Indonesia has just given the go-ahead for another leg down in the rupiah. It has cut its forecasts for the exchange rate to 9,700 per dollar compared to the 9,200 level at which the central bank used to step in. The currency has duly weakened and nervous foreigners have rushed to hedge exposure — 3-month NDFs price the rupiah at almost 10,000 to the dollar. The  rupiah last week hit a three-year low, its weakness coming on top of a dismal 2012 which saw it fall 6 percent as the current account deficit worsened. Traders in Jakarta are reporting dollar hoarding by exporters.

All that is spooking foreigners who own more than 30 percent of the domestic bond market. The currency weakness hit them hard last year as Indonesian bonds returned just 6 percent, a third of the sector’s 16 percent average (see graphic).

Emerging bonds have got off to a flying start in 2013, with debt funds taking in over $2 billion this past week, the second highest weekly inflow ever, according to fund tracker EPFR Global. Issuance is strong -  Turkey for instance this week borrowed cash repayable in 10 years for just 3.47 percent, its lowest yield ever in the dollar market.

Yet not everyone is optimistic and most analysts see last year’s returns of 16-18 percent EM debt returns as out of reach. The consensus instead seems to be for 5-8 percent as  tight spreads and low yields leave little room for further rallies — average yields on the EMBI Global sovereign debt index is just 4.4 percent.    Domestic bonds meanwhile could suffer if inflation turns problematic. (see here for our story on emerging bond sales and returns).

Could Asia be headed for a debt crisis?

The very thought may seem ludicrous given the region’s mighty current account surpluses and brimming central bank coffers.  But a note from RBS analysts Drew Brick and Rob Ryan raises some interesting concerns.

Historically speaking, most EM crises have been borne on the back of excessive capital inflows, Brick and Ryan write. And in many Asian countries, the consequence of these flows has been over-easy monetary policy that has left citizens and companies addicted to cheap money. Personal and corporate indebtedness levels have spiralled even higher in the past five years as governments across the continent responded to the 2008 credit crunch by unleashing billions of dollars in stimulus.

Global Investing has written several times about Japanese mom-and-pop investors’  adventures in emerging markets. Most recently, we discussed how the new government’s plan to prod the Bank of Japan into unlimited monetary easing could turn more Japanese into intrepid yield hunters.  Here’s an update.

JP Morgan analysts calculate that EM-dedicated Japanese investment trusts, known as toshin, have seen inflows of $7 billion ever since the U.S. Fed announced its plan to embark on open-ended $40-billion-a-month money printing.  That’s taken their assets under management to $67 billion. And in the week ended Jan 2, Japanese flows to emerging markets amounted to $234 million, they reckon. This should pick up once the yen debasement really gets going — many are expecting a 100 yen per dollar exchange rate by end-2013  (it’s currently at 88).