WASHINGTON (AP) — U.S. orders for machinery and other factory goods that signal business investment surged in January, indicating confidence in the economy.

The Commerce Department said Wednesday that orders for so-called core capital goods, which also include equipment and computers, rose 7.2 percent from December. It was the biggest gain in more than a year and higher than the initial 6.3 percent increase estimated by the government last week.

Total factory orders fell 2 percent in January from December. But the decline was mostly due to a steep drop in volatile aircraft and defense orders that was also reported last week.

Commercial aircraft orders plummeted 34 percent in January, while demand for military aircraft plunged 63.8 percent. Excluding the weakness in transportation, total orders would have risen 1.3 percent in January.

Demand for durable goods, items expected to last at least three years, dropped 4.9 percent. Demand for nondurable goods, such as chemicals and paper, rose 0.6 percent.

Economists pay close attention to core capital goods because they are a good measure of business investment plans. The category excludes aircraft and military orders, which can fluctuate sharply from month to month.

Peter Newland, an economist at Barclays, said the gains in core capital goods, as well as stronger restocking by manufacturers in January, prompted Barclays' economists to boost their economic growth estimate for the January-March quarter

Newland said they now expect growth at an annual rate of 1.8 percent. That's up from their initial forecast of 1.4 percent and much higher than the 0.1 percent growth rate reported for the October-December quarter.

Companies kept expanding their production capacities in January, even as taxes rose and automatic government spending cuts loomed. Nearly all Americans who draw a paycheck began paying higher Social Security taxes on Jan. 1, while income taxes rose for the highest earning workers.

Across-the-board spending cuts started to take effect on March 1.

A separate report last week showed manufacturing grew in February at the fastest pace since June 2011. The report from the Institute for Supply Management said growth was bolstered by gains in new orders and production.

The automatic spending cuts could force the Defense Department and other agencies to trim their budgets for this year. That could result in reductions in federal purchases of manufactured goods, which threaten to slow factory growth and the broader economy.

In addition, consumers may be more cautious about making large purchases as they adjust to higher taxes.

Still, recent reports indicate steady job growth and a strengthening housing recovery could offset some of the impact of the tax increases and spending cuts.

The economy created an average of 200,000 jobs per month from November through January, up from 150,000 the previous three months. The Labor Department issues its February employment report Friday.

Consumer confidence rose in February and service companies experienced their best growth in a year, according to private surveys.