made but the "devil was in the detail".
The parties are considering Downing Street's response to their request for additional funds.
The five parties said they were considering details of the proposed financial package, though some warned there were still other issues to be resolved.
Northern Ireland's five executive parties have asked for about £2bn in loans and cash over a 10-year period.
Ms Villiers said on Monday that the government's financial offer had been "positive and generous", but also reflected the UK's "extremely difficult fiscal situation".
In relation to welfare penalties, Stormont sources indicate that they will not be waived with the government citing that to do so would be unfair to other areas of the UK.
She said it "had to be fair to all parts of the United Kingdom".
However some negotiators are saying that this issue is still not resolved. Last week the Stormont parties had requested that £214m in fines should be written off.
Northern Ireland is having to pay penalties to the UK Treasury for not implementing welfare reforms passed by Westminster in February 2013.
'Marathon runner'
The "fines" - the amount the benefits budget in Northern Ireland should have fallen if welfare reforms had been implemented - amount to £214m. The Stormont parties want this written off.
Speaking at lunch-time on Monday, Mr Robinson said he felt "like a marathon runner who, at the end of 20 odd miles, has the stadium in sight".
"I consider some progress has been made. It is down to the wire. There is a short period of time left to us to reach conclusions. But we are determined as this is in the benefit of Northern Ireland," he said.
"There is some real money in the present proposal. The offer is an improved offer, but we do need clarification."
Mr Murphy, Sinn Féin, said progress had been made and that the party had been in contact with David Cameron over the weekend.
He and party colleague Martin McGuinness received the latest paper at noon, he said, and they would examine it closely.
"There are gaps to be closed, there is a sense between the parties and governments that that work needs to be done today," he said.
"The five parties are determined to secure the best financial package available."
Ulster Unionist leader Mike Nesbitt said it was still far too complex to make a call on the talks.
"We still have all the legacy issues to discuss," he said.
"The British government's paper on finance has a headline of £1.5bn. I have to caution that most of that is loans.
"We have to be very careful about how we can repay those loans. We can't leave a huge mountain of debt for our children and our grandchildren."
Earlier on Monday, Northern Ireland Secretary Theresa Villiers said the government's response was "positive and generous", but also reflected the UK's "extremely difficult fiscal situation".
She said Downing Street's financial offer also "had to be fair to all parts of the United Kingdom".
