ECON-1221 Chapter 5 - Notes from the Textbook

All credit for this text goes to...

Ragan, C. T. S. (2024). Macroeconomics (18th Canadian ed.). Pearson Canada.

See how the concept of value added solves the problem of “double counting” when measuring national income

What is double counting?

Double counting = adding up all sales overcounts output because intermediate goods get counted multiple times

One firm’s output is often another firm’s input. Wheat → flour → bread.

If we add up all sales:

• Wheat counted when farmer sells it
• Wheat counted AGAIN when flour is sold (flour price includes wheat cost)
• Wheat counted AGAIN when bread is sold (bread price includes flour cost)

Term	Definition
Intermediate goods	Outputs of some firms that are used as inputs by other firms
Final goods	Products that are not used as inputs by other firms (in the period under consideration)

The Trap

You might think: “Just count final goods only.”

But firms don’t KNOW if their output is final or intermediate. When Stelco sells steel to Ford, they don’t know if it’s for a warehouse (final) or a car that will be resold (intermediate).

Test Wording Trap:

“Overstate” not “Increase” Double counting would greatly overstate (or exceed) the economy’s actual output.

NOT “increase” — the actual output doesn’t change, only the measured output is inflated.

Term	What It Means
Actual output	What was really produced (unchanged by measurement error)
Measured output	What our statistics say (inflated by double counting)

What is value added?

Value Added = Sales Revenue − Cost of Intermediate Goods

What YOU contributed to production — not what came in the door from someone else

$\text{Value Added}=\text{Sales Revenue}-\text{Cost of Intermediate Goods}$

Test Wording Trap:

“Intermediate Goods” not “Inputs”

Term	What It Includes
Inputs (broad)	Everything used in production — labor, capital, intermediate goods
Intermediate goods (specific)	Only goods purchased from OTHER FIRMS

Labor is an input, but you don’t subtract wages when calculating value added — wages ARE part of value added (they’re factor payments).

✅ Correct: Value Added = Sales Revenue − Cost of Intermediate Goods ❌ Wrong: Value Added = Sales Revenue − Cost of Inputs

Wheat → Flour → Bread

Stage	Firm	Sells For	Cost of Inputs	Value Added
1	Wheat farmer	$100	$0	$100
2	Flour mill	$250	$100 (wheat)	$150
3	Bakery	$400	$250 (flour)	$150
Total		$750		$400

• Sum of all sales: $750 (WRONG — overcounts)
• Sum of all value added: $400 (CORRECT — equals final good value)

Kai

looking at macro econ value added from a management accounting perspective, we would have inputs like direct labour and raw materials. if the raw materials are an intermediate good, from another company, we remove them?

Yes, exactly right.

Value Added = Sales Revenue − Cost of Intermediate Inputs

From your firm’s perspective, that $100ofwheattheflourmillbuysis{n}^{\prime }{t}_{t}hei{r}_{v}alueadded—i{t}^{\prime }sthefarme{r}^{\prime }s.Themil{l}^{\prime }scontributionisonlythe$150 they added through their own factors of production: their labor, their capital equipment, their entrepreneurial coordination.

The management accounting connection works like this:

Input Type	Value Added?	Why
Direct labor	✓ Yes	Your workers transforming inputs → your contribution
Raw materials (purchased)	✗ No	Another firm’s value added, already counted upstream
Depreciation on your equipment	✓ Yes	Your capital being consumed in production

So when you’re calculating value added, you’re essentially asking: “What did WE contribute that wasn’t already created by someone else?”

This is why GDP uses value-added rather than gross sales—summing all transactions ($750) would count the wheat three times: once when sold to the mill, again embedded in flour, again embedded in bread.

The practical implication: if you wanted to calculate a country’s GDP by the production approach, you’d sum up every firm’s (Revenue − Intermediate Purchases), which equals the sum of all wages, rents, interest, and profits paid out. That’s why GDP = total income = total value added—they’re three ways of measuring the same thing.

Why does each firm only get credit for value THEY created?

GDP measures PRODUCTION, not TRANSACTIONS

Value added ensures we count each dollar of production exactly once

The wheat doesn’t become “more wheat” when the flour mill buys it. The mill didn’t produce the wheat — they just purchased it. What they DID produce is the transformation: wheat → flour.

If we credit the mill for $250(fullsales),w{e}^{\prime }resayingtheyproduced$250 of value. But $100 of that value was already sitting in the wheat before the mill touched it.

How does value added connect to factor payments?

Value Added = Payments to the firm's factors of production

Sales revenue must be fully exhausted by:

• Cost of intermediate goods (paid to other firms)
• Payments to factors of production (wages, interest, profits)

What’s left after subtracting intermediate goods IS factor payments.

$\text{Value Added}=\text{Payments owed to the firm’s factors of production}$

Therefore:

$\text{Sales Revenue}-\text{Cost of Intermediate Goods}=\text{Payments to factors}$

The sum of all values added in an economy = total output = GDP

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Why does GDP measure production, not transactions?

Idea

GDP answers: “How much NEW stuff did we create this year?”

Transactions can multiply without creating anything new

Scenario	Transactions	Production
A painting sells 10 times at auction	10 transactions	0 new paintings
A stock trades 1,000 times in a day	1,000 transactions	0 new goods
The same house is flipped 3 times	3 transactions	0 new houses

If GDP measured transactions, a speculative frenzy would look like “economic growth” — even though nothing new was made.

