Governments use fiscal policy to influence the level of aggregate demand in the economy, so that certain economic goals can be achieved: • Price stability; • Full employment; • Economic growth. The
Keynesian view of economics suggests that increasing government spending and decreasing the rate of taxes are the best ways to have an influence on
aggregate demand, stimulate it, while decreasing spending and increasing taxes after the economic expansion has already taken place. Additionally, Keynesians argue that expansionary fiscal policy should be used in times of
recession or low economic activity as an essential tool for building the framework for strong economic growth and working towards
full employment. In theory, the resulting deficits would be paid for by an expanded economy during the expansion that would follow; this was the reasoning behind the
New Deal. The
IS-LM model is another way of understanding the effects of fiscal expansion. As the government increases spending, there will be a shift in the IS curve up and to the right. In the
short run, this increases the
real interest rate, which then reduces
private investment and increases aggregate demand, placing upward pressure on supply. To meet the short-run increase in aggregate demand, firms increase
full-employment output. The increase in short-run
price levels reduces the
money supply, which shifts the LM curve back, and thus, returning the general
equilibrium to the original full employment (FE) level. Therefore, the IS-LM model shows that there will be an overall increase in the price level and real interest rates in the
long run due to fiscal expansion. Governments can use a
budget surplus to do two things: • to slow the pace of strong economic growth; • to stabilise prices when inflation is too high. Keynesian theory posits that removing spending from the economy will reduce levels of aggregate demand and contract the economy, thus stabilizing prices. Another model commonly used to understand the impacts of fiscal policy is the Aggregate Demand - Aggregate Supply (
AD-AS) model. It is similar to the IS-LM model but allows for the price level to vary, making it the superior model for a long-run analysis.
Economists still debate the effectiveness of
fiscal stimulus. The argument mostly centers on
crowding out: whether government borrowing leads to higher
interest rates that may offset the stimulative impact of spending. When the government runs a budget deficit, funds will need to come from public borrowing (the issue of government bonds), overseas borrowing, or
monetizing the debt. When governments fund a deficit with the issuing of government bonds, interest rates can increase across the market, because government borrowing creates higher demand for credit in the financial markets. This decreases aggregate demand for goods and services, either partially or entirely offsetting the direct expansionary impact of the deficit spending, thus diminishing or eliminating the achievement of the objective of a fiscal stimulus.
Neoclassical economists generally emphasize crowding out while Keynesians argue that fiscal policy can still be effective, especially in a
liquidity trap where, they argue, crowding out is minimal. In the
classical view, expansionary fiscal policy also decreases net exports, which has a mitigating effect on national output and income. When government borrowing increases interest rates it attracts foreign capital from foreign investors. This is because, all other things being equal, the
bonds issued from a country executing expansionary fiscal policy now offer a higher rate of return. In other words, companies wanting to finance projects must compete with their government for capital so they offer higher rates of return. To purchase bonds originating from a certain country, foreign investors must obtain that country's currency. Therefore, when foreign
capital flows into the country undergoing fiscal expansion, demand for that country's
currency increases. The increased demand, in turn, causes the currency to appreciate, reducing the cost of imports and making exports from that country more expensive to foreigners. Consequently,
exports decrease and
imports increase, reducing demand from
net exports. Some economists oppose the
discretionary use of fiscal stimulus because of the
inside lag (the time lag involved in implementing it), which is almost inevitably long because of the substantial legislative effort involved. Further, the
outside lag between the time of implementation and the time that most of the effects of the stimulus are felt could mean that the stimulus hits an already-recovering economy and
overheats the ensuing
h rather than stimulating the economy when it needs it. Some economists are also concerned about potential inflationary effects driven by increased demand engendered by a fiscal stimulus. In theory, fiscal stimulus does not cause inflation when it uses resources that would have otherwise been idle. For instance, if a fiscal stimulus employs a worker who otherwise would have been
unemployed, there is no inflationary effect; however, if the stimulus employs a worker who otherwise would have had a job, the stimulus is increasing
labor demand while
labor supply remains fixed, leading to
wage inflation and therefore
price inflation. ==See also==