TOKYO: Japan's economy unexpectedly slipped into recession in the third quarter, setting the stage for Prime Minister Shinzo Abe to delay an unpopular sales tax hike and call a snap election two years before he has to go to the polls.

The recession comes nearly two years after Abe returned to power promising to revive the economy with his “Abenomics” mix of massive monetary stimulus, spending and reforms, and is unwelcome news for an already shaky global economy.

Gross domestic product (GDP) shrank by an annualised 1.6 per cent in July-September, after plunging 7.3 per cent in the second quarter following a rise in the national sales tax, which clobbered consumer spending.

The world's third-largest economy had been forecast to rebound by 2.1 per cent, but consumption and exports remained weak, saddling companies with huge inventories to work off.

Abe had said he would look at the data when deciding whether to press ahead with a second increase in the sales tax to 10 per cent in October next year, as part of a plan to curb Japan's huge public debt, the worst among advanced nations.

“GDP figures for July-September turned out not so encouraging,” Abe said at a reception after returning from a weeklong overseas tour. “We are seizing a chance to exit long-lasting deflation and we cannot miss that chance,” adding he wanted to analyse the situation and make a decision on the tax.

Media had already said Abe could announce his decision to delay the hike for 18 months as early as Tuesday and state his intention to call an election for parliament's lower house. Ruling party lawmakers expect the poll to be held on Dec. 14.

An adviser to Abe termed the economic slide “shocking,” and urged the government to take steps to support the economy.

“This is absolutely not a situation in which we should be debating an increase in the consumption tax,” Etsuro Honda, one of the architects of Abe's reflationary policies, told Reuters.

Economy Minister Akira Amari said some economic stimulus was likely, but added it would be hard to craft an exceptionally big package because of the need for fiscal discipline.

No election for the lower house need be held until late 2016, but political insiders say Abe wants to lock in his mandate while his ratings are relatively robust. Next year he is expected to push ahead with unpopular policies such as restarting reactors that went off-line after the Fukushima nuclear crisis and a shift away from Japan's post-war pacifism.

Facing a divided and weak opposition, Abe's Liberal Democratic Party (LDP) is expected to keep its majority in the lower house, but it could lose some seats.

Consumption stagnant

A senior LDP lawmaker said he expected the premier to delay the tax hike and call a snap poll, arguing that his “Abenomics” strategy to re-energise the economy was working but needed more time.

“The prime minister feels strongly that he wants to make certain of the economic trend so I think he will put off the sales tax rise from next October,” the lawmaker told Reuters.

But he added it was vital to recommit to a firm date for the rise in the levy, or risk upsetting investors worried about Japan's debt, already more than twice the size of its economy.

The yen slipped on the poor GDP reading, with the dollar briefly pushing to a seven-year high above 117 yen. The Nikkei stock average fell 3 per cent.

Sluggish growth and easing price pressures due to sliding global oil prices prompted the Bank of Japan to unexpectedly expand its massive monetary stimulus last month.

Abe inherited the sales tax plan when he took power in December 2012. The LDP, its smaller ally and the then-ruling Democratic Party enacted the legislation requiring the tax to be raised unless economic conditions were judged too weak.

The GDP data showed the April hike to 8 per cent from 5 per ent had made it harder than anticipated for the public to shake off their deflationary mindset, Amari said, although he noted one bright spot in strong corporate profits.

On a quarterly basis, the economy shrank 0.4 per cent in the third quarter after a revised 1.9 per cent decrease in April-June. Economists had expected growth of 0.5 per cent.

Private consumption, accounting for about 60 percent of the economy, rose 0.4 per cent from the previous quarter, half as much as expected. Wage growth has not kept pace with price rises, so a key mechanism of Abenomics is not working yet.

Some economists, however, said growth could improve in the October-December quarter.