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.