That is the thrust of a new report released Tuesday by the nonpartisan Congressional Budget Office, estimating that the deficit for this fiscal year, which ends on Sept. 30, will fall to about $642 billion, or 4 percent of the nation’s annual economic output, about $200 billion lower than the agency estimated just three months ago.

The agency forecast that the deficit, which topped 10 percent of gross domestic product in 2009, could shrink to as little as 2.1 percent of gross domestic product by 2015 — a level that most analysts say would be easily sustainable over the long run — before beginning to climb gradually through the rest of the decade.

“The underlying deficit is improving,” said Mark Zandi, chief economist at Moody’s Analytics, citing the strengthening economy as a force in opposition to fiscal tightening. “The economy continues to grow, but the script’s still being written” given how fast the deficit is shrinking.

Over all, the figures demonstrate how the economic recovery has begun to refill the government’s coffers. At the same time, Washington, despite its political paralysis, has proved remarkably successful at slashing the deficit through a variety of tax increases and cuts in domestic and military programs.

Perhaps too successful. Given that the economy continues to perform well below its potential and that unemployment has so far failed to fall below 7.5 percent, many economists are cautioning that the deficit is coming down too fast, too soon.

“It’s good news for the budget deficit and bad news for the jobs deficit,” said Jared Bernstein of the Center on Budget and Policy Priorities, a left-of-center research group in Washington. “I’m more worried about the latter.”

Others, however, are warning that the deficit — even if it looks manageable over the next decade — still remains a major long-term challenge, given that rising health care spending on the elderly and debt service payments are projected to eat up a bigger and bigger portion of the budget as the baby boom generation enters retirement.

“It takes a little heat off, and undercuts the sense of fiscal panic that prevailed one or two years ago when the debt-to-G.D.P. ratio was climbing,” said Joel Prakken, a co-founder of the St. Louis-based forecasting firm Macroeconomic Advisers, referring to the growth of the country’s debt relative to the size of the economy. “These revisions probably release some pressure to reach a longer-term deal, which is too bad, because the longer-term problem hasn’t gone away.”

With the government running a hefty $113 billion surplus in the tax payment month of April, according to the Treasury, analysts now do not expect the country to run out of room under its debt ceiling — a statutory borrowing limit Congress needs to raise to avoid default — until sometime in the fall. That has left both Democrats and Republicans hesitant to enter another round of negotiations over painful cuts to entitlement programs like Social Security and Medicare, and tax increases on a broader swath of Americans, despite the still-heated rhetoric on both sides.

For the moment, the deficit is largely repairing itself. Just three months ago, the Congressional Budget Office projected that the current-year deficit would be $845 billion, or about 5.3 percent of economic output.

The $200 billion reduction to the estimated deficit comes not from the $85 billion in mandatory cuts known as sequestration, nor from the package of tax increases that Congress passed this winter to avoid the so-called fiscal cliff. The office had already incorporated those policy changes into its February forecasts.

Rather, it comes from higher-than-expected tax payments from businesses and individuals, as well as an increase in payments from Fannie Mae and Freddie Mac, the mortgage finance companies the government took over as part of the wave of bailouts thrust upon Washington in the darkest days of the financial crisis.

The C.B.O. said it had bumped up its estimates of current-year tax receipts from individuals by about $69 billion and from corporations by about $40 billion. The office said the factors lifting tax payments seemed to be “largely temporary,” due in part, probably, to higher-income households realizing gains from investments before tax rates went up in the 2013 calendar year.

It also reduced its estimated outlays on Fannie and Freddie by about $95 billion. The mortgage giants, which have required more than $180 billion in taxpayer financing since the government rescued them in 2008, have returned to profitability in recent quarters on the back of a stronger housing market and have begun to repay the Treasury for the loans.

But there is a darker side to the brighter outlook for the deficit. The immediate spending cuts and tax increases Congress agreed to for this year are serving as a partial brake on the recovery, cutting government jobs and preventing growth from accelerating to a more robust pace, many economists have warned. The International Monetary Fund has called the country’s pace of deficit reduction “overly strong,” arguing that Washington should delay some of its budget cuts while adopting a longer-term strategy to hold down future deficits.

In revising its estimates for the current year, the budget office also cut its projections of the 10-year cumulative deficit by $618 billion. Those longer-term adjustments are mostly a result of smaller projected outlays for the entitlement programs of Social Security, Medicaid and Medicare, as well as smaller interest payments on the debt.

The report noted that the growth in health care costs seemed to have slowed — a trend that, if it lasted, would eliminate much of the budget pressure and probably help restore a stronger economy as well. The C.B.O. has quietly erased hundreds of billions of dollars in projected government health spending over the last few years.

It did so again on Tuesday. In February, the budget office projected that the United States would spend about $8.1 trillion on Medicare and $4.4 trillion on Medicaid over the next 10 fiscal years. It now projects it will spend $7.9 trillion on Medicare and $4.3 trillion on Medicaid.

This article has been revised to reflect the following correction:

Correction: May 14, 2013

Because of an editing error, an earlier version of this article misspelled the author’s surname. She is Annie Lowrey, not Lowery.

Article source: http://www.nytimes.com/2013/05/15/business/cbo-cuts-2013-deficit-estimate-by-24-percent.html?partner=rss&emc=rss