When ARE transactions the better measure?

Question You’re Asking	Better Measure	Why
How active is this market?	Transactions (volume)	Shows liquidity, participation
How much tax revenue from sales tax?	Transactions	Tax levied per transaction
Is money circulating or hoarded?	Velocity (transactions ÷ money supply)	Shows economic “flow”
Is a stock market healthy/liquid?	Transaction volume	Dead markets have few trades

Rule of thumb

If the underlying asset ALREADY EXISTS → transactions matter more

If something NEW is being created → production matters more

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Why do we care about production?

Production is the SOURCE. Everything else flows from it.

Income, employment, consumption, living standards — all depend on production.

What Production Does	Why It Matters
Creates NEW stuff	More goods/services available for people to use
Generates income	No production = no wages, no profits, no rent
Requires workers	More production = more employment
Expands what’s available to consume	You can only consume what’s been produced

What do people do with GDP information?

Who	What They’re Deciding	How GDP Informs It
Central Bank (Bank of Canada)	Should we raise or lower interest rates?	GDP falling → might lower rates to stimulate; GDP rising too fast → might raise rates to cool inflation
Government (fiscal policy)	Should we increase spending or cut taxes?	Recession → stimulus; Overheating → restraint
Businesses	Should we expand, hire, invest?	GDP growth → demand rising → good time to invest
Investors	Where should I allocate capital?	GDP trends signal which economies/sectors are growing

How does GDP connect to the output gap?

The decision chain:

Step	What Happens
1. GDP data comes in	We measure actual output (Y)
2. Compare to potential GDP (Y*)	How far are we from sustainable capacity?
3. Identify the gap	Recessionary gap (Y < Y*) or Inflationary gap (Y > Y*)
4. Policy response	Recessionary → stimulate; Inflationary → cool down

March 2020: GDP collapsing (COVID) → massive recessionary gap → Bank of Canada slashed rates; government launched CERB

2022: GDP recovered, inflation spiking → inflationary gap → Bank of Canada raised rates aggressively

GDP is the vital sign. Policy is the treatment.

Measure GDP to diagnose. Act on the diagnosis with monetary and fiscal policy.

Does this same logic apply at other scales?

Yes — the arbitrage logic is the same whether you’re a country, a business, or an individual:

Actor	”Reserve” During Boom	”Deploy” During Bust
Government	Run surplus, pay down debt	Run deficit, stimulus spending
Business	Build cash, reduce debt	Invest, acquire, hire talent
Person	Save, pay down debt	Draw on savings, buy discounted assets

Boom = accumulate reserves. Bust = deploy them.

Same principle at every level — different levers.

The challenge: Knowing where you are in the cycle is harder than it looks. Data is lagged, signals conflict, and peaks/troughs are only visible in hindsight.

For more on why cycle timing is difficult despite all our data, see Economic Data Tells You Where You Were, Not Where You Are.

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Is more GDP always better?

No. GDP measures activity, not value.

Building unneeded houses, cleaning up oil spills, working longer hours — all raise GDP without making life better.

Scenario	GDP Impact	Actual Outcome
Car accident → hospital bills, repairs	↑	Nobody better off — just recovering from harm
Oil spill → cleanup crews hired	↑	Fixing damage, not creating value
Build houses nobody needs	↑	Resources wasted
Work 80 hours instead of 40	↑	Burnout, lost family time

The problem: When a gauge becomes a goal, people optimize for the number rather than what it’s supposed to represent.

GDP is a gauge, not a goal Useful for tracking economic activity. Dangerous if treated as the target.

See Every Comparison Has a Hidden Baseline for why “GDP went up” is meaningless without asking “compared to what?”

Optimal vs Maximum GDP

There’s an optimal level of economic activity, not a maximum.

Concept	What It Means
Maximum GDP	Everyone works as much as physically possible
Potential GDP (Y)*	Sustainable output without overheating — includes reasonable leisure
Optimal GDP	Level where marginal benefit of more output = marginal cost (including lost leisure, health, sustainability)

This connects to Y vs Y*:

| If Y < Y* | Recessionary gap — involuntary underutilization | | If Y = Y* | At potential — sustainable capacity | | If Y > Y* | Inflationary gap — overheating, unsustainable |

"Idle" resources aren't always bad

• Rest enables future productivity (investment)
• Leisure has genuine value (the lawyer who works 200 fewer hours)
• Sustainability requires not running at maximum

The goal is optimal, not maximum.

Distinguishing Types of Non-Work

Type of Non-Work Time	Is It a “Loss”?
Chosen leisure that restores you	No — this is valuable
Addiction that depletes you	Yes — this is a cost
Rest that enables future productivity	No — this is investment
Involuntary idleness (recession)	Yes — but different cause than the others

GDP can fall for good reasons (more leisure) or bad reasons (recession). The number alone doesn’t tell you which.

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Explain how GDP is measured from the expenditure side and from the income side

What is the circular flow of income?

The value of domestic output = the value of expenditure on that output = the total income generated by producing that output

Three ways to measure the same economy:

Approach	What You’re Counting
Output (Production)	Value of all goods/services made
Expenditure	Total spending on that output
Income	Total income earned from producing it

Why are they equal?

