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M09.L05 — Australian Policy Applications: Carbon Price, Fuel Excise, Rent Assistance

Module: Module 09 — Price Regulation, Taxes, and Subsidies Lesson: L05 of 05 Duration: ~30 minutes Level: Introductory Provenance: MIT OCW 14.01 Principles of Microeconomics | Principles of Microeconomics (Curtis and Irvine)

Learning Objective

Compare the effectiveness of different policy instruments in addressing market failures.

Carbon Pricing in Australia

Australia’s carbon tax (2012-2014) and current Safeguard Mechanism aim to reduce emissions by internalizing the social cost of carbon. The tax faced political opposition but was economically efficient. Fuel excise (~49c/L, indexed to CPI) similarly corrects for road-use externalities. Rent Assistance (a direct payment) avoids the pitfalls of rent control by subsidizing tenants without distorting the housing market.

Worked Example

Carbon Tax vs. Cap-and-Trade

  1. Carbon tax: Sets a fixed price per ton of emissions, creating price certainty but uncertain quantity reductions.
  2. Cap-and-trade: Sets a fixed emissions cap, creating quantity certainty but volatile prices.
  3. Australian experience: The carbon tax reduced emissions but was repealed due to political opposition.

Common Misconception

"All price regulations are equally effective."

Policies vary in efficiency: taxes/subsidies can be precise but unpopular, while direct payments (e.g., Rent Assistance) avoid market distortions.

Key Takeaways

  • Carbon pricing internalizes environmental costs but faces political challenges.
  • Fuel excise corrects for road-use externalities.
  • Rent Assistance avoids the inefficiencies of rent control.
  • Policy design balances efficiency and equity.

Practice

  1. Why was Australia’s carbon tax repealed despite its economic efficiency?
  2. How does Rent Assistance differ from rent control?
  3. What are the trade-offs between carbon taxes and cap-and-trade?

Further Resources

Provenance: MIT OCW 14.01 Principles of Microeconomics | Principles of Microeconomics (Curtis and Irvine)