By Keith Jenkins and Anchalee Worrachate – Jan 3, 2012 2:22 AM PT

Governments of the world’s leading economies have more than $7.6 trillion of debt maturing this year, with most facing a rise in borrowing costs.

Led by Japan’s $3 trillion and the U.S.’s $2.8 trillion, the amount coming due for the Group of Seven nations and Brazil, Russia, India and China is up from $7.4 trillion at this time last year, according to data compiled by Bloomberg. Ten-year bond yields will be higher by year-end for at least seven of the countries, forecasts show.

Investors may demand higher compensation to lend to countries that struggle to finance increasing debt burdens as the global economy slows, surveys show. The International Monetary Fund cut its forecast for growth this year to 4 percent from a prior estimate of 4.5 percent as Europe’s debt crisis spreads, the U.S. struggles to reduce a budget deficit exceeding $1 trillion and China’s property market cools.

“The weight of supply may be a concern,” Stuart Thomson, a money manager in Glasgow at Ignis Asset Management Ltd., which oversees $121 billion, said in a Dec. 28 telephone interview. “Rather than the start of the year being the problem, it’s the middle part of the year that becomes the problem. That’s when we see the slowdown in the global economy having its biggest impact.”

Competition for Buyers

The amount needing to be refinanced rises to more than $8 trillion when interest payments are included. Coming after a year in which Standard & Poor’s cut the U.S.’s rating to AA+ from AAA and put 15 European nations on notice for possible downgrades, the competition to find buyers is heating up.

“It is a big number and obviously because many governments are still in a deficit situation the debt continues to accumulate and that’s one of the biggest problems,” Elwin de Groot, an economist at Rabobank Nederland in Utrecht, Netherlands, part of the world’s biggest agricultural lender, said in an interview on Dec. 27.

While most of the world’s biggest debtors had little trouble financing their debt load in 2011, with Bank of America Merrill Lynch’s Global Sovereign Broad Market Plus Index gaining 6.1 percent, the most since 2008, that may change.

Italy auctioned 7 billion euros ($9.1 billion) of debt on Dec. 29, less than the 8.5 billion euros targeted. With an economy sinking into its fourth recession since 2001, Prime Minister Mario Monti’s government must refinance about $428 billion of securities coming due this year, the third-most, with another $70 billion in interest payments, data compiled by Bloomberg show.

Rising Costs

Borrowing costs for G-7 nations will rise as much as 39 percent from 2011, based on forecasts of 10-year government bond yields by economists and strategists surveyed by Bloomberg in separate surveys. China’s 10-year yields may remain little changed, while India’s are projected to fall to 8.02 percent from about 8.39 percent. The survey doesn’t include estimates for Russia and Brazil.

After Italy, France has the most amount of debt coming due, at $367 billion, followed by Germany at $285 billion. Canada has $221 billion, while Brazil has $169 billion, the U.K. has $165 billion, China (PRCH) has $121 billion and India $57 billion. Russia has the least maturing, or $13 billion.

Rising borrowing costs forced Greece, Portugal and Ireland to seek bailouts from the European Union and IMF. Italy’s 10- year yields exceeded 7 percent last month, a level that preceded the request for aid from those three nations.

Bad Combination

“The buyer base for peripheral Europe has obviously shrunk at the same time that the supply coming to the market is increasing, which is not a good combination,” said Michael Riddell, a London-based fund manager at M&G Investments, which oversees about $323 billion.

The two biggest debtors, Japan and the U.S., have shown little trouble attracting demand.

Japan benefits by having a surplus in its current account, which is the broadest measure of trade and means that the nation doesn’t need to rely on foreign investors to finance its budget deficits. The U.S. benefits from the dollar’s role as the world’s primary reserve currency.

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