Identity	Logic
Output = Expenditure	Everything produced gets bought (including inventory — firms “buy” their own unsold output)
Expenditure = Income	Every dollar spent becomes a dollar earned (double-entry logic)
Output = Income	The value of what we made = the income generated making it

This uses double-entry logic applied to the whole economy

One person’s spending = another person’s income — same dollars, opposite sides of the ledger

This gives us two commonly used ways to calculate GDP:

• GDP on the expenditure side — add up total expenditure on domestic output
• GDP on the income side — add up total income generated by domestic production

Both yield the same total (in theory). In practice, measurement errors create a statistical discrepancy — a “fudge factor” to reconcile the two.

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What is the expenditure side of GDP?

Etymology of “expenditure”

From Latin expendere → “ex” (out) + “pendere” (to weigh, to pay)

Literal meaning: “to weigh out” — originally referring to weighing out coins for payment.

Related Word	Same Root	Meaning
Spend	pendere	To pay out
Pension	pendere	Regular payment (weighed out periodically)
Compensate	pendere	To weigh together (balance a loss with payment)

The terminology trap In everyday English, "expenditure" feels like YOUR outflow — money leaving your pocket.

In GDP, “expenditure on domestic output” means: money flowing TO domestic producers — regardless of who’s paying.

It’s about what was PURCHASED, not about any single buyer’s outflow.

What is the expenditure side formula?

$\text{GDP}=C_a+I_a+G_a+(X_a-I{M}_a)$

Mnemonic: "Can I Get Net eXports?"

Symbol	Component	Who’s Spending	On What	Mnemonic
$C_a$	Consumption expenditure	Households	Goods and services for final use	Can
$I_a$	Investment expenditure	Businesses	Capital goods, inventory, new housing	I
$G_a$	Government purchases	Government	Goods and services (NOT transfers)	Get
$(X_a-I{M}_a)$	Net exports	Foreigners (net)	Exports minus Imports	Net eXports

Why subscript “a”? The “a” stands for actual — measured values, as opposed to theoretical or desired values (used in later chapters).

Expenditure Side GDP = total spending on Canadian output, by anyone

• Canadians buying Canadian goods (C, I, G)
• Foreigners buying Canadian goods (X)
• Minus: Canadians buying foreign goods (IM)

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How Does the Import Adjustment Work?

C, I, and G record SPENDING BEHAVIOR — regardless of where the good was produced. The IM term then subtracts the portion that went to foreign production.

This is a two-entry system, not one item in two categories:

Entry	What It Records	Where It Goes
Entry 1	”A consumer bought a car”	$C_a$
Entry 2	”The car was imported”	$I{M}_a$

Example — Canadian consumer buys a $30,000 Japanese car:

Entry	Amount	Why
$C_a$	+$30,000	Consumer spending behavior recorded
$I{M}_a$	+$30,000	Spending went to foreign production
Net contribution to Canadian GDP	$0	They cancel out

Example — Canadian consumer buys a $30,000 Ontario-made car:

Entry	Amount	Why
$C_a$	+$30,000	Consumer spending behavior recorded
$I{M}_a$	$0	Nothing imported
Net contribution to Canadian GDP	+$30,000	Full value counts

Idea

The category question asks: “Which column does the spending go in?”

The net contribution question asks: “What’s the final effect after all adjustments?”

These are different questions with different answers.

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Why Is Savings NOT in the Expenditure Formula?

Savings is a WITHDRAWAL from the spending stream, not expenditure on output. The key question: At what point do we count it?

In the circular flow diagram, savings appears on the expenditure side — but as a withdrawal (green/dotted), not an injection.

Trace the money:

Step	What Happens	Expenditure on Output?
1	Household earns $1000	—
2	Household deposits $1000 in bank (saving)	❌ No goods purchased
3	Bank lends $1000 to a business	❌ No goods purchased
4	Business buys $1000 of equipment (investment)	✅ Yes — equipment purchased

The money is “in the system” the whole time. But expenditure on output only happens at step 4.

Why not count both savings AND investment?

If You Count Both	Amount
Savings	$1000
Investment	$1000
Total	$2000

But only $1000 of output was actually purchased (the equipment). Counting both would double-count — the same dollars counted when they entered the financial system and again when they exited.

We count it once — at the point where output is actually purchased.

Savings = transfer to financial system (not spending on output)

Investment = spending on capital goods (actual expenditure on output)

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Categorizing Expenditures: The Framework

To determine which category (C, I, G, X):

Ask: Who is buying?

Buyer	Category
Household (for personal use)	C
Business (for production/resale)	I
Government (for goods/services)	G
Foreigner (from outside Canada)	X

To determine if it’s included in Canadian GDP at all:

Ask: Is this NEW production occurring in Canada?

Situation	Included?
New production in Canada	✅ Yes
Second-hand/resale (no new production)	❌ No
Production happens outside Canada	❌ No (goes in that country’s GDP)

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What is consumption expenditure ($C_a$)?

Consumption = expenditure on all goods and services sold to their final users (households) during the year

Category	Examples	Durability
Services	Haircuts, dental care, legal advice, cellphone service	Consumed immediately
Non-durable goods	Fresh vegetables, clothing, cut flowers, fresh meat	Short lifespan
Durable goods	Cars, TVs, furniture, air conditioners	Long lifespan

Buying a NEW house is NOT consumption It's investment (residential investment) — covered below.

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What is investment expenditure ($I_a$)?

