Economics • Market Failure

Externalities & Interventions Simulator

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Shift the marginal social cost or benefit curve to model a negative or positive externality, then apply a tax or subsidy and see how the deadweight welfare loss changes — for Cambridge International AS/A Level Economics.

Market Equilibrium & Welfare

Externalities & Government Intervention Model
0 20 40 60 80 100 0 20 40 60 80 100 Quantity Price Pm Qm MPB (D) MPC (S1)
CS: Consumer Surplus
PS: Producer Surplus
Gov: Tax / Subsidy Impact
DWL: Welfare Loss

Economic Indicators

Metric Type Value
Market Price (Pc) Consumer $0
Producer Price (Pp) Producer $0
Market Quantity (Qm) Market Output 0 units
Consumer Surplus (CS) Welfare $0
Producer Surplus (PS) Welfare $0
Welfare Loss (DWL) Efficiency $0

Externalities & Interventions Simulator — Multilingual Glossary

Key concepts and translations across English, Te Reo Māori, Simplified Chinese (中文), and Korean (한국어).

English Term Te Reo Māori Chinese (中文) Korean (한국어) Definition & Context