"Happy New Year," Biden, who became the Democratic point man in the talks, told reporters. "Did you think we would be here New Year's Eve?"
But the House of Representatives went home long before midnight, meaning nothing will get through Congress before the combination of tax increases and spending cuts Congress has been scrambling to head off starts to kick in.
A source familiar with the deal told CNN that the Senate proposal would put off the cuts for two months and keep the expiring Bush-era tax cuts for individuals earning less than $400,000 or couples earning less than $450,000. Taxes on inherited estates over $5 million will go up, and that exemption will be indexed for inflation.
Biden had been in negotiations with Senate Minority Leader Mitch McConnell, R-Kentucky, since Sunday afternoon. Senate Majority Leader Harry Reid and House Minority Leader Nancy Pelosi, both Democrats, agreed to the plan in calls with President Barack Obama, a Democratic source said Monday night.
Economists warn the one-two punch of tax increases and spending cuts could push the U.S. economy back into recession and drive unemployment back over 9% by the end of 2013. Obama had chided lawmakers earlier Monday and warned that battles over spending still loomed, hitting a nerve among several Republicans in the Senate.
"They are close, but they're not there yet," Obama said. "And one thing we can count on with respect to this Congress is that if there is even one second left before you have to do what you're supposed to do, they will use that last second."