Investment = expenditure on goods NOT for present consumption

Investment has THREE sub-components:

Sub-component	What It Covers
Changes in inventories	Goods made but not yet sold; inputs purchased but not yet used
Fixed investment (plant and equipment)	Factories, machines, computers, warehouses
Residential investment	Construction of NEW houses and apartment buildings

What are inventories?

Term	Definition
Inventories	Stocks of inputs and outputs held by firms
Accumulation	Inventory increase — goods produced but not sold
Decumulation	Inventory decrease — sold more than produced (drew down stock)

A car company makes 100 cars. Only 80 sell.

What Happened	Classification
80 cars sold to consumers	Consumption (C)
20 cars sit on the lot unsold	Changes in inventories (part of I)

The 20 unsold cars are treated as the firm “buying” its own output.

"Everything produced gets bought" is true BY DEFINITION Unsold output = inventory accumulation = positive investment This is an accounting convention, not a claim about markets clearing perfectly

Why this matters: Inventory changes signal economic conditions. Rising inventories can mean firms produced expecting sales that didn’t materialize — a warning sign about demand.

What is fixed investment?

Term	Definition
Capital goods	Manufactured aids to production — tools, machines, computers, vehicles, office buildings, factories
Capital stock	The economy’s total quantity of capital goods accumulated through past production
Fixed investment	Adding to the existing stock of capital goods (also called “business fixed investment”)

Firms buying automobiles When a firm buys cars/trucks, it's Investment (I) — either:

• Fixed investment if they’re company vehicles (capital goods for use in production)
• Inventory investment if they’re a dealership buying cars to resell

Either way, it’s I — the ambiguity doesn’t change the category.

What is residential investment?

New housing construction counts as investment because a house is a durable asset yielding utility over a long period.

Transaction	Counts in GDP?	Why
Building a NEW house	Yes — residential investment	New production
Buying an EXISTING house	No	Just transfer of ownership; house was already counted when built

What is the difference between gross and net investment?

Term	Definition
Depreciation	Capital wearing out through use
Replacement investment	Investment spending to replace worn-out capital
Net investment	Investment that ADDS to the capital stock
Gross investment	Net investment + Replacement investment (all investment)

$\text{Gross Investment}=\text{Net Investment}+\text{Depreciation}$

$\text{Net Investment}=\text{Gross Investment}-\text{Depreciation}$

GDP is GROSS Domestic Product It includes ALL investment — even replacement investment that just maintains existing capital

Machines A country starts the year with 100 machines.

Event	Machines
Start of year	100
10 machines wear out (depreciation)	−10
Country buys 25 new machines (gross investment)	+25
End of year	115

• Net investment = change in capital stock = 115 − 100 = 15
• Gross investment = total machines purchased = 25
• Depreciation = machines that wore out = 10

Check: Net (15) = Gross (25) − Depreciation (10) ✓

Calculation Trap: Net vs. Gross in Problems Data tables often report Net Investment because it shows whether the capital stock grew.

But GDP needs Gross Investment because GDP measures ALL spending on output.

If given Net Investment and Depreciation: $I_a=\text{Net Investment}+\text{Depreciation}$

You’re not “adding depreciation to GDP” — you’re converting Net to Gross to get the right number for the formula.

Depreciation in National Income Accounting vs. Financial Accounting

Context	What “Depreciation” Means
Financial accounting	Non-cash expense allocating asset cost over useful life (book entry)
National income accounting	Estimate of how much capital was “used up” this period

National income depreciation is conceptual — it separates gross investment into:

• Portion that expanded the capital stock (net investment)
• Portion that offset what wore out (depreciation)

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What are government purchases ($G_a$)?

Government purchases = government buying goods and services Street-cleaning, firefighting, public servants, soldiers, etc.

Why are government services valued at cost?

Government activities are valued at what they COST to produce, not market value.

Why? No market price exists for many government services. What’s the market value of law courts or police protection? Unknown. But we know what it costs to provide them.

Curious consequence

If government becomes more productive (one worker now does what two did), measured government contribution FALLS — even if output stays the same.

This is inevitable when measuring by cost rather than market value.

What is the difference between government purchases and government expenditure?

Only government PURCHASES of currently produced goods and services count in GDP Transfer payments are government expenditure but NOT government purchases

Type	Counts in GDP?	Why
Government purchases	Yes	Government buying goods/services — real production occurs
Transfer payments	No	Not purchasing anything — just moving money

Transfer Payment Examples	Why Excluded
Canada Pension Plan (CPP) payments	No goods/services purchased from retiree
Employment Insurance (EI)	No production in exchange
Welfare payments	No production in exchange
Interest on national debt	Just transferring money from taxpayers to bondholders

Where transfer payments go?

CPP payment → retiree receives money → retiree buys groceries

• The CPP payment itself: NOT in GDP (transfer)
• The groceries purchase: YES in GDP (consumption)

The transfer enables spending, but the transfer itself isn’t production.

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What are net exports ($N{X}_a$)?

Term	Definition
Exports ($X_a$)	Foreign expenditure on domestically produced goods and services
Imports ($I{M}_a$)	Domestic expenditure on foreign-produced goods and services
Net Exports ($N{X}_a$)	Exports minus imports

Why add exports?

GDP measures production IN CANADA Exports are Canadian production bought by foreigners — not captured in C, I, or G

When a German company buys Canadian lumber:

• That lumber was produced in Canada
• It created income for Canadians
• But Germans aren’t in C, I, or G

So we ADD exports to capture foreign spending on Canadian output.

Why subtract imports?

