Notes for Lecture 18: Macro 2: Fiscal Policies, Government Spending and Taxation
[with models] [February 23, 2010]
Note: Some of the content in Lecture 17 is presented in Lecture 18. Some of the content in
Lecture 18 is contained in Lecture 19.
Economic Concepts:, family consumption and savings functions, marginal propensity to
consume, average propensity to consume, marginal propensity to save, average propensity
to save, investment-savings model, desired investment equals desired saving, undesired
inventory increases and decreases, aggregate expenditure model [AE], linear consumption
function, insufficient aggregate demand, injection necessary to reach full employment in AE
model, investment multiplier and the simple investment multiplier process, discretionary
fiscal policy versus fiscal policy, effectiveness of discretionary fiscal policy, four macro
economic models to show a fiscal/monetary injection/withdrawal.
Purpose of Monetary and Discretionary Fiscal Policy [DFP]
The primary purposes of monetary policy [Lecture 17] and discretionary fiscal policy are to
achieve full employment with price stability.
Through the transmission mechanism [analyzed in Lecture 18], it was shown how monetary
policy worked when the central bank undertook open market transactions [OMO]. When the
central bank [Bank of Canada] buys/sells Government of Canada bonds, the central bank’s
intention is to increase/decrease the cash reserves of the chartered banks. When chartered banks
have increased cash reserves, they will be able to offer new loans to the business sector which, in
turn, would raise the level of investment and through the investment multiplier [part of this lecture]
would increase the level of employment and real output in the economy.
In this lecture [and the following lecture], it will be shown that discretionary fiscal policy, which
should be co-ordinated with monetary policy, would also work to impact upon GDP, employment
and the price level.
Discretionary fiscal policy [DFP] is that component of total fiscal policy intended to achieve full
employment with price stability. In contrast, fiscal policy refers to any government outlay
[government spending on final goods and services and transfer payments to the private sector] and
tax revenue. For example, fiscal policy would include the fiscal commitment for the military
sector, which would not be included within discretionary fiscal policy. Discretionary fiscal
policy works primarily through increases/decreases in government expenditure on final goods and
services and through increases/decreases in taxation which are usually presented in the annual
Monetary policy and discretionary fiscal policy should work in a combined manner to restrict
economic activity in the economy when inflationary pressures occur [i.e., the economy is
overheated] and to expand economic activity in the economy when too high a level of