Consumer Economics: Key Concepts, Credit, Mortgages & Insurance

Posted on Mar 2, 2026 in Economy

Core Concepts in Consumer Economics

• Consumer: Uses goods and services.
• Consumption: Satisfies needs and wants.
• Production: Creates goods and services.
• Households: Basic units of consumption.
• Expenditure: Spending now; Savings: Resources set aside for future use.
• GDP (U.S.):

  Where:

  • C = Consumption
  • G = Government Spending
  • I = Investment
  • X = Exports
  • M = Imports
• Disposable Income: Income after taxes; Per Capita DI = average disposable income per person.

2. Market Structures

• Pure Competition: Many sellers, identical products (e.g., agriculture).
• Monopolistic Competition: Many sellers, differentiated products (e.g., fast food).
• Oligopoly: Few sellers dominate (e.g., telecom: AT&T, Verizon).
• Monopoly: One seller dominates (e.g., utilities).

3. Consumer Rights & Responsibilities

• Consumer Rights:
  • Safety, information, choice, and the right to be heard.
• Consumer Responsibilities:
  • Obtain promises in writing.
  • Conduct research before purchasing.
  • Protect personal information.
  • Be cautious to avoid pressure and assumptions.

4. Demand & Supply Fundamentals

• Law of Demand: Price decrease → quantity demanded increases.

  Demand curve slopes downward.

• Price Elasticity of Demand: Measures sensitivity of quantity demanded to price changes.
  • Elastic demand: Sensitive to price (luxuries, e.g., pizza).
  • Inelastic demand: Not sensitive (necessities, e.g., medicine, gasoline).
• Determinants of Elasticity:
  • Availability of substitutes.
  • Necessity versus luxury.
  • Percentage of income spent.
  • Time period considered.
  • Addictiveness.
• Law of Supply: Price increase → quantity supplied increases.

5. Fraud & Consumer Protection

• Fraud: Intentional deception for profit.
• Deception: Distorts the truth but is not always intentional.
• Rip-off: Not illegal but against consumer interests.
• Common fraud tactics: Bait and switch, low-balling, packing, fake cures, pyramid schemes, phishing.
• Legal protections – Major Antitrust Laws:
  • Sherman Act (1890): Outlaws monopolies and trade restraints.
  • Clayton Act (1914): Prevents anti-competitive mergers and price discrimination.
  • FTC Act (1914): Creates the FTC; bans unfair competition and false advertising.
• Consumer protection tips: Use reputable companies, be skeptical of offers that seem too good to be true, maintain defenses, and report fraud promptly.

6. Consumer Credit & Debt Management

• Credit: Borrowing money or purchasing power with an agreement to pay later, usually with interest.
• The 5 Cs of Credit:
  • Character: Willingness to repay, reflected in payment history and job stability.
  • Capacity: Ability to repay (ideally debt < 36% of gross income).
  • Capital: Savings, investments, and assets.
  • Collateral: Assets pledged to secure credit.
  • Conditions: Economic environment (inflation, unemployment).
• Credit Score Factors (FICO):

  Factor	Weight (%)
  Payment History	35%
  Amounts Owed (Utilization)	30%
  Length of Credit History	15%
  New Credit Applications	10%
  Credit Mix	10%

• Credit Usage Rules:
  • 20/10 Rule: Borrow ≤ 20% of annual net income; monthly payments ≤ 10% of take-home pay.
  • Keep credit balances below 30% of available credit to maintain a good score.
• Truth in Lending Act (1968): Requires disclosure of APR and total financing charges.
• Protecting Credit: Monitor credit reports regularly, safeguard personal information, and report identity theft swiftly.

7. Home Ownership & Mortgage Essentials

• The 28/36 Rule for Affordability:
  • Housing costs ≤ 28% of gross monthly income.
  • Total debt payments (housing + other debts) ≤ 36% of gross monthly income.
• Mortgage Types:
  • Conventional: Bank or credit union backed.
  • FHA: Government-insured (often for first-time buyers).
  • VA: For veterans.
  • Jumbo: Loans exceeding conforming limits.
• Mortgage Payment Components: Principal, interest, property taxes, insurance, maintenance.
• Fixed-rate Mortgage: Interest rate stays constant.
• Adjustable-rate Mortgage (ARM): Interest rate varies over time.
• Points: Prepaid fees to reduce the interest rate (1 point = 1% of the loan amount).

Sample Mortgage Calculation

Example: $120,000 loan at 10% interest for 30 years results in monthly payment ≈ $1,053 and total interest ≈ $259,111.

8. Saving and Investing Basics

• Reasons to Save: Emergency fund, financial goals, retirement, and wealth building.
• Saving vs Investing:
  • Saving: Low risk, liquid (e.g., savings accounts, CDs).
  • Investing: Potential for income or capital gain (stocks, bonds, real estate, mutual funds).
• Investment Risks & Returns:
  • Higher risk usually means higher potential return.
  • Diversification reduces risk.
  • Liquidity measures how easily assets convert to cash.
  • Speculation involves high risk for rapid gains.
• Impact of Inflation: Investment returns must exceed the inflation rate to preserve purchasing power.

Time Value of Money Key Formulas

9. Insurance Essentials

• Purpose: Protect financial well-being against losses.
• Key Elements: Insurer, insured, beneficiary, premium, policy.
• Principles of Sound Insurance: Probability, indemnity, determinable and uncertain event, no moral hazard.
• Types of Insurance:
  • Homeowner’s: Protects property and liability.
  • Automobile: Covers liability, collision, and comprehensive losses.
  • Health: Hospital, major medical, disability, dental, surgical.
  • Life: Provides benefits to dependents at death.
• Social Security: Retirement, disability, and survivors benefits funded by payroll taxes.

10. Consumer Decision Making Process

1. Identify the problem or need.
2. Determine available resources and budget.
3. Analyze alternatives: costs, benefits, attributes.
4. Visualize outcomes of each choice.
5. Make a decision and execute the purchase.
6. Review and evaluate satisfaction post-purchase.

Demand & Price Change Effects