C + I + G includes some spending on FOREIGN production We subtract imports to remove spending that wasn't on Canadian output

When you buy a Japanese car:

• It shows up in C (your consumption)
• But it wasn’t produced in Canada

We SUBTRACT imports to keep GDP focused on domestic production.

Transaction	Production Location	In Canadian GDP?
Canadian buys Canadian goods	Canada	✓ Yes (in C, I, or G)
Foreigner buys Canadian goods	Canada	✓ Yes (added via X)
Canadian buys foreign goods	Elsewhere	✗ No (subtracted via IM)

Net Exports adjusts for the border Add what foreigners bought from us (our production) Subtract what we bought from them (their production)

Net exports can be:

• Positive: Exports > Imports (trade surplus)
• Negative: Imports > Exports (trade deficit)

Why isn’t this double counting with other countries?

Each country's GDP only counts what THEY produced

If Canada sells lumber to Germany:

• Canadian GDP: counts as export (our production) → ADDS to Canadian GDP
• German GDP: counts as import (foreign production) → SUBTRACTED from German GDP

The lumber is counted exactly once globally — in the country that produced it.

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GDP vs. GNP: Geography vs. Ownership

Supplementary Context

This section may not be in your current textbook edition, but it’s helpful for understanding why ownership doesn’t determine which country’s GDP an activity counts toward.

The "D" in GDP stands for Domestic — it's about geography, not ownership.

Measure	What It Tracks	Key Question
GDP (Gross Domestic Product)	Production within borders	Where does production happen?
GNP (Gross National Product)	Production by nationals	Who owns the factors of production?

Why does this distinction matter?

Example: U.S.-owned forest company operating in Canada buys machinery

Measure	Included?	Why
Canadian GDP	✅ Yes (as I)	Production/operation happens in Canada
Canadian GNP	❌ No	Canadians don’t own the company
U.S. GNP	✅ Yes	U.S. nationals own the company

Example: Canadian-owned company operating in Korea

Measure	Included?	Why
Korean GDP	✅ Yes	Production happens in Korea
Canadian GDP	❌ No	Production doesn’t happen in Canada
Canadian GNP	✅ Yes	Canadian nationals own it

Common Exam Trap

“U.S.-owned company located in Canada” → This is Canadian GDP (location matters)

“Canadian-owned company located in U.S.” → This is U.S. GDP (location matters)

Ownership determines GNP. Location determines GDP.

Which measure is better?

Question	Better Measure
How much is being produced in this country?	GDP
How much income are this country’s residents receiving?	GNP

GDP is superior for measuring domestic economic activity. GNP is superior for measuring income of domestic residents.

The difference between GDP and GNP:

• GDP = value of production located in Canada, regardless of who owns it
• GNP = value of production owned by Canadians, regardless of where it happens

For most countries, GDP and GNP are close. They diverge when:

• Many foreign companies operate domestically (GDP > GNP)
• Many domestic companies operate abroad (GNP > GDP)

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What is the income side of GDP?

The value of production generates income exactly equal to that value GDP from the income side adds up all claims on the value of output

What are factor incomes?

Payments to the factors of production — W.I.P.:

Component	Factor Being Paid	Notes
Wages and salaries	Labour	Pre-tax (before deductions for income tax, EI, pension contributions)
Interest	Borrowed capital	Excludes interest on government bonds
Profits (Business profits)	Owner’s capital	Includes dividends + retained earnings + rent + profits of Crown corporations

Memory hook: W.I.P. = “Work In Progress” — the factors are working to create value.

Why pre-tax wages?

The tax is still income that was GENERATED by production.

A worker earns $1000.

• $200 goes to government as income tax
• $800 goes to the worker

But production generated $1000 of wages — that’s what GDP captures.

If we used after-tax wages, we’d lose track of some income.

Why exclude government bond interest?

Does this payment represent a claim on CURRENT production?

Yes → factor income → in GDP

No → transfer → excluded

Type of Interest	Production Involved?	In GDP?
Corporate bond interest	Yes — firm used borrowed capital to produce goods this year	✓ Factor income
Government bond interest	No — just servicing past debt, no output created now	✗ Transfer

This connects to the matching principle from financial accounting: only count income that matches CURRENT production. Transfer payments compensate past contributions or non-production — wrong period, excluded.

How do factor incomes map to factors of production?

Factor of Production	Payment
Labour	Wages and salaries
Capital	Interest + Profits
Land	Rent (textbook lumps into Profits)

What are non-factor payments?

Claims on output value that DON’T go to factors of production:

Component	Where It Goes	Why It’s Not Factor Income
Indirect taxes (minus subsidies)	Government	GST/PST — skimmed off before factors get paid
Depreciation	Replacing worn-out capital	Not income to anyone — just maintaining existing capital

Memory hook: “The government takes its cut (taxes), and the machines need repairs (depreciation)” — neither pays a person.

Why add indirect taxes and subtract subsidies?

GDP is measured at MARKET PRICES (what buyers pay). This reconciles “what buyers paid” with “what factors received.”

Situation	Market Price vs. Factor Income	GDP Treatment
Indirect tax (GST, PST)	Market price > what factors receive	ADD to factor income
Subsidy	Market price < what factors receive	SUBTRACT from factor income

Example

Indirect tax: A good’s market price is $\mathrm{10.00.}Thisincludes$0.60 PST and $0.50GST.Only$8.90 is available as income to factors of production. Government claims $1.10 of the market value.

