Thursday, March 09, 2017

Fiscal Policy (03/06/17)

Fiscal Policy  


How does the government stabilize the economy?

The government has 2 different tool boxes it can use:

1. Fiscal Policy

Actions by congress to stabilize the economy.

2.Monetary Policy

Actions by the Federal reserve bank to stabilize the economy.

Fiscal Policy

Changed in expenditures or/and revenues of the federal government

- 2 tools of fiscal policy:
  • Taxes- government can increase or decrease taxes.
  • Spending- government can increase or decrease spending
  • Fiscal Policy is enacted to promote our nation's economic goals: full employment, price stability, economic growth

Deficit, Surpluses, and Debt

  • Balanced budget
-Revenues = Expenditures
  • Budget Deficit
- Revenues > Expenditures
  • Government Debt
- Sum of all deficits - Sum of all surpluses

  • Government must borrow money when it runs a budget deficit
  • Government borrows from:
-Individuals
-Corporations
- Financial institutions
- Foreign entities of foreign governments

Fiscal Policy


  • Discretionary Fiscal Policy(action)
  • Expansionary Fiscal Policy - think deficit
  • Contractionary Fiscal Policy - think surplus
  •  Non- Discretionary Fiscal Policy ( no action)


3 Types of Taxes

1. Progressive Taxes- takes a larger percent of income from high income group (takes more from rich people).
Ex.: Current Federal Income Tax system.

2. Proportional Taxes (flat rate) - takes the same percent of income from all income groups.
Ex.: 20% flat income tax on all income groups.

3. Regressive Tax- takes a larger percentage from low income group (takes more from poor people)
Ex.: Sales Tax; any consumption tax.


Contractionary Fiscal Policy ( The Brakes)

Laws that reduce inflation, decrease GDP (Close a inflationary Gap)
  • Decrease Government spending
  • Tax Increases
  • Combination of the two
If in a Inflation, then G↓.: AD←.: GDPR↓ & PL↓.: u%↑ & π↓ or T↑.: DI↓.: C↓.: AD←.: GDPR↓ & PL↓.: u%↑ & π



  Expansionary Fiscal Policy (The Gas)
Laws that reduce unemployment and increase 
GDP (Close Recessionary Gap)
  • Increase Government spending
  • Decrease Taxes on consumption
  • Combination of the two

If Recession, then G↑.: AD→.: GDPR↑ & PL↑.: u%↓ & π↑ or T↓.: DI↑.: C↑.: AD→.: GDPR↑ & PL↑.: u%↓ & π

  • Anything that increases the government budget deficit during a recession and increases its budget surplus during inflation without requiring explicit action by policy makers.
1.    Transfer Payments
Automatic or Built - In Stabilizers


A. Welfare checks
B. Food Stamps
C. Unemployment checks
D. Corporate dividends
E. Social Security 
F. Veteran's benefits











Schools of Economics (02/28/17)

Classical vs Keynesian   


More information:

3 Ranges of AS (02/27/17)

3 Ranges of AS 




Reasons why price tend to be inflexible or "sticky" in a downward direction:

1. Fear of Wars
2. Wage Contracts
3. Minimum Wage
4. Menu Cost
5. Moral, effort and productivity


Range 1 (Horizontal range/ Keynesian model)
  • Output is low relative to the economies full employment output
  • Unemployment increases & GDP decreases.

Range 2 (Intermediate model)

Output expands as savings increases.

Range 3 (Vertical or Classical range)
  • In the Long- Run the A.S. curve is vertical, because the only effects of an increase in AD, when we are at full employment  or an increase at the price level.
  • Firms can't respond to increase in demand by increasing output

The Spending Multiplier (02/24/17)


The Spending Multiplier Effect 




·         An initial change in spending (C, IG, G, XN) causes a larger change in aggregate spending or Aggregate Demand (AD).

·         Multiplier = Change in AD / Change in Spending = ∆ AD / ∆ C, IG, G or XN

·         Why does this happen?

·         Expenditures and income flow continuously, which sets off a spending increase in the economy

Calculating the Spending Multiplier

·         The Spending Multiplier can be calculated from the MPS or the MPC.

·         Multiplier = 1 / 1 – MPC or 1 / MPS

Calculating the Tax Multiplier

·         When the government taxes, the multiplier works as reverse.
·         Why?
-          Because now money is leaving the circular flow
·         Tax multiplier (note: it’s negative)

-          = - MPC / 1 – MPC or - MPC / MPS

·         If  there is a tax – CUT, then then the multiplier is +, because there is now more money in the circular flow.


