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Carbon tax estimates the cost of greenhouse gas emissions under a price-per-ton-CO₂ policy. It values environmental externalities.
公式
Carbon tax = emissions (tonnes CO₂e) × tax rate ($/tonne)
ステップバイステップガイド
- 1Carbon tax = emissions (tonnes CO₂e) × tax rate ($/tonne)
- 2Rates vary: $0-200/tonne CO₂e globally, ~$10-60 typical
- 3Encourages emission reduction and clean technology adoption
解いた例
入力
Annual emissions 5 tonnes CO₂e, carbon tax $50/tonne
結果
Annual tax $250 (incentivizes reduction)
Makes clean energy attractive
避けるべきよくある間違い
- ✕Assuming carbon tax alone solves climate change (needs multiple policies)
- ✕Neglecting regressive impact on low-income households
よくある質問
How do carbon taxes compare to cap-and-trade?
Tax: fixed cost, uncertain reduction; cap-and-trade: fixed emissions, uncertain cost. Each has merits.
Does carbon tax hurt economy?
If revenue recycled (dividend to citizens or clean energy investment), often economic neutral or positive.
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