Subsidy: A bus company earns $140,000infaresplus$10,000 government subsidy. Total income generated: $150,000Marketvalueofoutput:$140,000 The subsidy lets factor incomes EXCEED market value — so we subtract it.

Why add depreciation?

Some investment replaces capital that wore out. This spending generates economic activity but isn’t income to any factor.

Since GDP is “Gross” (includes all investment, even replacement), we add depreciation on the income side to match.

What is the income side formula?

$\text{GDP}=\text{Wages}+\text{Interest}+\text{Profits}+\text{Indirect Taxes}-\text{Subsidies}+\text{Depreciation}$

Mnemonic:

“Why I’ve PTSD” W + I + P + T − S + D

“Why I’ve” = W + I (Wages, Interest) “PTSD” = P + T − S + D (Profits, Taxes, Subsidies, Depreciation)

Remember: S is SUBTRACTED

Or grouped:

$\text{GDP}=\underset{\text{Factor Incomes (W.I.P.)}}{\underbrace{\text{Wages + Interest + Profits}}}+\underset{\text{Non-Factor Payments}}{\underbrace{\text{Indirect Taxes}-\text{Subsidies}+\text{Depreciation}}}$

Why does the income side need non-factor payments?

GDP measures market prices — what buyers actually pay.

The income side adds up what factors received. But sometimes market price ≠ factor income.

Indirect taxes — market price > factor income:

Item	Amount
Market price (what buyer pays)	$10.00
Tax (goes to government)	$1.10
Factor income (what factors receive)	$8.90

Factor income understates market price → ADD taxes to get to GDP

Subsidies — market price < factor income:

Item	Amount
Bus fares collected (market price)	$140,000
Government subsidy	$10,000
Factor income (what factors receive)	$150,000

Factor income overstates market price → SUBTRACT subsidies to get to GDP

Situation	Factor Income vs. Market Price	Adjustment
Indirect tax	Factor income too LOW	Add
Subsidy	Factor income too HIGH	Subtract

We're reconciling factor income back to market prices.

Subsidies inflate factor income beyond what the market paid, so we subtract them.

Why have two methods?

Method	Useful For
Expenditure side	Understanding composition of demand — how much is consumption vs. investment vs. government vs. trade?
Income side	Understanding distribution of income — how much goes to labour vs. capital?

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Explain the difference between real and nominal GDP

See ECON-1221 Chapter 4 - Notes from the Textbook for detailed coverage of Real vs. Nominal GDP

Quick recap: What’s the difference?

Idea

Nominal = “named” value (face value in current dollars)

Real = actual purchasing power (adjusted for price changes)

Etymology: From Latin nomen meaning “name” — nominal GDP is the value “in name only.”

Term	Equivalent Expression	What It Measures
Nominal GDP	GDP at current prices	Output × this year’s prices
Real GDP	GDP at base-period prices / constant-dollar GDP	Output × base year prices

What is the GDP deflator?

$\text{GDP Deflator}=\frac{\text{Nominal GDP}}{\text{Real GDP}}\times 100=\frac{\text{GDP at Current Prices}}{\text{GDP at Base-Period Prices}}\times 100$

The GDP deflator is the most comprehensive price index because it includes ALL goods and services produced by the entire economy.

What’s the difference between the GDP deflator and CPI?

Measure	What It Covers	Basket	Strength	Weakness
CPI	Consumer goods only	Fixed basket	Easy to compare across time — same basket	Gets outdated; substitution bias
GDP Deflator	ALL domestically produced goods	Current year’s production	Always reflects what’s actually happening	Harder to isolate pure price change

What is substitution bias?

CPI assumes people don't change behavior when prices change But they do — they substitute cheaper goods

CPI uses a fixed basket (e.g., “2 kg beef, 1 kg chicken”). When beef prices double:

• People actually buy LESS beef, MORE chicken
• CPI still weights beef at 2 kg
• CPI overstates the inflation impact on real households

GDP Deflator avoids this by using current production as the basket — it updates automatically each year.

Which measure should you use?

Question	Better Method
”How much more expensive is the SAME lifestyle?”	CPI — holds basket constant
”How much more expensive is what we’re ACTUALLY doing?”	GDP Deflator — updates basket

Policy implications:

If wages are indexed to CPI → workers compensated for maintaining a fixed lifestyle If wages were indexed to GDP deflator → compensation shifts with actual economic behavior

Same workers, same economy — different methodology, different paychecks.

There is no neutral measurement

Every method answers a different question, embeds different assumptions, and distributes consequences differently.

See Methodology as Power for deeper exploration of how measurement choices distribute consequences.

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Discuss the many important omissions from official measures of GDP

GDP measures MARKET production, not all economic activity

Only production that flows through a market transaction gets counted

What is the scope of GDP?

Aspect	What GDP Does
Scope (what’s included)	Only production with an associated market transaction
Counting method (how it’s tallied)	Value added, to avoid double-counting

“Production not transactions” tells us HOW to count (value added). “Market transaction required” tells us WHAT gets counted at all.

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What does GDP omit?

Illegal Activities

GDP excludes illegal business activities — drug trade, illegal gambling, unregulated prostitution — even though these:

• Produce goods and services
• Use factors of production
• Generate income

In 2018, Canada legalized marijuana. Transactions once invisible to GDP suddenly became measured. Measured GDP rose — but not all of this reflected NEW economic activity. Some was activity that was ALWAYS happening, now visible.

