By Anne FlahertyWASHINGTON -- Republicans have to stop using "political math" and say how much they are willing to raise tax rates on the wealthiest 2% of Americans and then specify the spending cuts they want, Treasury Secretary Tim Geithner said Sunday. Just four weeks from the proverbial "fiscal cliff," House Speaker John Boehner countered that Republicans have a plan for providing as much as $800 billion in new government revenue over the next decade and would consider the elimination of tax deductions on high-income earners. But when pressed on "Fox News Sunday" for precise details, the Ohio Republican declined to say. There are "a lot of options in terms of how to get there," Boehner said. Both Boehner's and Geithner's latest remarks indicate it could be some time before serious negotiations begin between the White House and Republicans on how to avert economic calamity expected in less than a month when President George W. Bush-era tax cuts expire and automatic, across-the-board spending cuts kick in. Last week, the White House delivered to Capitol Hill its opening plan: $1.6 trillion in higher taxes over a decade, hundreds of billions of dollars in new spending, a possible extension of the temporary Social Security payroll tax cut and enhancing the president's power to raise the national debt limit. In exchange, the president would back $600 billion in spending cuts, including $350 billion from Medicare and other health programs. But he also wants $200 billion in new spending for jobless benefits, public works projects and aid for struggling homeowners. His proposal for raising the ceiling on government borrowing would make it virtually impossible for Congress to block him. Republicans said they responded in closed-door meetings with laughter and disbelief. "I was just flabbergasted," Boehner said. "I looked at him (Geithner) and I said, 'You can't be serious.'" The speaker, noting the short time between the Nov. 6 election and the new year, said time is being lost "with this nonsense."