Consumption and Saving (2/23/17)



  • Disposable Income (DI)
- Income after taxes or net income
- DI = Gross Income - Taxes

2 Choices
  • With disposable income, households can either:
- Consume (spend money on goods & services)
- Save (not spend money on goods & services)

Consumption



  • Household spending
  • The amount to consume is constrained by:
- The amount of disposable income
- The propensity to save
  • Do households consume if DI = 0
- Autonomous consumption
- Dissaving
  • APC = C / DI = % DI that is spent
Saving

  • Household NOT spending
  • The ability to save is constrained by:
- The amount of disposable income
- The propensity to consume
  • Do households save if DI = 0
- NO
  • APS = S / DI = % DI that is not spent
APC & APS
  • ·         APC + APS = 1
  • ·         1  –  APS = APS
  • ·         1  – APS = APC
  • ·         APC > 1 .: Dissaving
  • ·          - APS.: Dissaving

MPC & MPS


  • ·         Marginal Propensity to Consume
- C / DI
- % of every extra dollar earned that is spent

  • ·         Marginal Propensity to Save
- S / DI
- % of every extra dollar earned that is saved
  • ·         MPC + MPS = 1
  • ·         1 – MPC = MPS
  • ·         1 – MPS = MPC

Determinants of C & S 

  • Wealth
  • Expectation
  • Household Debt
  • Taxes



The AS/AD Model (2/22/17)



  • The equilibrium of AS & AD determines the current output (GDPR) and the price level (PL)



Full employment 

  • Full employment equilibrium exists where AD intersects SRAS & LRAS at the same point. 


Inflationary Gap
Output is high and unemployment is less than NRU
Note: An inflationary gap caused by a rightward shift in AD is also known as 'demand pull inflation'





Recessionary Gap 

Output is low and unemployment is more than NRU.

Lower GDP = More Unemployment & Lower Income!


Changes (∆) in AD
↑↓→←∆

  •  Consumption (C)
- C↑ .: AD→ .: GDPR↑ &PL↑ .: u%↓ & π%↑
- C↓ .: AD← .: GDPR ↓ & PL↓ .: u%↑ & π%↓
  •  Gross Private Investment (IG)
- IG↑ .: AD→ .: GDPR↑ & PL↑ .: u%↓ & π%↑
- IG↓ .: AD← .: GDPR ↓ & PL↓ .: u%↑ & π%↓
  •  Government Spending (G)
- G↑ .: AD→ .: GDPR↑ & PL↑ .: u%↓ & π%↑
- G↓ .: AD← .: GDPR ↓ & PL↓ .: u%↑ & π%↓
  •  Net Exports (XN)
- XN↑ .: AD→ .: GDPR↑ & PL↑ .: u%↓ & π%↑
- XN↓ .: AD← .: GDPR ↓ & PL↓ .: u%↑ & π%↓

Decrease in AD
Increase in AD













Change (∆) in SRAS

  • ∆ Input Prices
- Input Prices↓  .: SRAS → .: GDPR↑ & PL↓ .: u%↓ & π%↓
- Input Prices↑  .: SRAS ← .: GDPR ↓ & PL↑ .: u%↑ & π%↑
  • ∆ Productivity
- Productivity↑  .: SRAS → .: GDPR↑ & PL↓ .: u%↓ & π%↓
- Productivity↓  .: SRAS ← .: GDPR ↓ & PL↑ .: u%↑ & π%↑
  • ∆ Legal-Institutional Environment
- Deregulation .: SRAS → .: GDPR↑ & PL↓ .: u%↓ & π%↓
- Regulation .: SRAS ← .: GDPR ↓ & PL↑ .: u%↑ & π%↑

Increase in SRAS

Decrease in SRAS








Interest rates & Investment Demand & LRAS V SRAS (2/21/17)

Interest rates & Investment Demand

What is Investment
  • Money spent on expenditures on:
- New plants (factories)
- Capital equipment (machinery)
- Technology (hardware &software)
- New homes
- Investment (goods sold by producers)

Expected Rates of Return
  • How does business make investment decisions?
- Cost / Benefit Analysis
  • How does business determine the benifits?
- Expected rate of return
  • How does business count the cost?
- Interest costs
  • How does business determine the amount of investment they undertake
- Compare expected rate of return to interest cost
- If expected rate of return > I.C., then invest
- If expected rate of return < I.C., then do not investment

Real (r%) v Nominal (i%)
  • How do you compute the real interest rate ( r%)
r% = i% -  π% 
  • What there determines the cost of an investment decision?
- The real interest rate (r%)

Investment Demand Curve (ID)


  • What is the shape of the investment?
-Downward slopping
  • Why?
When interest rates are high, fewer investments are profitable; when interest rates are low, more investments are profitable.