Why exclude? Not a principled economic reason — it’s a practical measurement limitation. The activity is real; we just can’t observe it.

Underground Economy

Category	Example	Legal Status
Illegal activity	Drug trade	Activity itself is illegal
Underground economy	Carpenter paid cash, doesn’t report	Activity is legal, reporting is illegal

The underground economy involves legitimate work that goes unreported to avoid taxation.

Estimated size: 2-15% of GDP in Canada. Higher in other countries.

Underground economy creates a cost transfer

• Who benefits: The person avoiding taxes
• Who pays: Other taxpayers (higher rates to compensate) + society (underfunded services)

This is the Simplicity Moves Cost, It Doesn’t Reduce It principle: the tax burden doesn’t disappear — it shifts to others.

Home Production, Volunteering, and Leisure

Activity	Production?	Market Transaction?	In GDP?
Hire a cleaner	✓	✓	✓
Clean your own home	✓	✗	✗
Hire a landscaper	✓	✓	✓
Do your own landscaping	✓	✗	✗
Coach local hockey team (volunteer)	✓	✗	✗

The same cleaning has the same value whether you pay for it or not GDP only "sees" it when money changes hands

The paradox: If you incorporated “Kai’s Cleaning Services” and invoiced yourself $50/week:

• GDP goes UP
• Actual economic activity is unchanged
• The ONLY variable is whether a market transaction was recorded

This reveals that GDP measures market transactions, not underlying value creation.

Leisure: When a lawyer reduces work from 2400 to 2200 hours:

• GDP falls (fewer billable hours)
• Lawyer’s wellbeing rises (more leisure, presumably valued more than the lost wages)
• The “loss” to GDP is actually a GAIN to the person

Free Digital Products

Facebook, Google, Wikipedia — used by billions, no purchase transaction.

Method	What Economists Do	Problem
Survey users	”What would you need to be paid to give up Facebook?”	Stated preference ≠ revealed preference
Estimate value	Median US user: ~$576/year	Surveys are unreliable (people lie, misunderstand, perform social desirability)

Better methods exist but aren't used

Revealed preference data (time spent, switching behavior, demographic-adjusted opportunity cost) would be more accurate than surveys — but requires investment in infrastructure

Measuring digital “bads” (addiction, lost productivity):

If social media causes addiction and lost productivity, we could measure this:

Data Point	What It Tells You
Demographics of users	Income levels → opportunity cost of time
Time spent on platform	Hours “lost” to potential work or home production
Hours × wage rate by demographic	Rough economic cost

This is revealed preference at work — watch what people DO, not what they SAY.

Complication: Not all time on social media is “lost.” Some is genuine leisure, connection, utility. The question is: addiction vs. chosen enjoyment. Hard to disentangle — but not impossible with the right data.

This is the pattern: “It’s hard to measure” often means “we haven’t invested in measuring it.”

See We Created Real GDP Without Abolishing Nominal for why better measurement is possible but resisted.

Economic “Bads”

When a power plant creates pollution:

• Electricity value: INCLUDED in GDP
• Environmental damage: NOT SUBTRACTED

Activity	GDP Impact	Net Effect on Wellbeing
Produce electricity that causes pollution	+	Mixed (electricity good, pollution bad)
Clean up oil spill	+	Zero (just restoring prior state)
Treat pollution-caused illness	+	Negative (wouldn’t need treatment without pollution)

GDP counts the "goods" but ignores the "bads"

This systematically overstates improvement in living standards

Why not subtract bads?

The textbook says: “It would fundamentally change the nature of the measurement.”

Translation: It would be harder. The current method is “good enough.”

But for whom? The people who bear the cost of unmeasured pollution are not the same people who chose the methodology.

See Methodology as Power and The People Around You Bear the Cost of Your Shortcuts.

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Why don’t we just add better measures?

We added Real GDP without abolishing Nominal GDP. Same logic could apply:

Problem	Solution	Did We Replace the Original?
Nominal distorted by inflation	Created Real GDP	No — we use both
GDP ignores externalities	Could create Green/Clean GDP	Not done

These measures already exist:

Measure	What It Does	Status
Genuine Progress Indicator (GPI)	GDP − bads + non-market goods	Used by some jurisdictions
Green GDP	GDP − environmental damage	China attempted 2004, abandoned 2007
Human Development Index (HDI)	Income + education + health	UN publishes, widely cited

The China Green GDP case:

Year	What Happened
2004	China launches Green GDP
2006	First report: some provinces show near-zero or negative Green GDP
2007	Program abandoned due to political pressure

The measure worked. It showed reality. That was the problem.

"Everyone is happy with the simple measure" means everyone WITH POWER is happy

The people harmed by simple measurement are invisible precisely BECAUSE of the simple measurement

See You Have to Survive Long Enough to Matter and Naive Change Is Impossible, Strategic Change Is Possible.

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Do different countries measure GDP the same way?

Yes — international standards (UN System of National Accounts) create consistency.

Benefit	Cost
Cross-country comparison possible	Hard to improve methodology unilaterally
Historical comparability maintained	Path dependence locks in limitations
Coordination reduces confusion	”Everyone else does it this way” becomes excuse

This is why China’s Green GDP attempt was vulnerable — deviating from international norms made their numbers “not comparable.”

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Do the omissions matter?

