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The White House said the deep deficit is the result of the economic hole Mr. Obama found when he took office, but that with the economy still slumping, more stimulus will be needed.

Mr. Obama is planning a speech in September to lay out tax cuts and spending initiatives he says can boost the economy, even as he calls on lawmakers to cut other spending and raise other taxes.

“There is a lot more that we have to do,” spokesman Josh Earnest told reporters covering the president, who is vacationing in New England. “That’s why one of the things that the president’s going to talk about next month, in addition to some of these new ideas about creating jobs, is actually a suggestion, some ideas for how the supercommittee can go beyond their $1.5 trillion deficit reduction mandate to actually do even more to address the longer-term fiscal challenges that are facing the country.”

This year’s deficit numbers were helped by higher-than-expected income tax revenue. In 2011, revenue will reach $2.3 trillion, while spending, measured by outlays, will be $3.6 trillion.

CBO’s report contains a number of other judgments on the economy, government programs and Congress‘ actions this year:

• In the out years, Social Security costs have ticked up slightly, while Medicare and other health care spending will dip.

• Despite claims of larger savings, the one-year spending deal Congress reached in April to avert a government shutdown did not have a large effect on 2011 spending. The largest change, CBO said, came from lower defense spending because the deal was reached halfway through the fiscal year, which pushed some purchases into next year.

• The Democratic health care initiative will amount to a small but noticeable increase in taxes paid to the government over the next decade, and amount to about one-tenth of 1 percent of gross domestic product.

In a separate report, CBO updated its analysis of the president’s 2009 stimulus package, finding that it was responsible for sustaining between 1.3 million and 3.3 million jobs in 2010 — making it fall somewhere between somewhat and dramatically short of the White House’s projection that it would create 3.5 million jobs.

Meanwhile, the stimulus price tag ticked down slightly, to $825 billion, which is $6 billion less than the last estimate in May, though still well above the $787 billion CBO initially said it would cost initially.