By | April 17 2012 9:54 AM

The three primary factors that determine the interest rate level a nation must pay to service its debt in the long term are; the currency, inflation and credit risks of holding the sovereign debt. All three of those factors are very closely interrelated. Even though the central bank can exercise tremendous influence in the short run, the free market ultimately decides whether or not the nation has the ability to adequately finance its obligations and how high interest rates will go. An extremely high debt to GDP level, which elevates the country's credit risk, inevitably leads to massive money printing by the central bank. That directly causes the nation's currency to fall while it also increases the rate of inflation.