The textbook’s defense:

Reason	Translation
”Correcting omissions would be difficult”	It’s hard
”Changes in GDP still track changes in activity”	Good enough
”Policymakers need market output measures”	We’ve built systems around this

The pattern: Difficulty is a function of infrastructure. “It’s too hard” often means “we haven’t invested.”

See The Cost Transfer Principle for the full exploration of how this connects to ethics, power, and what change is actually possible.

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Understand why real per capita GDP is a good measure of average material living standards but an incomplete measure of overall well-being

What does “living standards” mean?

Two definitions:

Definition	What It Measures	Best Metric
Narrow: Material living standards	Purchasing power, real income	Real GDP per capita
Broad: Overall well-being	Health, freedom, environment, equality, leisure	Composite indices (HDI, GPI)

Real per capita GDP is good for the narrow definition, incomplete for the broad one.

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Real GDP per Capita as Material Living Standard

$\text{Real GDP per Capita}=\frac{\text{Real GDP}}{\text{Population}}$

What It Captures	What It Misses
Average output per person	Distribution (inequality)
Changes in productivity	Non-market production
Purchasing power trends	Leisure, health, freedom

Real GDP per capita measures average material living standards

If it rises, the average person CAN consume more. Whether they DO, and whether that makes them better off, are separate questions.

When does GDP per capita rise?

Scenario	Real GDP	Population	GDP per Capita	Material Living Standards
Productivity growth	↑	—	↑	↑ Better off
Population growth, same output per worker	↑	↑	—	No change
Recession	↓	—	↓	↓ Worse off

Productivity growth is the key to rising material living standards

More people working doesn’t help if output per person stays flat.

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Why GDP per Capita Is Incomplete

Important Thing	Is It in GDP?
Income	✓
Health / life expectancy	✗
Education	✗
Political freedom	✗
Environmental quality	✗
Leisure time	✗
Income distribution / equality	✗ (GDP is an average)
Community, relationships, meaning	✗

GDP measures what we PRODUCE, not what we VALUE

A country could have high GDP per capita but poor health, no freedom, environmental destruction, and extreme inequality.

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Alternative Measures of Well-Being

Human Development Index (HDI)

The UN’s composite measure:

Dimension	Indicator
Health	Life expectancy at birth
Education	Mean years of schooling + expected years of schooling
Material standard	GNI per capita (PPP adjusted)

Countries ranked by weighted combination of all three.

Norway often ranks #1 on HDI despite not having the highest GDP per capita — because it scores high on health and education too.

What HDI adds: A country can’t game the ranking by maximizing GDP alone. Health and education matter.

What HDI still misses: Environmental sustainability, inequality (though adjusted versions exist), political freedom, leisure.

Other Alternatives

Measure	What It Adds
Genuine Progress Indicator (GPI)	Subtracts bads, adds non-market goods
OECD Better Life Index	11 dimensions including work-life balance, civic engagement
Gross National Happiness (Bhutan)	Psychological wellbeing, cultural resilience, ecology

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The Methodological Tension

All composite indices face a problem:

Challenge	Why It’s Hard
What to include?	Disagreement on what matters
How to weight dimensions?	Is health more important than education? By how much?
How to measure intangibles?	Freedom, happiness, community — hard to quantify
Comparability	Different cultures value different things

Any composite index embeds normative judgments The weights ARE the values. Choosing weights = choosing what matters.

This is Methodology as Power again — whoever designs the index decides what counts.

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The Bottom Line

Measure	Good For	Bad For
Real GDP per capita	Tracking average material living standards over time	Capturing full picture of well-being
HDI	Broader view including health + education	Still incomplete; weights are arbitrary
Specialized indices	Specific dimensions (environment, happiness)	Cross-country comparison; consensus

There is no perfect measure of well-being GDP per capita is useful but limited. Broader measures help but embed value judgments. Use multiple measures, understand their limitations.

See We Created Real GDP Without Abolishing Nominal — we don’t need to pick ONE measure. Multiple measures serving different purposes can coexist.

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Key Concepts

• Intermediate and final goods
• Value added
• GDP as the sum of all values added
• GDP from the expenditure side
• GDP from the income side
• Nominal and real GDP
• GDP deflator
• Omissions from GDP
• Per capita GDP and productivity
• Living standards and GDP
• GDP vs. GNP (geography vs. ownership)

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Graduate note candidates from this chapter

Created during this study session:

1. Methodology as Power — measurement choices distribute consequences
2. Economic Data Tells You Where You Were, Not Where You Are — lagging indicators, irreducible uncertainty
3. Every Comparison Has a Hidden Baseline — broken window fallacy, baseline matters
4. Simplicity Moves Cost, It Doesn’t Reduce It — cost transfer across time and people
5. Why We Default to Simple — Kahneman biases, cognitive machinery
6. The People Around You Bear the Cost of Your Shortcuts — ethical heart of cost transfer
7. We Created Real GDP Without Abolishing Nominal — precedent for Green GDP, China case
8. You Have to Survive Long Enough to Matter — long game, strategic patience
9. Naive Change Is Impossible, Strategic Change Is Possible
10. When Does Incorporating Become Worthwhile — tangent on personal finance
11. The Cost Transfer Principle — traces the full journey from GDP study to unified philosophy

Still candidates:

• GDP Is a Gauge Not a Goal — could be atomic note, currently integrated in chapter notes
• Optimal vs Maximum GDP — leisure has value, Y* isn’t maximum — could be atomic note