Shifts in Investment Demand

- Cost of Production
- Business taxes
- Stock of Capital
- expectations
Long-Run v. Short-Run



Long-Run Aggregate Supply (LRAS)
  • The Long-Run aggregate supply marks the level of full employment in the economy (analogous to the PPC)



only thing that shifts will be the determinants

Yf – full employment

Short-Run Aggregate Supply (SRAS)

  • Because input prices are sticky in the shhort-run, the SRAS is upward slopping


Changes in SRAS
  •  An increase in SRAS is seen as a shift to the right. SRAS ->
  • A decrease in SRAS is seen as a shift to the left. SRAS <-
  •  The key to understanding shift in SRAS is per unit cost of production.
 Per unit cost of production cost = total input cost/total output

Changes in SRAS
(increases/ decreases) 


Determinants of SRAS

  • Input Prices
  • Productivity
  • legal Institutional Environment
Input Prices
  • Domestic Resource Prices
- Wages (75% of all business costs)
- Cost of capital
- Raw materials (commodity prices)
  • Market Power
- Monopolies and cartels that control resources control the price of those resources
 Increase in Resource Prices = SRAS <-
 Decrease in Resource Prices = SRAS ->

Productivity
  • Productivity = total output / total  input
  • More productivity =  lower unit production cost = SRAS ->
  • Less productivity =  higher unit production cost = SRAS <-
Legal Institutional Environment

  • Taxes and Subsidies
- Taxes ($ to gov't) on business increase per unit of production cost = SRAS <-
- Subsidies ($ from gov't) to  business reduce per unit of production cost = SRAS ->
  • Government Regulation
- Government regulation creates a cost of compliance = SRAS <-
- Deregulation reduces compliance costs = SRAS ->

Aggregate Demand Curve (02/16/17)

Aggregate Demand Curve

Is the demand by consumer business, governmental, and foreign countries.


Changes in price level cause a move along the curve not a shift of the curve.



AD

Shows the amount of Real GDP that the private, public and foreign sector collectives desire to purchase at each possible price level.
- the relationship between the price level and the level of Real GDP is inverse.

3 reasons of Downward slopping

1. Wealth Effect

  • High prices reduce purchasing power of $
  •  Lowering the price level increases the purchasing power and increases expenditure.


2. Interest-Rate Effect

  • As price level increase, lender needs to charge higher interest rates to get a real return in their loans.
  •  Higher interest rate discourages consumer spending and business investment.


3. Foreign trade effect

  • When U. S. price level rises, foreign buyers purchase fewer U.S. goods and Americans buy more foreign goods.
  • Exports fall and imports rise causing Real GDP demand to fall.(Xn decreases)
Ex.: If prices triples in the U.S., Canada will no longer buy U.S. goods causing quantity demanded of
 U.S. products to fall.

Shifts in Aggregate Demand

There are two types to a shift in AD:
  • A change in C, Ig, G and/or Xn
  • A multiplier effect that produces a greater change than the original change in the 4  components.
Increases in AD = AD =>
Decreases in AD = AD =>



Determinants of AD

  •  Consumption (C)
  • Gross Private Domestic Investment (Ig)
  • Government Spending (G)
  • Net Exports (Xn) = Exports - Imports (X-M)
1. Change in consumer spending

- Consumer Wealth (Boom on the Stock Market)
- Consumer Expectations ( People fear a recession)
- Households Indebtedness ( More consumers debt)
- Taxes ( Decreases in income taxes)

2. Change in Investment Spending

- Real Interest Rate (Price of borrowing $)
(If interest rate increases ... )
(If interest rate decreases ... )
- Future Business expectations (High expectations...)
- Productivityand Technology (New Robots...)
- Business taxes (Higher corporate taxes mean...)

3. Change in Government Spending

(War...) (Nationalized Health Care...)
(Decrease in defense spending)

4. Change in Net Exports (X-M)
- Exchange rates. Ex.: If the U.S. dollar depreciates relative to the euro.

National Income Compared to Abroad

(If a major importer has a recession)
( If the U.S. has a recession )
Ex.:  "If the U.S. gets a Cold, Canada gets Pneumonia"

AD = GDP = C + I + G + Xn

Government Spending

  • More government spending (AD =>)
  • Less government spending (AD <=)
Further understanding: