WASHINGTON (AP) — The contours of a deal to avert the 'fiscal cliff' emerged Monday, with Democrats and Republicans agreeing to raise tax rates on family income over $450,000 a year, increase the estate tax rate and extend unemployment benefits for one year, officials familiar with the negotiations said.

But with a midnight deadline rapidly approaching, both sides were at an impasse over whether to put off automatic, across-the-board spending cuts set to take effect on Jan. 1, and if so, how to pay for that. Democrats want to put off the cuts for one year and offset the so-called sequester with unspecified revenue.