The fourth rate cut this year brought the cumulative reduction over the period to one percentage point, said bank governor Amando Tetangco.

"World economic conditions are likely to remain tepid as fiscal and financial-sector stresses in advanced economies continue to dampen market confidence," he said.

"The domestic underpinnings of Philippine economic growth remain firm. However, additional policy support could help ward off risks associated with weaker external demand by encouraging investment and consumption."

While impending electricity rate increases and rising global prices for some grains could upset the inflation outlook, subdued global demand should temper the overall picture by easing price pressures on oil imports, he added.

The latest central bank action brought its overnight borrowing rate to 3.50 percent, and its overnight lending rate to 5.50 percent.

Rate cuts of 25 basis points each were put into effect in January, March and July.

Last month the central bank raised its inflation forecasts to 3.4 percent this year and 4.1 percent in 2013, from 3.1 and 3.2 percent, respectively.

Inflation rose 3.6 percent year-on-year last month, bringing the average for the first eight months to 3.2 percent.

The government expects the economy to grow by nearly six percent this year after a 6.1 percent expansion in the first six months, Economic Planning Secretary Arsenio Balisacan said last month.

However exports are up by only 5.4 percent in the first eight months of 2012 amid a slump in August in shipments of electronics, the country's main export, to the United States, China and other key markets.

August imports also slipped 0.4 percent overall, to $5.06 billion, Economic Planning Undersecretary Rolando Tungpalan said Thursday.

"It is therefore important to continue to stimulate the domestic sources of growth and promote trade with other countries," he said in a statement.