Everything about Crowding Out Economics totally explained
In economics,
crowding out theoretically occurs when the
government expands its borrowing to finance increased expenditure, or cuts taxes (for example is
engaged in
deficit spending),
crowding out private sector investment by way of higher interest rates. To the extent that there's controversy in modern
Macroeconomics on the subject, it's because of disagreements about how financial markets would react to more government borrowing.
If increased borrowing leads to higher interest rates by creating a greater demand for money and loanable funds and hence a higher "price" (
ceteris paribus), the
private sector, which is sensitive to interest rates will likely reduce investment due to a lower rate of return. This is the investment that's crowded out. The weakening of fixed investment and other interest-sensitive expenditure counteracts to varying extents the expansionary effect of government deficits. More importantly, a fall in fixed investment by business can hurt long-term economic growth of the supply side, for example, the growth of
potential output.
However, this crowding-out effect is moderated by the fact that government spending expands the market for private-sector products through the multiplier and thus stimulates – or "crowds in" – fixed investment (via the "
accelerator effect"). This accelerator effect is most important when business suffers from unused industrial capacity, for example, during a serious
recession or a
depression.
Crowding out can, in principle, be avoided if the deficit is financed by simply printing money, but this carries concerns of accelerating
inflation.
Crowding out of another sort (often referred to as international crowding out) may occur due to the prevalence of floating
exchange rates, as demonstrated by the
Mundell-Fleming model. Government borrowing leads to higher interest rates, which attract inflows of money on the
capital account from foreign financial markets into the domestic currency (for example, into assets denominated in that currency). Under floating exchange rates, that leads to
appreciation of the exchange rate and thus the "crowding out" of domestic exports (which become more expensive to those using foreign currency). This counteracts the demand-promoting effects of government deficits but has no obvious negative effect on long-term economic growth.
In the United States during the late 1990s, another kind of crowding out of exports occurred: large increases in private fixed investment and consumer spending encouraged high interest rates, a high dollar exchange rate, and hurt exports.
Crowding out is most serious when an economy is already at
potential output or
full employment. Then the government's expansionary
fiscal policy encourages increased prices, which lead to an increased demand for
money. This in turn leads to higher interest rates (
ceteris paribus) and crowds out interest-sensitive spending. At potential output, businesses are in no need of markets, so that there's no room for an accelerator effect. More directly, if the economy stays at full employment
gross domestic product, any increase in government purchases shifts resources away the private sector. This phenomenon is sometimes called "real" crowding out.
The negative effects on long-term economic growth that occur when private fixed investment are crowded out can be moderated if the government uses its deficit to finance productive investment in education, basic research, and the like. The situation is made worse, of course, if the government wastes borrowed money.
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