Both Portugal and Greece could see their debts further downgraded in the next two months, ratings agency Standard & Poor's warned Wednesday, depending on what happens at a crucial European leaders' summit later this month.
The agency said in a report it is maintaining its A- rating on Portugal and its BB+ rating on Greece but has kept both countries on so-called "CreditWatch with negative implications."
Heavily indebted Greece accepted an EU-IMF bailout last year, as did Ireland, and ailing Portugal is widely expected to follow suit even though it managed to raise another euro1 billion ($1.38 billion) at a bond sale Wednesday.
S&P said it could lower the ratings on both Portugal and Greece within the next two months after analyzing an expected new European bailout mechanism. EU policymakers are to decide later this month on the key features of the European Stability Mechanism, which will replace the current European Financial Stability Facility from 2013 on.
The agency said it was unlikely that either rating would be cut by more than two notches. Even if Portugal was downgraded two notches it would still be investment grade, while Greece's debt is junk status already.
Eurozone governments have said private creditors may be involved in future financial rescue packages. However, there is still a high degree of uncertainty about how and at what point private creditors might be forced to take losses.
Greece accepted a euro110 billion ($152 billion) bailout from its partners in the EU and the International Monetary Fund last May and has some breathing room before it needs to tap bond markets for more cash.
However, Greece needs to see its market borrowing costs fall before it can seek investors for cash _ investors continue to demand a high premium to lend to it.
Earlier Wednesday, the yield on Greece's ten-year bond spiked over 12 percent once again. That took the spread with benchmark German bunds to over 9 percent _ a staggering difference for two countries that use the same currency.
Portugal's financing needs are more immediate as it tries to roll over debts at the same time as the government slashes spending and raises taxes to get public finances into shape.
German Chancellor Angela Merkel praised Portugal's "courageous steps" after meeting in Berlin with Prime Minister Jose Socrates and said the country is "on a very, very good track." Socrates insisted once again that "we don't need outside help."
Still, many financial experts think Portugal will follow both Greece and Ireland in requiring an international financial rescue. That's most evident in the bond markets, where the yield on Portugal's ten-year bonds have remained stubbornly above 7 percent for 19 straight trading days _ that's considered potentially unsustainable level in the long term.
"The ongoing CreditWatch placement reflects our view that Portugal remains a potential recipient of funding," said Eileen X. Zhang, a credit analyst at S&P.
S&P said Portugal faces a number of financial difficulties at a time when the country is expected to slip back into recession _ its external financing needs are still well above 200 percent of its current account receipts for 2011, its banks are heavily dependent on handouts from the European Central Bank and many government-owned businesses face big liquidity pressures.
The agency said the Portuguese government would need to approach its European partners for a bailout this year if it continues to face difficulties raising the financing it needs.
So far, Portugal is getting by, raising the money it needs but the costs are high. Earlier Wednesday, it raised euro1 billion ($1.38 billion) but the interest rates it has to pay remained stubbornly high.
The government debt agency said it sold euro450 million in 11-month bills and euro550 million in 6-month bills Wednesday. Demand for the longer-term bill was more than three times the amount on offer, while the shorter term loan was oversubscribed 2.6 times.
Portugal is paying 4.057 percent on the 11-month bills, up slightly from 3.98 percent in a sale of 12-month bills last month.
The 6-month bills went for 2.98 percent, the same as in February.
Also Wednesday, Merkel said if Ireland's new government came forward with a request for lower interest rates on its bailout loan, that would be discussed _ but she noted that "the Irish package is not very old yet."
"I can't say today whether we will have to change this package at all," Merkel said. She noted that interest rates reflect refinancing costs and confidence in a country, and said "we cannot, so to speak, artificially calculate rates downward."
Hatton contributed from Lisbon.