BEIJING (AP) — China announced its biggest interest rate cut in 11 years yesterday to spur private borrowing and support a multibillion-dollar stimulus package to boost slowing economic growth.

The 1.08 percentage-point rate cut — the fourth cut in three months — reflects the government's urgency about raising private consumption and investment to supplement state spending on the stimulus package.

"This is the most aggressive monetary easing in recent years and should bode well for China's market performance," said Jing Ulrich, chairwoman of China equities for JP Morgan & Co., in a report to clients.

The 4 trillion yuan ($586 billion) stimulus aims to insulate China from a global slowdown by injecting money into the economy through spending on new highways and other public facilities. But its ultimate goal is to increase consumer spending, which a rate cut is meant to encourage.

Beijing is trying to shore up consumer and investor confidence and reverse a sharp downturn in growth. China's economy is expected to expand by at least nine percent this year, down from 11.9 percent last year. But communist leaders worry about rising job losses — especially in export industries hit by weak global demand — and possible unrest.

China has avoided a big hit so far from the global financial crisis because its banks are healthy and exports strong. But conditions are expected to worsen in coming months as export demand weakens and growth in real estate and other domestic industries slows.

Just this week, the World Bank cut its forecast for China's growth next year from 9.2 percent to 7.5 percent, the lowest level since 1990.

Beijing had been rumored to be considering a rate cut and Chinese stock markets fell on Monday after one failed to materialise over the weekend. Wednesday's cut was announced after markets closed. The Shanghai Composite index, down two-thirds from its peak in October 2007, edged up 0.5 percent to 1,897.88.

Also Wednesday, the central bank cut the amount of money commercial banks must set aside as reserves, expanding the pool available for lending.

The moves are meant to "promote stable credit growth," the People's Bank of China said on its website.

Interest on a one-year loan will fall to 5.58 percent, effective Thursday, while interest paid on deposits will fall to 2.52 percent.