Fiscal Policy, Sectoral Balances and Financial Sustainability

Many people, upon hearing “fiscal policy” mentioned in relation to “financial sustainability”, might imagine that it is the government’s financial sustainability that needs to be placed under scrutiny. Given the mass media’s proclivity for pumping out superstition and myth, especially when it comes to macroeconomics, this reaction would be entirely understandable. But, actually, assuming the government is a currency issuer that refrains from borrowing in currencies other than its own, questions of its financial sustainability do not apply. Rather, concerns of financial sustainability properly pertain to the private sector. Whereas a currency-issuing government faces no financial constraint (its only hard constraint is in terms of real resources), the financial reality for private households and firms is completely different. Private debt can very definitely reach financially unsustainable levels. This occurs when growth in income is insufficient to service private debt.

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