Paulson also said he has no current plans to ask Congress to make the second half of the $700 billion financial rescue fund available before the Bush administration leaves office on Jan. 20. But he added that the administration was prepared to move quickly, if necessary, to tap the extra resources.
In an interview on CNBC, Paulson said he believes the actions taken by financial authorities in the U.S. and other countries will allow all the systemically important institutions to remain viable.
The administration has obligated almost all of the first $350 billion in the financial rescue package approved by Congress on Oct. 3. There had been speculation that the Bush administration would ask for approval to begin using the second $350 billion in the bailout bill before leaving office.
Paulson said Tuesday he believed the government had a "lot of firepower" at its disposal currently, including the rescue program and multibillion-dollar loan programs being used by the Federal Reserve and the Federal Deposit Insurance Corp. to stabilize the banking system.
"I think if we have shown anything, we have shown that we know how to respond quickly to situations that come up," Paulson said. "I am focused on it, but I think we have got what we need now."
, the interest that banks charge each other, to a range of zero to 0.25 percent. That is down from the 1 percent target rate in effect since the last meeting in October. The aggressive move was greeted enthusiastically by Wall Street as the Dow Jones industrial average rose nearly 360 points.
The Fed's lending balance sheet, which was less than $1 trillion in September, is now expected to more than triple to $3 trillion, CBS News' Anthony Mason reports.
The Fed is acting "spender of last resort" MKP Partners economist Michael Darda told Mason.
Separately, the Treasury Department announced that it had provided an additional $2.45 billion in direct purchases of bank stock involving 28 more banks.
The new group of banks brings to 116 those that have received government support through stock purchases. The administration announced in mid-October that the stock purchases would be the major way it planned to use $250 billion of the rescue program. The amount distributed to the banks so far totals $167.76 billion, Treasury said.
In his interview, Paulson said a top priority for his remaining weeks in office was making sure the transition to the incoming administration of President-elect Barack Obama flows smoothing during what has turned out to be the country's most serious financial crisis since the 1930s.
The Bush administration is continuing to look at ways to deal with the mortgage crisis, Paulson said, but had not yet decided to implement a proposal to try to boost housing activity by buying bonds and lowering mortgage rates to 4.5 percent.
Paulson said he was spending a lot of time on the effort to fashion a government lifeline for the Detroit auto companies.
The companies that need government loans to avoid bankruptcy "will get the money as quickly as we can prudently do it," Paulson said. "We need to do it, but we need to do it right."
Paulson refused to speculate exactly when the support from the government's $700 billion rescue program might be awarded to General Motors Corp., Chrysler LLC or Ford Motor Co., but said the administration is working to make sure the taxpayer is protected and that the companies present a credible plan to achieve long-term viability.